TB 9-6625-2124-24
Adjustments required to calibrate the TI are included in this procedure. Additional
maintenance information is contained in the manufacturer's manual for this TI.
d. Unless otherwise specified, all controls and control settings refer to the TI.
19. 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.
NOTE
TI must be inserted into a calibrated Hewlett-Packard, Model
8350 mainframe.
a. Remove TI protective cover as required for adjustment.
b. Connect mainframe to autotransformer (A2).
c. Connect autotransformer to a 115 V ac source and adjust for 115 V output.
d. Set LINE switch to ON and allow at least 1 hour for equipment to warm-up and stabilize.
NOTE
Due to many revisions of circuit boards in the TI, it may be
necessary to refer to the manufacturer's manual to locate
adjustments and test points on some TI's.
20. CW Frequency Accuracy and Stability
a. Performance Check
(1) Connect equipment as shown in figure 2.
NOTE
Connect to microwave frequency counter input 1 or 2 as
determined by frequency measurement requirement.
(2) Press function keys and enter corresponding data on keyboard as listed in as
listed in (a) through (c) below:
(a) INSTR PRESET key.
(b) CW key, DATA ENTRY 50 MHz.
(c) POWER LEVEL key, DATA ENTRY 10 dBm.
(3) Adjust FREQ CAL for microwave frequency counter indication of 50.00 MHz.
counter will indicate between 5.0 and 15.0 MHz; if not, perform b below.