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Final Procedure - TB-9-6625-1314-350029
Dc Volts and Stability

TB-9-6625-1314-35 Digital Voltmeter Hewlett-Packard Model 3439A or C28-3439A with C15-3444A and 344A Plug-Ins; Digital Voltmeter Hewlett-Packard Manual
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TB 9-6625-1314-35
SECTION VI
CALIBRATION PROCESS FOR DIGITAL MULTIMETER,
DATA TECHNOLOGY MODEL 360
24. Preliminary Instructions
a. The instructions outlined in paragraphs 24 and 25 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
name and item identification number as listed in tables 4 and 5. For the identification of
equipment referenced by item numbers prefixed with A, see table 4, and for prefix B, see
table 5.
WARNING
HIGH VOLTAGE is used during the performance of this
calibration. DEATH ON CONTACT may result if personnel
fail to observe safety precautions.
NOTE
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 this TI.
NOTE
Unless otherwise specified, all controls and control settings
refer to the TI.
25. Equipment Setup
a. Connect TI to autotransformer (A5).
b. Connect autotransformer to 115 V ac source and adjust for 115 V.
c. Set TI POWER switch to ON and allow at least 30 minutes for warm-up.
d. Press DC function and .2 range switch.
e. Connect lead (B3) between TI VOLTS and COM terminals.
f. If necessary adjust ZERO control (fig 6) to obtain an indication of 000.0 on TI.
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