720211 High-Speed Isolation Module
The Yokogawa 720211 is a 2-channel high-speed isolation module capable of 20 MHz bandwidth, 12-bit resolution, and ±0.5% accuracy.
With a remarkable 100 MS/s sampling rate along with the ability to deliver 1 kV isolated measurements (powered by Yokogawa's IsoPRO™ technology), it combines accuracy, reliability, and safety in one compact design.
Key Features
- High-Speed Precision: 100 MS/s sampling with 12-bit resolution delivers accurate waveform capture for high-frequency, high-voltage applications
- Optically Isolated Channels: Each input channel is optically isolated, providing robust protection against ground loops and common-mode interference while maintaining accurate differential measurements even in high-voltage systems.
Using high-speed optical fiber-based transmission, IsoPROTM technology enables 1kV isolated measurements*. The module achieves high-speed ADC clock and data isolation.
- Consistent Signal Integrity: Maintains low noise and high accuracy across a wide measurement bandwidth
- Seamless System Integration: Fully compatible with Yokogawa’s ScopeCorder (DL950) and High-Speed DAQ (SL2000) platforms, the 720211 extends system capability without adding setup complexity
- Optimized For Power Electronics: Ideal for inverter, IGBT, and motor-drive testing where fast switching and high currents demand robust isolation
| Item | Specifications |
|---|---|
| Standard operating conditions | Temperature: 23 ±5 °C Humidity: 20 to 80 % RH After a 30 minute warm-up and after calibration |
| Effective measurement range | 20 div (display range: 10 div) |
| Number of input channels | 2 |
| Input coupling settings | AC, DC, GND |
| Maximum sample rate | 100 MS/s |
| Input type | Isolated unbalanced |
| Frequency characteristics1 (−3 dB point when a sine wave of amplitude ±3 div is applied) | DC to 20 MHz |
| Voltage scale setting | 10 mV/div to 20 V/div (1-2-5 steps) (when using 1:1 probe factor) |
| 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 | 1000 V (DC+ACpeak) |
| Combined with the 701901 + 701954 (1:1)4 | 200 V (DC+ACpeak) |
| Direct input (cable that does not comply with the safety standards)6 | 42 V (DC+ACpeak) |
| Maximum rated voltage to ground – between input and case and between inputs (at a frequency of 1 kHz or less) | |
| Safety standard’s working voltage | |
| Combined with 700929 (10:1), 701947 (100:1)3 or combined with 701901 + 701954 (1:1)5 | 1000 Vrms (CAT II) |
| Combined with the 702902 (10:1)3 | 1000 V (DC+ACpeak) 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 | ±(0.5 % of 10 div) |
| Input connector | BNC connector (isolated type) |
| Input impedance | 1 MΩ ±1 %, approx. 35 pF |
| −3 dB point when AC coupled | 10 Hz or less (1 Hz or less when using the 700929 or 702902, 0.1 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) | ±1.1 mV or ±0.15 div whichever is greater (typical value8) |
| Withstand voltage | 5400 Vrms for 2 seconds (across each input terminal and earth) (60 Hz) |
| Insulation resistance | 500 VDC, 10 MΩ or more (across each input terminal and earth) |
| A/D converter resolution | 12 bits (150 LSB/div) |
| Temperature coefficient | Zero point: ±(0.1 % of 10 div)/°C (typical value8) Gain: ±0.05%/°C (typical value8) |
| Bandwidth limit | Select from Full and 2 MHz Cutoff characteristics: –12 dB/OCT (typical value8) Digital filter Cutoff frequency: 1.28 MHz, 640 kHz, 320 kHz, 160 kHz, 80 kHz, 40 kHz, 20 kHz, 10 kHz Filter type: IIR |
| Probe attenuation settings | Voltage probe: 1:1, 2:1, 5:1, 10:1, 20:1, 50:1, 100:1, 200:1, 500:1, 1000:1, 2000:1, 5000:1, 10 k:1, 20 k:1, 50 k:1 Current probe: 0.1 A:1 V, 0.2 A:1 V, 0.5 A:1 V, 1 A:1 V, 2 A:1 V, 5 A:1 V, 10 A:1 V, 20 A:1 V, 50 A:1 V, 100 A:1 V, 200 A:1 V, 250 A:1 V, 400 A:1 V, 500 A:1 V, 1 kA:1 V, 2 kA:1 V, 5 kA:1 V, 10 kA:1 V, 20 kA:1 V, 50 kA:1 V |
| Wiring / measurement points |
|
1. Value measured under standard operating conditions.
8. Typical values represent typical or average values. They are not strictly warranted.
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