TB 9-6625-2124-24
CALIBRATION PROCESS FOR PLUG-IN, HEWLETT-PACKARD MODEL 83525A
11. Preliminary Instructions
a. The instructions outlined in paragraphs 11 and 12 are preparatory to the calibration
process. Personnel should become familiar with the applicable sections before beginning
the calibration.
b. Items of equipment used in this procedure are referenced within the text by common
name as listed in table 2.
c. Unless otherwise specified, verify the result of each test and, whenever the test
requirement is not met, take corrective action before continuing with the calibration.
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.
12. 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.
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.
13. 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.