3
Four-Wire Resistance
Accuracy Conditions: Auto zero on, one hour warmup. Temperature within ±5°C of calibration temperature (module calibrated at 18-28°C).
RESOLUTION vs APERTURE 90-DAY ACCURACY vs APERTURE
Source Maximum Open (Ω) ± (% of Reading + Ω)
Range Current Circuit Voltage 20/16.7 ms 10 µs 20/16.7 ms 10 µs
256 Ω 488 µA 11.5 V 250 µΩ 15 mΩ 0.035% + 10 mΩ 0.12% + 50 mΩ
2 kΩ 488 µA 11.5 V 2 mΩ 125 mΩ 0.025% + 20 mΩ 0.1% + 200 mΩ
16 kΩ 61 µA 11.5 V 15 mΩ 1 Ω 0.025% + 200 mΩ 0.1% + 2 Ω
131 kΩ 61 µA 11.5 V 125 mΩ 8 Ω 0.025% + 1 Ω 0.1% + 16 Ω
1 MΩ 7.6 µA 11.5 V 1 Ω 64 Ω 0.015% + 10 Ω 0.1% + 120 Ω
NOTE: With offset compensation on, accuracy is the same as for the voltmeter alone.
True RMS ac Voltage (ac coupled)
Crest Factor: 7 at 0% full scale; 5 at full scale. Accuracy Conditions: Sine wave inputs >0% of full scale. dc component <0% of ac component.
Auto-zero on, one hour warmup. Temperature within ± 5°C of calibration temperature (module calibrated at 8-28°C).
RESOLUTION vs APERTURE 90-DAY ACCURACY vs APERTURE
Range Input (Volts) ± (% of Reading + Volts)
(RMS) Impedance Frequency 320/267 ms 10 µs 320/267 ms All other apertures
87.5 mV >100 MΩ, 20-50 Hz 30 nV 7.6 µV 2.175% +200 µV 2.175% +1 mV
<100 pF 50 Hz-1 kHz 0.675% +200 µV 0.675% +200 µV
5-10 kHz 3.175% +200 µV 3.175% +200 µV
700 mV >100 MΩ, 20-50 Hz 0.24 µV 61 µV 2.125% +1.5 mV 2.125% +8 mV
<100 pF 50 Hz-1 kHz 0.625% +1.5 mV 0.625% +1.5 mV
1-5 kHz 0.625% +1.5 mV 0.625% +1.5 mV
5-10 kHz 3.125% +1.5 mV 3.125% +1.5 mV
5.6 V >100 MΩ, 20-50 Hz 2.0 µV 488 µV 2.125% +15 mV 2.125% +80 mV
<100 pF 50 Hz-1 kHz 0.625% +15 mV 0.625% +15 mV
1-5 kHz 1.125% +15 mV 1.125% +15 mV
5-10 kHz 10.125% +15 mV 10.125% +15 mV
44.8 V 10 MΩ± 5%, 20-50 Hz 15 µV 3.9 mV 2.125% +100 mV 2.125% + 500 mV
<100 pF 50 Hz-1 kHz 0.625% +100 mV 0.625% +100 mV
1-5 kHz 1.125% +100 mV 1.125% +100 mV
5-10 kHz 10.125% +100 mV 10.125% +100 mV
300 V 10 MΩ ± 5%, 20-50 Hz 122 µV 31 mV 2.125% + 500 mV 2.125% + 2.5 V
<100 pF 50 Hz-1 kHz 0.625% + 500 mV 0.625% + 500 mV
1-5 kHz 1.125% + 500 mV 1.125% + 500 mV
5-10 kHz 10.125% + 500 mV 10.125% + 500 mV
Timing/Synchronization
Timer/pacer
Timer range: 76 µs to 65.5 ms
Resolution: 2 µs
Programmable delay
Delay range: 40 µs to 16 s
Resolution: 2 µs
External trigger
Minimum pulse width: 100 ns
Maximum trigger rate: 5 kHz (Trigger Condition, negative
edge; Fixed range,10 µs aperture)
Isolation 450 Vpk between any terminal
and chassis.
dc Voltage Accuracy with Relay Multiplexers
Range 20/16.7 ms 10 µs 20/16.7 ms 10 µs
125 mV 0.023%+9 µV 0.115%+64 µV 0.023%+55 µV 0.115%+110 µV
1 V 0.013%+19 µV 0.1%+204 µV 0.013%+65 µV 0.1%+250 µV
8 V 0.01%+54 µV 0.1%+1.5 mV 0.01%+100 µV 0.1%+1.55 mV
64 V 0.015%+1 mV 0.1%+20 mV 0.015%+1.05 mV 0.1%+20 mV
300 V 0.015%+5 mV 0.1%+80 mV 0.015%+5.05 mV 0.1%+80 mV
Accuracy Conditions: Auto zero on, one hour warmup.
Temperature within ±5°C of calibration temperature
(module calibrated at 8-28°C).