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TIVM Series
IsoVu™ Measurement System
ZZZ
User Manual
*P071349500*
071-3495-00

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Summary of Contents for Tektronix IsoVu TIVM Series

  • Page 1 TIVM Series IsoVu™ Measurement System User Manual *P071349500* 071-3495-00...
  • Page 3 TIVM Series IsoVu™ Measurement System User Manual Register now! Click the following link to protect your product. ► www.tek.com/register www.tek.com 071-3495-00...
  • Page 4 Copyright © Tektronix. All rights reserved. Licensed software products are owned by Tektronix or its subsidiaries or suppliers, and are protected by national copyright laws and international treaty provisions. Tektronix products are covered by U.S. and foreign patents, issued and pending. Information in this publication supersedes that in all previously published material.
  • Page 5 Tektronix, with shipping charges prepaid. Tektronix shall pay for the return of the product to Customer if the shipment is to a location within the country in which the Tektronix service center is located. Customer shall be responsible for paying all shipping charges, duties, taxes, and any other charges for products returned to any other locations.
  • Page 7: Table Of Contents

    Table of Contents Important safety information ..................General safety summary ..................Service safety summary ..................Terms in this manual ..................viii Symbols and terms on the product ................. viii Preface ......................Key features ....................Laser certification..................... Product description .................... Models ......................Supported oscilloscopes..................
  • Page 8 Table of Contents User service ......................Service offerings ....................Preventive maintenance ..................Performance verification procedures ............... Propagation delay..................... Troubleshooting and error conditions ..............Repack the measurement system for shipment ............Test record ..................... Appendix A: Remote programming ................CH<n>:PRObe?....................CH<n>:PRObe:AUTOZero EXECute ..............CH<n>:PRObe:COMMAND “CLAMP”, {“ON”...
  • Page 9 List of Figures Figure i: TIVM Series IsoVu Measurement System............Figure 1: Maximum safe handling limits for common mode voltages between the sensor head and earth ground......................Figure 2: RF burn hazard zone around the sensor head ............Figure 3: Controller indicators and buttons..............Figure 4: Labels on the sensor head ................
  • Page 10 Table of Contents List of Tables Table 1: Standard accessories ..................Table 2: Optional accessories ..................Table 3: Input specifications..................Table 4: Environmental considerations ................Table 5: Controller indicators and buttons............... Table 6: Sensor tip selection table ................Table 7: Input offset ....................Table 8: Warranted specifications................
  • Page 11: Important Safety Information

    Use only injury test leads and accessories supplied with the product, or indicated by Tektronix to be suitable for the product. Observe all terminal ratings. To avoid fire or shock hazard, observe all ratings and markings on the product.
  • Page 12 Important safety information Do not apply a potential that exceeds the maximum rating. Do not operate without covers. Do not operate this product with covers or panels removed, or with the case open. Hazardous voltage exposure is possible. Avoid exposed circuitry. Do not touch exposed connections and components when power is present.
  • Page 13: Service Safety Summary

    Important safety information on the instrument and your application. Refer to the Specifications section of the manual for more information. WARNING. To prevent electrical shock, do not exceed the maximum measurement or maximum voltage category. Connect and disconnect properly. CAUTION. To avoid damage to the equipment, de-energize the test circuit before connecting or disconnecting the sensor tip cable.
  • Page 14: Terms In This Manual

    Important safety information Terms in this manual These terms may appear in this manual: WARNING. Warning statements identify conditions or practices that could result in injury or loss of life. CAUTION. Caution statements identify conditions or practices that could result in damage to this product or other property.
  • Page 15: Preface

    Preface Preface This document provides information for installing and using the Tektronix TIVM Series IsoVu Measurement System. The measurement system offers a galvanically isolated measurement solution for accurately resolving high bandwidth, low voltage differential signals up to ±50 Vpk in the presence of large common mode voltages with the best in class common mode rejection performance across its bandwidth.
  • Page 16: Product Description

    Preface Product description The Tektronix TIVM Series IsoVu Measurement System offers a completely galvanically isolated (optical isolation) system. The system consists of a sensor tip cable, a sensor head, a controller, and a TekVPI interface as shown in the following figure. Hazardous voltages in the sensor head are completely isolated from the controller and oscilloscope by optical fiber cables.
  • Page 17: Models

    Models The TIVM Series IsoVu Measurement System includes the following models: TIVM1. Tektronix IsoVu 1 GHz Medium Voltage with 3 m cable TIVM1L. Tektronix IsoVu 1 GHz Medium Voltage with 10 m cable TIVM05. Tektronix IsoVu 500 MHz Medium Voltage with 3 m cable TIVM05L.
  • Page 18 Preface TIVM Series Measurement System User Manual...
  • Page 19: Operating Information

    Operating information Accessories This section lists the standard and optional accessories available for the measurement system. Standard accessories Table 1: Standard accessories Tektronix Accessory part number IsoVu product carrying case, soft case 016-2108-xx IsoVu accessories carrying case, soft case 016-2110-xx Solder aid for 0.062-inch (1.57 mm) pitch square pins (0.016 - 0.018-inch...
  • Page 20: Operating Considerations

    Operating information Optional accessories Additional accessories, such as other sensor tip cables are available. The following table lists the optional accessories. Table 2: Optional accessories Tektronix Accessory part number 1X Sensor tip cable IVTIP1X IVTIP10X 10X Sensor tip cable 50X Sensor tip cable...
  • Page 21: Table 3: Input Specifications

    Operating information Environmental The following tables describe specifications and maximum operating environmental ratings for the measurement system when connected to a DUT requirements and a Tektronix oscilloscope. Table 3: Input specifications Feature Description Common mode 1000 V , CAT II...
  • Page 22 Operating information Table 4: Environmental considerations (cont.) Feature Description Sensor tip cables/adapters Operating 5% to 80% RH (Relative Humidity), at up to 40 °C (104 °F) 5% to 45 % RH above 40 °C (104 °F) up to 85°C (185 °F), non-condensing Non operating 5% to 85% RH (Relative Humidity), at up to 40 °C (104 °F)
  • Page 23: Figure 1: Maximum Safe Handling Limits For Common Mode Voltages Between The Sensor Head And Earth

    Operating information While measuring high frequency common mode signals, there is a risk of RF burns. Refer to the following derating curve to identify the danger areas. Measuring common mode signals within the light gray area can result in RF burns while directly contacting the sensor head.
  • Page 24: Figure 2: Rf Burn Hazard Zone Around The Sensor Head

    Operating information The following figure shows the components of the measurement system and the potential RF burn area when working with hazardous voltages. Figure 2: RF burn hazard zone around the sensor head TIVM Series Measurement System User Manual...
  • Page 25: Controls And Indicators

    Operating information Controls and indicators Controller The following figure shows the indicators and buttons on the controller; their functions are described in the following table. Figure 3: Controller indicators and buttons Table 5: Controller indicators and buttons Item Description OVER RANGE Indicator. This red LED indicates if the DC/low frequency differential voltage applied to the sensor head or attached sensor tip cable has exceeded the maximum specified input voltage levels.
  • Page 26 Solid or flashing red. Error condition that requires the unit to be sent to Tektronix for service. Flashing red/yellow. The unit has failed the power on self tests. Cycle the power; if the problem persists, the unit needs to be sent to Tektronix for service.
  • Page 27: Figure 4: Labels On The Sensor Head

    Operating information Sensor head Labels on the sensor head provide high-level specifications for connecting to the DUT. They also provide reminders of the potential RF burn hazards while connected to the DUT. Figure 4: Labels on the sensor head Sensor tip cables Each sensor tip cable has a set of labels on the top and bottom.
  • Page 28: Connecting To A Circuit

    Operating information Connecting to a circuit WARNING. This measurement system contains laser sources; exposing these laser sources may cause laser exposure. Except for the sensor tip cables on the sensor head, do not remove any plastic or metallic covers from the sensor head or controller or attempt to disassemble the product.
  • Page 29: Figure 6: Connect The Comp Box To The Oscilloscope

    Operating information The following steps describe the process for connecting the measurement system between a Tektronix oscilloscope and the DUT. 1. Verify the DUT is not connected to an energized circuit. 2. Connect the Comp box to one of the channels on the oscilloscope.
  • Page 30: Self Calibration

    Operating information 4. Connect the sensor head to the flexible tripod or a similar support. This support keeps the sensor head steady reducing the potential mechanical stresses at the electrical connection point of the DUT. The support also keeps the sensor head away from surrounding circuits and conductive objects to minimize the parasitic capacitive coupling to these surroundings.
  • Page 31 Operating information When you power on the measurement system, the SELF CAL status indicator on the controller is orange, indicating that the operating point of the measurement system has not been optimized. As a result, the accuracy of the measurement system might be degraded.
  • Page 32: Autozero

    Operating information AutoZero When the displayed waveform is not centered correctly (for example, due to a small DC offset error), you might need to press the AutoZero button in the Probe Setup menu of the oscilloscope. This might be necessary for the first time after the self calibration operation has completed.
  • Page 33: Offset Correction

    Operating information Offset correction The measurement system uses state-of-the-art technology that allows the DUT to be totally isolated from the oscilloscope. This results in a very large common mode rejection ratio (CMRR) and lets you see small signals that would otherwise be obscured by the high common mode interference.
  • Page 34: Figure 11: Digital Filter Aberrations

    Operating information Another source of aberrations is introduced when the signal is below the cutoff frequency of the digital filter (5.0 Hz). The following figure shows a close-up view of the front edge of a 0.1 Hz 800 mV square wave. These aberrations are also created by the digital filter.
  • Page 35: 1X/2X Range

    Operating information Figure 12: Digital filter aberrations after disabling offset correction 1X/2X Range The top label of each sensor tip cable (IVTIP1X, IVTIP5X, IVTIP10X, IVTIP25X, IVTIP50X) shows the dynamic range in peak-to-peak volts as shown in the following figure. Figure 13: Top sensor tip labels TIVM Series Measurement System User Manual...
  • Page 36: Auto Range

    Operating information For example, the IVTIP5X tip has a dynamic range of 5 V when the 1X Range is selected. This means that you can display a signal with a ±2.5 V differential voltage. When the 2X Range is selected, the dynamic range increases from 5 V to 10 V (±5.0 V).
  • Page 37: Selecting A Sensor Tip Cable

    Operating information Selecting a sensor tip cable CAUTION. Avoid over-voltage conditions that can damage or degrade the sensor head input termination by selecting the wrong sensor tip cable. The sensor head SMA input is a 50 Ω terminated input. Selecting the correct sensor tip cable attenuation factor is crucial to ensure that the sensor head input termination is not degraded or damaged by an over-voltage condition.
  • Page 38: Output Clamping

    Operating information Output clamping The measurement system has a selectable output clamping feature. Push the button on the controller to enable or disable the output clamping feature. When enabled (indicator is on), the output clamping limits the output voltage swing of the measurement system into the oscilloscope input.
  • Page 39: Probe Compensation

    Operating information Probe compensation The DPO7000 and MSO/DPO70000 Series oscilloscopes have a Compensate Probe feature accessible from the Probe Setup window. Pressing this button always results in a failure because the input resistance of the TIVM sensor tips is too low and cannot be driven by the calibrator output of the oscilloscope. The accuracy of the TIVM system is still guaranteed on these oscilloscopes even though the Compensate Probe feature fails.
  • Page 40 Operating information TIVM Series Measurement System User Manual...
  • Page 41: Application Examples

    Application examples The following examples are provided to help you become familiar with the TIVM Series IsoVu measurement system and to achieve the best performance for your application. Example 1: High-side V measurement Advancements in the components used in switching power supplies have made characterizing the performance of these power supplies increasingly difficult and challenging.
  • Page 42: Figure 16: High-Side Turn-On Characteristics

    Application examples In this example, the gate drive voltage could be about 5 V but usually has some ringing and overshoot which are important to characterize. For this measurement, it is appropriate to use a 10X tip with a 10 V input (on the 1X range) so that the signal is fully resolved and is within the dynamic range of the measurement system.
  • Page 43: Example 2: High-Side Drain Current Measurement

    Application examples In general there are three characteristic regions of interest of the turn-on waveform (See Figure 16.): The first region is the C charge time. The second region is the Miller Plateau (the time required to charge the gate-drain Miller capacitance (C ), and is V dependent.
  • Page 44: Example 3: Esd Troubleshooting

    Application examples In a typical application, a 0.25 Ω resistor might be used to measure a transient current of 1 A, resulting in a voltage swing of 0.25 V, which can be measured with the measurement system using a 1X or 5X tip. A typical surface mount resistor can have a series inductance of less than 0.2 nH and series capacitance of less than 0.04 pF, resulting in much lower impedance at high frequency than could be obtained with a conventional current probe.
  • Page 45: Figure 19: Esd Discharge Test Example

    Application examples Figure 19: ESD discharge test example In this example, if it is suspected that there is a glitch on the communication bus between two devices during the ESD discharge, then it is helpful to connect to the signals on the bus and to inspect them during the discharge. Because the measurement system uses Galvanic isolation, it rejects any interference from the ESD transient and tolerates the high common mode voltage during the discharge;...
  • Page 46 Application examples TIVM Series Measurement System User Manual...
  • Page 47: Reference Information

    Reference information Specifications The following tables list the specifications for the measurement system. The specifications are guaranteed unless otherwise indicated. The performance limits in this specification are valid with these conditions: The instrument must be in an environment with temperature, altitude, and humidity within the operating limits described in these specifications.
  • Page 48 Reference information Table 9: Electrical specifications (cont.) Characteristic Description Input Sensor tip cable/adapter Resistance Capacitance resistance/capacitance Sensor head input SMA 50 Ω ± 2% (attached to sensor head, IVTIP1X, 1X Sensor tip cable 50 Ω 50 Ω termination), (Typical) < 1pF IVTIP5X, 5X Sensor tip cable 250 Ω...
  • Page 49 Reference information Table 9: Electrical specifications (cont.) Characteristic Description System noise 1 GHz system noise (input referred) (Typical) Sensor tip cable/adapter 1X Range 2X Range < 0.8 mV < 1.6 mV Sensor head input SMA IVTIP1X, 1X Sensor tip cable <...
  • Page 50 Reference information Table 9: Electrical specifications (cont.) Characteristic Description Common mode rejection ratio (Typical) Sensor tip cable/adapter 100 MHz 200 MHz 500 MHz 1 GHz > 120 dB 120 dB 110 dB 100 dB 90 dB IVTIP1X, 1X Sensor tip cable IVTIP5X, 5X Sensor tip >...
  • Page 51: Dimensional Drawings

    Reference information Table 10: Physical specifications Characteristic Description Net weight (Weight does not include accessories and packaging.) Sensor tip cables 0.025 kg (0.055 lb) Sensor head 0.363 kg (0.8 lb) Controller box 0.816 kg (1.8 lb) TekVPI Comp box 0.57 kg (0.125 lb) Sensor tip cable length 15.24 cm (6.0 in) Fiber cable length...
  • Page 52: Figure 21: Sensor Head Dimensions Without Probe Tip Cover

    Reference information Figure 21: Sensor head dimensions without probe tip cover Figure 22: Controller dimensions TIVM Series Measurement System User Manual...
  • Page 53: Figure 23: Comp Box Dimensions

    Reference information Figure 23: Comp box dimensions Figure 24: Probe tip adapter dimensions TIVM Series Measurement System User Manual...
  • Page 54: Isovu Measurement System Block Diagram

    Reference information IsoVu measurement system block diagram The following figure shows a block diagram of the IsoVu measurement system. Figure 25: Block diagram The common mode resistance and capacitance to earth ground is shown in the figure. (See Figure 25.) The common mode resistance is shown as R parasitic and is essentially infinite with the IsoVu measurement system since it is galvanically isolated and can be ignored.
  • Page 55: Tripods

    This tripod has flexible hinges to easily position the probe tip cable above the adapter on the circuit board. Tektronix recommends gluing the tripod in place on the circuit board to provide additional support for the sensor tip cables. The following figure shows an example of connecting to an adapter on the circuit...
  • Page 56: Figure 28: Connecting To An Adapter On The Circuit Board With The Probe Tip Tripod

    Reference information Figure 28: Connecting to an adapter on the circuit board with the probe tip tripod TIVM Series Measurement System User Manual...
  • Page 57: Installing The Probe Tip Adapters

    Reference information Installing the probe tip adapters Tektronix provides two probe tip adapters to connect the sensor tip cables to pins on the circuit board. The MMCX-to-0.1-inch (2.54 cm) pitch adapter and the MMCX-to-0.062-inch (1.57 mm) pitch adapter. One end of each adapter has an MMCX socket for connection to an IsoVu tip cable.
  • Page 58: Figure 30: Lining Up The Mmcx-To-0.062-Inch (1.57 Mm) Adapter On The Circuit Board

    Reference information Figure 30: Lining up the MMCX-to-0.062-inch (1.57 mm) adapter on the circuit board After lining up the adapters gently push down on the adapter to seat it in place on the circuit board. Figure 31: Pushing the MMCX-to-0.062-inch (1.57 mm) adapter in place TIVM Series Measurement System User Manual...
  • Page 59: Figure 32: Pushing The Mmcx-To-0.1-Inch (2.54 Mm) Adapter In Place

    Reference information Figure 32: Pushing the MMCX-to-0.1-inch (2.54 mm) adapter in place When the adapters are firmly in place on the circuit board connect the sensor tip cable to the top of the adapter while using the probe tip tripod to ease the tension off the probe tip cable and adapter.
  • Page 60: Installing The Square Pins On The Circuit Board

    Reference information Installing the square pins on the circuit board The following figure shows the recommended clearance requirements for connecting the adapters to the square pins on the circuit board. The bottoms of the adapters are shown at the top. Figure 33: Adapter clearance requirements TIVM Series Measurement System User Manual...
  • Page 61: Figure 34: Removing The Header From Square Pins On The Circuit Board

    figure. Figure 34: Removing the header from square pins on the circuit board Tektronix provides a set of solder pins (0.018-inch (0.46 mm) diameter) to install on the circuit board for use with the MMCX to 0.062-inch (1.57 mm) adapter.
  • Page 62: Figure 35: Using The Soldering Aide To Install The Square Pins On The Circuit Board

    Reference information Use the following steps to install the solder pins using the soldering aide on the circuit board: 1. Carefully insert the solder pins into the soldering aide as shown in the following illustration. Figure 35: Using the soldering aide to install the square pins on the circuit board 2.
  • Page 63: User Service

    Warranty repair service Tektronix warrants this product as described in the warranty statements at the front of this manual. Tektronix technicians provide warranty service at most Tektronix service locations worldwide. The Tektronix Web site provides information on all service locations worldwide.
  • Page 64: Performance Verification Procedures

    Table 11: Required equipment for performance verification Description Minimum requirements Example product Oscilloscope with TekVPI interface ≥ 1 GHz, 50 Ω input support, fully compatible Tektronix MDO4104C with TekVPI interface Pulse generator , <1ns risetime Tektronix Tek-DPG TIVM series 1X sensor tip cable...
  • Page 65: Propagation Delay

    User service Propagation delay This procedure verifies that the TIVM Series IsoVu measurement system is functioning and meets the warranted propagation delay specification. The propagation delay will be measured by first applying the output of the pulse generator to the input of the oscilloscope and storing the captured waveform as a reference waveform.
  • Page 66 User service Position: 0 (centered) Offset: -500 mV Deskew: 0 seconds 5. Set the Horizontal menu to the following setups: Horizontal Scale to 10 ns/div. Horizontal Position: 40 ns Acquire: Average 128 6. Set the Tek-DPG to the following setups: 0 to -1 1kHz mode (Mode 1) Output Enable: ON 7.
  • Page 67 User service 5. Set the TIVM series to the following: Range: 2X CLAMPING: Off Push the SELF CAL button to perform the self calibration (wait for the SELF CAL Status indicator to turn solid green). 6. On Channel 1 of the oscilloscope set the Vertical Scale to 200 mv/div. 7.
  • Page 68: Troubleshooting And Error Conditions

    Troubleshooting and error conditions The following table lists possible problems that you might encounter when taking measurements with TIVM Series IsoVu measurement system. Use the table as a quick troubleshooting reference before contacting Tektronix for service. Table 12: Problems and possible solutions Problem...
  • Page 69 User service Table 12: Problems and possible solutions (cont.) Problem Remedy Controller SELF CAL STATUS Remove input signal (differential must be 0.0V). indicator turns solid red after Allow system to warm up 20 minutes. pressing SELF CAL button (or never completes). Make sure the fiber cable is not subjected to dynamic mechanical or thermal stresses.
  • Page 70: Repack The Measurement System For Shipment

    (7000/70000 Series oscilloscopes) Repack the measurement system for shipment If you need to return the measurement system to Tektronix for repair, use the original packaging. If this is unavailable or not fit for use, contact your Tektronix representative to obtain new packaging.
  • Page 71: Test Record

    User service Test record Photocopy this test record for recording the results of the performance verification procedures. Table 13: Test record Model number: Certificate number: Serial number: RH %: Temperature: Technician: Date of calibration: Propagation delay Minimum Incoming Outgoing Maximum TIVM1 (3 m fiber length) 30 ns 40 ns...
  • Page 72 User service TIVM Series Measurement System User Manual...
  • Page 73: Appendix A: Remote Programming

    Appendix A: Remote programming This appendix describes commands and queries that can be sent to the sensor head when attached to a Tektronix oscilloscope. Long-form and short-form keywords are indicated with upper/lower case letters. The commands and queries are supported by most oscilloscopes; differences in supporting oscilloscopes, if any, are described with the commands.
  • Page 74: Ch:Probe:forcedrange

    Appendix A: Remote programming CH<n>:PRObe:FORCEDRange <NR3> The command selects the dynamic range of the sensor tip in V and is dependent the attached sensor tip cable. The following table lists the sensor tip cables and the dynamic range. Table 14: Sensor tip cables and dynamic ranges Sensor tip cable Range V 1.0 or 2.0...
  • Page 75: Ch:Probe:propdelay

    Appendix A: Remote programming CH<n>:PRObe:PROPDELay? Only supported by 3000/4000 Series oscilloscopes. Returns the propagation delay value (in seconds). Query only. CH<n>:PRObe:RECDESkew? Only supported by 3000/4000 Seriesoscilloscopes. Returns the recommended deskew value (in seconds). Query only. CH<n>:PRObe:RESistance? Returns the input resistance (in ohms). It depends on the attached sensor tip cable. Query only.
  • Page 76: Ch:Probefunc:extunits {"Uu" | "None

    Appendix A: Remote programming CH<n>:PROBEFunc:EXTUnits {“UU” | “None”} Only supported by 5000/7000/70000 Series oscilloscopes. The command set the user-defined units. Only two characters are displayed by the oscilloscope. Entering “None” resets the units to default. CH<n>:PROBEFunc:EXTUnits?. The query returns unless a user-defined “V”...
  • Page 77: Appendix B: Compliance Information

    Appendix B: Compliance information This section lists the Safety and Environmental standards with which the instrument complies. Safety compliance This section lists the safety standards with which the product complies and other safety compliance information. EU low voltage directive Compliance was demonstrated to the following specification as listed in the Official Journal of the European Union: Low Voltage Directive 2014/35/EU.
  • Page 78 Appendix B: Compliance information Equipment type Test and measuring equipment. Pollution degree A measure of the contaminants that could occur in the environment around and within a product. Typically the internal environment inside a product is descriptions considered to be the same as the external. Products should be used only in the environment for which they are rated.
  • Page 79: Environmental Considerations

    This symbol indicates that this product complies with the applicable European Union requirements according to Directives 2012/19/EU and 2006/66/EC on waste electrical and electronic equipment (WEEE) and batteries. For information about recycling options, check the Tektronix Web site (www.tek.com/productrecycling). TIVM Series Measurement System User Manual...
  • Page 80 Appendix B: Compliance information TIVM Series Measurement System User Manual...
  • Page 81: Index

    Index Symbols and Numbers connecting the measurement input resistance system, 11 sensor tip cables, 20 1X Range, 18 controller, x input specifications, 3 2X Range, 18 dimensions, 34 IsoVu, ix controller buttons clamping, 8 aberrations, 15, 16 menu, 7, 14 key features, ix accessories range, 7...
  • Page 82 Index standard accessories, 1 status indicator, 8 range button, 7 safety compliance, 59 supported oscilloscopes, xi range indicators, 7 safety information, v remote programming safety summary, v CH<n>:PRObe?, 55 self cal CH<n>:PRObe: AutoZero, 14 TCA-VPI50 adapter, xi FORCEDRange, 56 button, 8 test record, 53 CH<n>:PRObe:AUTOZero indicator, 8, 13...

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