Micsig SigOFIT Optical-fiber Isolated Probe: Unveil Real Signal You've Never Seen

Posted by Batter Fly 09-04-2025 0 Comment(s) 2328 Testen en Meten,

With Micsig's exclusive SigOFIT optical isolation technology, the SigOFIT probe delivers 180dB CMRR at DC, 128dB at 100MHz, up to 108dB at 1GHz, able to test differential mode signals from ±0.01V to ±6250V when using with attenuators, present true signal you’ve never seen. It's the most ideal method for isolated probe technology.

Benefits of SigOFIT Probes
The SigOFIT probe is powered over laser, realized complete galvanic isolation between the probe and the DUT.

Up to 1 GHz bandwidth
180dB CMRR at DC
Over 108dB CMRR at 1GHz
85kVpk Common mode voltage range
Up to ±6250V differential input voltage range
1% DC gain accuracy
Auto calibration in 1 second
Support all BNC-type oscilloscopes

Micsig SigOFIT Optical fiber Isolated Probe

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Best Probe GaN SiC
Micsig OP20-2

Best Probe for GaN and SiC
Third-Gen Semiconductor device like SiC and GaN can switch high voltages in a few nanoseconds, containing very high-energy high-frequency harmonics.
SigOFIT probe perfectly suppress oscillation caused by high-frequency common-mode noise by employing high-quality coaxial attenuating tips and industry standard MMCX & MCX connectors, unveils real signal for every engineers.

Present True Signal

Present True Signal

▲ Vgs signal at SiC conduction moment

Key Applications:

Design of motor drive, power converter
Design of GaN, SiC, Half/Full bridge devices
Design of inverter, UPS and switching power supply
High voltage high bandwidth safety test
Power device evaluation
Current shunt measurements
EMI & ESD troubleshooting
Floating measurements

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Amplitude frequency characteristic curve

▲ Amplitude-frequency characteristics of different SigOFIT probes

Attenuating tip CMRR curve

▲ Common mode rejection capabilities of different attenuators (0dB) at various frequencies

Technical Specifications

Model	MOIP100P	MOIP200P	MOIP350P	MOIP500P	MOIP800P	MOIP1000P
Bandwidth	100 MHz	200 MHz	350 MHz	500 MHz	800 MHz	1 GHz
Rise time	≤3.5ns	≤1.75n	≤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
Output Voltage Range	±1.25V	±1.25V	±1.25V	±500mV	±500mV	±500mV
Differential Voltage Range	±6250V			±5000V
Noise	<450μVrms			<450μVrms
Propagation delay	15.42ns (2m fiber length)			16ns (2m fiber length)
Power supply	DC: 12V 3A
DC Gain accuracy	1%
Common mode voltage range	85kVpk
Fiber cable length	2m (Customizable)
Temperature	0°C to 40°C (operating), -20°C to +70°C (non-operating)
Humidity	5% to 85% RH (non-condensing), 75% RH above 30°C, 45% RH above 40°C
Altitude	3000 m (operating), 12000 m (non-operating)
Usage	Indoor Use Only
Package size	371132.5 cm
Package gross weight	2.2KG

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