TB 9-6625-2265-24
IDENTIFICATION AND DESCRIPTION
1. Test Instrument Identification.
This bulletin provides instructions for the
calibration of Digital Multimeter, Ballantine, Model 3100A. 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 1
hour 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. 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 specifications (3 1/2 digit display)
parameters
Dc voltage
Range: 0 to 1000 V (in 5 ranges)
Accuracy:
(0.1% of reading + 1 digit)
Ac voltage
Range: 0 to 750 V (in 5 ranges)
Frequency: 40 Hz to 5 kHz
Accuracy:
(% of reading + digits)
Range
Frequency
40 Hz to 1 kHz
1 to 2 kHz
2 to 5 kHz
200
mV
.75 + 2
1.5 + 3
5.0 + 5
2
V
20
V
200
V
N/A
750
V
1.0 + 2
N/A
N/A
Range: 0 to 20 M (in 6 ranges)
Accuracy:
(% of reading + digits)
Range:
200 .......................................................
0.2
+
3
2 through 200 k ....................................
0.1
+
1
2 M ........................................................
.15
+
1
20 M ......................................................
2.0
+
1