Table D1. Test Equipment and Accessories

(10) Inspect solder connections for missing

Applicable

Qty

Literature

Reqd

Equipment

solder, cold solder, insufficient solder, excessive

Resistor, 150 ohms 5%, 1

solder, and improper wrap.

watt

(11) Inspect for illegible, incorrect, or missing

Resistor, 470 ohms 5%, 1

markings.

watt

Capacitor, 0.2 ufd, 400 vdc 1

(12) Inspect for corrosion, dirt, moisture, and

fungus.

(1) Standard conditions. Standard conditions

(13) Inspect all hardware and parts for dam-

hereafter referred to, will be as follows or as

age and condition.

otherwise specified:

(14) Inspect the equipment for applicable

(a) Power supply voltage: 27.5 0.5 volts

modification work orders. A listing of current

dc.

modification work orders will be found in DA

(b) Radio set turned to ON, the OFF-

Pam 310-7.

PTT-RETRAN-HOME control set to PTT.

d. Bench Test Requirements. Bench tests are re-

quired to assure that the equipment operates satis-

(d) Operational duty cycle: 1 minute

factorily and has not been damaged in shipping

transmit, 10 minute receive.

and handling. Radio Sets AN/ARC54 ( ) in

(e) Output impedance: RF52 ohms, audio

storage for a period of time are subject to de-

150 ohms.

terioration and bench tests shall be conducted on

(f) Output level: RF 10 watts, audio 50

all items prior to shipment, and at required in-

milliwatts, (2.73 Vrms across 150 ohms. )

tervals. The bench tests shall be conducted in a

(g) Input impedance: RF 52 ohms, audio

screen or RF shield room with the equipment

150 ohms.

under test arranged so the component parts and

(h) Transmitter input level: audio 0 dbm

adjustrnents are readily accessible. The power

at 1000 Hz (0.37 Vrms across 150 ohms).

source shall include suitable filtering and over-

load protection.

(2) Input requirements. (Electrical power).

Radio set AN/ARC-54 operates from a 27.5 volt

NOTE

dc power source having characteristics as defined

Equivalent test equipment may be sub-

in MIL-STD-704. A maximum of 7.4 amperes at

stituted.

27.5 volts dc is required under transmit conditions.

Table D1. Test Equipment and Accessories

(3) Test procedures. Receiver-transmitter

RT348( )/ARC54 shall be installed in mount-

Applicable

Qty

Equipment

Literature

Reqd

ing MT-1535( )/ARC54 when conducting the

RF Wattmeter AN/URM-

TM 11-6625-446-15

following tests. Suitable access holes shall be pro-

120

vided in the underside of the mounting and bottom

Audio Oscillator TS-382 A/U

TM 11-6625-261-12

plate used to allow adjustments to the transmit

Frequency meter AN/USM-

TM 11-6625-212-15

and receive audio modules specified herein.

Modulation meter ME-57/U

TM 11-6625-400-12

CAUTION

Vacuum Tube Voltmeter

TM 11-6625-239-12

Damage may occur to the receiver-trans-

TS 505/U

m i t t e r unit when inserted into the

Signal Generator AN/URM-

TM 11-1257

mounting with the dust cover removed.

Attenuator fixed (50 ohms

The damage can be prevented by ele-

20 db)

vating the back of the receiver-trans-

Indicator ID-1351/A

TM 11-5895-537-50

mitter unit during installation to insure

Indicator ID-48/ARN

TM 11-5840-270-50

proper alignment of the connectors.

Deviation Meter ARF AR-1B

(4) Transmitter tests. Refer to figure 1. Con-

Frequency Converter CV-

TM 116625-604-15

nect the RF wattmeter AN/URM120 to the an-

394/USA-5

tenna receptacle on the rear of the receiver-

Mounting MT-1535 ( )/

ARC-54

transmitter with a convenient length of cable

Attenuator, 50 ohms, stepped

RG-58/U or RG-223/U.

in 1 db steps

CAUTIONS

Radio Set Control C-3835/

1. Do not transmit with the signal

ARC-54

g e n e r a t o r and pad connected to the

Test Harness