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Figure 8. Adjustment locations - type DC509.

Calibration Procedure For Counters Types Dc 501, Dc 501Opt01, Dc 503, Dc 503Opt01, Dc 503A, Dc 503Aopt01, Dc 504, Dc 504A, Dc 508, Dc 508Opt01, Dc 508Aopt01 And Dc 509 Page Navigation
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TB 9-6625-1982-24
43. Power Supply
NOTE
Do not perform power supply check and adjustment if all other
parameters are within tolerance.
a. Set the multimeter to the 20 V dc range.
b. Connect the multimeter LOW test lead to the TI COM  , and multimeter VOLTS/
test lead to TI TP1341 +3.2 V (fig. 8). Adjust R1301 +3.2 V Adj (fig. 8) for a reading of
3.200 V.
c. Remove test lead from TP1341 +3.2 V (fig. 8) and connect to TP1631 -12 V (fig. 8).
Check the multimeter readout indicates between -11.400 V and -12.600 V.
d. Remove all test leads from TI.
e. If power supply was adjusted repeat paragraphs 41 and 42.
44. Final Procedure
a. Deenergize and disconnect all equipment.
b. Annotate and affix DA label/form in accordance with TB 750-25.
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