TB 9-4931-405-40
IDENTIFICATION AND DESCRIPTION
1. Test Instrument Identification.
This bulletin provides instructions for the
calibration of Instrument Shunt, Guildline, Model 9711 and Multirange Instrument Shunt,
Rubicon, Model 2759. The manufacturers' manuals were used as the prime data sources 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 text.
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. Forms, records, and reports required for calibration
personnel at all levels are prescribed by TB 750-25.
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
Current rating
Range resistance
(plug position)
Accuracy
( )
( %)
(A)
Guildline, Model 9711
0.000333
300
0.10
0.001
100
0.05
0.01
10
0.01
0.10
1.0
0.01
1.0
0.1
0.01
10.0
0.01
0.01
100
0.001
0.01
1000
0.0001
0.01
10000
0.00001
0.01
Rubicon, Model 2759
0.01
15
0.01
0.10
1.5
0.01
1.0
0.15
0.01
10.0
0.015
0.01
100
0.0015
0.01
1000
0.00015
0.01
10000
0.000015
0.01