
9
IM 720120-51E
3 High-Speed High-Resolution 1 MS/s, 16-Bit
Isolation Module (701251) Specifications
Item Specifications
Standard operating conditions Temperature: 23 ±5°C
Humidity: 20 to 80% RH
After a 30-minute warm-up and after calibration
Number of input channels 2
Input coupling AC, DC, and GND
Maximum sample rate 1 MS/s
Input format Isolated unbalanced
Frequency characteristics1
(−3dBpointwhenasinewaveof
amplitude 60 % of range is input)
50 mV range to 200 V range: DC to 300 kHz
20 mV range and 10mV range: DC to 200 kHz
Voltage-axis range setting 1 mV range to 20 V range (1-2-5 steps) (when using 1:1 probe attenuation)
Maximum input voltage
(at a frequency of 1 kHz or less)
Combined with the 700929 (10:1), 702902 (10:1), or 701947 (100:1):2
600 V (DC+ACpeak)
Combined with the 701901+701954 (1:1):4
140 V (DC+ACpeak)
Direct input (cable that does not comply with the safety standards):6
42 V (DC+ACpeak)
Maximum rated voltage to earth
Between input and case
Between each input(at a
frequency of 1 kHz or less)
Working voltage of safety standard
In combination with 700929 (10:1)/702902 (10:1)/701947 (100:1),3or in combination with
701901+701954 (1:1):5
400 Vrms (measurement category Other (O)), 300 Vrms (CAT II)
Direct input (cable that does not comply with the safety standards):7
42 V (DC+ACpeak) (CAT II, 30 Vrms)
Vertical (voltage) axis accuracy
DC accuracy1
50 mV range to 200 V range: ±(0.25% of range)
20 mV range: ±(0.3% of range)
10 mV range: ±(0.5% of range)
Input connector BNC connector (isolated type)
Input impedance 1MΩ±1%,approx.35pF
−3dBpointwhenACcoupled
low frequency attenuation point
1 Hz or less (0.1 Hz or less when using the 700929 or 702902, 0.01 Hz or less when using
the 701947)
Common mode rejection ratio 80 dB (50/60 Hz) or more (typical value8)
Residual noise level
(Input section shorted)
±100 µV or ±0.1% of range whichever is greater (typical value8)
Withstand voltage 2300 Vrms for 2 seconds (across each terminal and earth) (60 Hz)
Insulation resistance 500VDC,10MΩormore(acrosseachinputterminalandearth)
A/D conversion resolution 16 bit (24000 LSB/range)
Temperature coefficient Zero point: 50 mV range to 200 V range: ±(0.02% of range)/°C (typical value8)
20 mV range: ±(0.05% of range)/°C (typical value8)
10 mV range: ±(0.10% of range)/°C (typical value8)
Gain: 10 mV range to 200 V range: ±(0.02% of range)/°C (typical value8)
Bandwidth limit Select from Full, 40 kHz, 4 kHz, and 400 Hz
Cut-off characteristics: −12dB/OCT(typicalvalue8)
Probe attenuation setting Voltage probe: 1:1, 10:1, 100:1, 1000:1
Current probe: 1 A:1 V, 10 A:1 V (for the 701932/701933), 100 A: 1 V (for the 701930/701931)
Clamp-on probe: 1 A:10 mV (for the 720930), 1 A: 2.5 mV (for the 720931)