R-1467(P)/GRC-144(V) and R-1467(P)A/GRC-144(V) Frequency Accuracy Test

TM 11-5820-695-35

d. Procedure.

Control setting

Step .

Test Equipment

Equipment under Test

Test procedure

Performance Standard

No.

AN/USM-161

N/A

Remove Dummy load Electrical

a. None.

POWER RANGE

DA-541/GRCfrom Adapter,

10 MW

Waveguide UG-1883/GRC.

+ 10 DBM

Connect the equipment as shown in b. None.

POWER: 1.0

figure 3-29.

BIAS-READ: READ

Set Switch, Waveguide

None.

COMP ATTENUATOR: 0

SA-1679/GRC to the TO LOAD

(TEST) position.

Set the controls on radio frequency

d. None.

bandpass filter 1FL3 and electrical

frequency synthesizer 1A14 to

4400.0 MHz.

Calculate the calibration plate

e . T-1054(P/GRC-I44(V) output

correction factors for both

as indicated on AN/JSM-161 shall

CG-2514/U. And the CG-251/U

be 150 milliwatts minimum.

Algebraically add the

correction factors .If the sum of

the correction factors is between

-2.2 db and +2.2 db; set the

COMP ATTENUATOR dial on

the AN/USM-161 for the com-

puted correction factor and read

the outermost scale on the

POWER control indicator, after

it is adjusted for a null indication

on the NULL INDICATOR

meter .Multiply this indication by

1000 to obtain the

T-1054(p)/GRC-144(V)-output power in

milliwatts. If the computed

correction factor is not between

2.2 db, refer to TM

11-6625-498-12 to determine the

AN/USM-161 power indication.

2. Same as step 1.

N/A

.Set the controls on radio frequency

a. None.

bandpass filter 1FL3 and electrical

frequency synthesizer 1A14 to

4700.0 MHz.

Same as step 1e.

b. Same as step 1e.

3. Same as step 1.

N/A

Set the controls on radio frequency

a. None.

bandpass filter 1FL3 and electrical-

frequency synthesizer 1A14 to

5000.0 MHz.

Same as step 1e.

b. Same as step 1e.

3-73.

R-1467(P)/GRC-144(V) and

R-1467(P)A/GRC-144(V) Frequency

(3) TNC male to BNC female adapter (part of Meter

Accuracy Test

Calibration Facilities Kit MK-1207/GRC).

b. Test Connections and Conditions. Record the R-

Test Equipment and Materials.

1467(P)/GRC -1440) operating frequency.

(1) Counter Electronic, Digital Readout AN/USM-207.

c. Initial Test Equipment Calibration Turn on the KNIUSM-

207 (TM 11762500-10) and allow a 15minute warmup period.

(2) Selector Adapter, type 50-177-6801 (part of Meter

Calibration Facilities Kit MK-1207/GRC).

Change 6

3-91