TB 9-6625-1957-35
13. Final Procedure
a. Deenergize and disconnect all equipment.
b. Annotate and affix DA label/form in accordance with TB 750-25.
CALIBRATION PROCESS FOR DIGITAL MULTIMETER
TEKTRONIX, TYPES DM 501A AND DM 501AOPT02
14. Preliminary Instructions
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 as listed in table 2.
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 manufacturers' manuals for this TI.
d. Unless otherwise specified, all controls and control settings refer to the TI.
15. Equipment Setup
WARNING
HIGH VOLTAGE is used or exposed during the performance of
this calibration.
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. Remove protective cover from TI only to make adjustments and replace upon
completion.
b. Connect TI to power module using an extender. Connect power module to a 115 V ac
source. Pull power module PWR switch to ON and allow at least 30 minutes for
stabilization.
16. Dc Voltage
a. Performance Check
(1) Press TI pushbuttons as listed in (a) through (c) below:
(a) VOLTS DC (in).
(b) 2 V range (in).
(c) INPUT EXT/INT (out).
