TB 9-6625-2135-35
Table 1. Calibration Description - Continued
Performance specifications
Accuracy: (% of reading + digits)
Test instrument parameters
4 1/2 digits (1999.9 maximum display)
Ac voltage
Range: 0 to 1200 V (in 5 ranges)
Frequency:
Accuracy:
20 to 30 Hz
2.0 + 50
30 to 50 Hz
1.0 + 30
50 Hz to 10 kHz
0.3 + 20
10 to 20 kHz
1.0 + 40
20 to 100 kHz
2.0 + 150
Ac Current2
Range: 0 to 2000 mA (in 5 ranges)
Range:
Accuracy:
200 A to 200 mA
20 to 30 Hz
2.0 + 50
30 Hz to 10 kHz 0.9 + 35
2000 mA
20 to 30 Hz
2.0 + 50
30 Hz to 10 kHz 1.2 + 20
Dc current
Range: 0 to 2000 mA (in 5 ranges)
Range:
Accuracy:
200 A to 20 mA
0.07 + 2
200 mA
0.15 + 2
2000 mA
0.5 + 2
Range: 0 to 20 M Ω (in 7 ranges)
Range:
Accuracy:
20 and 200Ω
0.08 + 2
2 through 200 kΩ
0.03 + 1
2000 kΩ
0.04 + 1
20 M Ω
0.15 + 1
1Maximum
input: FS to 10 kHz decreasing linearly to 50 percent of FS at 20 kHz.
2Ac current verified during dc current check since same shunt resistors are utilized for both checks.
3Volts/hertz product not to exceed 107.
EQUIPMENT REQUIREMENTS
4. Equipment
Required. Table 2 identifies the
specific equipment to be
used in this
calibration procedure. This equipment is issued with Secondary Transfer Calibration
Standards Set AN/GSM-286. Alternate items may be used by the calibrating activity.
The items selected must be vested to perform satisfactorily prior to use and must bear
evidence of current calibration. The equipment must meet or exceed the minimum use
5