NFPA 1802 Two-Way Portable RF Voice Communications Devices for Use by Emergency Services Personnel in the Hazard Zone

Bluetooth.

A wireless technology that allows data communications between devices over short ranges.

Certification Organization. An independent third-party organization that determines product compliance with the requirements of this standard using product testing and evalua­tion and that administers a labeling, listing, and follow-up program.

Certification/Certified. A system whereby a certification organization determines that a manufacturer has demonstrated the ability to produce a product that complies with the require­ments of this standard, authorizes the manufacturer to use a label on listed products that comply with the requirements of this standard, and establishes a follow-up program conducted by the certification organization as a check on the methods the manufacturer uses to determine continued compliance of labeled and listed products with the requirements of this stand­ard.

Channel. An assigned operation range of frequencies; or a user-selectable frequency pair used for radio communica­tions.

Compatible Device. Any electronic device that connects to the RF device or RSM and that participates in the exchange of a signal.

Compliance/Compliant. Meeting or exceeding all applicable requirements of this standard.

Compliant Product. Equipment that is certified to the applicable NFPA standard.

Any material, part, or subassembly used in the construction of the compliant product.

To run or fall in drops or blobs.

Emergency Alert Button (EAB). Electronic device button to assist in alerting of an emergency.

Emergency ED. Unit identification of a radio in an emergency state.

Emergency State/Mode. State of an RF device after a user has declared an emergency condition, usually character­ized by a particular set of behaviors, displays, or audible alerts.

Failure Mode and Effects Analysis (FMEA). A risk assessment technique for systematically identifying potential failures in a system or a process.

Follow-Up Inspection Program. The sampling, inspec­tions, tests, or other measures conducted by the certification organization on a periodic basis to determine the continued compliance of labeled and listed products that are being produced by the manufacturer to the requirements of this standard.

Hazard Zone.

The area where members might be exposed to a hazard or hazardous atmosphere; or a particular substance, device, event, circumstance, or condition that presents a danger to members of the fire department.

Hazard Zone Mode.

A mode of operation of the device when in the hazard zone.

Hazardous (Classified) Location (HazLoc). A location where fire or explosion hazards might exist due to flammable gases, flammable liquid-produced vapors, combustible liquid- produced vapors, combustible dusts, or ignitible fibers/flyings.

Head and Torso Simulator (HATS). A mannequin with built-in ear and mouth simulators that provides a realistic reproduction of the acoustic properties of an average adult human head and torso.

A symbol that represents an option, program, or system status.

Interoperability.

The capability of components to exchange data or information, or mechanically interface, with other components.

3.3.29* Intrinsic Safety (IS). Type of protection where any spark or thermal effect is incapable of causing ignition of a mixture of flammable or combustible material in air under prescribed test conditions.

Intrinsically Safe Circuit. A circuit in which any spark or thermal effect is incapable of causing ignition of a mixture of flammable or combustible material in air under prescribed test conditions.

Intrinsically Safe System. An assembly of interconnec­ted intrinsically safe apparatus, associated apparatus, and inter­connecting cables, in that those parts of the system that are used in hazardous (i.e., classified) locations are intrinsically safe circuits.

Logical ID. A unique sequence of numeric characters identifying an RF device.

The entity that directs and controls any of the following: compliant product design, compliant product manufacturing, or compliant product quality assurance; or the entity that assumes liability for the compliant product or provides the warranty for the compliant product.

A response to heat by a material resulting in evidence of flowing or dripping.

3.3.36* Mode. A means of categorizing a collection of features used in a specific operational situation.

3.3.37 Model. The collective term used to identify a group of individual elements or items of the same basic design and components from a single manufacturer produced by the same manufacturing and quality assurance procedures that are covered by the same certification.

Nonhazard Zone Mode.

A mode of operation of the device, as defined by the AHJ, which has different operational features than the hazard zone mode of operation.

3.3.39 Nonincendive Equipment. Equipment having electri­cal/electronic circuitry that is incapable, under normal operat­ing conditions, of causing ignition of a specified flammable gas- air, vapor-air, or dust-air mixture due to arcing or thermal means.

3.3.40* Out-of-Range. A condition when the communication between a system and an RF device is lost.

Perceptual Objective Listening Quality Assessment (POLQA). An objective test process for speech quality on tele­communications equipment that can be automated.

Pink Noise. Noise that contains constant energy per octave band.

Portable Radio. A two-way, portable voice communica­tions device using radio frequencies that is either carried by an individual or worn on the body (see 3.3.50, RF Device).

Compliant Product.

3.3.46* Product Label. A marking provided by the manufac­turer for each compliant product containing compliance state­ments, certification statements, manufacturer and model information, or similar data.

• Programmable Features. A feature or function that can be enabled or disabled by configuring the RF device or RSM prior to operation.
• Radio Licensing Authority. The government authority in a country that issues licenses for use of radio frequencies by authorized agencies and individuals.
• Remote Speaker Device/Microphone (RSD/RSM). A device that places the RF device microphone and speaker remotely from the RF device and near the face of the user.

RF Device.

A radio system capable of both transmit­ting and receiving a modulated radio-frequency (RF) signal that is then converted to an audio or data signal, or both; used to transmit and receive signals.

• RSD/RSM. See 3.3.49.
• Safety Alert. The procedure by which a manufacturer notifies users, the marketplace, and distributors of potential safety concerns regarding a product.
• The ensemble, element, component, or composite that is conditioned for testing; or ensembles, elements, items, or components that are randomly selected from the manufacturer’s production line, from the manufac­turer’s inventory, or from the open market.
• The degree of response of a receiver or instrument to an incoming signal or to a change in the incom­ing signal.
• Service Life. The period for which a compliant prod­uct might be useful before retirement.
• Sound Pressure Level (SPL). The local pressure devia­tion from the ambient (i.e., average or equilibrium) atmos­pheric pressure caused by a sound wave.
• Taken from samples, the conditioned ensemble, element, item, or component that is tested.
• See 3.3.56.
• Talk Path. The specific channel, consisting of transmit­ting and receiving radio frequencies, chosen for field users to communicate on.

Talkgroup.

A communications channel in a trunked system or a P25, Standard of Requirements (P25 SoR), conven­tional system.

Telecommunications Industry Association (TLA).

The leading trade association representing the global information and communications technology industry through standards development, policy initiatives, business opportunities, market intelligence, and networking events.

3.3.63* Trunking Signaling Block (TSBK). A form of signaling that uses P25 digital protocol for ID, emergency, and similar messages.

3.3.65 User ID. A unique sequence of numeric characters (i.e., a logical ID) or alphanumeric characters assigned to the RF device as determined by the AHJ.

3.3.66* Voltage Standing Wave Ratio (VSWR). A measure of how efficiently radio-frequency power is transmitted from a power source.

3.3.68* Zone. A geographically defined area where communi­cations are transmitted and received; or a collection of chan­nels, talkgroups, or talk paths.

Certification

• For the process of certification of RF devices and RSMs as being compliant with this standard, all RF devices and RSMs shall meet the requirements of Sections 4.1 through 4.8.
• Certification and Accreditation.
• All certification shall be performed by a certification organization that meets the requirements specified in Section 4.2 and that is accredited in accordance with ISO/IEC 17065, Conformity assessment — Requirements for bodies certifying products, processes and services.
• The accreditation shall be issued by an accreditation body operating in accordance with ISO/IEC 17011, Conformity assessment — General requirements for accreditation bodies accrediting conformity assessment bodies.
• Manufacturers shall not claim compliance with portions or segments of the requirements of this standard and shall not use the NFPA name or the name or identification of this stand­ard in any statements about their respective product(s) unless the product(s) is certified as compliant with all applicable requirements of this standard.
• Where RF devices or RSMs are compliant, the product shall be labeled and listed.
• Where RF devices or RSMs are compliant, the product shall also have a product label that meets the requirements specified in Section 5.1.
• The certification organization’s label, symbol, or identi­fying mark shall be one of the following:
  • Attached to the product label
  • Part of the product label
  • Immediately adjacent to the product label
• Certification Program.
• The certification organization shall not be owned or controlled by the manufacturers or vendors of the product being certified.
• The certification organization shall be primarily engaged in certification work and shall not have a monetary interest in the product’s ultimate profitability.

4.2.3.1 The certification organization shall be accredited in accordance with ISO/IEC 17065, Conformity assessment — Requiremen ts for bodies certifying products, processes and services.

4.2.3.2 The accreditation shall be issued by an accreditation body operating in accordance with ISO/IEC 17011, Conformity assessment — General requiremen ts for accreditation bodies accrediting conformity assessment bodies.

• The certification organization shall refuse to certify products to this standard that do not comply with all applicable requirements of this standard.
• The contractual provisions between the certification organization and the manufacturer shall specify that certifica­tion is contingent on compliance with all applicable require­ments of this standard.
• The certification organization shall not offer or confer any conditional, temporary, or partial certifications.
• Manufacturers shall not be authorized to use any label or reference to the certification organization on products that are not compliant with all applicable requirements of this standard.
• The certification organization shall have laboratory facilities and equipment available for conducting required tests to determine product compliance.
• The certification organization laboratory facilities shall have a program in place and functioning for calibration of all instruments, and procedures shall be in use to ensure accurate control of all testing.
• The certification organization laboratory facilities shall follow best practices regarding the use of laboratory manuals, form data sheets, documented calibration and calibration routines, performance verification, proficiency testing, and staff qualification and training programs.
• The certification organization shall require the manufac­turer to establish and maintain a quality assurance program that meets the requirements of Section 4.5.
• The certification organization shall require the manu­facturer to have a product recall system as specified in Section 4.8 as part of the manufacturers’ quality assurance program.
• The certification organization shall audit the manufac­turer’s quality assurance program to ensure that the quality assurance program provides continued product compliance with this standard.
• The certification organization and the manufacturer shall evaluate any changes affecting the form, fit, or function of the compliant product to determine its continued certification to this standard.
• The certification organization shall have a follow-up inspection program of the manufacturer’s facilities of the compliant product with at least two random and unannounced visits per 12-month period to verify the product’s continued compliance.
• As part of the follow-up inspection program, the certif­ication organization shall select samples of the compliant prod­uct at random from the manufacturer’s production line, from the manufacturer’s in-house stock, or from the open market.
• Samples shall be evaluated by the certification organi­zation to verify the product’s continued compliance to ensure that the materials, components, and manufacturing quality assurance systems are consistent with the materials, compo­nents, and manufacturing quality assurance that were inspec­ted and tested by the certification organization during initial certification and recertification.
• The certification organization shall be permitted to conduct specific testing to verify the product’s continued compliance.
• For products, components, and materials where prior testing, judgment, and experience of the certification organiza­tion have shown results to be in jeopardy of not complying with this standard, the certification organization shall conduct more frequent testing of sample product, components, and materials acquired in accordance with 4.2.9.1 against the applicable requirements of this standard.
• The certification organization shall have in place a series of procedures, as specified in Section 4.6, that address reports of situations in which a compliant product is subse­quently found to be hazardous.
• The certification organization’s operating procedures shall provide a mechanism for the manufacturer to appeal deci­sions.
• The procedures shall include the presentation of information from both sides of a controversy to a designated appeals panel.
• Name and Label Protection.
• The certification organization shall be in a position to use legal means to protect the integrity of its name and label.
• The name and label shall be registered and legally defended.

General requirements for the competence of testing and calibration labo­ratories.

• The certification organization’s testing laboratory’s scope of accreditation to ISO/IEC 17025, General requirements for the competence of testing and calibration laboratories, shall encom­pass testing of RF devices.
• The accreditation of a certification organization’s test­ing laboratory shall be issued by an accreditation body operat­ing in accordance with ISO/IEC 17011, Confonnity assessment — General requirements for accreditation bodies accrediting conformity assessment bodies.
• A certification organization shall be permitted to utilize conditioning and testing results conducted by a product or component manufacturer for certification or recertification, provided the manufacturer’s testing laboratory meets the requirements specified in 4.3.3.1 through 4.3.3.5.
• The manufacturer’s testing laboratory shall be accredi­ted in accordance with the requirements of ISO/IEC 17025,

General requirements for the competence of testing and calibration labo­ratories.

• The manufacturer’s testing laboratory’s scope of accreditation to ISO/IEC 17025, General requirements for the competence of testing and calibration laboratories, shall encompass testing of RF devices.
• The accreditation of a manufacturer’s testing labora­tory shall be issued by an accreditation body operating in accordance with ISO/IEC 17011, Confonnity assessment — General requirements for accreditation bodies accrediting confonnity assessment bodies.
• The certification organization shall approve the manu­facturer’s testing laboratory.
• The certification organization shall determine the level of supervision and witnessing of the conditioning and test­ing for certification or recertification conducted at the manu­facturer’s testing laboratory.
• Sampling levels for testing and inspection shall be estab­lished by the certification organization and the manufacturer to ensure that products certified to this standard are compliant, unless such sampling levels are specified herein.
• Inspection and evaluation by the certification organiza­tion shall include a review of all product labels to ensure that all required label attachments, compliance statements, certifi­cation statements, and other product information are at least as specified for RF devices in Section 5.1.
• Inspection and evaluation by the certification organiza­tion shall include an evaluation of any symbols and pictorial graphic representations used on product labels or in user infor­mation, as permitted in 5.1.5, to ensure that the symbols are explained in the product’s user information package.
• Inspection and evaluation by the certification organiza­tion shall include a review of the user information required by Section 5.2 to ensure that the information has been developed and is available.
• Inspection and evaluation by the certification organiza­tion for determining compliance with the design requirements specified in Chapter 6 shall be performed on whole or complete products.
• Testing to determine compliance of the RF device with the performance requirements specified in Chapter 7 shall be conducted by the certification organization in accordance with the specified testing requirements of Chapter 8 and in the order as specified in Table 4.3.9.
• Testing to determine compliance of RSMs with the performance requirements specified in Chapter 7 that can be connected to the RF device shall be conducted by the certifica­tion organization in accordance with the specified testing requirements of Chapter 8 and in the order as specified in Table 4.3.9.1.
• Testing shall be performed on new RF devices or RSMs.
• Testing shall be performed on specimens representa­tive of materials and components used in the actual construc­tion of the compliant product.
• The certification organization shall require the manufac­turer of the compliant product or the manufacturer of the compliant product component, if applicable, to assist the certif­ication organization in the investigation and to conduct its own investigation as specified in Section 4.8.
• Where the facts indicating a need for corrective action are conclusive and the certification organization’s appeal procedures referenced in 4.2.11 have been followed, the certifi­cation organization shall initiate corrective action immediately, provided there is a manufacturer to be held responsible for such action.
• Where the facts are conclusive and corrective action is indicated, but there is no manufacturer to be held responsible, such as when the manufacturer is out of business or the manu­facturer is bankrupt, the certification organization shall imme­diately notify relevant governmental and regulatory agencies and issue a notice to the user community about the hazard.
• Where the facts are conclusive and corrective action is indicated, the certification organization shall take one or more of the following corrective actions:
  • Parties authorized and responsible for issuing a safety alert shall be notified when, in the opinion of the certifi­cation organization, such a safety alert is necessary to inform the users.
  • Parties authorized and responsible for issuing a product recall shall be notified when, in the opinion of the certifi­cation organization, such a recall is necessary to protect the users.
  • The mark of certification shall be removed from the product.
  • Where a hazardous condition exists and it is not practical to implement the corrective actions in 4.7.11(1), 7.11(2), or 4.7.11(3) or where the responsible parties refuse to take corrective action, the certification organiza­tion shall notify relevant governmental and regulatory agencies and issue a notice to the user community about the hazard.
• The certification organization shall provide a report to the organization or individual identifying the reported hazard­ous condition and notify that organization or individual of the corrective action indicated or that no corrective action is indi­cated.

4.8 Manufacturers’ Investigation of Complaints and Returns.

• Manufacturers shall provide corrective action in accord­ance with ISO 9001, Quality management systems — Requirements, for investigating written complaints and returned products.
• Manufacturers’ records of returns and complaints rela­ted to safety issues shall be retained for at least 5 years.
• Where the manufacturer discovers, during the review of specific returns or complaints, that a compliant product or compliant product component can constitute a potential safety risk to end users and is possibly subject to a safety alert or prod­uct recall, the manufacturer shall immediately contact the certification organization and provide all information about its review to assist the certification organization with the investiga­tion.

4.9 Manufacturers’ Safety Alert and Product Recall Systems.

• Manufacturers shall establish a written safety alert system and a written product recall system that describes the proce­dures to be used in the event that they decide or are directed by the certification organization to either issue a safety alert or conduct a product recall.
• The manufacturers’ safety alert and product recall systems shall provide the following:
  • The establishment of a coordinator and responsibilities by the manufacturer for the handling of safety alerts and product recalls
  • A method of notifying all dealers, distributors, purchas­ers, users, and the NFPA about the safety alert or product recall that can be initiated within 1 week following the manufacturer’s decision to issue a safety alert or to conduct a product recall or after the manufacturer has been directed by the certification organization to issue a safety alert or conduct a product recall
  • Techniques for communicating the nature of the safety alert or product recall and, in particular, the specific hazard or safety issue found to exist
  • Procedures for removing product that is recalled and for documenting the effectiveness of the product recall
  • A plan for repairing or replacing product or for compen­sating purchasers for returned product

Product Labeling and Information

Every compliant RF device and RSM shall have a product label permanently attached to the complete assembled prod­uct.

Multiple label pieces shall be permitted to carry all state­ments and information required to be on the product label; however, all label pieces that the product label comprises shall be located adjacent to each other.

Labels and Lettering.

The certification organization’s label, symbol, or iden­tifying mark shall be attached to the product label or be part of the product label.

The label, symbol, or identifying mark shall be at least 6 mm (‘4) in height.

All letters shall be at least 1.5 mm (‘/₃₂) in height.

Arial font in capital letters shall be used for all label lettering.

All worded portions of the required product label shall be at least in English.

Symbols and other pictorial graphic representations shall be permitted to be used to supplement worded statements on the product label (s).

The compliance image as shown in Figure 5.1.6 shall be printed on all RF device labels, all certified accessory labels, and all RSM labels.

Each RF device, rechargeable power source, certified accessory, and RSM shall be marked directly with the serial number and the year and month of manufacture.

The RF device, or an RSM containing a loudspeaker, shall he capable of producing a sound pressure level of 110 less than 88 dBA with the volume control set to its maximum posi­tion when measured by the method specified in TIA-603-E, Land Mobile FM or PM — Communications Equipment — Measure­ment and Performance Standards, Section 2.1.20.

When the RF device is powered off in the hazard mode, it shall have the following voice annunciation at the volume specified in 6.12.5.1: “powering off.”

Selector Knob.

The RF device shall include a primary display of at least eight characters visible without scrolling, with at least six addi­tional characters visible with continuous scrolling.

Backlight Illumination.

The primary display shall be capable of being illumina­ted by means of backlighting when any RF device control is manipulated.

The backlight illumination time shall be programma­ble.

The display shall be backlit 011 the RF device that initi­ated the emergency mode, and be backlit 011 all RF devices that are receiving the emergency message, until reset in accordance with 6.8.9.

Display backlights required by this standard shall meet the design requirements of 6.15.1.1.

The backlight illumination time for an RF device receiving an emergency activation shall be programmable.

All displays shall be readable from a distance of 609.6 mm (2 ft) in all modes when backlit and in a completely dark room.

All displays shall be readable from a distance of 609.6 mm (2 ft) in all modes when backlit and in daylight.

Visual Indicators. The RF device shall have visual indica­tors to inform the user of event conditions as specified in Section 6.15.

Emergency Alert Button (EAB).

• The EAB shall be located adjacent to the base of the external antenna, if so equipped, or, if not so equipped, adja­cent to a guiding feature on the top of the RF device.
• The EAB shall be international orange in color.
• The EAB shall comprise a minimum of 113 mm² (0.175 in.²) of projected surface area.
• The EAB shall be designed to minimize accidental acti­vation.

Activation/Deactivation.

• The EAB shall be activated after a continuous press of no less than 1 second and no more than 3 seconds, as deter­mined by the AHJ.
• After EAB activation, the EAB shall be capable of being programmed to be deactivated after a subsequent contin­uous press of at least 2 seconds.
• The activation of the alert button shall cause the RF device to transmit an emergency alert in accordance with TIA-102.AABD, Project 25 TrunkingProcedures.
• The RF device shall transmit the user ID at the highest RF power the RF device is capable of transmitting and in compliance with the licensing authority.
• Subsequent emergency transmissions shall be at the highest RF power the RF device is capable of transmitting and in compliance with the radio licensing authority until emer­gency activation is cleared.
• The emergency signal shall use the trunking signaling block (TSBK) protocol when operating in analog conventional mode as specified in TIA-5045, Numeric Identifier for Conventional Analog Operation.

 The AHJ shall be permitted to select optional protocols in addition to the TSBK protocol, based 011 opera­tional need.

• The RF device shall have one of the following capabili­ties for voice transmission upon activation of the emergency button:
  • * Remain on selected channels, talkgroups, or talk paths
  • * Revert to preprogrammed transmission channels, talk- groups, or talk paths
• Voice transmission, as specified in 6.8.7.1, shall be at the highest RF power the RF device is capable of transmitting and in compliance with the radio licensing authority.
• Subsequent voice transmissions from the RF device that initiated the emergency signal shall be at the highest RF power the RF device is capable of transmitting until emer­gency activation is cleared.
• The displayed emergency indication shall remain activa­ted until reset by the initiating user as determined by the AHJ.

The receiving RF device shall be capable of allowing the AHJ to do the following:

(1) Configure it to emit a distinct audible tone for 3 sec ± 500 ms at maximum volume upon receipt of an emer­gency activation from another RF device

• A visual alert message, “FAIL ACC” shall appear on the RF device display.
• A change to the backlight as specified in 6.15.1 shall occur.

6.11.3 Audible and visual alert messages specified in 6.11.2 shall be canceled when the user completes any one of the following actions:

• Reinitiating a pairing with or reconnecting to a wireless accessory
• Power cycling the RF device
• Connecting a new or repaired wired accessory

Voice Announcement.

• The RF device shall be equipped with a voice announcement in English.
• Voice announcements in additional languages shall be permitted.
• The voice announcement shall be active by default.
• Voice announcement shall commence within 500 ms of powering on or switching channels, talkgroups, or talk paths, unless superseded by higher priority voice announcements.
• Receive Audio.
• Receive audio shall have priority over any voice announcements.
• Receive audio shall override such announcements if they both occur simultaneously.
• Any overridden voice annunciation shall follow within 5 seconds of detecting the last PTT or received audio.
• Order of Announcement.
• In the event of simultaneous events, announcements shall be made according to the following list of precedence:
  • Zone
  • Channels, talkgroups, or talk paths
  • Emergency, as specified in Section 6.8
  • Failure of an RSM as specified in Section 6.11
  • Out of range, if applicable in accordance with Section 6.13
  • Self-diagnostic failure as described in Section 6.17
  • Power off
• Prerecorded voice files, user-created or voice synthe­sis files, or any combination thereof, shall be permitted to be used for any voice announcement, as determined by the AHJ.
• Channel, talkgroup, or talk path name announcements shall be required.
• Voice Announcement Sound Levels.

6.12.5.1 Channel, talkgroup, talk path voice announcements, and other preprogrammed voice announcements in the hazard zone mode and when transitioning from the hazard zone mode to the nonhazard zone mode shall be at a minimum of 82 dBA measured at 1 m, + 0.1/-0 m, perpendicularly to the RF device speaker output with the sound level meter set to A-weighting with a fast response time (I.AF).

6.12.5.1.1 The max-hold function (if available) shall be permitted to be used to hold the maximum value observed by the meter for the specified period of time.

6.13* Out-of-Range Detection. Where the RF device operates on a system that has an out-of-range capability, the RF device shall detect if it is out-of-range within 1.0 minute.

6.14* Audible and Visible Event Indications.

Out-of-Range Indication.

The RF device shall detect if it is in-range and connected to a system, or out-of-range and loss of connection to a system; where applicable to the system type.

The RF device shall, within one (1) minute of detect­ing out-of-range and loss of connection to a system, display the following indications:

All displays shall be backlit-flashing red when the RF device is out of range.

The RF device shall emit an audible tone every 15 seconds ± 1 second, and the tone shall last 1 second, +0.5/-0 second, at 70 percent of factory set max volume level.

The AHJ shall have the ability to program the out of range volume level to no less than 50 percent of factory set max volume.

The AHJ shall have the ability to program a hold off time of 0 to 120 seconds to eliminate nuisance warnings.

The RF device shall return to normal display, and the sound shall cease when it detects it is no longer out of range and has reestablished connection to the system.

Visible Event Indications. 

• All LEDs and display backlights on the RF device and RSM shall illuminate as indicated during the following event conditions:
  • Emergency: indicated by flashing orange when an emer­gency alarm signal is initiated; indicated by flashing red when an emergency alarm signal is received
  • Connected RSM failure: indicated by solid orange within 500 ms of detecting a failure as specified in 6.11.1
  • Over-temperature: indicated by solid orange immediately upon detecting an internal over-temperature event as specified in Section 6.16
  • Out-of-range: indicated by flashing yellow within one (1) minute of detecting out-of-range as specified in Section 6.14
  • Transmit and receive LED: receive, indicated by solid green; transmit, indicated by solid red
• LEDs shall have the following operational states:
  • ON: LED is continuously illuminated
  • OFF: LED is not illuminated
  • FLASHING: LED provides a continuous sequence of On/Off illumination states at a 1 Hz frequency and 50 percent duty cycle.

6.15.1.3.1 Continuous blue shall indicate the Bluetooth link is paired and active.

6.15.2 When simultaneous events occur the indications prior­ity shall be in order as listed in 6.15.1.

• Internal Over-Temperature Event Indications.

6.16.1* The RF device shall detect an internal over- temperature event.

• An RSM or compatible device shall be permitted to detect an internal over-temperature event.
• The over-temperature limit shall be designated by the RF device or compatible device manufacturer.
• An over-temperature event shall occur any time inter­nal temperature exceeds the manufacturer’s designated temperature for 30 seconds ± 5 seconds.
• Detection and Reporting.
• The RF device shall detect an over-temperature event in both the RF device itself and any RSM that is so equipped to detect an internal over-temperature event.
• An RSM shall be permitted to report an internal over- temperature event with the internal temperature data command as specified in Table 6.21.1 (a) and Table 6.21.1 (b).
• The over-temperature event shall be displayed as “OVER TMP” on the RF device’s primary display as specified in 6.1.
• The over-temperature event shall be audibly announced “Over Temp” at maximum volume.

6.16.5.1 The over-temperature announcement shall be repea­ted every 5 minutes ±15 seconds, regardless of the number of recorded over-temperature events, until reset by the AHJ serv­ice shop.

• The over-temperature condition shall be recorded in the RF device’s memory.
• The start time of the over-temperature event shall be recorded when the event starts.
• The end time and maximum temperature of the over- temperature event shall be recorded when the event ends.

6.16.6.3* Each over-temperature record shall indicate if it occurred in the RF device or a connected capable RSM.

• If the RF device has been exposed to more than 10 minutes ± 30 seconds of cumulative over-temperature condi­tions, an audible announcement shall be made that states, “RF DEVICE HAS HAD LONO EXPOSURE TO EXTREME TEMPERATURES.”
• If the capable RSM has been exposed to more than 10 minutes ± 30 seconds of cumulative over-temperature condi­tions, an audible announcement shall be made that states, “THE OPTIONAL COMPONENT HAS HAI) LONO EXPO­SURE TO EXTREME TEMPERATURES.”
• Device Self-Checks.

6.17.1 The RF device shall perform mandatory self-checks to verify operation when the unit is initially powered up, periodic self-checks while it remains powered up, and periodic self- diagnostics every 5 minutes, at a minimum.

• The RF device shall display a visual indication when it has failed the self-check.
• The display shall be backlit red when the RF device does not pass the self<heck.
• The RF device shall have a voice annunciation of radio failure if the self-diagnostic tests fail.
• The following functions shall be tested in self-check:
  • * RSM connectivity to the RF device
  • Loss of antenna connection to the RF device
  • Temperature exposure over manufacturer recommended overheat temperature
  • Battery with at least 50 percent of the total capacity availa­ble (power-up only)
• Upon connecting an RSM to an RF device that is turned on, the RSM check shall take place automatically and thereafter on the periodic self-checks.
• Database Requirements.
• The RF device shall contain a database to store infor­mation related to operations.
• The database shall reside in nonvolatile, nonremovable memory.
• ID Storage.
• The database shall be capable of storing user ID information.
• The database shall be capable of storing a minimum of 3000 user ID entries.
• The user ID entry shall include the signaling-specific logical ID as well as an alias, if available, of at least 14 alphanu­meric characters.
• The RF device shall be capable of storing a list of user ID entries containing a minimum of the last 20 emergency acti­vations, as specified in 6.8.9.3.
• The RF device shall be capable of storing data logs as specified in Section 6.19.
• Data Logging. 6.19.1 Memory.
• RF devices shall incorporate data logging in nonvola­tile memory.
• At a minimum, each of the following events shall be identified, recorded, and date and time stamped in coordina­ted universal time in the data log:
  • RF device is turned on.
  • Emergency button is activated.
  • User input, button press, or switch is activated.
  • Power source levels are at initial power on and then at 75 percent, 50 percent, 25 percent, 10 percent, and 5 percent capacity.
  • RF device is turned off.
  • Channel, talkgroup, talk path, zone, mode, deck, bank, or mission plan is selected.
  • Internal electronics temperature exceeded the limit specified by the manufacturer.
• The data logging information shall be downloadable by the emergency services organization.
• The data logging shall have a minimum capacity of logging the 2000 most recent events.

RF Wireless Interface (RFWI).

The RF device shall be capable of operating with a wire­less RSM using classic Bluetooth audio.

The RF device shall support the Bluetooth headset profile (HSP) and the hands-free profile (HFP).

The RF device shall exchange speaker and micro­phone audio with a wireless RSM via HSP or HFP.

The RF device shall be capable of supporting the Bluetooth serial port profile (SPP).

The RF device shall exchange the data command and data response sets specified in Table 6.21.1(a) and Table 6.21.1(b) and Table 6.21.2(a) and Table 6.21.2(b) with a wire­less RSM via SPP.

The RF device shall be capable of Bluetooth secure simple pairing using “Just Works” mode.

The RF device shall be Bluetooth certified.

The RF device shall meet the connectivity requirements specified in 6.20.2.1 through 6.20.2.5.

The RF device shall remain paired to the last RSM or compatible device.

Upon power up, the RF device shall attempt to recon­nect to the last paired RSM or compatible device.

The RF device shall have a minimum effective range of 1 m (3.3 ft).

The RF device shall operate in the presence of six Bluetooth audio devices within a 5 m (16.4 ft) spherical radius.

The RF device shall attempt to restore a lost Blue­tooth connection.

A wireless RSM or compatible device shall be capable of the requirements specified in 6.20.3.1 through 6.20.3.8.

A wireless RSM or compatible device shall be Blue­tooth certified.

A wireless RSM or compatible device shall support the HSP or the HFP.

A wireless RSM or compatible device shall support the SPP.

A wireless RSM or compatible device shall be permit­ted to support the functionality specified in Section 6.10.

Button, LED, and control functionality specified in Section 6.9 shall be supported with the data commands and responses specified in Table 6.21.1(a) and Table 6.21.1(b) and Table 6.21.2(a) and Table 6.21.2(b) over SPP.

Failure Detection.

6.20.3.6.1 If capable, upon detecting failure of any minimum operational requirements outlined in Section 6.9, a wireless compatible device shall intentionally end the wireless link to an RF device without notice.

6.20.3.6.2 Such action shall generate the RF device failure response of Section 6.11.

• A wireless RSM or compatible device shall be permit­ted to report an internal over-temperature event with the data command specified in Table 6.21.1(a) and Table 6.21.1(b) over SPP.
• A wireless RSM or compatible device shall be permit­ted to indicate to the RF device an intentional power-off proce­dure has been activated with the closing connection data command specified in Table 6.21.1(a) and Table 6.21.1(b) over SPP.
• An RF device shall be permitted to connect with more than one Bluetooth RSM or compatible device at a time.
• A wireless RSM or compatible device shall be permitted to stand alone or be integrated into other equipment.

6.21 Data Commands.

• The RF device shall support the data command set specified in Table 6.21.1 (a) and Table 6.21.1(b).
• A wired or wireless RSM shall be permitted to support the data command set specified in Table 6.21.2(a) and Table 6.21.2(b).

6.22* Hazardous Location Requirements.

• The RF device and RSMs shall meet the requirements of this standard either for nonincendive equip­ment or for intrinsically safe systems.
• Nonincendive Equipment. The RF device and RSM shall at a minimum be suitable for use in Class I, Division 2, Groups A, B, C, and D; Class II, Division 2, Groups F and G; and Class III, Divisions 1 and 2 hazardous (classified) locations, and with a temperature class of T3 through T6 inclusive, as demonstrated by being certified as nonincendive equipment in accordance with UL 121201, Non-Incendive Electric Equipment for Use in Class I and II, Division 2 and Class III, Divisions 1 and 2 Hazardous (Classified) Locations.

6.22.2.1 Interconnection.

• Interconnection of this nonincendive equipment (i.e., RF devices and RSMs) shall be by means of a plug and jack that complies with the requirements as specified in Section 6.10.
• The electrical parameters for this interconnection shall be in accordance with Table 6.22.2.1.2.
• Intrinsically Safe Systems.

6.22.3.1 The RF devices and RSMs shall be permitted to be certified for use in Class I, Division 1, Groups C and D; Class II, Division 1, Groups E, F, and G; and Class III, Divisions 1 and 2 hazardous (classified) locations, and with a temperature class of T3 through T6 inclusive, as demonstrated by being certified as an intrinsically safe system in accordance with ANSI/ TIA-4950-A, Requirements for Battery-Powered, Portable Land Mobile Radio Applications in Class I, II, and III, Division 1, Hazardous (Classified) Locations, or UL 913, Intrinsically Safe Apparatus and Associated Apparatus for Use in Class I, II, III, Division 1, Hazardous (Classified) Locations.

or PM — Communications Equipment — Measurement and Perform­ance Standards, and RF power output 3.2.1 (digital) as specified in TIA-102.CAAB-E, Land Mobile Radio Transceiver Performance Recommendations, Digital Radio Technology, C4FM/CQPSK Modula­tion.

7.2.1.2.2 Transmit power shall not decrease by more than 1 dB for the first 8 hours.

• The RF device shall be tested according to Section 8.16 and meet the requirements for carrier frequency stability 2.2.2 (analog) as specified in TIA-603-E, Land Mobile FM or PM — Communications Equipment — Measurement and Performance Stand­ards, and operating frequency accuracy 3.2.2 (digital) as speci­fied in TIA-102.CAAB-E, Land Mobile Radio Transceiver Performance Recommendations, Digital Radio Technology, C4FM/ CQPSK Modulation.
• The RF device shall be tested according to Section 8.17 and meet the Class A requirements for reference sensitivity 2.1.4 (analog) as specified in TIA-603-E, Land Mobile FM or PM — Communications Equipment — Measurement and Performance Standards, and reference sensitivity 3.1.4 (digital) as specified in TIA-102.CAAB-E, Land Mobile Radio Transceiver Performance Recommendations, Digital Radio Technology, C4FM/CQPSK Modula­tion.

7.3 RF Antenna Requirements.

• The RF antenna shall be tested in accordance with Section 8.20.
• The RF antenna shall exhibit a voltage standing wave ratio (VSYVR) increase of no more than 41 percent across the bandwidth.
• The sample preparation procedures contained in 8.1.2 through 8.1.4 shall apply to each test method in this chapter, as specifically referenced in each test method.
• Only the specific sample preparation procedure (s) referenced in each test method shall be applied to that test method.
• Samples shall be complete devices.
• Specimens for testing shall be complete devices.
• A minimum of three specimens shall be tested.
• Specimens shall be set as follows:
  • Volume shall be set to maximum or as specified by the manufacturer.
  • * FM modulation shall be set to analog.
  • Channel bandwidth shall be set as follows:
    • VHF/UHF/700 — narrowband (12.5 kHz)
    • 800 band non-NPSPAC channels — 25 kHz
    • 800 band NPSPAC channels — 20 kHz
  • Transmit power shall be set to maximum or as specified by the manufacturer.
  • Hazard zone mode shall be enabled.
• Room Temperature Conditioning Procedure.
• Specimens shall be conditioned at a temperature of 22°C ±3°C (72°F ± 5°F) and relative humidity (RH) of 50 percent ±25 percent for at least 4 hours.
• Testing shall begin within 5 minutes of the specimens being removed from the conditioning.
• Cold Temperature Conditioning Procedure.
• Specimens shall be exposed to a temperature of-20°C, +0/-3°C (-4°F, +0/-5°F) for at least 4 hours.
• Testing shall begin within 30 seconds of the specimens being removed from the conditioning.
• Elevated Temperature Conditioning Procedure.
• Specimens shall be exposed to a temperature of 71°C, +1/-0°C (160°F, +2/-0T) for at least 4 hours.
• Testing shall begin within 30 seconds of the specimens being removed from the conditioning.

Speech Quality Test.

Testing Chamber. Testing shall be conducted in a chamber having the following characteristics, at a minimum:

Construction shall be hemi-anechoic.

Ambient noise level inside the chamber shall be at least NC-25.

Walls and ceiling shall be >90 percent absorptive for equal to or less than 200 Hz.

Clearance from test specimens shall be >1 m (>3.3 ft).

Acoustic Treatment. All room surfaces above the floor shall be acoustically treated for internal acoustic absorption as well as for external noise mitigation.

A G.R.A.S. KEMAR head and torso simula­tor (HATS), type 45BM or equivalent, shall be used for testing.

The mouth simulator shall be capable of produc­ing 1 kHz sine tone at a sound pressure level of 112 dBA as measured at 25 mm (1 in.) with the mouth reference point un- equalized.

The total harmonic distortion (THD) shall be <3 percent.

The mouth simulator frequency response shall be able to be equalized flat ±1 dB between 100 Hz and 10

The response shall be -15 dB or less at 100 Hz and -20 dB or less at 15 kHz.

Sound Pressure Level (SPL) Meter. The SPL meter having the following characteristics shall be used:

The SPL meter shall be capable of measuring an equiva­lent continuous sound pressure level (L_eq) using an A-weighted filter.

The SPL meter shall have a dynamic range from 30 dBA (or less) to 130 dBA (or greater).

The SPL meter shall display the measurement to at least 0.1 dBA.

Pink Noise Generator. A pink noise analog audio signal generator shall be used.

The pink noise analog audio signal generator shall be capable of generating pink noise and sine waves from -80 dBu to -2 dBu in one-dBu steps, with a THD+N of-90 dB (0.0032 percent) at 8 dBu noise floor type 25 pv.

The pink noise analog audio signal generator shall have the following characteristics:

A frequency range of 10 Hz to 20 kHz adjustable in one- digit steps resolution ±0.01 percent

An amplitude accuracy of ±0.5 dB or less

Digital Equalizer.

A digital equalizer shall be used.

The digital equalizer shall be capable of equalizing the frequency response of the HATS mannequin within ±1 dB flat between 100 Hz and 10 kHz.

A microphone having the following characteristics shall be used:

The microphone shall be a condenser type.

The microphone polar pattern shall be omnidirectional.

The frequency response shall be flat ±0.5 dB from 100 Hz to 15 kHz.

The residual noise shall be <-30 dB.

The microphone shall accept signals of at least 130 dBA.

Speech Quality Analyzer.

The speech quality analyzer shall have the following characteristics:

• Measures perceptual objective listening quality according to ITU-T P.863, Perceptual Objective Listening Quality Assess- ment, in narrowband operation
• Samples 16-bit linear audio input signal at 8 kHz or 16 kHz
• Handles voice files from 6 to 20 seconds in length
• Represents measurement result as the POLQA MOS value

• Radio Test Set/Service Monitor. An Aeroflex 3920 or equivalent radio test set/service monitor having the following characteristics shall be used:
  • The radio test set/service monitor shall be capable of receiving and transmitting analog FM and P25 signals.
  • The radio test set/service monitor shall operate over the frequency range of devices under test.
  • The radio test set/service monitor shall be P25 phase 1 and phase 2 compatible.
• Artificial Mouth. The artificial mouth shall be cali­brated as follows (see Figure 8.2.1.10):
  • The pink noise test signal from the HATS shall be equal­ized flat with pink noise from 100 Hz to 10 kHz to ±ldB on a ‘/f octave scale and adjusted to achieve an A-weighted sound level of 97 dBA ±0.5 dB at the mouth reference point (MRP), 50 mm ±3 mm (2 in. ±V_S) from the HATS’ mouth.
  • The levels for the 125 Hz octave band (the 100 Hz, 125 Hz, 160 Hz V₃ octave bands) shall be reduced by 10 dB.
  • The levels for the 250 Hz octave band (the 200 Hz, 250 Hz, 315 Hz ‘/, octave bands) shall be reduced by 2 dB.

(4) The speech quality test signal “Malel_lst_Set_8k.wav” shall be applied and the SPL adjusted until an average (SPL) (Leq) of 95 dBA ±0.5 dBA is achieved, over a period of time of 45 seconds ±15 seconds.

• Artificial Ear. The artificial ear shall be calibrated as follows (see Figure 8.2.1.11):
  • The microphone calibrator shall be applied to the artifi­cial ear and set to the level specified by the manufacturer.
  • The audio analyzer shall be calibrated according to the calibration procedure specified by the audio analyzer manufacturer.
• Speech Quality Measurement Setup.
• The speech quality measurement shall be activated in the audio analyzer.
• Each speech quality measurement shall be recorded for each test signal as follows:
  • Four excitation speech signals, two male and two female, shall be selected by the audio analyzer as follows:
    • Male 1_ lst_Set_8k.wav
    • Male 2_ 1 st_Set_8k.wav
    • wav
    • Female 2_ 1 st_Se t_8k.wav
  • The mode shall be narrowband.
  • Automatic gain control shall be disabled.
  • The four speech quality readings shall be calculated and reported.
• RF Device RFDC Transmit Audio Speech Quality Test.

The RF device RFDC transmit audio speech quality test shall be conducted in accordance with the following procedure (see Figure 8.2.1.13):

• The radio test set/service monitor shall have de-emphasis enabled, IF bandwidth of 12.5 kHz, and audio band pass filter of 300 Hz to 3.0 kHz.
• For wired connection, the audio signal from the speech quality test set shall be fed to the transmitting specimen via the RFDC at nominal level of -38 dBV.
• The audio signal from the radio test set/service monitor to the speech quality test shall be adjusted to achieve a 0.0 dBu nominal level.
• The measurement shall be started and the speech quality reading measured and reported.

• RF Device Bluetooth Transmit Audio Speech Quality Test. The RF device Bluetooth transmit audio speech quality test shall be conducted in accordance with the following proce­dure (see Figure 8.2.1.14):
  • The radio test set/service monitor shall have de-emphasis enabled, IF bandwidth of 12.5 kHz, and audio band pass filter of 300 Hz to 3.0 kHz.

Audio analyzer

Artificial ear

Calibration of the Artificial Ear.

• The audio signal from the speech quality test set shall be fed to the transmitting specimen via Bluetooth at a nomi­nal 80 percent modulation.

Sound calibrator 8.4.4.2.3 There shall be no burrs, sharp edges, surface discon­tinuities, or fasteners on the internal surfaces of the holding- boxes.

• The large compartments shall encase the complete devices that are larger than 5161 mm² (8 in.²).
• The small compartments shall encase the complete devices that are smaller than 5161 mm² (8 in.²).
• Test specimens shall be placed unrestrained in the compartments specified in 8.4.4.2.
• Test specimens shall not be tied down.
• The basic movement of the bed of the test table shall be a 25 mm orbital path such as can be obtained on a standard package tester operating in synchronous mode at 250 rpm ±5 rpm.
• The test duration shall be 3 hours.
• The speech quality measurement shall be conducted as specified in Section 8.2 to determine pass or fail perform­ance.
• Following the speech quality measurement, the speci­men shall be operated to the manufacturer’s instructions as specified in Sections 6.2 through 6.7 to determine functionality and pass or fail performance.
• Specimens shall be operated according to the manu­facturer’s instructions to determine functionality for data logging as specified in Section 6.16 to determine pass or fail performance.
• After determining functionality, the specimen shall be tested and meet the requirements in Section 7.2.
•  
• The speech quality result measured after the vibration resistance test shall be recorded and reported.
• The functionality of the specimens shall be recorded and reported.
• The requirements in Section 7.2 shall be tested, recor­ded, and reported.
•  
• Pass or fail performance shall be determined for each specimen.
• Failure of one or more specimens shall constitute fail­ing performance for this test.

 Impact Acceleration Resistance Test.

• This test method shall apply to all devices.
• Samples shall be complete devices.
• Samples shall be conditioned as specified in 8.1.2.
• Specimens for testing shall be complete devices.
• A minimum of three specimens shall be tested.

Specimens shall be set as specified in 8.1.1.6.

•  
• Three specimens of product shall be subjected to a series of impact acceleration tests.
• One test specimen for ambient temperature condi­tioning shall be exposed to a temperature of 22°C ±3°C (72°F ±5°F), for at least 4 hours.
• One test specimen for cold temperature condition­ing shall be exposed to a temperature of -20°C ±1°C (-4°F ±2°F), for at least 4 hours.
• One test specimen for elevated temperature condi­tioning shall be exposed to a temperature of 71°C ±1°C (160°F ±2°F) for at least 4 hours.
• Each product tested shall be complete with power source.
• After conditioning, product shall be turned to the “on” position.
• Testing shall begin within 30 seconds of removal from conditioning.
• Following each conditioning, the product shall be dropped a total of eight times from a distance of 3 m (9.8 ft) onto a concrete surface so that impact is on each face and on one corner and one edge of the product.
• The entire series of drops shall be completed within 10 minutes of removal from conditioning.
• Specimens shall be visually evaluated to determine that the device enclosure has not incurred damage that affects normal operation or enclosure integrity.
• The speech quality measurement shall be conducted as specified in Section 8.2 to determine pass or fail perform­ance.
• Following the speech quality measurement, the speci­men shall be operated to the manufacturer’s instructions as specified in Sections 6.2 through 6.7 to determine functionality and pass or fail performance.
• Specimens shall be operated according to the manu­facturer’s instructions to determine functionality for data logging as specified in Section 6.16 and pass or fail perform­ance.
• After determining functionality, the specimen shall be tested and meet the requirements in Section 7.2.
• The speech quality result measured after the acceler­ated impact resistance test shall be recorded and reported.
• The functionality of the specimens shall be recorded and reported.
• The requirements in Section 7.2 shall be tested, recor­ded, and reported.

8.5.6 Interpretation.

• Pass or fail performance shall he determined for each specimen.
• Failure of one or more specimens shall constitute fail­ing performance for this test.

8.6 Corrosion Test.

• This test method shall apply to all devices.
• Samples shall be complete devices.
• Specimens for testing shall be complete devices.
• A minimum of three specimens shall be tested.
• Specimens shall be set as specified in 8.1.1.6.
• Specimens shall be conditioned at a temperature of 22°C ±3°C (72°F ±5°F), and a relative humidity of 50 percent ±25 percent, for at least 4 hours.
• Specimens shall be tested within 5 minutes after removal from conditioning.
• Test Parameters.
• Specimens shall be tested in accordance with ASTM B117, Standard Practice for Operating Salt Spray (Fog) Apparatus.
• Salt spray shall be 5 percent saline solution.
• Test exposure shall be for 48 hours, +30/-0 minutes.
• The chamber shall be stabilized at a temperature of 35°C ±3°C (95°F ±5°F).
• Specimens shall be placed in the chamber in the typi­cal operating position as used by first responders, as specified by the manufacturer.
• At the conclusion of the salt spray period, specimens shall be stored in an environment of 22°C ±3°C (72°F ±5°F) at 50 percent ±5 percent relative humidity for a minimum of 48 hours.
• Following the conditioning period, specimens shall be tested within 60 seconds of removal from conditioning.
• The speech quality measurement shall be conducted as specified in Section 8.2 to determine pass or fail perform­ance.
• The specimen shall be operated to the manufacturer’s instructions as specified in Sections 6.2 through 6.7 to deter­mine functionality and pass or fail performance.
• After determining functionality, the specimen shall be tested and meet the requirements specified in Section 7.2.
• The speech quality result measured after the corrosion test shall be recorded and reported.
• The functionality of the specimens shall be recorded and reported.

8.6.5.3 The requirements in Section 7.2 shall be tested, recor­ded, and reported.

8.6.6 Interpretadon.

• Pass or fail performance shall be determined for each specimen.
• Failure of one or more specimens shall constitute fail­ing performance for this test.

8.7 Display Surface Abrasion Test.

• This test shall apply to all devices.
• Samples shall be complete display surfaces or representative plaques from devices.
• Specimens for testing shall be complete devices’ display surfaces or representative plaques.
• Four specimens shall be taken.
• One of the specimens shall be the setup specimen.
• The test specimen shall include all of the following criteria:
  • The specimen shall be a square measuring 50 mm x 50 mm (2 in. x 2 in.).
  • At least 38 mm (1 V₂) of the 50 mm x 50 mm (2 in. x 2 in.) square shall be taken from the display surface.
• Each of the specimens shall be cleaned in the follow­ing manner:
  • The specimen shall be rinsed with clean tap water.
  • The specimen shall be washed with a solution of nonionic/low-phosphate detergent and water using a clean, soft gauze pad.
  • The specimen shall be rinsed with deionized water.
  • The specimen shall be blown dry with clean compressed air or nitrogen.
• Samples shall be conditioned as specified in 8.1.2.
• Specimens shall be tested within 5 minutes after removal from conditioning.
• The test apparatus shall be constructed in accordance with Figure 8.7.4(a) and Figure 8.7.4(b).

8.7.5.1 The haze of the specimen shall be measured using a haze meter in accordance with ASTM D1003, Standard Test Method for Haze and Luminous Transmittance of Transparent Plas­tics, and recorded with the following additions:

• The haze shall be measured in the middle 2 mm² of the specimen.
• The specimen shall be repositioned to achieve the maxi­mum haze value within the area defined in 8.7.5.1 (1).
• The haze meter shall have a specified aperture of 22 mm.
• The haze meter shall have a visual display showing 0.1 percent resolution.
• The haze meter shall be calibrated before and after each clay’s use following procedures specified in ASTM D1003, Standard Test Method for Haze and Luminous Transmittance of Transparent Plastics.