TB 9-6625-199-24
APPENDIX B
PERFORMANCE TABLES
Amprobe Instruments, Model 38XR-A
Table B-95. Calibration Description.
Test instrument parameters
Performance specifications
DC VOLTAGE
Range: 0 to 1000 V dc
Accuracy: (0.25% rdg + 5 dgts)
AC VOLTAGE
Range: 0 to 750 V ac, 45 Hz to 2 kHz
Accuracy: (1.2% + 10 dgts), 1000 mV to 100 V ac rngs, 45 Hz to 500 Hz;
(2.0% + 10 dgts), 1000 mV to 100 V rngs, 500 Hz to 2 kHz;
(2.0% + 10 dgts), 750 V rng, 45 Hz to 1 kHz
PEAK HOLD
Accuracy: 100 V and 750 V ac rngs, (3% rdg + 200 dgts);
1000 mV ac and 10 V ac rngs, unspecified
AC + DC VOLTAGE
Range: 0 to 750 V ac, 45 Hz to 2 kHz
Accuracy: (1.5% + 10 dgts), 1000 mV to 100 V ac rngs, 45 Hz to 500 Hz;
(2.5% + 10 dgts), 1000 mV to 100 V rngs, 500 Hz to 2 kHz;
(2.5% + 10 dgts), 750 V rng, 45 Hz to 1 kHz
dBm
Range: -13 dBm to 50 dBm
Accuracy: (0.7 dB + 8 dgts), 45 Hz to 5 kHz; (2.5 dB + 8 dgts), 5 kHz to 10 kHz
DC CURRENT
Range: 0 to 10 A dc
Accuracy: (0.5% rdg + 10 dgts), 100 μA dc range;
(0.5% rdg + 5 dgts), 1000 μA dc to 400 mA dc ranges;
(1.5% rdg + 10 dgts), 10 A dc range
Range: 0 to 100 % (4 to 20 mA)
Accuracy: 0.5 % + 5 dgts
AC CURRENT
Range: 0 to 10 A ac, 45 Hz to 1 kHz
Accuracy: (1.5% rdg + 20 dgts), 100 μA ac through 100 mA ac ranges;
(2.0% rdg + 10 dgts), 400 mA ac range
(2.5% rdg + 20 dgts), 10 A ac range
Accuracy: (3% rdg + 200 dgts); 100 μA ac range not specified
PEAK HOLD
AC + DC CURRENT
Range: 0 to 10 A ac, 45 Hz to 1 kHz
Accuracy: (2.0% rdg + 20 dgts), 100 μA ac through 400 mA ac ranges;
(3% rdg + 20 dgts), 10 A ac range
Range: 0 to 40 MΩ
Accuracy: (0.5% rdg + 8 dgts), 1000 Ω to 1000 kΩ ranges;
(1.0% rdg + 10 dgts), 10 MΩ range;
(2.0% rdg + 10 dgts), 40 MΩ range
Range: 0 to 400 μF
Accuracy: (3.0% rdg + 10 dgts), 40 nF and 400 μF ranges;
(3.0% rdg + 5 dgts), 400 nF to 40 μF ranges
Range: 0 to 10 MHz
Accuracy: (0.1% rdg + 5 dgts)
Sensitivity: 3 Hz to 1 MHz, >1.5 V rms; 1 MHz to 10 MHz, >1.5 V rms <5 V rms
TEMPERATURE1
Range: -20 C to 1300 C; -4 F to 2372 F
Accuracy: (2.0% rdg + 4 C), -20 C to 10 C; (1.0% rdg + 3 C), 10 C to 200 C;
(2.0% rdg + 2 C), 200 C to 1300 C; (2.0% rdg + 8 F), -4 F to
50 F; (1.0% rdg + 6 F), 50 F to 400 F; (2.0% rdg + 4 F), 400 F
to 2372 F
Only checked to 500 C/900 F due to standards limitations.
1
B-39
