TB 9-6625-2243-24
Table 3. Model 73 Specifications
Test instrument parameters
Performance specifications
(% of reading + counts)
Dc voltage
Range:
Accuracy:
(0.7% + 1)
320 mV to 320 V
(0.8% + 1)
1000 V
Ac voltage
Range:
Accuracy:
(3.0% + 2)
3.2 V, 45 to 500 Hz
(3.0% + 2)
32 to 750 V, 45 Hz to 1 kHz
Dc Current
Range: 0 to 10 A
Accuracy: (2.0% + 2)
1
Ac Current
Range: 0 to 10 A, 45 Hz to 1 kHz
Accuracy: (3.0% + 2)
Range:
Accuracy:
(1.0% + 2)
320
(1.0% + 1)
3200 to 3.2 M
(3.0% + 1)
32 M
1
Ac current verified by dc current checks because both use the same shunt resistors.
Table 3a. Model 73 Dc Voltage
Performance Checks
Test
Test instrument indications
instrument
Calibrator
range settings
output settings
Min
Max
320 mV
300 mV
297.8
302.2
3.2 V1
3V
2.978
3.022
32 V
30 V
29.78
30.22
320 V
300 V
297.8
302.2
1000 V
900 V
892
908
1
Set function switch to V dc.
Table 3b. Model 73 Ac Voltage
Performance Checks
Calibrator output
settings
Test instrument indications
Test
instrument
Voltage
range settings
(V)
(Hz)
Min
Max
3.2 V
3
45
2.908
3.092
3.2 V
3
500
2.908
3.092
32
V
30
45
29.08
30.92
32
V
30
1000
29.08
30.92
320
V
300
1000
290.8
309.2
320
V
300
45
290.8
309.2
750
V
700
45
677
723
750
V
700
1000
677
723
5
