The MICSIG SigOFIT Gen 3 (MOIP series) is an optical-fiber isolated probe from 200 MHz to 1.2 GHz with an 85 kVpk common-mode voltage range, CMRR of 180 dB at DC and 106 dB at 1.2 GHz, 1% DC gain accuracy and noise as low as 0.3 mVrms. A laser carries both the signal and the power over fiber, so the probe head needs no battery and can run 24/7. It is built for measuring fast high-side signals on GaN, SiC and IGBT power stages. Pertech, the exclusive MICSIG distributor in Israel, quotes in ILS with local invoicing, handles warranty in Israel and arranges calibration and repair.
SigOFIT Gen 3 highlights
- Bandwidth 200MHz to 1.2GHz, rise time down to <=350ps
- Common mode voltage range 85kVpk
- CMRR 180dB at DC, 128dB at 100MHz, 106dB at 1.2GHz
- DC gain accuracy 1%, noise as low as 0.3mVrms
- Differential range from +/-10 V to +/-5000 V with interchangeable attenuator tips
- Laser transmits signal and power over fiber, no batteries, 24/7 continuous testing
- Real-time optical power compensation, no manual calibration during testing
- Input capacitance as low as 1pF, short coaxial leads for GaN testing
- AutoZero in less than 1 second; universal BNC for all oscilloscope brands
Models
| Model | Bandwidth | Rise time | Cmrr at bw | Noise |
|---|---|---|---|---|
| MOIP1200P | 1.2GHz | <=350ps | 106dB @ 1.2GHz | 0.45mVrms |
| MOIP1000P | 1GHz | <=450ps | 108dB @ 1GHz | 0.45mVrms |
| MOIP500P | 500MHz | <=800ps | 114dB @ 500MHz | 0.3mVrms |
| MOIP350P | 350MHz | <=1ns | 118dB @ 350MHz | 0.3mVrms |
| MOIP200P | 200MHz | <=1.5ns | 122dB @ 200MHz | 0.3mVrms |
Where the SigOFIT Gen 3 fits
- Motor drive, power converter and electronic ballast design
- GaN, SiC, IGBT half/full bridge design
- Inverter, UPS and switching power supply design
- High voltage, high bandwidth safety test
- Power device evaluation
- Current shunt measurements
- EMI and ESD troubleshooting
- Floating measurements
Key Specifications
| Spec | Value |
|---|---|
| Bandwidth | 200MHz / 350MHz / 500MHz / 1GHz / 1.2GHz |
| Rise time | <=1.5ns to <=350ps |
| CMRR | DC: 180dB; 122dB @ 200MHz to 106dB @ 1.2GHz |
| Differential voltage range | +/-10 V (OP20) to +/-5000 V (OP10000), by tip |
| Attenuator tips | OP20, OP50, OP100 (MMCX); OP200, OP500, OP1000, OP2000, OP5000 (MCX); OP10000 (LCX) |
| Noise | 0.3mVrms (200-500MHz) / 0.45mVrms (1GHz, 1.2GHz) |
| DC gain accuracy | 1% |
| Common mode voltage range | 85kVpk |
| Input capacitance | As low as 1pF |
| Interface | Universal BNC, compatible with all oscilloscope brands |
Standard and optional tips: Standard tips: OP50 (+/-25V) and OP5000 (+/-2500V) on MOIP1200P/1000P/500P/350P; on MOIP200P only OP50 is standard and OP5000 is optional. All other tips (OP20, OP100, OP200, OP500, OP1000, OP2000, OP10000) are optional.
SigOFIT Gen 3 vs Tektronix IsoVu and Keysight PS0008A
On the makers’ own published figures, SigOFIT Gen 3 offers more bandwidth, a higher common-mode range, stronger common-mode rejection at high frequency and twice the differential range of the Tektronix IsoVu and Keysight PS0008A optically isolated probes.
And it costs a fraction of the price of those probes. Ask Pertech, the exclusive MICSIG distributor in Israel, for a quote in ILS.
| Specification | MICSIG SigOFIT Gen 3 | Tektronix IsoVu Gen 2 (TIVP) | Keysight PS0008A |
|---|---|---|---|
| Maximum bandwidth | 1.2 GHz | 1 GHz | 1 GHz |
| Common-mode voltage range | 85 kVpk | +/-60 kV | +/-60 kV |
| CMRR at DC | 180 dB | 160 dB | over 180 dB |
| CMRR at 100 MHz | 128 dB | 100 dB | 65 dB |
| CMRR at 1 GHz | 108 dB (1 GHz model) | not published | 54 dB |
| Maximum differential range | +/-5000 V | +/-2500 V | +/-2500 V |
Figures as published by each manufacturer, read on 07/11/2026: micsig.com (SigOFIT Gen 3, MOIP series), tek.com (IsoVu isolated voltage probes, TIVP series), and the Keysight PS00xxA data sheet (CMRR with the PS0017A tip, Keysight’s highest-CMRR tip). Test conditions and tips differ between makers; check each data sheet for your measurement.
MICSIG SigOFIT Gen 3 in Israel
Buy the SigOFIT Gen 3 from Pertech, the exclusive MICSIG distributor in Israel: quotes in ILS and local invoicing, warranty handled in Israel, calibration and repair arranged through Pertech, some models in stock in Israel, and technical support from Pertech engineers.
Frequently asked questions
How does SigOFIT compare with Tektronix IsoVu and Keysight isolated probes?
On the makers’ published figures, SigOFIT Gen 3 reaches 1.2 GHz (IsoVu and Keysight PS0008A: 1 GHz), handles 85 kVpk common mode (both others: +/-60 kV), keeps 128 dB CMRR at 100 MHz (IsoVu: 100 dB; PS0008A: 65 dB with its best tip) and measures up to +/-5000 V differential (both others: +/-2500 V).
Is SigOFIT less expensive than Tektronix IsoVu or Keysight?
Yes. SigOFIT costs a fraction of the price of the Tektronix IsoVu and Keysight PS0008A isolated probes, while offering higher published specifications. Pertech, the exclusive MICSIG distributor in Israel, quotes in ILS.
What is the MICSIG SigOFIT Gen 3?
The MICSIG SigOFIT Gen 3 (MOIP series) is an optical-fiber isolated probe from 200 MHz to 1.2 GHz with an 85 kVpk common-mode voltage range, CMRR of 180 dB at DC and 106 dB at 1.2 GHz, 1% DC gain accuracy and noise as low as 0.3 mVrms. A laser carries both the signal and the power over fiber, so the probe head needs no battery and can run 24/7. It is built for measuring fast high-side signals on GaN, SiC and IGBT power stages.
Where can I buy the MICSIG SigOFIT Gen 3 in Israel?
From Pertech, the exclusive MICSIG distributor in Israel. Contact Pertech for a quote in ILS, availability and help choosing the model.
Who handles warranty and calibration in Israel?
Pertech handles MICSIG warranty in Israel: you return the unit to Pertech and Pertech deals with MICSIG. Pertech also arranges calibration and repair.
Does the SigOFIT Gen 3 work with any oscilloscope?
MICSIG specifies a standard BNC output for the SigOFIT Gen 3, compatible with oscilloscopes from other brands as well as MICSIG’s own.
Can Pertech help me set it up?
Yes. Pertech engineers help with setup and application questions for MICSIG instruments bought through Pertech.
Related MICSIG products at Pertech
- MICSIG DP high-voltage differential probe
- MICSIG MHO6 12-bit oscilloscope
- MICSIG SigOFIT Gen 2
- MICSIG products at Pertech
Need a quote for the MICSIG SigOFIT Gen 3? Contact Pertech.
