TB 9-6625-2155-24
repeat paragraphs 8 through 14.
Do not perform power supply check if all other
parameters are within tolerance.
e. Unless otherwise specified, all controls and control settings refer to the TI.
7. Equipment Setup
WARNING
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.
a. Remove TI from protective cover only as necessary to make adjustments. Replace
cover after completing the adjustments.
NOTE
Many indications, such as MESSAGE, F, SWEEP FREQ
START, etc., will only appear when the appropriate entry
pushbutton is pressed and held in the IN position.
b. Connect TI to a 115 V ac power source.
c. Set LINE switch to ON and allow a 2 hour warm-up and stabilization.
d. Connect FREQUENCY STD INT connector of TI to SIG INPUT of frequency
difference meter. Set FREQUENCY STANDARD INT/EXT SWITCH to INT.
e. Connect 1 MHz output of GPS time/frequency workstation to REF INPUT of the
frequency difference meter.
f. A d j u s t A 3 A 8 F R E Q A D J U S T ( f i g . 1 ) fo r m i n i m u m f re q u e n c y d i f fe re n ce
m e te r indication.
Figure 1. Frequency adjust location.