TB 9-4920-358-35
6. Preliminary Instructions
process. Personnel should become familiar with the entire bulletin before beginning the
calibration.
b. Items of equipment used in this procedure are referenced within the text by common
name as listed in table 2.
c. Unless otherwise specified, verify the result of each test and, whenever the test
requirement is not met, take corrective action before continuing with the calibration.
Adjustments required to calibrate the TI are included in this procedure. Additional
maintenance information is contained in the manufacturer's manual for this TI.
perform the power supply check prior to making adjustments. After adjustments are made,
repeat paragraphs 8 through 17. Do not perform power supply checks if all other
parameters are within tolerance.
e. Unless otherwise specified, all control and control settings refer to the TI.
7. Equipment Setup
HIGH VOLTAGE is used or exposed during the performance of
this calibration.
DEATH ON CONTACT may result if
personnel fail to observe safety precautions.
REDUCE
OUTPUT(S) to minimum after each step within the
performance check where applicable.
NOTE
Do not operate TI with ANTENNA unloaded. When required,
use a 50 Ω termination; do not use a feedthrough.
a. Remove front panel and chassis assembly from case.
b. Set TI switches as listed in (1) through (4) below.
(1) MODE switch to 2.
(2) REFERENCE CODE switches to 7700.
(3) FUNCTION switch to SYSTEM.
(4) SYSTEM TYPE switch to SINGLE CHANNEL.
c. Connect 115 V ac or 28 V dc power source to TI and set appropriate POWER
switch to ON.
d. Allow 30 second warm up, then set TEST switch to ON. REJECT lamp will light.
