TB 9-6625-1982-24
IDENTIFICATION AND DESCRIPTION
This bulletin provides instructions for the
1. Test Instrument Identification.
calibration of Counters, Tektronix, Types DC501, DC501OPT01, DC503, DC503OPT01,
DC503A, DC503AOPT01, DC504, DC504A, DC508, DC508OPT01, DC508AOPT01 and
DC509. The manufacturers' manuals were used as the prime data source in compiling
these instructions. The equipment being calibrated will be referred to as the TI (test
instrument) throughout this bulletin.
a. Model Variations. Variations among models are described in the text, tables,
and figures.
b. Time and Technique. The time required for this calibration is approximately 2
hours per instrument, 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 parameters
Performance specifications
Tektronix, Types DC501 and DC501OPT01
Frequency
DC501 & DC501OPT01
Range:
10 Hz 110 MHz
100 mV rms (<300 mV p-p)
Sensitivity:
Time Base
Internal Crystal
1 MHz
1 X 10-5
DC501
Temperature Stability:
1 X 10-5/month
Aging Rate:
Time Base Error (year):
130 PPM
Adjustable to 1 X 10-7 or better
Setability:
5 X 10-7
Temperature Stability:
5 X 10-7/month
Aging Rate:
DC501OPT01
Time Base Error (year):
6.5 PPM
Adjustable to 5 parts in 10-9 or better
Setability:
