CHAPTER 2. VERIFICATION

TM 9-4931-381-14&P-1

CHAPTER 2

VERIFICATION

2-1.

General. This chapter tells you when to do the verification check on the test set. The

verification check is done semiannually (every 6 months) indicated by (S), tO make sure the test

set voltage reference is within tolerance. The verification check is also done after any

maintenance that requires removal of the electronics unit.

2-2.

Reference Voltage Verification Check.

Applicability: All Models

Common Tools:

Multimeter, Digital AN/USM-451B

Power Supply HP/6269B

Special Tools: TA-1 test probe set

Supplies: None

Personnel: One

Equipment Condition:

Thermal system test controlIer on a clean work surface.

Preliminary Procedures:

1. Prepare test set for operation; refer to volume 1, para. 4-17.

2. Set THERMAL MODE switch to ON.

Volume II

2-1

Para. 2- 1