TB 55-4920-431-35
(5) Adjust test oscillator for 1089Hz indication on electronic counter.
Adjust potentiometer R27 SPAN adjustment on TI FREQ/ANALOG CONVERTER as shown in
(6) Repeat technique b(4) and (5) above for optimum adjustments.
11.
Final Procedure.
a.
De-energize and disconnect all equipment and reinstall protective cover on TI.
b. When all parameters are within tolerance, annotate and affix DA Label 80 (US
Army Calibrated Instrument). When the TI receives limited or special calibration,
annotate and affix DA Label 163 (US Army Limited or Special Calibration). When the
TI cannot be adjusted within tolerance, repair the TI in accordance with the
maintenance manual. When repair is delayed for any reason or the TI cannot be
repaired with local resources, annotate and affix DA Form 2417 (US Army Calibration
System Rejected Instrument) and inform the owner/user accordingly in accordance
with TB 750-25-1.
Table 6.
Temperature Indicator ( F) Check
TI Temperature Indicator
Electronic Counter Indication (Hz)
Min
Indication ( F)
Max
571
610
600
737
775
900
942
904
1200
1110
1068
1500
9