TB 9-6625-2079-24
d. When indications specified in paragraphs 8 through 12 are not within tolerance,
perform the power supply check prior to making adjustments. After adjustments are made,
repeat paragraphs 8 through 12. 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
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 protective cover as required for adjustment.
b. Adjust level control to AUTO and press pushbuttons as listed in (1) through (6) below:
(1) TUNING to AUTO.
(2) HIGH-PASS (Hz) to 30.
(3) LOW-PASS (kHz) to 15.
(4) PEAK to PK-PK divide by 2.
(5) RANGE to 100.
(6) FUNCTION to kHz DEV.
c. Insure that line voltage card in TI power connector is set to 120.
d. Connect TI to a 115 V ac power source.
e. Set power switch to ON and allow sufficient time for equipment to warm-up.
8. Input Sensitivity
a. Performance Check
(1) Connect synthesized signal generator RF Output to TI RF IN.
level to -26.99 dBm. If TI LOCK annunciator does not stop flashing, perform b below.
(3) Repeat (2) above at a synthesized signal generator frequency of 500 MHz.
(4) Adjust synthesized signal generator frequency controls for 1.2 GHz and set
output level to -17.45 dBm. If TI LOCK annunciator does not stop flashing, perform b
below.
b. Adjustments
(1) Remove RF assembly cover and adjust A3R27 (figure 1) until lock annunciator
stops flashing (R).