TB 9-6625-2243-35
Table 3c. Model 73 Resistance
Performance Checks
Calibrator
Test instrument range
Error
Output
settings
display indications
settings
(Ω)
(%)
(Ω)
320
100
1.2
1
3200
1k
1.1
32 k
10 k
1.1
320 k
100 k
1.1
2
3.2 M
1M
1.1
32 M
10 M
3.1
Set calibrator 2 wire Comp ON.
1
Set calibrator 2 wire Comp OFF.
2
Table 3d. Model 73 Dc Current
Performance Check
Test instrument
Test instrument indication
range setting
Calibrator
output setting
Min
Max
10 A
5A
4.88
5.12
Table 4. Model 73 Series III Specifications
Performance specifications
Test instrument parameters
(% of reading + counts)
Dc voltage
Range:
Accuracy:
(0.3% + 1)
320 mV to 320 V
(0.4% + 1)
600 V
Ac voltage
Range:
Accuracy:
(2.0% + 2)
3.2 V, 45 to 500 Hz
(2.0% + 2)
32 to 600 V, 45 Hz to 1 kHz
Dc Current
Range: 32 mA, 320 mA and 10 A
Accuracy: (1.5% + 2)
Ac Current1
Range: 0 to 10 A, 45 Hz to 1 kHz
Accuracy: (2.5% + 2)
Range:
Accuracy:
320 Ω
(0.5% + 2)
3200 Ω to 3.2 MΩ
(0.5% + 1)
32 MΩ
(2.0% + 1)
Ac current verified by dc current checks because both use the same shunt resistors.
1
Table 4a. Model 73 Series III Dc Voltage
Performance Checks
Test
Test instrument indications
instrument
Calibrator
range settings
output settings
Min
Max
320 mV
300 mV
299
301
3.2 V1
3V
2.99
3.01
32 V
30 V
29.9
30.1
320 V
300 V
299
301
600 V
500 V
497
503
Set function switch to V dc.
1
6
