Adverse Condition Test

7/27/2019 Adverse Condition Test

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Republic of the PhilippinesDepartment of Interior and Local Government

NATIONAL POLICE COMMISSION

NATIONAL HEADQUARTERS, PHILIPPINE NATIONAL POLICE

OFFICE OF THE CHIEF, PNPCamp Crame, Quezon City

MEMORANDUM CIRCULARNumber 2013-

SUBJECT: ADVERSE CONDITION TEST PROCEDURES and GUIDELINES forCONVENTIONAL, TRUNKED RADIO SYSTEM, FIXED and LANDMOBILE RADIO EQUIPMENT and OTHER SIMILAR EQUIPMENT

1. REFERENCES

a. 47 CFR Ch.1 Part 90 Private Land Mobile Radio Services dtd October 1,2010;

b. Memorandum Circular Number DRD-2004-01 Test and Evaluation (T & E)Procedures for PNP Multi-Trunked Radio System (MTRS) and other SimilarEquipment;

c. MIL-STD-810F Environmental Engineering Considerations and LaboratoryTests dtd January 1, 2000;

d. NIJ Standard-0201.01 Fixed and Base Station FM Transmitters dtdSeptember 1987;

e. NIJ Standard-0206.01 Fixed and Base Station FM Receivers dtd July 1988;and

f. Philippine and International Radio Laws and Regulations dtd 1990.

2. PURPOSE

a. To establish test and evaluation procedure for the conduct of adversecondition test during the inspection and post qualification of conventional,trunked radio system, fixed and land mobile radio equipment and other similar

equipment; andb. To ensure the durability of the conventional, trunked radio system, fixed andland mobile radio equipment and other similar equipment (including itsaccessories) subject for procurement, evaluation, and/or acceptance by thePhilippine National Police (PNP).

3. SCOPE

This document covers all land mobile radio equipment and other similarequipment to be procured or used by the Philippine National Police.

Adverse Condition Test Procedures and Guidelines for Conventional, Trunked Radio System, Fixed and Land Mobile Radio Equipment and Other Similar EquipmentPage1 of 17


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4. DEFINITIONS

a. Base station .A station at a specified site authorized to communicate withmobile stations.

b. Carrier frequency .The frequency of an unmodulated electromagnetic wave.

c. Conventional radio system .A method of operation in which one or more radiofrequency channels are assigned to mobile and base stations but are notemployed as a trunked group. Conventional radios operate on fixed channelsand each user group is permanently assigned a fixed frequency or a set offrequencies.

d. Frequency Deviation . In frequency modulation, the difference between theinstantaneous frequency of the modulated carrier and the unmodulated carrierfrequency.

e. High Frequency (HF) Band . Band of frequencies between 3 and 30 MHz. It isalso known as the decameter band or decameter wave as the wavelengthsrange from one to ten decameters (ten to one hundred meters).

f. Land mobile radio service . A mobile service between base stations and landmobile stations, or between land mobile stations.

g. Land mobile radio system . A regularly interacting group of base, mobile andassociated control and fixed relay stations intended to provide land mobileradio communications service over a single area of operation. It denotes awireless communications system intended for use by terrestrial users invehicles (mobiles) or on foot (portables).

h. Land station . A station in the mobile service not intended to be used while inmotion. [As used in this part, the term may be used to describe a base,control, fixed, operational fixed or fixed relay station, or any such stationauthorized to operate in the temporary mode.]

i. Mobile relay station .A base station in the mobile service authorized toretransmit automatically on a mobile service frequency communications which

originate on the transmitting frequency of the mobile station. It is used toextend the range of mobile units, and requires two frequencies for operation.

j. Mobile repeater station . A mobile station authorized to retransmitautomatically on a mobile service frequency, communications to or from hand-carried transmitters.

k. Mobile service .A service of radio communication between mobile and basestations, or between mobile stations.

l. Mobile station .A station in the mobile service intended to be used while in

motion or during halts at unspecified points. This includes hand carriedtransmitters.



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m. Modulation Types .

1) Amplitude Modulation (AM) . Modulation in which the amplitude of a waveis the characteristic subject of variation.

2) Continuous Wave (CW) . An electromagnetic wave that varies sinusoidallyin amplitude and remains constant in frequency.

3) Frequency Modulation (FM) . Modulation in which the instantaneousfrequency of a wave differs from its carrier frequency by an amountproportional to the instantaneous amplitude of the modulating signal.

4) Single Sideband (SSB) . Amplitude modulation with the carrier and onesideband suppressed.

n. Nominal Value . The numerical value of a device characteristic as specified bythe manufacturer.

o. Output power .The radio frequency output power of a transmitters final radiofrequency stage as measured at the output terminal while connected to a loadof the impedance recommended by the manufacturer.

p. Post-qualification . The stage where the bidder with the Lowest Calculated Bid,in the case of Goods and Infrastructure Projects, or the Highest Rated Bid, inthe case of Consulting Services, undergoes verification and validationwhether he has passed all the requirements and conditions as specified in theBidding Documents.

q. RF Power Output. The actual amount of power (in watts) of radio frequency(RF) energy that a transmitter produces at its output.

r. Receiver . Equipment specifically designed to respond respectively toelectromagnetic energy.

s. Sensitivity . The minimum input signal (Si) required to produce a specifiedsignal-to-noise S/N ratio at the output port of the receiver and is defined as

the mean noise power at the input port of the receiver times the minimumrequired signal-to-noise ratio at the output of the receiver.

t. SINAD Ratio . SINAD stands for Signal-to-noise and distortion ratio. The ratio,expressed in decibels, of (1) signal plus noise plus distortion to (2) noise plusdistortion produced at the output of a receiver; from Signal Noise AndDistortion Ratio. It is a measure of the quality of a signal from acommunications device. Unlike SNR, a SINAD reading can never be less than1.

u. SINAD Sensitivity . The minimum modulated RF signal input level required to

produce a specified SINAD ratio at a specified audio output power level.

http://en.wikipedia.org/wiki/Signal-to-noise_ratiohttp://en.wikipedia.org/wiki/Signal-to-noise_ratio


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v. Transceiver . An inherent combination of a radio transmitter and receiver.

w. Transmitter . A device capable of emitting radio frequency waves or energyintended for transmission of signals, messages or intelligence.

x. Technical Specifications . It refers to the physical description of the goods orservices, as well as the Procuring Entitys requirements in terms of thefunctional, performance, environmental interface and design standardrequirements to be met by the goods to be manufactured or supplied, or theservices to be rendered.

y. Very High Frequency (VHF) Band . Band of frequencies between 30 to 300MHz with wavelengths ranging from one (1) to ten (10) meters.

z. Ultra High Frequency . Band of frequencies between 300 MHz to 3000 MHz (3GHz) with wavelengths ranging from one hundred (100) millimeters to one (1)

meter.

5. ORGANIZATION

a. Post Qualification of Items

1) Head, TWG on Communication;2) DRD Representative;3) CES Representative;4) DL Representative;5) DC Management Representative;6) End-user Representative;7) NAPOLCOM Representative; and8) COA Representative.

b. Functional Test and Evaluation/Acceptance

1) DRD Technical Team;2) DL Representative;3) DC Management Representative;4) LSS Representative;

5) CES Representative;6) End-user Representative;7) NAPOLCOM Representative; and8) COA Representative.

6. TEST METHODS

a. Guidelines

1) Prior to the conduct of adverse condition test, perform an initial test on thedifferent functional parameters stated in the NAPOLCOM Approved

Standard Specifications applicable to the communications equipment to betested. The values obtained in the initial test should serve as the baseline.



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2) Use functional parameters and operational limits specified in theNAPOLCOM Approved Standard Specifications applicable to theequipment under test.

3) The standard values and operational limits used in the initial test must alsobe the basis in the conduct of the main test.

4) The baseline data that will be obtained during the initial test must bemonitored during each and after each test.

5) If a single item will be exposed to different adverse conditions to determineits cumulative effects, perform vibration test before all other environmentaltests.

6) Shock test shall be performed after the vibration test.

7) Perform humidity test before dust test and smoke test.

8) Initial test must be conducted a day before the conduct of the AdverseCondition Test.

b. Standard Test Conditions

Allow all equipment to warm up until the system has achieved sufficient stabilityto perform the measurement. Unless otherwise specified, perform all measurementsunder standard test conditions.

1) Power Source. Sufficient power shall be available to operate theequipment under test at its rated voltage, current, power and frequency.

2) Standard Temperature. Standard ambient temperature shall be between20 and 30 C (68 and 86 F).

3) Standard Relative Humidity. Standard ambient relative humidity shall bebetween 10 and 85 percent.

c. Test Equipment

1) Digital Communications Analyzer;2) RF Watt/Power meter with reflect signal reading covering HF to UHF

bands;3) Frequency Counter, HF to UHF Bands;4) Signal Generator, RF and AF signal capable of emitting 0.1 microvolt to

0.5 volt across all frequency range;5) Regulated Power Supply of the equipment under test; and6) Analog or Digital Multimeter.



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e. Initial Test.

1) Purpose . This test is used to ensure that the test item is operating properlyand to obtain baseline performance data.

2) Related Procedures .

a) PNP Memo Circular No. 2013-___ Test and Evaluation (T&E)Procedures and Guidelines for Conventional Fixed and Land MobileRadio Equipment; and

b) PNP Memo Circular No. 2013-___ Test and Evaluation (T&E)Procedures and Guidelines for Trunked Radio System.

3) Procedures .

a) Before the conduct of the initial test, document the following

information pertaining to the background data of each item:

1 Nomenclature;2 Model;3 Serial Number;4 Manufacturer;5 Brand;6 General appearance/condition;7 Specific physical anomalies/abnormalities; and8 Environmental test history.

b) Operate the test item under standard ambient conditions and obtainbaseline performance data.

f. Adverse Condition Test

Determine the reliability of the communication equipment when subjected todifferent adverse condition tests such as: Dust test, Vibration test, Immersion test,Wet/Rain test, Drop test, High Temperature test, antenna durability test, and PTTswitch durability test. Equipment will be inspected after each test for any physicaldamage followed by instrumentation or functional test.

1) Vibration Test

a) Purpose . This test is carried out in order to verify that the item willfunction in and withstand the vibration exposures of a life cycle.

b) Equipment and Materials Needed .

1 Digital Communications Analyzer.

c) Test Duration . One (1) hour minimum.



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d) Procedure .

1 With the power of the test item turned on, place the test item on thefloor at the rear of a moving vehicle from point of origin to

destination;2 Perform a thorough visual examination of the test item and

document any conditions resulting from vibration test;3 Perform operational check on the equipment and measure the RF

power output, receiver sensitivity and frequency error; and4 Document the results and compare with the results obtained during

the pretest.

e) Standard .

1 No fixed part of the equipment shall come loose, nor movable part

be shifted in position;2 After the test, the equipment must function properly based on the

NAPOLCOM Approved Standard Specifications.

2) Drop Test

a) Purpose . Provides confidence that the item can physically andfunctionally withstand the relatively infrequent non-repetitive shocksencountered during handling and transportation.

b) Scope . This test is applicable only to handheld two-way radios andtactical manpack radios.

c) Location .

1 For testing of equipment during handling - area with asphalt or softground; and

2 For testing of equipment during transportation - area with concreteor cemented ground.

d) Equipment and Materials Needed .

1 Digital Communications Analyzer;2 Motorcycle (100/110/125/200 cc); and3 Steel tape.

e) Procedures .

1 Drop Test During Handling While on Foot.

a Prior to the conduct of this test, perform visual and operationalcheck on the equipment. Document the results;

b While the personnel handling the equipment is mobile,, theequipment must be dropped from a height of 60 inches (5 ft.) to



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f Document the results and compare with the results obtainedduring the pretest.

f) Standard .

1 The equipment must be free from cracks;2 No fixed part of the equipment shall come loose, nor movable part

be shifted in position;3 After the test, the equipment must function properly based on the


3) Humidity Test

a) Purpose . Determines the resistance of the item to the effects of ahumid atmosphere.

b) Test Duration . One (1) hour minimum.

c) Location . Any area wherein the relative humidity ranges from 70 to95%.


1 Digital Communications Analyzer;2 Thermometer;3 Hygrometer; and4 Timer.

e) Procedures .

1 While the unit is OFF, expose it to an open humid area;2 Record the temperature, relative humidity and the time;3 Turn the equipment ON after forty-five (45) minutes of exposure;4 Fifteen (15) minutes after turn-on, perform a thorough visual

examination of the test item and document any conditions resultingfrom humidity exposure;

5 Measure the RF power output, receiver sensitivity and frequency

error of the transmitter and/or receiver to determine whether itmeets the requirements; and6 Document the results and compare with the results obtained during

the pretest. Record also the temperature, relative humidity and thetime the measurements are taken.

f) Standard . After the test, the equipment must function properly basedon the NAPOLCOM Approved Standard Specifications.

4) Dust Test

a) Purpose . This test helps to evaluate the ability of the item to resist theeffects of dust that may obstruct openings, penetrate into cracks,



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crevices, electrical components, wires, cables and PCB layout of theitem.

b) Scope . Dust test has to be performed only on items with the followingdegree of protection:

A. IEC 60529 Ingress Protection (IP) Standard

ProtectionObject size

protected againstEffective against

IP5_ Dust protected Ingress of dust is not entirely prevented, but it must notenter in sufficient quantity to interfere with thesatisfactory operation of the equipment; completeprotection against contact

IP6_ Dust tight No ingress of dust; complete protection against contact

c) Test Duration . One (1) hour minimum.


1 Digital Communications Analyzer;2 Timer; and3 Dust materials.

e) Procedures .

1 Place the equipment on the turntable located inside the testchamber containing dust materials such as talcum powder with a

concentration of 10 g/m3;2 Turn-on the fan so that the dust materials will circulate inside the

chamber;3 Orient the equipment such that the most vulnerable surface is

facing the blowing dust. Expose the surface to the blowing dust fora period of five (5) minutes;

4 During the entire test period, rotate the item to expose all surfacesto blowing dust at five (5) minute duration each;

5 After all the surfaces have been exposed to blowing dust, turn-offthe fan;

6 Allow the test item to return to standard ambient conditions, and the

dust to settle;7 Remove accumulated dust by brushing, wiping, or shaking,

avoiding the introduction of additional dust into the item. Do notremove dust by air blast or vacuum cleaning;

8 Inspect the equipment for dust penetration, giving special attentionto ventilation points and sensitive electronic components;

9 Perform operational check and measure the power output, receiversensitivity, and frequency error; and

10 Document the results.



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f) Standard .

1 The equipment must be protected from dust penetration dependingon its degree of protection;

2 After the test, the equipment must function properly based on the


5) Smoke Test

a) Purpose . Determines the ability of the item to resist the effects ofaccumulated car fumes on the electrical components,electrical/electronic contacts, wires and PCB layout of the item.

b) Test Duration . Thirty (30) minutes.

c) Equipment and Materials Needed .

1 Digital Communications Analyzer;2 Vehicle; and3 Timer.

d) Procedures .

1 Place the equipment three (3) to four (4) meters directly from themuffler;

2 Turn on the engine of the vehicle;3 Expose the equipment to car fumes for a period of thirty (30)

minutes;4 Perform operational check and measure the RF power output,

receiver sensitivity, and frequency error; and5 Document the results of visual inspection and operational test.

e) Standard . After the test, the equipment must function properly basedon the NAPOLCOM Approved Standard Specifications.

6) Wet Operation Test

a) Purpose . The purpose of this test is to help determine the followingwith respect to rain, water spray or dripping water:

a. the effectiveness of protective covers, cases, and seals inpreventing the penetration of water into the item; and

b. the capability of the item to satisfy its performance requirementsduring and after exposure to water.

b) Scope . Wet Operation Test has to be performed only on equipmentwith the following degree of protection:



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A. IEC 60529 Ingress Protection (IP) Standard

Protection Protected against Testing for Details

IP_3 Spraying water Water falling as a spray at anyangle up to 60 from the verticalshall have no harmful effect

Test duration: 5 minutesWater volume: 0.7 litres per

minute

Pressure: 80-100 kN/m2IP_4 Splashing water Water splashing against the

enclosure from any directionTest duration: 5 minutesWater volume: 10 litres per

minutePressure: 80-100 kN/m2

IP_5 Water jets Water projected by a nozzle(6.3 mm) against enclosurefrom any direction shall have noharmful effects

Test duration: at least 3minutes

Water volume: 12.5 litresper minute

Pressure: 30 kN/m2 atdistance of 3 m

IP_6 Powerful water jets Water projected in powerful jets(12.5 mm nozzle) against theenclosure from any directionshall have no harmful effects

Test duration: at least 3minutes

Water volume: 100 litres perminute

Pressure: 100 kN/m2 atdistance of 3 m

c) Test Duration . Ten (10) minutes. (Test duration will depend on theprotection level) protection level sets only the minimum required, thus, we canset our own based on the required


4 Digital Communications Analyzer;5 Water sprayer/hose/faucet;6 Water;7 Timer;8 Thermometer; and9 Dry cloth.

e) Procedures .

1 Wet the equipment with the use of a water sprayer located at adistance of one (1) foot for at least ten (10) minutes. Rotate theequipment to expose to water source all sides that could beexposed to blowing rain in its deployment cycle;


One (1) foot


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2 Conduct a visual inspection to determine if the equipment waspenetrated by water. If water has penetrated the equipment, do notproceed with the operational check, otherwise proceed to step 3;

3 Perform operational check and measure the RF power output,receiver sensitivity, and frequency error; and

4 Document the results of visual inspection and operational test.

f) Standard .

1 The equipment must be protected from water penetrationdepending on its degree of protection;

2 After the test, the equipment must function properly based on theNAPOLCOM Approved Standard Specifications.

7) Immersion Test

a) Purpose . This test is performed to determine if the item can withstandimmersion in water and operate as required following immersion.

b) Scope . Water proofing test has to be performed only on items with thefollowing degree of protection:

A. IEC 60529 Ingress Protection (IP) StandardProtectio

nProtected against Testing for Details

IP_7 Immersion up to1 m

Ingress of water in harmfulquantity shall not be possiblewhen the enclosure isimmersed in water underdefined conditions of pressureand time (up to 1 m ofsubmersion)

Test duration: 30 minutesImmersion at depth of 1 m

IP_8 Immersion beyond1 m

The equipment is suitable forcontinuous immersion in waterunder conditions which shall bespecified by the manufacturer.

Normally, this will mean thatthe equipment is hermeticallysealed. However, with certaintypes of equipment, it canmean that water can enter butonly in such a manner that itproduces no harmful effects.

Test duration: continuousimmersion in waterDepth specified bymanufacturer

c) Conditions . Conduct this test under standard temperature andpressure.

d) Test Duration . Thirty (30) minutes minimum.

e) Equipment and Materials Needed .



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1 Digital Communications Analyzer;2 Plastic or steel drum filled with water;3 Steel tape;4 Timer; and

5 Dry cloth.

f) Depth of Immersion.

1 Complete Immersion . For testing the integrity of a test item, eitheruse a 1 m. representative covering depth (measured from theuppermost surface of the test item to the surface of the water) orapply an equivalent pressure.

2 Partial Immersion . Where materiel is unlikely to be completelyimmersed either due to anticipated water depths or its ability tofloat, and being unlikely to be restrained, a partial immersion testmay be appropriate. In this case, specify depths as being measuredfrom the base of the materiel rather than from the top.

g) Procedures .

1 Fill a steel drum or plastic-up gas drum with 1 0.1 m. fresh water;


One (1)meter

One (1)meter


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Note: This step is not applicable when conducting salt waterimmersion test.

2 Immerse the equipment in water so that the uppermost point is 1 0.1 m. below the water surface. Minimum immersion time is thirty

(30) minutes or as specified in the technical manual of theequipment;

3 After the immersion period, remove the equipment from the waterand wipe it with dry cloth for at least five (5) minutes to remove thewater on the surface; (Wipe it dry and let it stand for 5minutes?)I think the latter was better

4 Perform operational check and measure the RF power output,receiver sensitivity, and frequency error; and

5 Document the results of visual inspection and operational test.

h) Standard .

1 The equipment must be protected from water penetrationdepending on its degree of protection;


8) High Temperature Test

a) Purpose . This test is performed to determine the capability of the itemto operate at high temperature.

b) Test Duration . One (1) hour minimum.

c) Equipment and Materials Needed .

1 Digital Communications Analyzer;2 Thermometer; and3 Timer.

d) Procedures .

1 Place the equipment inside the test chamber;2 Turn-on heater of the test chamber and set the temperature to55C;

3 Allow the equipment to reach the temperature of 55C and maintainit at this temperature for forty-five (45) minutes;

4 With the equipment still in this environment, connect it to thestandard power supply and turn it on; and

5 Fifteen minutes after power-on, measure the RF power output,receiver sensitivity and frequency error of the equipment todetermine whether it meets the requirements.

e) Standard .



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i. Durability Test

1) Antenna Durability Test

a) Purpose . This test determines if the antenna of handheld radios canwithstand accidental bending or twisting during its life span.

b) Scope. This is applicable only to handheld rubber ducky/flexibleantenna.

c) Procedure . Bend the antenna to an angle of 45 on both sides from themidpoint forone hundred (100) times.

d) Standard . The antenna should not be broken after being bent for onehundred (100) times.

2) PTT Switch Durability Test

a) Purpose. This test determines if the push button switch of theequipment can handle recurrent press and release cycle.

b) Procedure .

1 Press and release the push button switch five hundred (500) times;and

2 Document the test result.

c) Standard .

1 Push button switch should not wear out after the test wasconducted.

7. RESCISSION

All other Test Procedures, Guidelines or SOPs contrary to or inconsistent withthe provisions of this test procedure are hereby rescinded, modified or amendedaccordingly.

8. EFFECTIVITY

This Memorandum Circular shall take effect immediately upon approval.



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ALAN LA MADRID PURISIMAPolice Director GeneralChief, PNP


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