TB 9-6625-2020-35
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Dc volts .....................................................................
Ohms ........................................................................
Dc current.................................................................
Ac volts .....................................................................
Ac decibels.................................................................
Power supply.............................................................
Final procedure .........................................................
SECTION I
IDENTIFICATION AND DESCRIPTION
1. Test Instrument Identification. This bulletin provides instructions for the
calibration of Digital Multimeter, Tektronix, Types DM 502 and DM 502A. The
manufacturer's manuals were used as the prime data sources in compiling these
instructions. The equipment being calibrated will be referred to as the TI (test
instrument) throughout this bulletin.
a. Model Variations . None.
b. Time and Technique. The time required for this calibration is approximately 2
hours, using the dc and low frequency technique.
2. Forms, Records, and Reports
a. Forms, records, and
reports required for
calibration personnel at all
levels are
prescribed by TB 750-25.
b. Adjustments to be reported are designated (R) at the end of the sentence in which
they appear. When adjustments are in tables, the (R) follows the designated adjustment.
Report only those adjustments made and designated with (R).
3. Calibration Description. TI
parameters and
performance specifications which
pertain to this calibration are listed in table 1.
Table 1. Calibration Description
Test instrument
Performance
parameters
specifications
Type DM 502
Dc volts
Range:
0 to 1000 V in 5 ranges
0.1% of reading, 1 count
Accuracy:
Ac volts
Range:
0 to 500 V in 5 ranges
40 Hz to 10 kHz, 0.5% of reading, 1 count
Accuracy:
20 to 40 Hz and 10 to 20 kHz, 1.0% of reading, 1 count
2