Section IV. CALIBRATION AND ADJUSTMENT

TM 11-5820-695-35

Figure 3-26. AN/GRC-144 connector repair tools.

Section IV. CALIBRATION AND ADJUSTMENT

procedure are not obtained, refer to the troubleshooting

3-54. General

charts (para 3-) for corrective action.

This section contains procedures for

3-55. Calibration of Transmitter Meter 1A15A8M1

calibrating and adjusting the T-1054 (P)/GRC -144(V), T

-1054 (P)A/GRC -144 V), R-1467(P)/GRC-144(V), and

Set POWER ON/OFF switch 1A15A8S3 on

R-1467(P)A/ GRC-144(V). The calibration procedures

are performed at periodic maintenance intervals (para 3-

meter panel assembly 1A15A8 (fig. 3-1) to OFF.

3) to maintain calibration accuracy of the transmitters

Turn meter selector switch 1A15A8S4 on

and receivers metering circuits, or when troubleshooting

indicates that calibration is required. The adjustment

meter panel assembly 1A15A8 to OFF (TRANSIT).

procedures are performed when troubleshooting

indicates that an adjustment is required.

Using a screwdriver, adjust the screw on the

front of meter 1A15A8M1 for a zero meter indication.

All of the procedures contained in this

section assume that the AN/GRC144(V) is turned on

Turn meter selector switch 1A15A8S4 on

and connected for normal operation at the start of each

meter panel assembly 1A15A8 to TEST LEAD (+).

procedure. If trouble is encountered during performance

of a procedure, or if the indications specified in the

Change 6

3-75