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SigOFIT Gen 2 Optical-fiber Isolated Probe Optical-fiber Isolated Probe

Bandwidth: 200MHz-1GHz
Common Mode Voltage: 85kVpk
DC Accuracy: 1%
CMRR: up to 180dB
Interface: BNC

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Built on the exclusive SigOFIT™ leading technology, Micsig MOIP Series Optically Isolated Probes boast an extremely CMRR—still as high as 108dB at the 1GHz frequency bandalong with an isolation voltage of up to 85kV and a noise floor of less than 0.45mVrms. its bandwidth ranges from 200MHz to 1GHz, capable of measuring differential mode signals from ±0.01V to ±6250V. It reveals the complete truth of signals within its bandwidth range, serving as the ultimate judge for verifying the authenticity of signals measured by other voltage probes.

The MOIP Series adopts advanced laser power supply technology, utilizing laser for both signal transmission and power delivery (no batteries required, ensuring purer power supply). It supports 24*365 uninterrupted testing and features a standard BNC interface, compatible with oscilloscopes of all brands.

Present True Signal

Present True Signal


SigOFIT probe has highest common mode rejection ratio, or CMRR, up to 128dB at 100MHz, over 100dB at 1GHz. It's the ultimate referee of signal fidelity measured by other voltage probes.

Highest Accuracy

Highest Accuracy


As the ultimate referee of signal fidelity, SigOFIT optical-fiber isolated probe delivers highest test accuracy. It has excellent amplitude-frequency characteristics, DC gain accuracy ≤1%, while noise ≤ 0.45mVrms. Zero drift<0.1% (works 5 mins later), gain drift also <1%.

Best Probe for Third-Gen Semiconductor

Best Probe for Third-Gen Semiconductor


SiC & GaN device can switch high voltages in a few nanoseconds, the signal may have high-energy high-frequency harmonics.

Even at the highest bandwidth, the SigOFIT probe still have nearly 100dB CMRR, perfectly suppressed the oscillation caused by high-frequency common-mode noise, no redundant components. It's the best choice for 3rd-gen semiconductor test & measurement.

Safe to Test GaN

Safe to Test GaN


The test leads of SigOFIT probe are short and with coaxial cable transmission, the input capacitance is as low as 1pF minimum, very safe to test GaN.

Real Optical Isolation Technology

Real Optical Isolation Technology


Lasers transmit signals + Power over fiber (no batteries needed, the power supply is more pure), realizes continuous test for 365 days.

Wide Measurement Range

Wide Measurement Range


Unlike traditional differential probes can only test high-voltage signals, SigOFIT probe can be used with different attenuator tips to test differential mode signals from ±0.01V to ±6250V, achieve full-range output and very high signal-to-noise ratio.

Efficient & Affordable

Efficient & Affordable


Fastest response, can be tested immediately after power-on; AutoZero completed in less than 1 second, ensures accurate signal output in real time.

Applications

Applications


* Design of motor drive, power converter, electronic ballast
* Design of GaN, SiC, IGBT Half/Full bridge devices
* Design of inverter, UPS and switching power supply
* Safety test for high voltage, high bandwidth applications
* Power device evaluation
* Current shunt measurements
* EMI & ESD troubleshooting
* Floating measurements

Model

MOIP200P 

MOIP350P 

MOIP500P

MOIP1000P 

Bandwidth

200MHz

350MHz

500MHz

1GHz

Rise Time

≤ 1.75ns

≤ 1ns

≤ 700ps

≤ 450ps

CMRR

DC: 180dB
200MHz: 122dB

DC: 180dB
350MHz: 118dB

DC: 180dB
500MHz: 114dB

DC: 180dB
1GHz: 108dB

Differential Voltage Range

Standard OP20(MMCX), ±25V
Optional OP50(MMCX), ±62.5V
Optional OP200(MCX), ±250V
Optional OP1000(MCX), ±1250V
Optional OP2000(MCX), ±2500V
Optional OP5000(LCX), ±6250V

Standard OP20(MMCX), ±25V
Optional OP50(MMCX), ±62.5V
Optional OP200(MCX), ±250V
Standard OP1000(MCX), ±1250V
Optional OP2000(MCX), ±2500V
Optional OP5000(LCX), ±6250V 

Optional OP20(MMCX), ±10V
Standard OP50(MMCX), ±25V
Optional OP100(MMCX), ±50V

Optional OP2000(MCX), ±1000V

Standard OP5000(MCX), ±2500V
Optional OP10000(LCX), ±5000V

Noise

< 0.45mVrms

DC Gain Accuracy

1%

Common Mode Voltage Range

85kVpk

Interface

Universal  BNC


User Manual - SigOFIT Gen2 optical-fiber isolated probe

User Manual - SigOFIT Gen2 optical-fiber isolated probe

File size: 1.04 MB

Update time: 2026-08-04

Brochure SigOFIT Gen2 optical-fiber isolated probe

Brochure SigOFIT Gen2 optical-fiber isolated probe

File size: 1.01 MB

Update time: 2026-08-04

Quick Guide -SigOFITGen 2 optical-fiber isolated probe

Quick Guide -SigOFITGen 2 optical-fiber isolated probe

File size: 663.09 KB

Update time: 2026-08-04

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