TB 9-6625-2246-40
IDENTIFICATION AND DESCRIPTION
1. Test Instrument Identification.
This bulletin provides instructions for the
calibration of Multimeter, Hewlett-Packard Model 3458A. The manufacturer's manual was
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. None.
b. Time and Technique. The time required for this calibration is approximately 4
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. All software adjustments made in SECTION IV are reportable. Report software
adjustments made using parameter and range failing performance check; i.e., 10 V dc, 100 , etc.
3. Calibration Description. TI parameters and performance specifications which
pertain to this calibration are listed in table 1.
Test instrument
parameters
Performance specifications
Dc Voltage
Range: 0 to 1000 V (in 5 ranges)
Accuracy: (ppm of reading + ppm of range)
Range
Accuracy
100 mV
11 + 10.3
1V
10 + 1.1
10 V
10 + 0.3
100 V
12 + 0.4
121 + 0.2
1000 V
Range 0 to 1 G (in 9 ranges)
Accuracy: (ppm of reading + ppm of range)2
Range
Accuracy
18 + 6
10
15 + 6
100
13 + 0.6
1k
13 + 0.6
10 k
See footnotes at end of table