TB 9-6625-1956-35
SECTION I
IDENTIFICATION AND DESCRIPTION
1.
Test Instrument Identification.
This bulletin
a.
Forms, records, and reports required for
provides instructions for the calibration of Calibrator,
calibration personnel at all levels are prescribed by TB
Hewlett- Packard,Model 8477A.The
manufacturer's
750-25.
manual was used as the prime data source in compiling
b. Adjustments to be reported are designated (R)
these instructions.The equipment being calibrated will
at the end of the sentence in which they appear.When
be referred to as the TI (test instrument) throughout this
adjustments are in tables, the (R) follows the designated
bulletin.
adjustment. Report only those adjustments made and
designated with (R).
a Model Variations. None.
3. Calibration Description. TI parametersand
b. Time and Technique.The t i m e required for
performance specifications which pertain to
this
this calibration is approximately 2 hours, using the dc
2. Forms, Records, and Reports.
Table 1. Calibration Description
Test instrument
Performance
parameter
specifications
Calibration points
Output:
Voltages corresponding to meter indications of 0.01, 0.03, 0.1, 0.3,
1, 3, and 10 mV
Accuracy:
0.5% on 0.01 and 0.03 mW ranges from +20 to +30C
0.2% on 0.1 to 10 mW ranges
V comp, set, and check
V comp:
200Ω: 5.9 V on 0.01 through 3.0 mW ranges and 3.1 V on 10.0 mW range
100Ω: 2.2 V on 0.01 through 10.0 mW ranges
Tolerance: 0.003 V
Set: 5.9 V dc
Tolerance: 0.01 V
Check: 2.2 V
Tolerance: 0.01 V
2