Micsig MOIP100P SigOFITTM Optical Fiber Isolated Probe User Manual

June 1, 2024
Micsig

Micsig MOIP100P SigOFIT™ Optical Fiber Isolated Probe User Manual

SigOFIT

Optical-Fiber Isolated Probe

USER MANUAL

SigOFIT Optical Fiber Isolated Probe

Version updated: March 20, 2024

Shenzhen Micsig Technology Co. Ltd

Preface

The information provided in this document is provided “as is” and is subject to change without notice in future  editions. Further, to the fullest extent permissible pursuant to applicable law, Micsig disclaims all warranties, express or implied, with respect to this manual and any information contained herein, including, but not limited to,  the implied warranties of merchantability and fitness for a particular purpose. Micsig shall not be liable for errors or  for incidental or consequential damages arising out of the furnishing, use or application of this document or any  information contained herein.

If a separate written agreement has been entered into between Micsig and the User that contains warranty  provisions covering the contents of this document and the warranty provisions conflict with those provisions, the  warranty provisions in the separate agreement shall prevail.

Contact Information

Shenzhen Micsig Technology Co., Ltd.

Tel: +86-(0)755-88600880

Email: [email protected]

Address: 1F, Building A, Huafeng International Robot Industrial Park, Hangcheng Avenue, Baoan District,  Shenzhen, Guangdong, China, 518126

Warranty

Micsig warrants that this product will be free from defects in materials and workmanship for a period of one (1)  year from the date of shipment. If any such product proves defective in materials or workmanship during this warranty period, Micsig, at its option, either will repair the defective product without charge for parts and labor, or  will provide a replacement in exchange for the defective product. Parts, modules and replacement products used by  Micsig for warranty work may be new or reconditioned to like new performance. All replaced parts, modules and  products become the property of Micsig.

Standard accessories are NOT covered in main body warranty.

The bending radius of the optical isolation probe must not be less than 8cm , otherwise it will lead to fiber  breakage. Damage to the fiber cable is NOT covered by the warranty.

The warranty will be void in the following cases, but repair services are provided free of labor charges and only  parts are charged:

a. Damage to any accessory caused by improper use, maintenance, or storage by the consumer.
b. Damage caused by force majeure factors, such as natural disasters, etc.

Micsig will refuse to provide repair service or provide repair service for a fee in the following cases:

a. Unable to provide product packaging or anti-counterfeit labels on product packaging.
b. The content of the security label is altered, or blurred and unrecognizable.
c. Disassembled by any person not authorized by Micsig. (e.g., changing wires, disassembling internal components, etc.)
d. No sales voucher or sales voucher content does not match the product.

General Safety Summary

Please read the following safety precautions carefully to avoid personal injury and to prevent damage to this product  or any equipment connected to this product.

To avoid possible hazards, be sure to use this product in accordance with the regulations.

Products are only available to personnel with relevant technical training.

To avoid fire or personal injury

Connect and disconnect the equipment properly.

  • Only use the testing wires and accessories that are provided with the product or specified by Micsig.
  • Before connecting the probe to the circuit under test, connect the probe output terminal to the oscilloscope.
  • When connecting to the powered circuits recommended in this manual, maintain a safe distance from the power-optical converter and attenuator.
  • Disconnect the power to the circuit under test before connecting or disconnecting the probe.
  • Before disconnecting the probe from the oscilloscope, first disconnect the probe input terminal from the circuit under test.

Observe all terminal ratings.

To avoid fire or shock hazard, observe all rating and markings on the product. Consult the product manual for  further ratings information before making connections to the product. Do not apply a potential lowest that exceeds  the maximum rating.

Do not operate without covers.

Do not operate this product with covers or panels removed. Hazardous voltage exposure is possible.

Do not operate with suspected failures.

If you suspect that there is damage to this product, have it inspected by qualified service personnel.

Disable the product if it is damaged. Contact Micsig’s designated service personnel to conduct the inspection.

Avoid exposed circuitry. Do not touch exposed connections and components when power is present.

Do not operate in an explosive atmosphere.

Keep product surfaces clean and dry.

Clean with a dry cloth only.

Terms in this manual.

The following terms may appear in this manual:

Warning : Indicating conditions or practices that could result in injury or loss of life.

CAUTION : Indicating conditions or practices that could result in damage to this product or other property.

Maintenance Safety Summary

Only qualified maintenance personnel with the relevant qualifications may perform maintenance operations. Please  read the “Maintenance Safety Summary” and “General Safety Summary” before performing any maintenance  operations.

Do not make repairs alone : Do not make internal repairs or adjustments to this product unless there is someone on  site who can provide first aid and resuscitation measures.

Disconnect the power supply : To avoid electric shock, disconnect the power supply of the equipment first, and  then disconnect the power cord from the main power supply.

Caution when servicing with electricity : Dangerous voltages or currents may be present in this product.  Disconnect the power and test leads before removing the protective panel and performing soldering or component replacement.

To avoid electric shock, do not touch the exposed connectors.

Compliance Information

This section lists the Safety and Environmental standards with which the instrument complies. This product is  intended for use by professionals and trained personnel only; it is not designed for use in households or by children.

Equipment type

Test and measuring equipment.

Pollution level description

A measure of the contaminants that could occur in the environment around and within a product. Typically, the  internal environment inside a product is considered to be the same as the external. Products should be used only in the environment for which they are rated.

  • Pollution Degree 1. No pollution or only dry, nonconductive pollution occurs. Products in this category are generally encapsulated, hermetically sealed, or located in clean rooms.
  • Pollution Degree 2. Normally only dry, nonconductive pollution occurs. Occasionally a temporary conductivity that is caused by condensation must be expected. This location is a typical office/home environment. Temporary condensation occurs only when the product is out of service.
  • Pollution Degree 3. Conductive pollution, or dry, nonconductive pollution that becomes conductive due to condensation. These are sheltered locations where neither temperature nor humidity is controlled. The area is protected from direct sunshine, rain, or direct wind.
  • Pollution Degree 4. Pollution that generates persistent conductivity through conductive dust, rain, or snow. Typical outdoor locations.

Pollution degree rating

Pollution degree 2.

Overvoltage category descriptions

The overvoltage category is classified according to IEC60664 standard and is divided into four classes CAT I, CAT  II, CAT III and CAT IV.

  • Category I. Circuits not directly connected to a mains supply.
  • Category II. Circuits directly connected to the building wiring at utilization points (socket outlets and similar points).
  • Category III. In the building wiring and distribution system.
  • Category IV. At the source of the electrical supply to the building.

Overvoltage category

Overvoltage category II

Environmental Notes

This section provides information about the environmental impact of the product.

Product end-of-life handling

When recycling instruments or components, observe the following guidelines:

Equipment Recycling : Production of this equipment required the extraction and use of natural resources. The  equipment may contain substances that could be harmful to the environment or human health if improperly handled at the product’s end of life. To avoid release of such substances into the environment and to reduce the use of  natural resources, we encourage you to recycle this product in an appropriate system that will ensure that most of the materials are reused or recycled appropriately.

This symbol indicates that the product complies with the relevant requirements of the EU  Directives 2012/96/EC and 2006/66/EC on Waste Electrical and Electronic Equipment (WEEE)  and Batteries.

Introduction

The Micsig SigOFIT™ optical-fiber isolated probe offers a galvanically isolated measurement solution for  accurately resolving high bandwidth, high voltage differential signals in the presence of large common mode  voltages with the excellent common mode rejection capability within its bandwidth range.

Key Features:

  • Exclusive SigOFIT™ optical isolation technology, common mode voltage up to 85kVpk.
  • Differential voltages range 10mV-6250Vpk (attenuating tip dependent)
  • CMRR up to 128dB at 100MHz and up to 108dB at 1GHz
  • 1% accuracy at DC Gain, 1.5% accuracy within effective bandwidth range
  • Fast response, calibration in 1 second, delivers accurate signal output in real time

Applications:

  • Power device evaluation, current parallel measurement, EMI and ESD troubleshooting
  • Motor drive design, power converter design, electronic ballast design
  • Design and analysis of GaN, SiC, IGBT half/full bridge devices
  • Tests of inverters, UPS and switching power supplies
  • Safety isolation test for high voltage, high bandwidth applications
  • Wide voltage, wide band test applications
  • Floating measurements

Probe Description

Optical-Electrical Converter

The Optical-Electrical Converter (O-E Converter herein after) can restore the optical signal transmitted by the  Electrical-Optical converter (E-O Converter herein after) to an electrical signal and input to the oscilloscope. The buttons on the O-E converter are to control the probe and the LEDs indicate the operating status of the probe.

Optical-Electrical Converter (O-E Converter)

Button Description:

Button: Cali.

Short press to start Auto calibration, calibration time is usually less than 1 second, no need to wait. During  calibration, no need to disconnect the test connection. LED will flash during calibration, the buzzer sounds one  time indicates a successful calibration, three times indicates a failed calibration, press Cali. button again if failed.

Button: Gain

Short press “Gain” to switch between 0dB and 20dB. The attenuation factor of the attenuator is not fixed, the  corresponding attenuation factor needs to be set according to the indicator light.

Over-voltage Alert

When Gain (Power) button flashes rapidly and hearing a rapid “DiDiDiDi…” buzzer sound, it means the input voltage is out of range, please select a suitable attenuating tip.

Over-heating Warning:

When hearing a “DiDi” sound every 2 seconds, it means the temperature of the Optical-Electrical (O-E)  converter is overheated, please check whether the dissipation port is blocked.

Electrical-Optical Converter

The Electrical-Optical (E-O) converter converts the electrical signal from device under test into an optical signal  and transmits it via optic fiber to the Optical-Electrical (O-E) converter.

The E-O converter of SigOFIT probe is powered over fiber, no additional power supply required.

Electrical-Optical Converter

Electrical-Optical Converter

E-O converter attenuating tips

Attenuating tip options on E-O converter end:

Photo Description Model name
Attenuation ratio of 10:1 OP10
Attenuation ratio of 20:1 OP20
Attenuation ratio of 50:1 OP50
Attenuation ratio of 100:1 OP100
Attenuation ratio of 200:1 OP200
Attenuation ratio of 500:1 OP500
Attenuation ratio of 1000:1 OP1000
Attenuation ratio of 2000:1 OP2000
Attenuation ratio of 5000:1 OP5000
Attenuation ratio of 10000:1 OP10000

Install the attenuating tip

As shown in the figure below, screw the attenuating tip into the E-O converter end till firmly tightened.

How to choose an attenuator:

Caution: Please select proper attenuator for the measurement to avoid damage to the Electrical-Optical converter or degradation of performance due to over- voltage.

Please select the attenuating tip with the lowest attenuation ratio allowed by the tested signal range.

The attenuator should be selected based on the peak voltage (or rms voltage) of the signal under test. Please  refer to the technical specifications to select the appropriate attenuator.

Precaution Requirements

Measurement System Precautions

SigOFIT probe contains high quality components and should be handled with care to avoid damage or degradation  of performance due to improper handling. Please consider the following precautions when handling fiber optic cable and electrical-to-optical converter end connections:

  • DO NOT excessively bend fiber-optic cable. Avoid tight radius ( 8cm) bends, crushing, crimping, twisting, pulling or otherwise stressing cables.
  • DO NOT block the heat dissipation port on the Optical-Electrical converter (or O-E Converter), otherwise the probe may be overheated and damaged.
  • Do not put heavy objects on the fiber cable, such as running over with a chair.
  • When disassembling and moving the probe, please hold the converter body by hand, do not lift or drag the cable.
  • Accidental drop of the E-O or the O-E converter may result in damage to internal optical components.
  • Please check damage to the fiber cable, (as shown below) please stop use when there is damage to the flexible braided cable or the soft rubber sheath.
  • When not in use, store the SigOFIT probe in its factory fitted carrying case.

Environmental requirements

Features Status Environmental requirements
Temperature Working Optical-Electrical converter: 0° C ~ +40° C

Electrical-Optical converter: 0° C ~ +40° C
Non-working| Optical-Electrical converter: -20° C ~ +70° C
Electrical-Optical converter: -20° C ~ +70° C
Humidity| Working| Optical-Electrical converter: 5% to 85% RH (relative humidity) below +30° C, non condensing
Electrical-Optical converter: 5% to 85% RH (relative humidity) below +40° C; 5%  to 45% RH at +40° C ~ +50° C, non-condensing
Non-working| Optical-Electrical converter: 5% to 85% RH below +40° C; 5% to 45% RH at +40°  C ~ +85° C, non-condensing
Electrical-Optical converter: 5% to 85% RH below +40° C; 5% to 45% RH at +40° C ~ +85° C, non-condensing
Altitude| Working| 3000 meters
Non-working| 12,000 meters

Safety Requirements

The high common-mode voltage range of SigOFIT optically isolated probe can be applied to measurements where  high-frequency and high-voltage common-mode signals are present. Please read and understand all precautions  when measuring with this product.

Warning: Electric shocks may occur when using this measurement system. The system is used to isolate the  personnel from dangerous input voltages (common voltage); the plastic housing of the Electrical-Optical converter  and the shielding of the attenuator do not provide safe isolation.

Keep a safe distance from the Electrical-Optical converter and the attenuator when the measurement system is  connected to an energized circuit as recommended in this manual. When making measurements on energized  circuits, do not touch radio frequency burn hazard area.

Safe distance from electro-optical converters and attenuators when measuring high-voltage common-mode signals:

Common model voltage (AC) 10kV or below 10 kV ~ 35 kV > 35 kV
Safe distance >0.7m >1m >1.5m

Warning: Do not disassemble the electrical-optical converter or the optical- electrical converter. They contain a  laser source which may result in laser exposure.

Warning: To avoid the risk of electric shock, do not connect the measurement system directly to an energized  circuit. Always disconnect the test circuit before installing or removing the attenuating tip from the test circuit. The plastic housing the converter and the shielded end of the attenuator do not provide isolation.

Warning: To avoid the risk of electric shock or RF burn when the circuit under test is energized, do not touch  the electrical-optical converter and its attenuator while testing. Always maintain a distance of 1 meter or more from the electrical-optical converter during the test. Be sure to review the instrument’s maximum ratings and derating  curves for more information on RF burn areas.

Warning: To avoid possible damage to the device, do not connect the probe of the electrical-optical converter  connection to a high impedance part of the circuit. Additional capacitance may cause damage to the circuit. Please connect the probe connected to the electrical-optical converter to the low impedance part of the circuit. Note:  Touching the electrical-optical converter or attenuator while measuring high frequency common mode signals will  increase capacitive coupling and may reduce the common mode loading of the test circuit.

Warning: To prevent arc flash caused by different potentials, do not place the electrical-optical converter end  attenuator in a circuit with different voltages.

Installation

Operation Steps

  1. Connect the optical-electrical converter to the oscilloscope;

  2. Set the oscilloscope input impedance to 50 Ω, set the corresponding attenuation ratio and delay time;

  3. Connect the attenuating tip to the electrical-optical converter;

  4. Power the SigOFIT probe by connecting USB-C cable to O-E Converter using standard charger (localized), the E-O Converter will be powered on automatically, vice versa, when the O-E converter powered off, the E-O converter will be powered off simultaneously.

  5. Solder the MMCX or MCX adapter to the test board.
    Notice:

  6. When testing Vgs signal, the signal pin (in the middle) of the adapter must be connected to the G-end of the MOSFET;

  7. Solder the adapter directly to the test point, try NOT to use extension lead, it may bring unsatisfactory test results.

  8. For easy soldering, suggest to cut three of the four ground pins around the base (Figure below), just keep one. adapter

  9. Plug the attenuating tip to the adapter;

  10. Power ON the test board;

  11. Adjust the oscilloscope settings and proceed normal test;

Auto calibration and manual Zero

The SigOFIT probe has auto-calibration function that automatically corrects the gain accuracy. Always press Cali.  button to get better results before get final test readings. No need to disconnect the test during calibration. Auto calibration can be completed in 1 second.

Technical Specifications

All technical specifications are typical values unless otherwise indicated.

Technical specifications are valid when:

  • Probe is calibrated at 23°C ±5°C ambient temperature
  • Probe is powered by normal power supply
  • The temperature, altitude, and humidity of the environment in which the probe is located cannot exceed the limits of the stated environmental requirements.

Electrical Characteristics

Model & Ordering

Name

| MOIP100P| MOIP200P| MOIP350P| MOIP500P| MOIP800P| MOIP1000P
---|---|---|---|---|---|---
Bandwidth| 100MHz| 200MHz| 350MHz| 500MHz| 800MHz| 1GHz
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), 12,000 m (non-operating)
Usage| Indoor Use Only
Package size| 371132.5 cm
Package GW| 2.2KG

Attenuating tips

SigOFIT

model

| Atten. Tip

model

| Adapter type| Attenuation

ratio

| Voltage

range

| Non

destructive

voltage (Max.)

| Input

impedance

---|---|---|---|---|---|---
MOIP100P &

MOIP200P

| OP10-2| MMCX| 10:1 @0dB| ±12.5V| 1000Vpp| 3.75MΩ || 6pF
1:1 @20dB| ±1.25V
OP20-2| MMCX| 20:1 @0dB| ±25V| 1000Vpp| 4.47MΩ || 4pF
2:1 @20dB| ±2.5V
OP50-2| MMCX| 50:1 @0dB| ±62.5V| 1000Vpp| 4.19MΩ || 2pF
5:1 @20dB| ±6.25V
OP100-2| MMCX| 100:1 @0dB| ±125V| 1000Vpp| 4.10MΩ || 2pF
10:1 @20dB| ±12.5V
OP200-2| MCX| 200:1 @0dB| ±250V| 2500Vpp| 9.03MΩ || 2pF
20:1 @20dB| ±25V
OP500-2| MCX| 500:1 @0dB| ±625V| 2500Vpp| 20.98MΩ || 1pF
50:1 @20dB| ±62.5V
OP1000-2| MCX| 1000:1 @0dB| ±1250V| 2500Vpp| 20.94MΩ || 1pF
100:1 @20dB| ±125V
OP2000-2| MCX| 2000:1 @0dB| ±2500V| 2500Vpp| 20.52MΩ || 1pF
200:1 @20dB| ±250V
OP5000-2| LCX| 5000:1 @0dB| ±6250V| 8000Vpp| 40.82MΩ|| 2.4pF
500:1 @20dB| ±625V
MOIP350P| OP10-3| MMCX| 10:1 @0dB| ±12.5V| 1000Vpp| 3.75MΩ || 6pF
1:1 @20dB| ±1.25V
OP20-3| MMCX| 20:1 @0dB| ±25V| 1000Vpp| 4.47MΩ || 4pF
2:1 @20dB| ±2.5V
OP50-3| MMCX| 50:1 @0dB| ±62.5V| 1000Vpp| 4.19MΩ || 2pF
5:1 @20dB| ±6.25V
OP100-3| MMCX| 100:1 @0dB| ±125V| 1000Vpp| 4.10MΩ || 2pF
10:1 @20dB| ±12.5V
OP200-3| MCX| 200:1 @0dB| ±250V| 2500Vpp| 9.03MΩ || 2pF
20:1 @20dB| ±25V
OP500-3| MCX| 500:1 @0dB| ±625V| 2500Vpp| 20.98MΩ || 1pF
50:1 @20dB| ±62.5V
OP1000-3| MCX| 1000:1 @0dB| ±1250V| 2500Vpp| 20.94MΩ || 1pF
100:1 @20dB| ±125V
OP2000-3| MCX| 2000:1 @0dB| ±2500V| 2500Vpp| 20.52MΩ || 1pF
200:1 @20dB| ±250V
OP5000-3| LCX| 5000:1 @0dB| ±6250V| 8000Vpp| 40.82MΩ|| 2.4pF
500:1 @20dB| ±625V

MOIP500P| OP10-5| MMCX| 10:1 @0dB| ±5V| 1000Vpp| 3.75MΩ || 6pF
---|---|---|---|---|---|---
1:1 @20dB| ±0.5V
OP20-5| MMCX| 20:1 @0dB| ±10V| 1000Vpp| 4.47MΩ || 4pF
2:1 @20dB| ±1V
OP50-5| MMCX| 50:1 @0dB| ±25V| 1000Vpp| 4.19MΩ || 2pF
5:1 @20dB| ±2.5V
OP100-5| MMCX| 100:1 @0dB| ±50V| 1000Vpp| 4.10MΩ || 2pF
10:1 @20dB| ±5V
OP200-5| MCX| 200:1 @0dB| ±100V| 2500Vpp| 9.03MΩ || 2pF
20:1 @20dB| ±10V
OP500-5| MCX| 500:1 @0dB| ±250V| 2500Vpp| 20.98MΩ || 1pF
50:1 @20dB| ±25V
OP1000-5| MCX| 1000:1 @0dB| ±500V| 2500Vpp| 20.94MΩ || 1pF
100:1 @20dB| ±50V
OP2000-5| MCX| 2000:1 @0dB| ±1000V| 2500Vpp| 20.52MΩ || 1pF
200:1 @20dB| ±100V
OP5000-5| MCX| 5000:1 @0dB| ±2500V| 3600Vpp| 40.92MΩ || 1pF
500:1 @20dB| ±250V
OP10000-5| LCX| 10000:1 @0dB| ±5000V| 8000Vpp| 40.82MΩ|| 2.4pF
1000:1 @20dB| ±500V
MOIP800P &

MOIP1000P

| OP10-1G| MMCX| 10:1 @0dB| ±5V| 1000Vpp| 3.75MΩ || 6pF
1:1 @20dB| ±0.5V
OP20-1G| MMCX| 20:1 @0dB| ±10V| 1000Vpp| 4.47MΩ || 4pF
2:1 @20dB| ±1V
OP50-1G| MMCX| 50:1 @0dB| ±25V| 1000Vpp| 4.19MΩ || 2pF
5:1 @20dB| ±2.5V
OP100-1G| MMCX| 100:1 @0dB| ±50V| 1000Vpp| 4.10MΩ || 2pF
10:1 @20dB| ±5V
OP200-1G| MCX| 200:1 @0dB| ±100V| 2500Vpp| 9.03MΩ || 2pF
20:1 @20dB| ±10V
OP500-1G| MCX| 500:1 @0dB| ±250V| 2500Vpp| 20.98MΩ || 1pF
50:1 @20dB| ±25V
OP1000-1G| MCX| 1000:1 @0dB| ±500V| 2500Vpp| 20.94MΩ || 1pF
100:1 @20dB| ±50V
OP2000-1G| MCX| 2000:1 @0dB| ±1000V| 2500Vpp| 20.52MΩ || 1pF
200:1 @20dB| ±100V
OP5000-1G| MCX| 5000:1 @0dB| ±2500V| 3600Vpp| 40.92MΩ || 1pF
500:1 @20dB| ±250V
OP10000-1G| LCX| 10000:1 @0dB| ±5000V| 8000Vpp| 40.82MΩ|| 2.4pF
1000:1 @20dB| ±500V

adapters and coaxial lead

Accessory name Withstand voltage range
MMCX-adapter <300 Vpp
MCX-adapter <3000 Vpp
MMCX coaxial lead <300 Vpp
MCX coaxial lead <3000 Vpp
LCX coaxial lead <8000 Vpp

Mechanical characteristics

| Characteristics| Parameters
---|---|---
| Optical-Electrical (O-E) converter size| 9.8 x 4.5 x 2.1 cm
| Electrical–Optical (E-O)

converter size

| 11 x 4 x 2.3 cm
| Optical cable length| 2m

Amplitude and frequency characteristics curve

Amplitude-frequency characteristics of different SigOFIT
probes

▲Amplitude-frequency characteristics of different SigOFIT probes

Attenuating tip CMRR

Attenuating tip CMRR

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

Maintenance Service

This section provides information on the maintenance of the SigOFIT probe.

Troubleshooting

The LED light indicate working states of the SigOFIT probe, if the Green light is not ON, possible problems that  you might encounter when taking measurements. Use the tables as a quick troubleshooting reference before contacting Micsig for service.

Failure phenomenon Possible causes and solutions
Signal amplitude does not  match as expected • The input signal may out of

the oscilloscope display range

• Ensure that the input signal is within the range

DC measurement error exists| • Whether the oscilloscope or the probe itself has zero drift, please zero the equipment before measurement

• Check if the oscilloscope is on AC coupling

• Adjust the time base of the oscilloscope to more than 1ms

• DC measurement should observe the average value on the oscilloscope

Big noise, unable to accurately measure weak signal| • Select the probe with lower attenuation to connect the E-O converter

• Ensure the oscilloscope attenuation ratio is consistent with the SigOFIT probe

• Set the oscilloscope vertical scale to a smaller value

• Pay attention to the noise floor of the oscilloscope and the probe itself

No signal is captured and the  waveform is a straight line at  the zero point| • Check oscilloscope coupling settings

• Check whether the probe is powered on

Maintenance

Do not expose the probe to harsh weather conditions, the probe is not waterproof.

Note: The probe is not waterproof and to prevent damage to the probe, do not expose it to sprays, liquids or  solvents. Avoid wetting the inside when performing exterior cleaning of the probe.

Do not wipe the probe with chemical cleaners.

Clean the outer surface of the probe with a dry, non-linting soft cloth or a soft bristle brush.

When not in use, store the SigOFIT probe in the suitcase provided by Micsig.

Ordering Information

Models

MOIP100P Micsig SigOFIT 100MHz, Optical-fiber Isolated Probe, 2-meter cable
MOIP200P Micsig SigOFIT 200MHz, Optical-fiber Isolated Probe, 2-meter cable
MOIP350P Micsig SigOFIT 350MHz, Optical-fiber Isolated Probe, 2-meter cable
MOIP500P Micsig SigOFIT 500MHz, Optical-fiber Isolated Probe, 2-meter cable
MOIP800P Micsig SigOFIT 800MHz, Optical-fiber Isolated Probe, 2-meter cable
MOIP1000P Micsig SigOFIT 1GHz, Optical-fiber Isolated Probe, 2-meter cable

Accessories

MMCX connector 5 Connecting SigOFIT and the circuit under test
MCX connector
5 Connecting SigOFIT and the circuit under test
MMCX coaxial cable 1 Connecting SigOFIT and the circuit under test
MCX coaxial cable
1 Connecting SigOFIT and the circuit under test
LCX coaxial cable 1 (optional) Connecting SigOFIT and the circuit under test
Carrying Case
1 Suitcase with EVA foam
Probe Mount 1 Bipod mount to support E-O converter
DC power supply
1  12V 3A, to power the O-E Converter
Attenuating tip(s) Configured as per specific model
Quick user guide 1
Calibration Certificate
1
Packing list *1

Optional Accessories

OP10-x Attenuating tip of 10X
OP20-x Attenuating tip of 20X
OP50-x Attenuating tip of 50X
OP100-x Attenuating tip of 100X
OP200-x Attenuating tip of 200X
OP500-x Attenuating tip of 500X
OP1000-x Attenuating tip of 1000X
OP2000-x Attenuating tip of 2000X
OP5000-x Attenuating tip of 5000X
OP10000-x Attenuating tip of 10000X

Remarks:

OPXX- is attenuator tip, XX means attenuation ratio, means bandwidth.

i.e, OP10-2 is an attenuator tip with 10X, bandwidth of 200MHz.

Refer to following list to choose applicable attenuator tip:

Model No. Standard Tip(s) Optional Tip(s)
MOIP100P OP20-2 OP10-2,OP20-2,OP50-2

OP100-2,OP200-2,OP500-2

OP1000-2,OP2000-2,OP5000-2

MOIP200P
MOIP350P| OP20-3

OP1000-3

| OP10-3,OP20-3,OP50-3

OP100-3,OP200-3,OP500-3

OP1000-3,OP2000-3,OP5000-3

MOIP500P| OP50-5

OP2000-5

| OP10-5,OP20-5,OP50-5

OP100-5,OP200-5,OP500-5

OP1000-5,OP2000-5,OP5000-5

MOIP800P| OP50-1G

OP2000-1G

| OP10-1G,OP20-1G,OP50-1G

OP100-1G,OP200-1G,OP500-1G

OP1000-1G,OP2000-1G,OP5000-1G

OP10000-1G

MOIP1000P

Supported Oscilloscopes

Any oscilloscope with standard BNC interface and 50Ω impedance.

After Sales Service / Service Support **

**

Optical-fiber Isolated Probe main body warranty for 1 year (extendable with extra charge). The SigOFIT probe contains high-quality components and should be treated with care, Damage to the fiber optic  cable is NOT covered by the warranty.

Standard accessories are NOT covered in main body warranty.

Micsig provides one-on-one exclusive technical support service.

During the warranty period, Micsig will be responsible for providing free maintenance for any malfunctions caused  by quality issues within the normal use of the product that have not been disassembled or repaired.

The warranty will be invalid in the following cases, but repair services can be provided, free of labor costs, and  only parts fees will be charged:

a. Any damage to accessories caused by improper use, maintenance, or storage by consumers.
b. Damage caused by force majeure factors, such as natural disasters.

Micsig will refuse to provide repair services or provide paid repair services in the following situations:

a. Unauthorized dismantling, such as changing wires, dismantling internal components, etc.
b. No sales voucher or the content of the sales voucher does not match the product.

  • Micsig reserves the right of final interpretation for the content hereinabove;

  • It is subject to update without prior notice;

  • Please contact local distributor for any inquiry or send us email directly.

Shenzhen Micsig Technology Co., Ltd.
Add: 1F, Bldg A, Huafeng International Robot Industrial Park, Hangcheng Rd, Bao’an District, Shenzhen, Guangdong, China
TEL: +86-(0)755-88600880
Email: [email protected]
Web: www.micsig.com

www.micsig.com

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