# Title: Micsig SigOFIT Optical-Fibre Isolated Probe - High Bandwidth Galvanic Isolation for Power Electronics
## Description: -
## Product type: Oscilloscope Accessory
## Vendor: Micsig
## Tags: AC, AC/DC, Accessory, Differential Probe, Fibre Optic, micsig, Oscilloscope, Oscilloscope Probe, SigOFIT, spec-oscilloscope-probe, Test Probe
## Price range: 2425.0 - 11580.0 GBP
## Link: https://thedebugstore.com/products/micsig-sigofit-optical-fibre-isolated-probe-moip-series
## Options
- Bandwidth: 100MHz, 200MHz, 350MHz, 500MHz, 800MHz, 1GHz
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## Variants
- 100MHz, SKU: MOIP100P, Available: yes, Inventory: 0
- 200MHz, SKU: MOIP200P, Available: yes, Inventory: 0
- 350MHz, SKU: MOIP350P, Available: yes, Inventory: 0
- 500MHz, SKU: MOIP500P, Available: yes, Inventory: 0
- 800MHz, SKU: MOIP800P, Available: yes, Inventory: 0
- 1GHz, SKU: MOIP1000P, Available: yes, Inventory: 0
## Metafields
- warranty: 12 months
- badge: No reviews
- widget:
- brands: gid://shopify/Metaobject/56255971551
- title_tag: Micsig SigOFIT MOIP Optical-Fibre Isolated Probe 100MHz-1GHz 180dB CMRR | Debug Store
- description_tag: Professional Micsig SigOFIT optical-fibre isolated oscilloscope probe with 180dB CMRR, 1GHz bandwidth, ±6250V range. Ideal for testing GaN/SiC power electronics. Buy from Debug Store today.
- manufacturer: Micsig
- backorder_label: If no stock is shown above, order now and we'll ship within 10 working days.
- manufacturer: Micsig
- brand: MicSig
- breadcrumbs: ["gid://shopify/Collection/267180835005","gid://shopify/Collection/240413933757","gid://shopify/Collection/269019119805"]
- warranty: 12 months
- customhs_code: 903090
- key_feature_1: Professional optical-fibre isolated oscilloscope probe with 180dB CMRR for accurate differential measurements in high-voltage switching circuits
- key_feature_2: Ultra-High Common Mode Rejection Ratio
- key_feature_2_tooltip: {"type":"root","children":[{"type":"paragraph","children":[{"type":"text","value":"Delivers industry-leading 180dB CMRR at DC, maintaining over 100dB at 1GHz for superior common-mode interference suppression in high-voltage switching circuits."}]}]}
- key_feature_3: Complete Galvanic Isolation Technology
- key_feature_3_tooltip: {"type":"root","children":[{"type":"paragraph","children":[{"type":"text","value":"Optical-fibre signal transmission provides complete electrical isolation between probe and oscilloscope, eliminating ground loops and enabling safe floating measurements."}]}]}
- key_feature_4: Wide Differential Voltage Range Capability
- key_feature_4_tooltip: {"type":"root","children":[{"type":"paragraph","children":[{"type":"text","value":"Measures differential signals from ±0.01V to ±6250V using interchangeable attenuator tips, providing full-scale output and maximum signal-to-noise ratio."}]}]}
- key_feature_5: Ultra-Fast Auto-Calibration System
- key_feature_5_tooltip: {"type":"root","children":[{"type":"paragraph","children":[{"type":"text","value":"Performs automatic calibration in under one second without disconnecting test leads, ensuring continuous accurate measurements with minimal downtime.","italic":true}]}]}
- key_feature_6: Power-Over-Fibre Operation
- key_feature_6_tooltip: {"type":"root","children":[{"type":"paragraph","children":[{"type":"text","value":"Laser-powered probe head eliminates batteries and electrical connections, enabling continuous 24/7 operation with pure power supply for maximum measurement accuracy."}]}]}
- key_feature_7: Low Parasitic Capacitance Design
- key_feature_7_tooltip: {"type":"root","children":[{"type":"paragraph","children":[{"type":"text","value":"Ultra-short MCX/MMCX test leads with coaxial transmission provide minimal 3pF loading, ensuring safe testing of sensitive GaN and SiC devices."}]}]}
- key_feature_8_tooltip: {"type":"root","children":[{"type":"paragraph","children":[{"type":"text","value":"Standard BNC output interface works with all 50Ω oscilloscopes, providing plug-and-play operation without requiring proprietary scope interfaces or software."}]}]}
- key_feature_8: Universal Oscilloscope Compatibility
- 1563063: What makes the SigOFIT probe better than traditional differential probes for power electronics testing?***SIMP***The SigOFIT probe uses optical isolation technology providing 180dB CMRR compared to typical 80dB from differential probes, eliminating common-mode interference that corrupts measurements in high-voltage switching circuits.
- 1563064: Can the SigOFIT probe safely measure gate signals on high-side GaN and SiC MOSFETs?***SIMP***Yes, the probe's complete galvanic isolation and ultra-short test leads with minimal parasitic capacitance make it ideal for measuring fast-switching wide bandgap semiconductors without affecting circuit operation or causing device damage.
- 1563065: Which SigOFIT model should I choose for my application bandwidth requirements?***SIMP***Select based on your signal frequencies: MOIP100P (100MHz) for basic power supplies, MOIP500P (500MHz) for most SiC applications, or MOIP1000P (1GHz) for high-frequency GaN circuits and advanced power converters.
- 1563066: How does the auto-calibration feature work and how often is calibration required?***SIMP***The probe performs automatic zero calibration in under one second by pressing the calibration button. No disconnection is required and calibration should be performed when changing measurement ranges or after extended operation.
- 1563067: What attenuator tips are available, and how do I select the correct one?***SIMP***Attenuator tips range from 10X to 10000X ratios. Select based on your expected signal amplitude to achieve full-scale deflection on your oscilloscope for maximum measurement resolution and signal-to-noise ratio.
- 1563070: Is the SigOFIT probe compatible with my existing oscilloscope?***SIMP***The probe works with any oscilloscope having standard BNC input connectors and 50Ω input impedance, including models from Tektronix, Keysight, Rohde & Schwarz, LeCroy, and Rigol without requiring special software.
- 1563071: How does optical isolation compare to more expensive competitor solutions like Tektronix IsoVu probes?***SIMP***The SigOFIT offers comparable isolation performance and bandwidth at significantly lower cost, with the advantage of universal oscilloscope compatibility versus proprietary scope requirements of premium alternatives.
- 1563072: What safety considerations apply when using the SigOFIT probe in high-voltage environments?***SIMP***Whilst the probe provides galvanic isolation, proper safety procedures must be followed including appropriate PPE, isolated test fixtures, and adherence to local electrical safety regulations when working with high voltages.
- 1563073: Can the SigOFIT probe measure both AC and DC components simultaneously in power converter circuits?***SIMP***Yes, the probe has DC coupling capability with excellent low-frequency response down to DC, enabling measurement of both switching transients and DC bias levels in power electronic circuits.
- 1563074: What maintenance is required for the optical fibre cable and how robust is it for laboratory use?***SIMP***The fibre cable requires careful handling with minimum bend radius of 8cm. It's designed for laboratory use but should be protected from sharp bends, crushing, or excessive tension to maintain signal integrity.
- why_people_choose_3_title: Future-Proof Technology
- why_people_choose_2_title: Enhanced Safety
- why_people_choose_1_title: Superior Signal Integrity
- why_people_choose_1: Optical isolation eliminates measurement artefacts from common-mode interference that corrupts traditional differential probe readings.
- why_people_choose_3: Designed for emerging wide bandgap semiconductors with bandwidth and CMRR specifications exceeding conventional probe limitations.
- why_people_choose_2: Complete galvanic isolation protects expensive oscilloscopes and operators when measuring high-voltage floating circuits.
- summary: The Micsig SigOFIT optical-fibre isolated probe is a cutting-edge measurement tool for professional electronic engineers. Utilising exclusive SigOFIT™ technology, this probe offers unparalleled signal fidelity and isolation performance. With a bandwidth of DC-1GHz and a common mode voltage of 85kVpk, it unveils the true nature of signals in high-voltage, high-frequency applications.
Boasting an impressive CMRR of up to 180dB, the SigOFIT probe suppresses common-mode noise, making it ideal for testing third-generation semiconductors like SiC and GaN devices. Its low input capacitance of 1pF minimum ensures safe testing of sensitive components. The probe's wide measurement range, from ±0.01V to ±6250V, coupled with its high accuracy (DC gain accuracy ≤1%), makes it versatile for various applications, including motor drive design, power converter testing, and EMI troubleshooting.
Engineered for efficiency, the SigOFIT probe features rapid response times and AutoZero functionality, completing in less than a second. Its optical isolation technology, powered by fibre, enables continuous testing for up to 365 days without battery concerns. This probe is an essential tool for engineers seeking precise, reliable measurements in challenging electronic environments.