TB 9-6625-2224-24
repeat paragraphs 8 through 13.
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.
f. Unless otherwise specified, all control settings and indications in parenthesis refer
to Hewlett-Packard, Model 8616A.
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. Connect TI to autotransformer.
c. Connect autotransformer to a 115 V ac source and adjust for 115 V output.
d. Position controls as listed in (1) through (5) below:
(1) LINE pushbutton pressed to in position.
(2) All remaining pushbuttons released to out position.
F control centered.
(3)
(4) FREQUENCY (MC) control to 0800 (1800).
(5) ATTENUATION (DB) control to 000.
e. Observe DBM meter pointer is on ZERO SET mark. If not, adjust ZERO SET.
f. Allow at least 30 minutes for equipment to warm up and stabilize.
8. Frequency and Stability
a. Performance Check
(1) Connect microwave frequency counter to RF POWER OUTPUTS CAL.
NOTE
Before INTERNAL ALC pushbutton is pressed to in position
in (2) below, DBM meter should indicate approximately
+1 dBm.
(2) Press RF and INTERNAL ALC pushbuttons to in position and adjust ALC
CAL OUTPUT control for a 0 indication on DBM meter. If microwave frequency counter
does not indicate between 795 and 805 MHz (1790 and 1820 MHz), perform b below.
Record microwave frequency counter indication.