TB 9-6695-272-35
6. Preliminary
Instructions
a. The
instructions outlined in
paragraphs 6 and
7 are preparatory to the
calibration
process. Personnel should become familiar with the entire procedure before beginning the
calibration.
b. Items of equipment used in this procedure are referenced within the text by common
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.
When indications specified in
paragraphs 8 through 13 are not within
tolerance,
perform the power supply check prior to making adjustments. After adjustments are made,
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.
HIGH VOLTAGE is used or exposed during the performance of
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. Connect TI to a 115 V ac source.
b. Press ON-STBY/POWER pushbutton to ON, and allow at least 24 hours for TI to
reach operating temperature.
c. Set 50 Ω/75 Ω switch to 50 Ω.
d. Connect 10 MHz REF OVEN OUTPUT to 40/N M/Hz REF INPUT (rear panel),
using BNC to BNC adapter supplied with TI.
8. Oscillator and Stability
a. Performance Check
(1) Connect 1 MHz OUTPUT of time/frequency workstation to REF INPUT of
frequency difference meter.
(2) Connect TI 10 MHz OUTPUT (rear panel) to SIG INPUT of frequency
difference meter.