CV-3633/GRC-144(V) Receive Section Conversion Gain Test

TM 11-5820-695-35

3-79.

CV-3633/GRC-144(V) Receive Section

(2) Insure that transmit waveguide switch is set to

Conversion Gain Test

the 15 GHz TEST (TO LOAD) position. For the

AN/GRC-144(V)4 optional configuration, insure that

a. Test Equipment and Materials.

Switch, Waveguide SA-1679/GRC is set to the TO

LOAD (TEST) position.

(1) Signal Generator, Hewlett Packard 626A.

(2) Frequency Counter, Hewlett Packard 5340A.

(3) Power Meter, Hewlett-Packard 432A.

(4) Thermister Mount, Hewlett Packard P486A.

(5) Thermister Mount, Hewlett Packard 478A.

(6) Adapter SMA(M) to N(F) Narda 57.

(3) Open waveguide connection at Converter-

Multiplier CV-3633/GRC-144(V) ANT 34 output and first

(7) Adapter Waveguide Coax N(F) Narda 609.

shelter waveguide connection by removing screws that

secure Waveguide and the CV-3633/GRC-144(v)

(8) Directional Coupler, Hewlett-Packard P752D.

together.

(9) Test Cable, N(M) to N(M), Pamona 1658-T-60.

(4) Move the waveguide to a safe location.

(10) Waveguide, Flexible Waveguide HP 11503A

CAUTION

Do not support test

b. Test Connections and Conditions

equipment by

waveguides. Test

NOTE

equipment must be

properly supported on

To perform the CV-

a suitable equipment

3633/GRC-144(V)

rack.

receive section

conversion gain test,

NOTE:

the waveguide

Locate the test

connection at 3AJ4

equipment close to the

ANT waveguide flange

CV-3633/GRC-144(V).

must be open.

NOTE

(1) Record the CV-3633/GRC-144(V) BP filters 3A3

Connect power meter to

and 3A4 dial settings.

directional coupler shown

with dashed line.

NOTE

(5) Interconnect the test equipment

Disregard status panel

accordance with the test setup shown in figure 3-40.

waveguide switch

FREQUENCY BAND IN

USE and transmitter

c. Initial Test Equipment Calibration.

WAVEGUIDE SW

Turn on the test equipment and allow a 30 minute

indicator alarms.

warmup period. Use the following technical manual

procedure to calibrate the test equipment.

Item

Technical Manual

Signal Generator, HP

626A

TM 11-6625-2910-14

Frequency Counter, HP

5340

TM 11-6625-2808-14

Power Meter, HP 432ATM 9-6625-2469-15

Change 6

3-112