Periodic Calibration Checks and Tests

TM 11-5820-695-35

3-3. Periodic Calibration Checks and Tests

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

and

R-

1467(P)A/GRC-144(V) if gain and carrier alarm test

Periodic calibration checks and tests (listed in a through

(para 3-75).

c below) must be performed by direct support

(6) AN/GRC-144(V)4 output power test at

maintenance personnel as part of preventive

14.4 to 15.0 6Hz and power alarm calibration (para 3-

maintenance. The calibration checks and tests must be

76).

performed at the interval specified, and should be

(7) CV-3633/GRC-144(V) reflected power

scheduled concurrent with other maintenance activities.

alarm threshold test and calibration (para 3-77).

The maintenance interval specified in a through c below

(8) CV-3633/GRC-144(V) local oscillator

is based on a 40hour week. If the equipment is used for

frequency accuracy test and alarm calibration (para 3-

longer periods, the maintenance intervals must be

78).

adjusted to compensate for the extended operation of

the equipment. Maintenance forms and records to be

b. Semiannual Calibration Checks and Tests.

used and' maintained on this equipment are specified in

TM 38750. If trouble is encountered during performance

of the calibration checks and test, refer to the

(1) Calibration of T-l054(P)/GRC-144(V) and

troubleshooting charts (para 36 and 3-12b) for

T-1054(P)A/GRC-144(V) rf power metering circuit (para

corrective action.

3-57).

(2) Calibration of T-1054(P)/GRC-144(V) and

NOTE

T-1054(P)A/GRC-144(V) reflected rf power metering

When performing periodic calibration

circuit (para 3-58).

checks and test for Radio Set AN/

(3) Calibration of T-1054(P)/GRC-144(V) and

GRC-144(V)4 it is necessary to break

T-1054(P)A/GRC-144(V) frequency multiplier metering

the K-band, 14.4 to 15.0 GHZ,

circuits (para 3-59).

waveguide connection at Converter-

(4) Calibration of T-1054(P)/GRC-144(V)

Multiplier CV3633/GRC-144 (V) J4

traffic metering circuit (para 3-60).

ANT output. After performing test

(5)

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

and

R-

and

reassembling

waveguide,

1467(P)A/GRC-144(V) local oscillator power test (para

pressurize waveguide system in

3-74).

accordance with the procedures

(6) CV-3633/GRC-144(V) receive section

given in TM-11-5985-335-15.

conversion gain test (para 3-79).

a. Quarterly Calibration Checks and Tests.

c. Yearly Calibration Checks and Tests.

(1) T-1054(P)/GRC-144(V)

and

T-

(1) Calibration of transmitter meter 1A15-

1054(P)A/GRC-144(V) frequency accuracy test (para 3-

A8Ml (para 3-55).

71).

(2) Calibration of transmitter meter 1A16-M2

(2) T-1054(P)/GRC-144(V)

and

T-

(para 3-56).

1054(P)A/GRC-144(V) output power test (para 3-72).

(3) Calibration of receiver meter 2A15A2-M1

(3) Calibration of T-1054(P)/ GRC-144(V) and

(para 3-63).

T-1054(P)A/(RC-144(V) radio test set (para 3-61).

(4) Calibration of R-1467(P)/GRC-144(V) and

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

and

1R-

R-1467(P)A/ GRC-144(V) traffic metering circuit (para

1467)P)A/GRC-144(V) frequency accuracy test (para 3-

3-64).

73).

(5) Calibration of R-1467(P)/ GRC-144(V)

and R-1467(P)A/GRC-144(V) local oscillator metering

circuits (para 3-65).

(6) Calibration of ID-1708/GRC metering 3M1

(para 3-67).

Change 6 3-2.1