TB 9-6625-2023-35
IDENTIFICATION AND DESCRIPTION
1. Test Instrument Identification.
This bulletin provides instructions for the
calibration of Digital Voltmeter, Hewlett-Packard Model 3455A. 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 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
parameters
Performance specifications
Dc voltage
Range: 0 to 1000 V in 5 ranges
Accuracy (high resolution off):
0.1 V range: (0.010% of reading + 5 digits)
1 V range: (0.009% of reading + 1 digit)
10 V range: r(0.008% of reading + 1 digit)
100 and 1000 V range: (0.010% of reading + 1 digit)
Accuracy (high resolution on):
1 V range: (0.009% of reading + 5 digits)
10 V range: (0.008% of reading + 3 digits)
100 and 1000 V range: (0.010% of reading + 3 digits)
Range: 0 to 1000 V in 4 ranges1
Ac voltage
Accuracy:
(0.06% of reading + 60 digits) 30 Hz to 20 kHz
(0.6 % of reading + 130 digits) 20 to 100 kHz
(2.1 % of reading + 300 digits) 100 to 250 kHz
(5.1 % of reading + 600 digits) 250 to 500 kHz
(6.3 % of reading + 3500 digits) 500 kHz to 1 MHz
Inputs above 500 V multiply tolerance by 1500 + ~Vin~1000
See footnotes at end of table.
