TB 9-6625-2080-24
d. Connect multimeter to dc power supply No. 2 observing polarity.
e. Adjust dc power supply No. 2 for a +5.0 V output as indicated on multimeter and
allow at least 72 hours for stabilization.
a. Performance Check
(1) Connect a 1 MHz output signal from time frequency workstation to REF INPUT
(2) Connect TI output jack to SIG INPUT of frequency difference meter.
(3) Remove protective bolt (on rear of TI) to gain access to adjustment and adjust
FREQUENCY ADJUST for minimum difference indication on frequency difference meter.
(4) Allow at least 24 hours for oscillator stabilization. Frequency difference meter
will not change more than 1 part in 109.
b. Adjustments. No further adjustments can be made.
a. Deenergize and disconnect all equipment.
b. Annotate and affix DA label/form in accordance with TB 750-25.
15. Preliminary Instructions
a. The instructions outlined in paragraphs 15 and 16 are preparatory to the calibration
process. Personnel should become familiar with the entire bulletin 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 results 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 these TI's.
d. Unless otherwise specified, all controls and control settings refer to the TI.
a. Connect dc power supply No. 1 positive output terminal to pin P of J2 on TI and
negative output terminal to pin L of J2 on TI.
b. Adjust Dc power supply No. 1 for a +26.0 Vdc output and allow at least 72 hours for
stabilization.