TB 9-6625-2004-35
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.
b. Connect TI to a 115 V ac source.
c. Set TI POWER ON/OFF switch to ON and allow 30 minutes for warm-up
and stabilization.
8. RF Oscillator Accuracy
a. Performance Check
(1) Position controls as listed in (a) through (d) below:
(a)
TUNE/FINE TUNE switch to TUNE.
(b)
FREQUENCY RANGE-MC switch to 20-55.
(c)
FREQUENCY-MC dial to 20 using TUNING knob.
(d)
DEVIATION RANGE KC switch to 1000 TUNE.
(2) Connect signal generator OUTPUT RF to TI INPUT.
(3) Set signal generator for an initial 20 MHz, 5 mV output.
indication will be between 18.00 and 22.00 MHz.
NOTE
If TI interference is encountered during this check,
momentarily disconnect TI, verify generated frequency on
frequency counter, and reconnect TI.
(5) Repeat technique of (3) and (4) above using settings listed in table 4. If signal
generator does not indicate within limits specified, perform b below.
