MICSIG SigOFIT MOIP Series: Isolated Probes for Power & EMI Testing

What is the Micsig SigOFIT MOIP Series and its purpose?

Micsig SigOFIT MOIP Series
Offers bandwidths from 100 MHz to 1 GHz with common-mode rejection ratios up to 180 dB. Differential voltage ranges from ±25V to ±6250V, depending on the attenuation tip. Ideal for power device evaluation, EMI troubleshooting, and high-voltage applications. 

An optical-fiber isolated probe is a specialized sensor that uses optical fiber technology to provide electrical isolation between the probe and the measurement system. Here’s a breakdown of its use and purpose:

 

🔌 Main Purpose: Electrical Isolation

  • The probe isolates the measurement system (like an oscilloscope or data acquisition system) from the high-voltage or noisy environment where the measurement is being taken.
  • This protects sensitive equipment and users from potentially dangerous voltages or electrical surges.

 

📡 How It Works

  • The probe converts electrical signals into optical signals, transmits them via optical fiber, and then converts them back to electrical signals at the receiving end.
  • Since light signals aren’t affected by electromagnetic interference or ground loops, this ensures a clean, interference-free measurement.

🛠️ Common Applications

  1. High-Voltage Environments
    • Power electronics testing (e.g., IGBTs, inverters, motor drives)
    • HVDC transmission systems
  2. Medical Equipment
    • Patient monitoring systems where patient safety requires isolation
  3. Industrial Automation
    • Measuring signals in systems with multiple ground potentials
  4. RF and EMC Testing
    • Reduces interference and ground loop issues during sensitive signal measurements

 

 

 

Bandwidth:100MHz-1GHz

Common Mode Voltage:85kVpk

DC Accuracy:1%

CMRR:up to 180dB

Interface: BNC

Features

  • Present True Signal
  • Highest Accuracy
  • Best Probe for Third-Gen Semiconductor
  • Safe to Test GaN
  • Real Optical Isolation Technology
  • Wide Measurement Range
  • Efficient & Affordable

 

  • 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

 

What are the key specifications of the Micsig SigOFIT MOIP Series?

Model* MOIP100P MOIP200P MOIP350P MOIP500P MOIP800P MOIP1000P
Bandwidth 100MHz 200MHz 350MHz 500MHz 800MHz 1GHz
Rise Time ≤3.5ns ≤1.75ns ≤1ns ≤700ps ≤438ps ≤350ps
CMRR DC: 180dB
100MHz: 128dB
DC: 180dB
200MHz: 122dB
DC: 180dB
350MHz: 118dB
DC: 180dB
500MHz: 114dB
DC: 180dB
800MHz: 110dB
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
Standard OP2000(MCX), ±1000V
Optional OP5000(MCX), ±2500V
Optional OP10000(LCX), ±5000V
Noise <0.45mVrms
DC Gain Accuracy 1%
Common Mode Voltage Range 85kVpk
Interface Universal  BNC

* Note: Current model names updated on March 20, 2024, previous model names referred as MOIP01P, and OIP100 (e.g. 100MHz bandwidth).

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