Tektronix TIVM1 2,TIVM1L 2 User Manual

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TIVM Series

ZZZ

IsoVu™ Measurement System

User Manual

*P071349501*

071-3495-01

TIVM Series

ZZZ

IsoVu™ Measurement System

User Manual

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071-3495-01

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. Speciﬁcations and price change privileges reserved.

TEKTRONIX and TEK are registered trademarks of Tektronix, Inc.

ISOVU is a trademark of Tektronix Inc.

TEKVPI is a registered trademark of Tektronix, Inc.

Contacting Tektronix

Tektronix, Inc. 14150 SW Karl Braun Drive P.O. B o x 5 0 0 Beaverton, OR 97077 USA

For product information, sales, service, and technical support:

In North America, call 1-800-833-9200. Worldwide, visit www.tek.com to ﬁnd contacts in your area.

Warranty

Tektronix 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 during this warranty period, Tektronix, 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 Tektronix for warranty work may be n the property of Tektronix.

ew or reconditioned to like new performance. All replaced parts, modules and products become

In order to o the warranty period and make suitable arrangements for the performance of service. Customer shall be responsible for packaging and shipping the defective product to the service center designated by 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.

This warranty shall not apply to any defect, failure or damage caused by improper use or improper or inadequate maintenance and care. Tektronix shall not be obligated to furnish service under this warranty a) to repair damage result b) to repair damage resulting from improper use or connection to incompatible equipment; c) to repair any damage or malfunction caused by the use of non-Tektronix supplies; or d) to service a product that has b een modiﬁed or integrated with other products when the effect of such modiﬁcation or integration increases the time or difﬁculty of servicing the product.

THIS WARRANTY IS GIVEN BY TEKTRONIX WITH RESPECT TO THE PRODUCT IN LIEU OF A NY OTHER WARRANTIES, EXPRESS OR IMPLIED. TEKTRONIX AND ITS VENDORS DISCLAIM ANY IMPLIED WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE.

TRONIX' RESPONSIBILITY TO REPAIR OR REPLACE DEFECTIVE PRODUCTS IS THE SOLE

TEK AND EXCLUSIVE REMEDY PR OVIDED TO THE CUSTOMER FOR BREACH OF THIS WARRANTY. TEKTRONIX AND ITS VENDORS WILL NOT BE LIABLE FOR ANY INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES IRRESPECTIVE OF WHETHER TEKTRONIX OR THE VENDOR HAS ADVANCE NOTICE OF THE POSSIBILITY OF SUCH DAMAGES.

[W2 – 15AUG04]

btain service under this warranty, Customer must notify Tektronix of the defect before the expiration of

ing from attempts by personnel other than Tektronix representatives to install, repair or service the product;

Table of Contents

Important safety information ........... ................................ ................................ ........... v

General safety summary ...................................................................................... v

Service safety summary ............................ ................................ ......................... vii

Terms in this manual ..................... ................................ ................................ ... viii

Symbols and terms on the product......................................................................... viii

Preface .............................................................................................................. ix

Key features ........................... .................................. ................................ ...... ix

Laser certiﬁcation................. ................................ .................................. .......... ix

Product description ..... ................................ .................................. ..................... x

Models ......................................................................................................... xi

Supported oscilloscopes...................................................................................... xi

Operating information... .................................. ................................ ......................... 1

Accessories..................................................................................................... 1

Operating considerations...................................................................................... 2

Controls and indicators............................... ................................ ......................... 7

Connecting to a circuit ....... ................................ ................................ ................ 10

Self calibration ................................................................................................ 12

AutoZero....................................................................................................... 14

Menu button ............................. ................................ ................................ ...... 14

Offset correction .............................................................................................. 15

1X/2X Range.................... ................................ ................................ .............. 17

Auto Range.................................................................................................... 18

Selecting a sensor tip cable .................................................................................. 19

Output clamping .......... ................................ .................................. .................. 20

Sensor tip loading............................................................................................. 20

Probe compensation .......................................................................................... 21

Deskew......................................................................................................... 21

Input offset ...... .................................. ................................ ............................ 21

Application examples ............... ................................ ................................ .............. 23

Example 1: High-side V

Example 2: High-side drain current measurement ............................ ............................ 25

Example 3: ESD troubleshooting ............................... .................................. .......... 26

Reference information ............................................................................................ 29

Speciﬁcations...................................... ................................ ............................ 29

Dimensional drawings........................................................................................ 33

IsoVu measurement system block diagram ................ .................................. .............. 36

Tripods........... ................................ ................................ .............................. 37

Installing the probe tip adapters . .... . ..... . ..... . ..... . ..... . ... . . ..... . ..... . ..... . ..... . ... . . . .... . ..... . . 39

Installing the square pins on the circuit board . ..... . .... . . .... . ..... . ..... . ..... . .... . ..... . ..... . ..... . .. 42

measurement................................................................... 23

TIVM Series Measurement System User Manual i

Table of Contents

User service .......... ................................ .................................. ............................ 45

Service offerings ................ .................................. ................................ ............ 45

Preventive maintenance.................. ................................ .................................. .. 45

Performance veriﬁcation procedures ....................................................................... 46

Propagation delay............................................................................................. 47

Troubleshooting and error conditions .................. .................................. .................. 50

Repack the m

Test record ..................................................................................................... 53

Appendix A: Remote programming ............................................................................. 55

CH<n>:PRObe?............................................................................................... 55

CH<n>:PRObe:AUTOZero EXECute ..................................................................... 55

CH<n>:PRObe:COMMAND “CLAMP”, {“ON” | “OFF”}......................... .................... 55

CH<n>:P

CH<n>:PRObe:FORCEDRange <NR3> .................................................................. 56

CH<n>:PRObe:GAIN? .... ................................ ................................ .................. 56

CH<n>:PRObe:ID {:SERnumber | :TYPe}? ........ ................................ ...................... 56

CH<n>:PRObe:PROPDELay?............ ................................ ................................ .. 57

CH<n>:PRObe:RECDESkew?.............................................................................. 57

CH<n

CH<n>:PRObe:UNIts?........................... .................................. .......................... 57

CH<n>:PROBECOntrol {AUTO | MAN}................................................................. 57

CH<n>:PROBEFunc:EXTAtten <NR3>................................................................... 57

CH<n>:PROBEFunc:EXTDBatten? ....................................................................... 57

CH<n>:PROBEFunc:EXTUnits {“UU” | “None”}... .................................. .................. 58

pendix B: Compliance information .......................................................................... 59

Safety compliance ............................................................................................ 59

Environmental considerations............................................................................... 61

Index

easurement system for shipment ............................................................ 52

RObe:SET {“CLAMP ON” | “CLAMP OFF”}................................................ 55

>:PRObe:RESistance? ................................................................................ 57

ii TIVM Series Measurement System User Manual

List of Figures

Figure i: TIVM Series IsoVu Measurement System............................................................ x

Figure 1: Maximum safe handling limits for common mode voltages between the sensor head and earth

ground........................................................................................................... 5

Figure 2: RF burn hazard zone around the sensor head............. ................................ ........... 6

Figure 3: Controller indicators and buttons...................................................................... 7

Figure 4: Labels on the sensor head .............................................................................. 9

Figure 5: Sensor tip cable top and botto

Figure 6: Connect the Comp box to the oscilloscope.. . . ..... . ..... . .... . ..... . ..... . .... . ..... . ... . . . .... . ... 11

Figure 7: Connecting the sensor tip cable to the sensor head................................................. 11

Figure 8: Connect the s ensor head to the ﬂexible tripod ...... .................................. .............. 12

Figure 9: Probe Setup menu...................................................................................... 14

Figure 10: Digital ﬁlter aliasing ................................................................................. 15

Figure 11: Digital ﬁlter aberrations (about 2.5% of V

Figure 12: Digital ﬁlter aberrations after disabling offset correction........................................ 17

Figure 13: Top sensor tip labels.................................. ................................ ................ 17

Figure 14: Bottom sensor tip labels ............................................................................. 20

Figure 15: Half-bridge circuit showing the gate, source, and drain of the high-side FET.. . .... . ..... . ... 23

Figure 16: High-side turn-on characteristics . ................................ ................................ .. 24

Figure 17: High side current shunt .............................................................................. 25

Figure 18: SMT resistor model .................................................................................. 26

Figure 19: ESD discharge test example....................... .................................. ................ 27

Figure 20: Sensor head dimensions with probe tip cover ................... .................................. 33

Figure 21: Sensor head dimensions without probe tip cover ....... ................................ .......... 34

Figure 22: Controller dimensions................................................................................ 34

Figure 23: Comp box dimensions ............................................................................... 35

Figure 24: Probe tip adapter dimensions.................................... .................................. .. 35

Figure 25: Block diagram .................... .................................. ................................ .. 36

Figure 26: Installing the ﬂexible tripod under the DUT. ...................................................... 37

Figure 27: Connecting the sensor head to the top of the DUT with the ﬂexible tripod. ................... 37

Figure 28: Connecting to an adapter on the circuit board with the probe tip tripod ....................... 38

Figure 29: Lining up the MMCX-to-0.1-inch (2.54 mm) adapter on the circuit board.................... 39

Figure 30: Lining up the MMCX-to-0.062-inch (1.57 mm) adapter on the circuit board .... . ..... . .... . . 4 0

Figure 31: Pushing the MMCX-to-0.062-inch (1.57 mm) adapter in place................................. 40

Figure 32: Pushing the MMCX-to-0.1-inch (2.54 mm) adapter in place............................ ........ 41

Figure 33: Adapter clearance requirements ...................... ................................ .............. 42

Figure 34: Removing the header from square pins on the circuit board..................................... 43

Figure 35: Using the soldering aide to install the square pins on the circuit board ........................ 44

Figure 36: Propagation delay measurement .................................................................... 50

m labels ............................................................... 9

) ... ................................ .................. 16

p-p

TIVM Series Measurement System User Manual iii

Table of Contents

List of Tables

Table 1: Standard accessories ...... .................................. ................................ ............. 1

Table 2: Opt

Table 3: Input speciﬁcations...................... .................................. ............................... 3

Table 4: Environmental considerations .......................................................................... 3

Table 5: Controller indicators and buttons.................. ................................ ..................... 7

Table 6: Sensor tip selection table ............................................................................... 19

Table 7: Input offset............................................................................................... 21

Table 8: W

Table 9: Electrical speciﬁcations .............. ................................ .................................. 29

Table 10: Physical speciﬁcations ........ .................................. ................................ ...... 33

Table 11: Required equipment for performance veriﬁcation ................................................. 46

Table 12: Problems and possible solutions ..................................................................... 50

Table 13: Test record........................ .................................. ................................ .... 53

Table

ional accessories ..................................................................................... 2

arranted speciﬁcations.................................. ................................ .............. 29

14: Sensor tip cables and dynamic ranges ......................... .................................. .... 56

iv TIVM Series Me asurement System User Manual

Important safety information

This manual contains information and warnings that must be followed by the user for safe operation and to keep the product in a safe condition.

To safely perform service on this product, additional information is provided at the end of this section. (See page vii, Service safety summary.)

General safety summary

Use the product only as speciﬁed. Review the following safety precautions to avoid injury and prevent damage to this product or any products connected to it. Carefully read all instructions. Retain these instructions for future reference.

Comply with local and national safety codes.

For correct and safe operation of the product, it is essential that you follow generally accepted safety procedures in addition to the safety precautions speciﬁed in this manual.

The product is designed to be used by trained personnel only.

To avoid ﬁre or personal

injury

Only qualiﬁed perso the cover for repair, maintenance, or adjustment.

Before use, always check the product with a known source to be sure it is operating correctly.

This product is not intended for detection of hazardous voltages.

Use personal protective equipment to prevent shock and arc blast injury where hazardous live conductors are exposed.

While using this product, you may need to access other parts of a larger system. Read the safety sections of the other component manuals for warnings and cautions related to operating the system.

When incorporating this equipment into a system, the safety of that system is the responsibility of the assembler of the system.

Connect and disconnect properly. Do not connect or disconnect sensor tip cables, test leads, or accessories while they are connected to a voltage source. Use only test leads and accessorie to be suitable for the product.

Observe all terminal ratings. To avoid ﬁre or shock hazard, observe all ratings and markings on the product. Consult the product manual for further ratings information before making connections to the product. Do not exceed the Measurement Category (CAT) rating and voltage or current rating of the lowest rated individual component of a product or accessory.

nnel who are aware of the hazards involved should remove

s supplied w ith the product, or indicated by Tektronix

TIVM Series Measurement System User Manual v

Important safety information

Do not apply a po

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.

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. Do not use the product if it is damaged or operates incorrectly. If in doubt about safety of the product, turn it off and disconnect it from the instrument. Clearly mark the product to prevent its further operation.

Before use, inspect accessories for mechanical damage and replace when damaged. Do not use them if they are damaged, or if there is exposed metal.

Examine the exterior of the product before you use it. Look for cracks or missing pieces.

Use only speciﬁed replacement parts.

Do not operate in wet/damp conditions. Be aware that condensation may occur if a unit is moved from a cold to a warm environment.

tential that exceeds the m aximum rating.

Sensor tip cables

Do not operate in an explosive atmosphere.

Keep product surfaces clean and dry. Remove the input signals before you clean

the product.

Provide a safe working environment. Always place the product in a location convenient for viewing the display and indicators.

Be sure your work area meets applicable ergonomic standards. Consult with an ergonomics professional to avoid stress injuries.

Maintain safe clearance from the sensor head and sensor tip cable while connected to the energized circuit as recommended in this manual.

Remove the sensor tip cable and adapters from the test circuit when not in use.

Leave the sensor tip cable connected to the sensor head when not in use.

Use only correct Measurement Category (CAT), voltage, temperature, altitude, and amperage rated sensor tip cables and accessories for any measurement.

Beware of high voltages. Understand the voltage ratings for the product you are using and do not exceed those ratings. It is important to know and understand the maximum measurement voltage rating of the product. The voltage rating depends

vi TIVM Series Measurement System User Manual

Important safety information

on the me asurem Speciﬁcations section of the manual for more information.

WAR NI NG . 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.

Servicesafetysummary

The Serv safely perform service on the p roduct. Only qualiﬁed personnel should perform service procedures. Read this Service safety summary and the General safety summary before performing any service procedures.

To avoid electric shock. Do not touch exposed connections.

ent category, the instrument, and your application. Refer to the

icesafetysummarysection contains additional information required to

Do not service alone. Do not perform internal service or adjustments of this product unless another person capable of rendering ﬁrst aid and resuscitation is present.

Disconnect power. To avoid electric shock, switch off the product power and

connect the power cord from the mains power before removing any covers or

dis panels, or opening the case for servicing.

Use care when servicing with power on. Dangerous voltages or currents may exist in this product. Disconnect power, remove battery (if applicable), and disconnect test leads before removing protective panels, soldering, or replacing components.

Verify safety after repair. Always recheck ground continuity and mains dielectric strength after performing a repair.

TIVM Series Measurement System User Manual vii

Important safety information

Termsinthismanual

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.

Isolated, electrically ﬂoating. The terms isolated, electrically ﬂoating,and galvanically isolated are used in this document to indicate a measurement where

there is no direct conduction path to earth ground.

Symbols and terms on the product

These terms may appear on the product:

DANGER indicates an injury hazard immediately accessible as you read the marking.

WARNING indicates an injury hazard not immediately acc essible as you read the marking.

CAUTION indicates a hazard to property including the product.

this symbol is marked on the product, be sure to consult the manual

When to ﬁnd out the nature of the potential hazards and any actions which have to betakentoavoidthem. (Thissymbolmayalsobeusedtorefertheuserto

ings in the manual.)

rat

The following symbol(s) may appear on the product:

viii TIVM Series Measurement System User Manual

Preface

Key features

Laser certiﬁcation

This documen Series IsoVu Mea surement 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 p erformance across its bandwidth.

New IsoVu technology - galvanically isolated, ﬂoating, measurement system

Differential voltages up to ±50 Vpk (depending on sensor tip)

Large common mode voltage range up to 60 kV peak

t provides information for installing and using the Tektronix TIVM

Bandwidth from DC to 1 GHz

> 120 dB (1 million to 1 common mode rejection ratio) from DC to

100 MHz and 80 dB (10,000 to 1) at 1 GHz

This product complies with 21 CFR 1040.10 and 1040.11 except for deviations

suant to Laser Notice No. 50, dated June 24, 2007.

pur

CAUTION. Useofcontrolsoradjustmentsforperformanceofproceduresother

than those speciﬁed herein may result in hazardous radiation exposure.

TIVM Series Measurement System User Manual ix

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 con

troller and oscilloscope by optical ﬁber cables.

Figure i: TIVM Series IsoVu Measurement System

Comp box

Controller

x TIVM Series Measurement System User Manual

The TekVPI compensation box (Comp box) connects the measurement system to one of the input channels on the oscilloscope. Power is supplied to the

asurement system through the TekVPI interface of the oscilloscope.

The controller connects to the oscilloscope through a coaxial cable and the Comp box. Buttons and indicators on the controller provide a means for controlling the

easurement system and indicating the overall status.

Preface

Models

Sensor head

Sensor tip cables

The sensor head the controller. It contains an electro-optic converter that converts the electrical signal from the sensor tip cables to an optical signal sent to the controller.

Different se the DUT. The sensor tip cable consists of an SMA connector that connects to the sensor head; two screws to secure the sensor tip cable to the sensor head; the other end of the sensor tip cable connects to the DUT through an MMCX connector and optional adapters.

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

TIVM05

TIVM02. Tektronix IsoVu 200 MHz Medium Voltage with 3 m cable

provides an interface between the device-under-test (DUT) and

nsor tip cables are available to connect the measurement system to

L. Tektronix IsoVu 500 MHz Medium Voltage with 10 m cable

Supp

orted oscilloscopes

The measurement system can be used with the following Tektronix oscilloscopes. For oscilloscopes not included in this list, contact your local Tektronix rep

In addition to the above oscilloscopes, the measurement system can also be used with the following oscilloscopes with a TCA-VPI50 adapter.

TIVM02L. Tektronix IsoVu 200 MHz Medium Voltage with 10 m cable

resentative.

MDO3000 series

MSO/DPO4000B serie s

MDO4000B/C series

MSO/DPO5000B serie s

DPO7000C series

MSO/DPO70000C series

MSO/DPO70000DX series

DPO70000SX series

TIVM Series Measurement System User Manual xi

Preface

xii TIVM Series Measurement System User Manual

Operating information

Accessories

This section lists the standard and optional accessories available for the measurement s ystem.

Standard ac

cessories

Table 1: Standard accessories

Tektronix

Accessory

IsoVu product carrying case, soft case

IsoVu accessories carrying case, soft case

Solder aid for 0.062-inch (1.57 mm) pitch square pins (0.016 - 0.018-inch (0.4 - 0.46 mm) square pin installation tool)

5X Sensor tip cable

25X Sensor tip cable

5/16-inch SMA wrench/driver tool

Probe tip adapter (blue), MMCX to 0.1-inch (2.54 mm) square pin (0.025-inch (0.635 mm) square pins)

Probe tip adapter (white), MMCX to 0.062-inch (1.57 mm) square pin (0.016

- 0 .018-inch (0.4 - 0.46 mm) square pins)

DUT Interface pin kit with (qty. 20) 0.018-inch (0.46 mm) round solder-in pins

Flexible tripod with quick release 352-1171-xx

Flexible tripod feet, 3 each

Probe tip tripod support with living h inge, 2 each 352-1170-xx

Certiﬁcate of traceable calibration

Data calibration report

part number

016-2108-xx

016-2110-xx

003-1946-xx

IVTIP5X

IVTIP25X

003-1947-xx

131-9717-xx

131-9677-xx

020-3169-xx

344-0693-xx

—

TIVM Series Measurement System User Manual 1

Operating information

Optional accessories

Additional acc following table lists the optional accessories.

Table 2: Optional accessories

Accessory

1X Sensor tip cable

10X Sensor tip cable

50X Sensor tip cable

Operating considerations

Read this operating requirements and clearance requirements including possible hazardous areas when the measurement system is connected to the DUT.

Measurement system

handling best practices

The mea to avoid damage or degrading the performance due to mishandling. Consider the following precautions when handling the ﬁber-optic cables and sensor tip cables:

essories, such as other sensor tip cables are available. The

Tektronix part number

IVTIP1X

IVTIP10X

IVTIP50X

section before i nstalling your measurement system to be aware of the

surement system consists of quality parts and should be tre ated with care

Do not crush, crimp, or sharply bend the ﬁber-optic cable. Avoid making loops in the ﬁber-optic cable smaller than 5 inches (12.7 cm).

Do not twist the ﬁber-optic cable; twisting the cable will stress the optical ﬁbers.

Do not allow kinks or knots to develop in the ﬁber-optic cable.

id putting tension on the ﬁber-optic cable.

Avo

Do not pull or jerk the ﬁber-optic cable, especially when kinks or knots are

esent.

Do not drop the sensor head or controller assembly since damage and

isalignment of the internal optical components can result.

Avoid over-bending the sensor tip cables; do not exceed the minimum bend radius of 2.0 inches (5.1 cm).

Avoid crushing the cables by accidentally running over the cable with a chair wheel or by dropping a heavy object onto the cable.

Never support the weight of the sensor head or controller by the ﬁber-optic cable.

Store the measurement system in the supplied carrying case when not in use.

2 TIVM Series Measurement System User Manual

Operating information

Environmental

requirements

The following t

ables describe speciﬁcations and maximum operating environmental ratings for the measurement system when connected to a DUT and a Tektronix oscilloscope.

Table 3: Input speciﬁcations

Feature Description

Common mode

Differential mode Sensor tip cable dependent (See the Sensor tip cable voltage

This product is designed to be used in the circuit with expected transient overvoltage up to 5000 V peak.

60 kV peak

rating below.)

Table 4: Environmental considerations

Feature Description

Temperature

Controller

Operating 0 °C to 40 °C (32 °F to 104 °F)

Non-operating

Sensor head

Operating 0 °C to 70 °C (32 °F to 158 °F)

Non-operating

Sensor tip cables/adapters

Operating and non-operating

Humidity

Controller

Operating 5% to 85% RH (Relative H umidity), at up to 40 °C (104 °F),

Non operating

Sensor head

Operating 5% to 80% RH (Relative Humidity), at up to 40 °C (104 °F)

Non operating

-40°Cto70°C(-40°Fto158°F)

-40°Cto85°C(-40°Fto185°F)

non-condensing

5% to 85% RH (Relative Humidity), at up to 40 °C (104 °F)

5% to 45 % RH above 40 °C (104 °F) up to 70 °C (158 °F), non-condensing

5% to 85% RH (Relative Humidity), at up to 40 °C (104 °F)

5% to 45 % RH above 40 °C (104 °F) up to 70 °C (158 °F), non-condensing

TIVM Series Measurement System User Manual 3

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

Altitude

Operating 3000 m (9843 ft.)

Non operating

5% to 85% RH (Relative Humidity), at up to 40 °C (104 °F)

5% to 45 % RH above 40 °C (104 °F) up to 70 °C (158 °F), non-condensing

12,000 m (39370 ft.)

Cleara

nce requirements

The unique common mode voltage range of the measurement system allows it to be used in the presence of high frequency/high voltage common mode signals. It is important to observe all precautions while using this product.

ING. RF burns can occur while using this measurement system. The system

WARN

is intended to isolate the operator from hazardous input voltages (common voltages);the plastic case of the sensor head and the shield on the sensor tip cable do not supply safe isolation.

Maintain the safe clearance from the sensor head and sensor tip cable while the measurement system is connected to the energized circuit as recommended in this document. (See Figure 2 on page 6.) Do not access the RF Burn Hazard Zone while taking measurements on a live circuit.

WARNING. RF burns can occur while using this measurement system. Anyone

making measurements that might come within the RF burn regions indicated in the following ﬁgure should be familiar with the hazards of working with signals in these regions and take appropriate action, such as RF shielding for the DUT.

4 TIVM Series Measurement System User Manual

Operating information

While measurin 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. Measuring common mode signals within the dark gray shaded area can result in RF burns when within 1 m (40 in.) of the sensor head.

Figure 1: Maximum safe handling limits for common mode voltages between the sensor head and earth ground.

g high frequency common mode signals, there is a risk of

TIVM Series Measurement System User Manual 5

Operating information

The following ﬁ potential RF burn area when working with hazardous voltages.

gure shows the components of the measurement system and the

Figure 2: RF burn hazard zone around the sensor head

6 TIVM Series Measurement System User Manual

Operating information

Controls and i

Controller

ndicators

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

OVERRANGE 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 speci ﬁed input voltage levels.

RANGE indicator. The two LEDs indicate the differential input range setting.

RANGE button. Push this button to toggle between one of two differential input voltage ranges.

MENU button. Push this button to view the Probe Control menu on the oscilloscope display.

TIVM Series Measurement System User Manual 7

Operating information

Table 5: C ontroller indicators and buttons (cont.)

Item Description

CLAMPING indicator. This LED indicates whether the output clamping is enabled.

CLAMPING button. Push this button to enable or disable the output clamping feature.

SELF CAL indicator. This LED indicates the self calibration status.

Solid green. The self calibration has passed.

Flashing orange. The self calibration is in progress.

Solid red. The self calibration has failed.

Solid Orange. The self calibration has not been run or is questionable.

SELF CAL button. Push this button to start the self calibration routine.

STATUS indicator. This LED indicates the status of the measurement system:

Solid green. The unit has powered on and passed the power-on self

tests and is in normal operation.

Flashing green. The unit has not completed the power-up sequence. This is typically due to a communication fault between the host oscilloscope and the IsoVu unit. Disconnect the TekVPI comp box and then reattach the comp box.

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.

8 TIVM Series Measurement System User Manual

Operating information

Sensor head

Sensor tip cables

Labels on the se the DUT. They also provide reminders of the potential RF burn hazards while connected to the DUT.

Figure 4: Labels on the sensor head

Each sensor tip cable has a set of labels on the top and bottom. The top labels provide reminders of the maximum differential input voltage range for each tip cable. The bottom labels include the name of the tip cable and the differential input resistance and capacitance for the tip cable (differential loading).

nsor head provide h igh-level speciﬁcations for connecting to

Figure 5: Sensor tip cable top and bottom labels

TIVM Series Measurement System User Manual 9

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.

WARNING. Do not connect the measurement system to an energized circuit to

avoid the risk of shock. Always de-energize the circuit-under-test before installing or removing the tip cable from the circuit-under-test. The plastic case of the sensor head and the shield tip of the sensor cable do not supply the isolation.

WARNING. To avoid the risk of electrical shock or RF burns while the DUT

is energized, do not touch the sensor head or sensor tip cable while taking measur the measurement. (See Figure 2 on page 6.)

Be sure the RF burn hazard zone. (See Figure 1 on page 5.)

ements.Alwayskeepa1m(40in.) clearancefromthesensorheadduring

to check the maximum ratings and derating curve for more information on

ION. To avoid possible damage to the equipment, do not connect the coaxial

CAUT

(common) shield of the sensor tip cable or SMA input to the high impedance portion of a circuit. The additional capacitance can cause circuit damage. Connect the coaxial (common) shield to the low impedance section of the circuit.

NOTE. Touching the sensor head or sensor tip cable when measuring a high

frequency, high voltage common mode signal increases the capacitive coupling and can degrade the common mode loading on the circuit-under-test.

WARNING. To prevent the arc ﬂash caused by a different potential, do not place

the sensor head or sensor tip cable on the circuit that has the different voltage.

10 TIVM Series Measurement System User Manual

Operating information

The following s between a Tektronix oscilloscope and the DUT.

1. Verify the DUT

2. Connect the Comp box to one of the channels on the oscilloscope.

Figure 6: Connect the Comp box to the oscilloscope

3. Refer to the following ﬁgure and install the sensor tip cable to the sensor head.

a. Line up the sensor tip cable with the sensor head.

teps describe the process for connecting the measurement system

is not connected to an energized circuit.

Take care to avoid bending or twisting the sensor tip cable assembly during this process.

b. Connect the SMA connector of the sensor tip cable to the sensor head.

Use the accessories wrench to tighten the SMA cable to 4 to 5-in lbs.

Use the adjustment tool that was shipped with your system.

c. Pres

s the sensor tip cable housing against the sensor head and then tighten

the two screws to 3 to 5-in lbs.

the adjustment tool that was shipped with your system.

Use

Figure 7: Connecting the sensor tip cable to the sensor head

TIVM Series Measurement System User Manual 11

Operating information

4. Connect the sen

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.

NOTE. Thematingthreadinthese

support, make s ure that mating thread is UNC¼-20.

Figure 8: Connect the sensor head to the ﬂexible tripod

sor head to the ﬂexible tripod or a similar support.

nsor head is UNC¼-20. If you use a different

Self calibration

NOTE. To obtain the most accurate measurement, allow the measurement system

to warm up for 20 minutes. Then perform the se the tip cable to the DUT and taking the measurement.

5. Connect the MMCX end, of the sensor tip cabl the DUT or to a square pin adapter on the DUT. The adapters connect to square pins with either 0.100-inch (2.54 mm) spacing or 0.062-inch (1.57 mm) spacing. (See Figure 28 on page 38.)

6. Set up the controls on the oscilloscope.

7. Apply power to the DUT to take the measurement.

Press the SELF CAL button on the controller to adjust the operating point of the measurement system for the current range and clamp setting. (This function is not available in the Probe Setup menu of the oscilloscope.)

NOTE. Make sure there is no differential voltage present at the sensor tip cable

when performing the self calibration.

lf calibration before connecting

e to an MMCX connector on

12 TIVM Series Measurement System User Manual

Operating information

Programming

When you power o 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. The SELF CAL sequence should always be run on the system after it is ﬁrst powered on and has warmed up for 20 minutes. After pushing the SELF CAL button, the indicator blinks orange during the self calibratio red when the operation fails.

There are s status indicator turns orange to indicate when this is necessary:

Users wanting to initiate the self calibration through the programmatic interface must conﬁgure the measurement system to perform a self calibration every time it receives the AutoZero command. To link these functions, hold the MENU button down and momentarily press the SELF CAL button. The OVERRANGE indicator should blink red twice. This mode is non-volatile, and it also changes the Restore the original operation by repeating the MENU-SELF CAL button pushes. In this case the OVERRANGE indicator will blink once.

n process; it turns solid green when the operation completes or solid

ituations when further self calibration is required. The SELF CAL

The measu

Changes are made to the range (1X|2X) or clamp (ON|OFF) setting.

The temperature in the sensor head changes more than 10 °C.

The internal compensation adjustments have shifted outside their normal operating ranges.

The sensor tip cable is changed.

operation of the AutoZero button in the Probe Setup menu of the oscilloscope.

n the measurement system, the SELF CAL status indicator on

rement system is ﬁrst attached to the oscilloscope.

TIVM Series Measurement System User Manual 13

Operating information

AutoZero

Menu button

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. Make sure there is no differential signal pres

ent at the sensor tip cable.

Press the M oscilloscope, similar to the following ﬁgure.

Figure 9: Probe Setup menu

ENU button on the controller to view the Probe Setup menu on the

Use the buttons on the oscilloscope to change the probe setups. Some of the functions are the same as pushing the buttons on the controller, such as turning clamping on or off, or setting the input ranges.

14 TIVM Series Measurement System User Manual

Operating information

Offset correc

tion

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 rejecti be obscured by the h igh common mode interference.

The TIVM Ser any drift in the system due to changes in temperature or ﬁber movement. The offset correction algorithm maintains a constant DC level for the displayed on-screen signal.

One of the components used for offset correction is a digital low-pass ﬁlter. Normally, the frequency of the signal is high enough that the operation of the ﬁlter is transparent. However, at low frequencies special care must be taken to prevent aberrations from being introduced.

When attempting to capture a signal that has a frequency near 43.5 Hz, 87.0 Hz, or

130.5 Hz, the display might show aliasing. If you cannot avoid these frequencies, the off selected to not alias at 50 Hz or 60 Hz.

on ratio (CMRR) and lets you see small signals that would otherwise

ies products implement a n offset correction algorithm to minimize

set correction should be disabled. The sample rate of the digital ﬁlter was

Figure 10: Digital ﬁlter aliasing

To disable the offset correction algorithm, hold down the MENU button on the controller and momentarily press the CLAMPING button. The OVERRANGE indicator on the controller should blink two times. To re-enable the correction, repeat the operation; the OVERRANGE indicator should blink once. Turning off the correction is temporary; when the measurement system is removed/re-attached, the offset correction is re-enabled.

TIVM Series Measurement System User Manual 15

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

p-p

also created by the digital ﬁlter.

Figure 11: Digital ﬁlter aberrations (about 2.5% of V

p-p

)

The following ﬁgure shows the aberrations after the offset correction has been disabled. When the offset correction is disabled, the system no longer corrects for long-term drift due to temperature change and ﬁber movement.

16 TIVM Series Measurement System User Manual

Operating information

1X/2X Range

Figure 12

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 s ensor tip labels

: Digital ﬁlter aberrations after disabling offset correction

TIVM Series Measurement System User Manual 17

Operating information

Auto Rang

For example, th

e IVTIP5X tip has a dynamic range of 5 V

when the 1X Range

p-p

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). Refer to the Linear differential input voltage range in the

p-p

speciﬁcations table for more information.

CAUTION. To avoid damaging the probe, do NOT exceed either the RMS OR

Peak Voltag

e ratings. The Maximum Non-Destruct Voltage limits (RMS and Peak Vo ltage) do not increase when the 2X Range is selected. For the IVTIP5X, the 12 V

and ±21.5 Vpklimits are the same for the 1X or 2X Range.

rms

By default, the MSO/DPO5000, DPO7000, and MSO/DPO70000 Series Oscilloscopes select the 1X or 2X Range automatically when you change the V/div se However, there are combinations of Range and V/div settings that cannot be reached when Auto Range is selected. For these situations, select Manual Range when full ﬂexibility is desired.

tting. This hides the complexity of selecting the range from casual users.

18 TIVM Series Measurement System User Manual

Operating information

Selecting a se

nsor 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. Select the sensor tip cable that will p This also provides the highest differential impedance to the circuit-under-test.

When sele following questions:

What is t (for example, under a fault condition)?

What is can tolerate?

How la

What sensitivity do I need (for example, the minimum V/div setting)?

The following table will help you select the correct sensor tip. Start at the top of the table and work down. Choose the ﬁrst tip that meets all of your criteria.

rovide the highest attenuation possible for the signal being measured.

cting a sensor tip cable for a particular application, consider the

he maximum RMS/Peak Voltage at the test point being measured

the minimum differential loading (input resistance) that my circuit

rge of a signal do I want to display at one time on the oscilloscope?

le 6: Sensor tip selection table

Tab

Most sensitive

Sensor tip

IVTIP50X

IVTIP25X

IVTIP10X

IVTIP5X

IVTIP1X

On 1X range

On 2X range

V/div setting

50 mV/div ±50 V (100 V

25mV/div ±25V(50V

10mV/div ±10V(20V

5 m V/div ±5 V (10 V

1 mV/div ±1 V (2 V

Differential input speciﬁcations

imum

Max

)

non-destruct voltage (RMS)

35 V

rms

25 V

rms

16 V

rms

12 V

rms

range

p-p

)

p-p

)

p-p

)

p-p

)

p-p

Linear voltage

imum

Max non-destruct voltage (Peak)

200 Vpk

107.5 Vpk

43 Vpk

21.5 Vpk

4.3 Vpk

Differential input resistance

2.5 k

1.25 k

500 

250 

50 

TIVM Series Measurement System User Manual 19

Operating information

Output clampi

Sensor tip loading

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 (ind the measurement system into the oscilloscope input. It allows you to increase the vertical sensitivity without over-driving or saturating the oscilloscope input.

Each of the sensor tip cables (IVTIP1X, IVTIP5X, IVTIP10X, IVTIP25X, IVTIP50X) has a differential input resistance listed on the bottom labels as shown in the following ﬁgure.

icator is on), the output clamping limits the output voltage swing of

Figure 14: Bottom sensor tip labels

It is important to understand the impact of the tip loading on the DUT. For

mple, the IVTIP5X tip has a differential input resistance of 250 Ω.Ifyou

exa choose the IVTIP25X tip, the differential input resistance increases to 1.25 kΩ. Refer to the Input resistance/capacitance section in the speciﬁcations table for more information. The sensor tip cables are specially designed to act as a common mode choke that helps reduce the common mode loading.

NOTE. The coaxial (common) shield of the sensor tip cable should always be

onnected to the lowest impedance point (usually a circuit common or power

c supply rail) in the circuit-under-test (relative to the sensor tip cable/center conductor) to obtain the most accurate waveform.

20 TIVM Series Measurement System User Manual

Probe compensation

Deskew

Operating information

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 though the Compensate Probe feature fails.

Each oscilloscope family has a unique way of allowing you to adjust the timing relationship between signals acquired between different probes. Consult the user manual or online help o f the oscilloscope for speciﬁc directions needed to deskew the probe. The 3 m and 10 m measurement systems have a propagation delay of approximately 35 ns and 68 ns respectively. The actual propagation delay is measur

the TIVM system is still guaranteed on these oscilloscopes even

ed on each measurement system and is stored within each unit.

Input offset

The me This allows you to view a portion of the signal that is off-screen. One of the controls on the oscilloscope can be assigned this function.

The minimum/maximum offset is different for each sensor tip cable. It is the same when the 1X or 2X Range is selected; it is also the same for all V/div settings. Refer the following input offset table.

Table 7: Input offset

IVTIP1X ±2 V

IVTIP5X ±10 V

VTIP10X

IVTIP25X ±50 V

IVTIP50X ±100 V

asurement system provides a user-adjustable, input referred offset voltage.

nsor tip cable

put offset voltage

20 V

TIVM Series Measurement System User Manual 21

Operating information

22 TIVM Series Measurement System User Manual

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: H

igh-side V

measurement

Advancements in the components used in switching power supplies have made characterizing the performance of these power supplies increasingly difﬁcult and challengi V

good CMRR is required from the test system. The following ﬁgure shows an example of this circuit.

Figure 15: Half-bridge circuit showing the gate, source, and drain of the high-side FET

ng. A particularly challenging measurement is measuring the high-side

in a half bridge. To accurately make this measurement, an exceptionally

In this type of circuit, the gate-source voltage is of interest because the rate at which the device switches is determined by the gate drive characteristics. The reference node for this measurement is the high-side source node, which switches

tween the input supply voltage and the local PCB ground during operation. In a

be measurement system without sufﬁcient CMRR, this rapidly changing common mode voltage results in interference which obscures the measurement. It is important to note that the CMRR for all measurement systems is frequency dependent; however, the frequency that is critical for this measurement is not the switching frequency, but the frequency corresponding to the edge rate. For example, to accurately characteriz e a power supply with a switching frequency of 100 kHz and an edge rate of 1 ns, a system with good CMRR at 350 Mhz is necessary because of the edge speed.

TIVM Series Measurement System User Manual 23

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

p-p

the signal is fully resolved and is within the dynamic range of the measurement system.

To get the best CMRR from your TIVM Series IsoVu measurement system, pay careful attention when connecting the measurement system to the DUT. This connection should preserve the signal ﬁdelity and shield the signal from unwanted interfere

nce. To achieve the best performance from the measurement system, use an MMCX connector as close to the test point as possible. The MMCX connectors are available from a number of vendors and are relatively inexpensive. The key attributes of these connectors, which make them excel for this application, are their compact footprint and solid metal body. The solid metal body and gold contacts provide a w ell-shielded signal path.

The IsoVu input provides a ﬂoating differential measurement with differential input resistance from 50 Ω to 2.5 kΩ, depending on the tip attenuation. In the VGS mea

surement example the 10X tip with a 500 Ω input impedance is used. The common mode resistance is extremely high, greater than G Ω, in parallel with a small capacitance from the tip cable shield to ground, typically 2 pF or less. Keep these impedances in mind when determining how to connect the measurement system to the DUT. The source node in the h alf bridge circuit is a very low impedance point, and is the point that should be used to drive the tip

e shield capacitance. The gate driver output, which is also a low impedance

cabl node (but not as low impedance as the source), should be used to drive the center contact of the sensor tip cable. The input impedance of the sensor tip cable for the 10X tip is 500 Ω relative to the shield – not to ground.

An example of a measurement that is possible with IsoVu is measuring the high-side turn-on characteristics shown in the following ﬁgure.

Figure 16: High-side turn-on characteristics

24 TIVM Series Measurement System User Manual

Application examples

Exampl

In general ther

e a re three characteristic regions of interest of the turn-on waveform

(See Figure 16.):

The ﬁrst regio

nistheC

charge time.

The second region is the Miller Plateau (the time required to charge the gate-drain increases as V

The third re

Miller capacitance (C

increases.

gion occurs when the channel is in conduction and the gate

chargesuptoitsﬁnal value.

Due to the r

apid rise of the voltage on the switch node during the high side turn-on, there can be very high frequency and high amplitude common mode voltage changes during the transition. If this common mode voltage transient is not rejected, then the measurement of the high-side V not possible.

e 2: High-side drain current measurement

Current sensing is a critical measurement in many applications. Using the half bridge circuit again as an example, measuring the high-side drain current, I

y challenging particularly during startup. At startup, there can be common

be ver mode voltage transients due to parasitic inductance in the supply leads in addition to large current swings. Inserting a conventional current probe into the circuit at this point would require adding excessive inductance, which might limit circuit performance. Using a small value resistor as a current shunt makes it possible to take very high frequency current measurements with minimal additional

edance in the drain connection. (See Figure 17.)

imp

), and is VDSdependent. The charge time

during the transition is

,can

Figure 17: High side current shunt

TIVM Series Measurement System User Manual 25

Application examples

In a typical app 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.

Figure 18: SMT resistor model

Go to http://www.vishay.com/docs/60107/freqresp.pdf for models of different types o

In general, surface mount resistors have fairly low power ratings; care must be take Several vendors make very high power parts that can be used when high power dissipation is required. For example, the RP0402CB-R500FN-2Q from Barry Industries (http://www.barryind.com/)isa1.0W,0.5Ω 0402 resistor on an AIN substrate, or the RP0402CB-R500FN-2Q from US Microwaves (http://www.usmicrowaves.com/)isa1.5W,1Ω resistor on a BeO substrate.

f surface mount resistors.

n not to exceed these ratings when using them as current shunts.

lication, a 0.25 Ω resistor might be used to measure a transient

Example 3: ESD troubleshooting

Many devices and systems can be negatively affected by ESD discharges.

oubleshooting problems that occur during an ESD discharge can be very

Tr difﬁcult. A piece of test equipment connected to a device undergoing ESD testing has to not only withstand the ESD discharge, but it also has to reject interference caused by the rapid changes in potential on the DUT during an ESD discharge test.

For example, consider using the standard human body model of 100 pF and 1500 Ω. If the DUT is being tested to 4 kV and has a capacitance of 50 pF, the test equipment will be exposed to a voltage change of more than 1 kV in tens of nanoseconds.

26 TIVM Series Measurement System User Manual

Application examples

Figure 19: ESD discharge test example

In this example, if it is suspected that there is a glitch on the communication bus betwee 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; the communication bus can be monitored throughout the ESD discharge and any irregularities can be investigated without interference from the ESD discharge.

n two devices during the ESD discharge, then it is helpful to connect to

TIVM Series Measurement System User Manual 27

Application examples

28 TIVM Series Measurement System User Manual

Reference information

Speciﬁcation

Table 8: Warranted speciﬁcations

Characteristic Description

Propagation delay (Warranted) 3 m ﬁber length: 35 ns ±5 ns (actual propagation delay is measured and stored within each unit)

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.

The instrument must have had a warm-up period of at least 20 minutes.

The measurement system is powered from a TekVPI compatible oscilloscope.

Warranted speciﬁcations describe guaranteed performance with tolerance limits or certain type-tested requirements.

The performance veriﬁcation procedures for the Propagation delay are listed later in this document. (See page 47, Propagation delay.)

10 m ﬁber length: 68 ns ±7 ns (actual propagation delay is measured and stored within each unit)

le 9: Electrical speciﬁcations

Tab

Characteristic Description

Controller output termination

Controller output coupling DC coupled

Range attenuation

Terminate the controller output into 50 

Sensor tip cable/adapter

Sensor head input SMA 1X (÷1) 2X (÷2)

IVTIP1X, 1X Sensor tip cable 1X (÷1) 2X (÷2)

IVTIP5X, 5X Sensor tip cable 5X (÷5) 10X (÷10)

IVTIP10X, 10X Sensor tip cable 10X (÷10) 20X (÷20)

IVTIP25X, 25X Sensor tip cable 25X (÷25) 50X (÷50)

IVTIP50X, 50X Sensor tip cable 50X (÷50) 100X (÷100)

1X range 2X range

TIVM Series Measurement System User Manual 29

Reference information

Table 9: Electrical speciﬁcations (cont.)

Characteristic Description

Input resistance/capacitance (attached to sensor head, 50  termination), (Ty pical)

Maximum non-destructive differential input voltage range, (Typical)

CAUTION. To avoid

damaging the measurement system, be aware of the input voltage limits; this speciﬁcation applies to both the 1X Range and 2X Range.

Linear differential input voltage range, (Typical)

Output clamping range

(Input referred)

(Typ ical)

Output clamping overdrive recovery (Typical)

Sensor tip cable/adapter

Sensor head input SMA 50  ±2%

IVTIP1X, 1X Sensor tip cable 50 

IVTIP5X, 5X Sensor tip cable 250 

IVTIP10X, 10X Sensor tip cable 500 

IVTIP25X, 25X Sensor tip cable 1.25 k

IVTIP50X, 50X Sensor tip cable 2.5 k

Sensor tip cable/adapter

Sensor head input SMA

IVTIP1X, 1X Sensor tip cable

IVTIP5X, 5X Sensor tip cable

IVTIP10X, 10X Sensor tip cable

IVTIP25X, 25X Sensor tip cable

IVTIP50X, 50X Sensor tip cable

Sensor tip cable/adapter

Sensor head input SMA

IVTIP1X, 1X Sensor tip cable

IVTIP5X, 5X Sensor tip cable

IVTIP10X, 10X Sensor tip cable

IVTIP25X, 25X Sensor tip cable

IVTIP50X, 50X Sensor tip cable

Sensor tip cable/adapter Clamping on,

Sensor head input SMA

IVTIP1X, 1X Sensor tip cable

IVTIP5X, 5X Sensor tip cable

IVTIP10X, 10X Sensor tip cable

IVTIP25X, 25X Sensor tip cable

IVTIP50X, 50X Sensor tip cable

<20ns

Resistance

rms

3 V 4.3 Vpk

12 V 21.5 Vpk

16 V 43 Vpk

25 V 107.5 Vpk

35 V 200 Vpk

Clamping Off, 1X Range

±V peak (DC + peak AC)

±0.5 V ±1 V

±2.5 V ±5 V

±5 V ±10 V

±12.5 V ±25 V

±25 V ±50 V

1X Range

± 100 mV ± 200 mV

± 500 mV ± 1 V

±1V ±2V

±2.5V ±5V

±5V ±10V

Capacitance

< 1pF

V peak

Clamping Off, 2X Range

±V peak (DC + peak AC)

Clamping on, 2X Range

30 TIVM Series Measurement System User Manual

Table 9: Electrical speciﬁcations (cont.)

Characteristic Description

System noise

(Typ ical)

DC gain accuracy1, (Input referred) (Typical)

Differential DC gain accuracy

80% to 100% of full scale in 2X Range:

DC offset error voltage

(Input referred)

(Typ ical)

Input offset voltage range (Typ ical)

Input offset voltage accuracy (Typical)

Small signal rise time (10% to 90%) (Typical)

(SMA input and with sensor tip cables)

Small signal frequency response

(Typ ical)

(SMA input and with sensor tip cables)

1 GHz system noise (input referred)

Sensor tip cable/adapter

Sensor head input SMA

IVTIP1X, 1X Sensor tip cable

IVTIP5X, 5X Sensor tip cable

IVTIP10X, 10X Sensor tip cable

IVTIP25X, 25X Sensor tip cable

IVTIP50X, 50X Sensor tip cable

±3% ± DC offset error voltage ± input offset accuracy error

±5% ± DC offset error voltage ± input offset accuracy error

Sensor tip cable/adapter

Sensor head input SMA

IVTIP1X, 1X Sensor tip cable

IVTIP5X, 5X Sensor tip cable

IVTIP10X, 10X Sensor tip cable

IVTIP25X, 25X Sensor tip cable

IVTIP50X, 50X Sensor tip cable

Sensor tip cable/adapter Input offset voltage range

Sensor head input SMA

IVTIP1X, 1X Sensor tip cable

IVTIP5X, 5X Sensor tip cable

IVTIP10X, 10X Sensor tip cable

IVTIP25X, 25X Sensor tip cable

IVTIP50X, 50X Sensor tip cable

±5%

TIVM1/TIVM1L

TIVM05/TIVM05L

TIVM02/TIVM02L

TIVM1/TIVM1L DC to  1GHz

TIVM05/TIVM05L DC to  500 MHz

TIVM02/TIVM02L DC to  200 MHz

1X Range 2X Range

<0.8mV

<4mV

rms

<8mV

rms

<20mV

<40mV

rms

<1.6mV

<8mV

rms

<16mV

<40mV

<80mV

1X Range 2X Range

±2 mV ±4 mV

±10 m V ±20 mV

±20 m V ±40 mV

±50 m V ±100 mV

±100 mV ±200 mV

±2 V

±10 V

±20 V

±50 V

±100 V

Rise time

 350 ps

 700 ps

 1.8 ns

-3 dB bandwidth

Reference information

rms

TIVM Series Measurement System User Manual 31

Reference information

Table 9: Electrical speciﬁcations (cont.)

Characteristic Description

Common mode rejection ratio (Typical)

Sensor tip cable/adapter DC

IVTIP1X, 1X Sensor tip

> 120 dB 120 dB 110 dB 100 dB 90 dB

cable

IVTIP5X, 5X Sensor tip

> 120 dB 120 dB 110 dB 100 dB 90 dB

cable

IVTIP10X, 10X Sensor

> 120 dB 120 dB 110 dB 100 dB 90 dB

tip cable

IVTIP25X, 25X Sensor

> 120 dB 110 dB 100 dB 100 dB 90 dB

tip cable

IVTIP50X, 50X Sensor

> 120 dB 100 dB 90 dB 90 dB 80 dB

tip cable

MMCX-to 0.1 in

> 120 dB 70 dB 60 dB 40 dB 30 dB (2.54 mm) square pin adapter with sensor tip cable.

MMCX-to 0.062 in

> 120 dB 70 dB 60 dB 40 dB 30 dB (1.57 mm) square pin adapter with sensor tip cable.

Common mode voltage

60 kV peak

range

Common mode resistance

N.A. due to Galvanically isolation (ﬁber optic connection)

(Typ ical)

Common mode capacitance

~2 pF

(Typ ical)

Overload indicator range

(Typ ical)

Sensor tip cable/adapter Overload indicator On

Sensor head input SMA

IVTIP1X, 1X Sensor tip cable

IVTIP5X, 5X Sensor tip cable

IVTIP10X, 10X Sensor tip cable

IVTIP25X, 25X Sensor tip cable

IVTIP50X, 50X Sensor tip cable

The difference between the measured DC gain and the nominal DC gain, divided by the nominal DC gain and expressed as a percent.

The input referred offset error voltage when the input is shorted and the probe input offset is set to 0 volts

This product is designed to be used in the circuit with expected transient overvoltage up to 5000 V peak.

The capacitance between the sensor head and a reference plane. The sensor head is placed six inches (15.25 cm) above the reference plane.

100 MHz 200 MHz 500 MHz

<-3VorVin>+3V

<-12VorVin>+12V

<-16VorVin>+16V

<-25VorVin>+25V

<-35VorVin>+35V

1GHz

32 TIVM Series Measurement System User Manual

Reference information

Table 10: Physi

Characteristic Description

Net weight

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 cab

TekVPI cable length

Overal

le length

TIVM1, TIVM02, TIVM05

TIVM1L, TIVM02L, TIVM05L

l length and tolerances

Comp b

Controller to sensor head (TIVM1, TIVM02, TIVM05)

Controller to sensor head

VM1L, TIVM02L, TIVM05L)

(TI

cal speciﬁcations

ox to controller

(Weight does not include accessories and packaging.)

3m(9.84

10 m (32.

55.88 c

0.558 length.

2.9718 m ±10.2 cm (117 in ±4 in)

9.982 m ±10.2 cm (393 in ±4 in)

ft)

81 ft)

m(22in)

8 m ±3.81 cm (22 in ±1.5 in) shoulder-to-shoulder, Boot area included in the overall

Dimensional drawings

Figure 20: Sensor head dimensions with probe tip cover

TIVM Series Measurement System User Manual 33

Reference information

Figure 21: Sensor head dimensions without probe tip cover

Figure 22: Controller dimensions

34 TIVM Series Measurement System User Manual

Figure 23: Comp box dimensions

Reference information

e 24: Probe tip adapter dimensions

Figur

TIVM Series Measurement System User Manual 35

Reference information

IsoVu measurement system block diagram

The following ﬁgure shows a block diagram of the IsoVu measurement system.

Figure 25: Block d iagram

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. The common mode coupling capacitance to earth ground and the surrounding circuit is shown as the Parasitic Bridging Capacitance (Cpara sensor head is placed six (6) inches (15.25 cm) above a ground plane.

sitic). This parasitic capacitance will be approximately 2 pF when the

To m in following items:

imize the effects of common mode capacitive loading consider the

ever possible, choose a reference point in the circuit-under-test that is

When static potential with respect to earth ground.

nect the coaxial (common) shield of the sensor tip cable to the lowest

Con impedance point of the circuit.

creasing the physical distance between the sensor head and any conductive

In surface will reduce the parasitic capacitance.

hen using multiple IsoVu systems to measure different points in the circuit

W that do not have the same common mode voltages, keep the sensor heads separated to minimize the capacitive coupling.

36 TIVM Series Measurement System User Manual

Tripods

Reference information

Tektronix provides two tripods as accessories with the measurement system. The Flexible tripod holds the sensor head while connected to the DUT. The Probe tip tripod supports the sensor tip cables while they are connected to adapters on the circuit board.

Flexible tr

ipod

The tripod can be connected to the DUT in different ways. You can secure the tripod to the DUT using optional feet. T he feet can be clamped or attached to the DUT using common screws. This allows you to install the tripod upside down or right side

Figure 26: Installing the ﬂexible tripod under the DUT.

up as shown in the following ﬁgures.

Figure 27: Connecting the sensor head to the top of the DUT with the ﬂexible tripod.

Probe tip tripod

TIVM Series Measurement System User Manual 37

Use the probe tip tripod to connect the sensor tip cables to adapters on the circuit board. 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 board with the tripod; it reduces stresses on the test point.

Reference information

Figure 28: Connecting to an adapter on the circuit board with the probe tip tripod

38 TIVM Series Measurement System User Manual

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 mm) 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. The other end of the adapter has a center pin socket and four common (shield) sockets around the outside of the adapter. Notches on the adapters can be used to loc the same, the main difference is the spacing of the pins on the circuit board.

ate the shield sockets. The procedure for installing these adapters are

Reference information

To insta l the signal source pin on the circuit board. Use the notch on the adapter to align one of the shield sockets to the common pin on the circuit board. The following ﬁgures show examples of lining up the adapters on the circuit board.

To achieve the best electrical performance, especially the CMRR performance and EMI susceptibility, place the probe tip adapter as close as possible to the circuit board.

l the adapters onto the square pins, line up the center of the adapter with

Figure 29: Lining up the MMCX-to-0.1-inch (2.54 mm) adapter on the circuit board

TIVM Series Measurement System User Manual 39

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

40 TIVM Series Measurement System User Manual

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. (See Figure 28 on page 38.)

TIVM Series Measurement System User Manual 41

Reference information

Installing the square pins on the circuit board

The following ﬁgure shows the recommended cle arance r equire ments 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

42 TIVM Series Measurement System User Manual

Reference information

The 0.025-inch board. Some square pins might have headers installed on the circuit board. Tektronix recommends removing the plastic spacer from the square pins to gain closer access to the circuit board as shown in the following ﬁgure to achieve the best electrical performance, especially the CMRR. You might need to use a pair of tweezers to remove the spacer as shown in the ﬁgure.

(0.635 mm) square pins should already be located on the circuit

34: Removing the header from square pins on the circuit board

Figure

onix provides a set of solder pins (0.018-inch (0.46 mm) diameter) to install

Tektr on the circuit board for use with the MMCX to 0.062-inch (1.57 mm) adapter. Use the soldering aide tool accessory (Tektronix part number, 003-1946-xx) to install these pins on the circuit board.

NOTE. The solder pins are extremely small and can be challenging to handle.

Tektronix recommends using tweezers and a magnifying tool when installing

pins on the circuit board.

the

The solder pins can be installed around a surface mounted component on the

rcuit board, but adequate clearance should be maintained for a good electrical

ci connection for the adapter. (See Figure 33 on page 42.)

OTE. The coaxial (common) shield of the sensor tip cable and tip adapters

should always be connected to the lowest impedance point (usually a circuit common or power supply rail) in the circuit-under-test (relative to the sensor tip cable/center conductor) to obtain the most accurate waveform.

TIVM Series Measurement System User Manual 43

Reference information

Use the followi circuit board:

1. Carefully ins following illustration.

ng steps to install the solder pins using the soldering aide on the

ert t he solder pins into the soldering aide as shown in the

Figure 35: Using the soldering aide to install the square pins on the circuit board

2. Use the soldering aide to hold the square pins in place while soldering the square pins to the circuit board.

3. If necessary apply a small amount of adhesive to further strengthen the connection to the c i rcuit board. However, keep the height of the adhesive to a minimum to provide good electrical contact for the adapter. (See Figure 33.)

44 TIVM Series Measurement System User Manual

User service

Service offerings

Tektronix provides service to cover repair under warranty and other services that are designed to meet your speciﬁc service needs.

Whether providing warranty repair service or any of the other services listed below, Tektronix service technicians are well equipped to service the IsoVu measurement system. Services are provided at Tektronix Service Centers and on-site at your facility, depending on your location.

Warranty

repair service

Calibration and repair

service

Preventive maintenance

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

In addition to warranty repair, Tektronix Service offers calibration and other services that provide cost-effective solutions to your service needs and quality stand worldwide by the leading-edge design, manufacturing, and service resources of Tektronix to provide the best possible service.

CAUTION. To prevent damage to the measurement system, do not expose it to

spr head when cleaning the exterior.

locations worldwide.

ards compliance requirements. Tektronix instruments are supported

ays, liquids, or solvents. Avoid getting moisture inside the controller or sensor

TIVM Series Measurement System User Manual 45

User service

Clean the exter

ior surfaces with a dry, lint-free cloth or a soft-bristle brush. If dirt remains, use a soft cloth or swab dampened with a 75% isopropyl alcohol solution. Use only enough solution to dampen the cloth or swab. Do not use abrasive compounds on any part of the instrument.

Performance veriﬁcation procedures

Use the following procedures to verify the performance of the IsoVu measurement system. Before beginning the procedures, photocopy the test record and use it to record the performance results. (See page 53, Test record.)

Required e

quipment

Table 11: Required equipment for performance veriﬁcation

Description Minimum requirements Example product

Oscilloscope with TekVPI interface  1GHz,50 input support, fully compatible

Pulse generator 1 V

TIVM series 1X sensor tip cable As per description Tektronix IVTIP1X

MMCX Jack (female) to BNC female adapter

The equipment r equired to perform the performance veriﬁcation procedures are shown in the following table.

Tektronix MDO4104C

with TekVPI interface

, <1ns risetime

p-p

As per description

Tektronix Tek-DPG

Fairview Microwave Product SKU: SM3610

Preparation

Prepare the equipment as follows:

1. Tur

n on the TekVPI oscilloscope.

2. Connect the Tek-DPG Deskew pulse generator into Channel 2 of the TekVPI

cilloscope.

3. Allow the test equipment to warm up for 20 minutes at an ambient temperature

f20°Cto30°C.

46 TIVM Series Measurement System User Manual

Propagation delay

User service

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 referen oscilloscope and the output of the pulse generator is connected to the input of the measurement system. The delay is then measured between the saved reference waveform and the acquired waveform of the measurement system.

NOTE. This procedure is valid for all versions of the TIVM Series IsoVu

measurement systems.

ce waveform. Next, the measurement system is connected to the

Create t he reference

waveform

Complete the following steps to create the reference waveform:

1. Connect the Tek-DPG Deskew Pulse Generator output BNC cable directly to Channel 1 input of the TekVPI oscilloscope.

2. Enable Channel 2 and use the following setups:

Vertical Scale: 500 mV/div.

Vertical Position: -3 divisions

Set Termination: 1MΩ,

Coupling: DC

Bandwidth: FULL

skew: 0 seconds

3. Set the Trigger menu using the following setups:

Type: Edge

Source: CH2

Slope: Negative

Level: +1.50 V

Coupling: DC

4. Use the following setups for Channel 1.

Vertical Scale: 200 mV/div

Coupling: DC

Termination: 50 Ω

Bandwidth: FULL

TIVM Series Measurement System User Manual 47

User service

Position: 0 (ce

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:

0to-11kHzmode(Mode 1)

Output Enable: ON

7. The Channel 1 waveform should appear approximately on the center of the

oscilloscope display. If the waveform is not vertically centered in the display, adjust the display as necessary to vertically center the waveform.

8. Use the following steps to save the Channel 1 waveform as the reference waveform (R1).

Press MENU on the oscilloscope.

ntered)

Create the TIVM series

waveform

Select Save Waveform.

Source: CH1.

Destination: R1.

Select OK Save to save the Channel 1 waveform as reference waveform

R1. The new reference waveform should now be displayed on the oscilloscope.

9. Disable the output of the Tek-DPG.

10. Disconnect the Tek-DPG Deskew Pulse Generator output BNC cable from

the Channel 1 input of the TekVPI oscilloscope.

Complete the following steps to set up the TIVM series waveform:

1. Connect the Comp box of the TIVM series measurement system to Channel 1 of the TekVPI oscilloscope.

2. Connect a IVTIP1X sensor tip cable to the TIVM series input (tighten the SMA connector from the cable to the sensor head and attach the nose cone.)

3. Allow the measurement system to warm up for 20 minutes at an ambient temperature of 20 ° to 30 °C.

4. Connect an MMCX Jack (female) to BNC female adapter to the output BNC cable of the Tek-DPG.

48 TIVM Series Measurement System User Manual

User service

Measure the propagation

delay

5. Set the TIVM ser

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. Connect the IVTIP1X sensor tip cable to the MMCX Jack (female) to BNC

female adapter.

8. Enable the output of the Tek-DPG.

9. The Channel 1 waveform should appear on the oscilloscope display and be

approximately vertically centered on the d isplay. If not, ONLY adjust the vertical settings as necessary to center the waveform on the display.

Complete the following steps to measure and record the propagation delay.

1. Set up t

a. Select Measure.

he delay measurement on the oscilloscope as follows:

ies to the following:

b. Select Add Measurement.

c. Select Measurement Type: Delay.

d. Select Conﬁgure: Delay.

e. Set the Source to R1.

f. Set

g. Select OK Add Measurement.

DelayTotoCH1.

TIVM Series Measurement System User Manual 49

User service

2. The oscillosco

pe display should be similar to the following ﬁgure.

Figure 36: Propagation delay measurement

Record the resulting delay measurement on the test record.

3. Disable the output of the Tek-DPG.

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 Remedy

The measurement system will not power on; no indicators are on.

Controller STATUS indicator is ﬂashing green.

Controller STATUS indicator is ﬂashing red and yellow

Verify the TekVPI comp box is securely attached to the oscilloscope. Detach and then reattach the comp box (using a different oscilloscope channel if necessary). If the condition persists, return the system to Tektronix for service.

Detach and then reattach the comp box (using a different oscilloscope channel if necessary). Do not force the comp box into the oscilloscope connector at an angle; connect it to the oscilloscope with a ﬁrm, horizontal force. If the condition persists, return the system to Tektronix for service.

This condition indicates a failure in the measurement system. Most often, a failure is detected when the m easurement system is ﬁrst connected to the oscilloscope (while executing power-on self tests). Detach and then reattach the comp box to the scope. If the condition persists, return the system to Tektronix for service.

50 TIVM Series Measurement System User Manual

Table 12: Problems and possible solutions (cont.)

Problem Remedy

Controller SELF CAL STATUS indicator turns solid red after pressing SELF CAL button (or never completes).

Waveform distortion when the signal from the D UT is less than 5 Hz or a multiple of 43.5 Hz

Output waveform is clipped or distorted

Frequency response is rolled off Check the bandwidth limit on the oscilloscope.

Remove input signal (differential must be 0.0V).

Allow system to warm up 20 minutes.

Make sure the ﬁber cable is not subjected to dynamic mechanical or thermal stresses.

If the self calibration does not complete in a minute, detach and reattach the comp box to

the oscilloscope – then try again.

Disable the Offset Correction. Refer to the Offset correction section earlier in this document. (See page 15.)

Verify that the Output Clamp is disabled.

Check that the proper sensor tip cable is being used for the measurement. Refer to

Selecting a sensor tip cable section earlier in this document. (See page 19.)

Change the Input Offset to center the signal on-screen.

Make sure the correct Range is selected (1X or 2X).

User service

Check the sensor tip cable continuity and sensor head input resistance (see below).

Output waveform is unstable (low frequency noise and/or DC offset keep changing)

Measurements are inaccurate

Cannot achieve high CMRR Try a different sensor tip cable.

Too much noise and cannot accurately resolve signal

Make sure the ﬁber cable is not subjected to dynamic mechanical and thermal stresses.

Verify that Offset Correction is enabled (detach and then reattach the comp box to make

sure it has been re-enabled).

Run SELF CAL.

Check that the proper sensor tip cable is being used for the measurement. Refer to

Selecting a sensor tip cable section earlier in this document. (See page 19.)

Make sure the correct Range is selected (1X or 2X).

Make sure the signal is on-screen.

Switch to the 1X Range.

Choose a sensor tip cable with less attenuation.

TIVM Series Measurement System User Manual 51

User service

Table 12: Problems and possible solutions (cont.)

Problem Remedy

No signal detected; waveform is a ﬂat line

Large DC offset in waveform Run SELF CAL.

Check the sensor tip cable continuity:

Sensor tip cable

IVTIP1X - 1X sensor tip cable

IVTIP5X - 5X sensor tip cable

IVTIP10X - 10X sensor tip cable

IVTIP25X - 25X sensor tip cable

IVTIP50X - 50X sensor tip cable

Measure the SMA input resistance of the Sensor Head using a 4-wire measurement; it

should be between 47.5  and 52.5 . If not, then the Sensor Head has been damaged and needs to be returned to Tektronix for service.

Check the controller STATUS indicator for possible error conditions.

Apply a test signal directly to the SMA input of sensor head to determine if the problem is

the sensor tip cable or the sensor head.

Resistance

0.2 

200  ±2%

453  ±2%

1.21 k ±2%

2.49 k ±2%

Run AutoZero.

Set Input Offset to 0.0 V.

Cannot select between 1X and 2X range (5000/7000/70000 Series oscillocopes)

Probe compensation fails (7000/70000 Series oscilloscopes)

When Auto Range is turned ON, the Range is selected automatically when the V/div setting is changed. You cannot change the Range directly (the button will appear to not function).

This is a normal condition. You can ignore the failure.

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.

When you return the measurement system to Tektronix, attach a tag showing the following information:

Name of the product owner

Address of the owner

Instrument serial number

A description of problems encountered and/or service required

52 TIVM Series Measurement System User Manual

Test record

Table 13: Test re cord

User service

Photocopy this test record for recording the results of the performance veriﬁcation procedures.

Model number:

Serial numb

Temperature:

Propagatio

TIVM1(3mﬁ

TIVM1L (10

TIVM02 (3

TIVM02L

TIVM05 (

TIVM05

er:

n delay

m ﬁber length)

(10 m ﬁber length)

3mﬁber length)

L(10mﬁber length)

ber length)

Certiﬁcate

RH %:

Technician:

Date of cali

Minimum Incoming Outgoing Maximum

30 ns 40 ns

61 ns

30 ns 40 ns

61 ns

30 ns 40 ns

61 ns

number:

bration:

75 ns

TIVM Series Measurement System User Manual 53

User service

54 TIVM Series Measurement System User Manual

Appendix A: Remote programming

This appendix describes commands and queries that can be sent to the sens or 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 s upporting oscilloscopes, if any, are des

For details on the command syntax, refer to the programmer documentation for your oscil

CH<n>:PRObe?

cribed with the commands.

loscope.

Returns p

robe information for channel <n>. Query only.

CH<n>:PRObe:AUTOZero EXECute

This com by the measurement system and then by the oscilloscope. Command only.

The sys calibration before the oscilloscope does its AutoZero.

Refer calibration. (See page 12, Self calibration.)

mand executes the A utoZero function. The operation is ﬁrst performed

tem can be conﬁgured (with special keystrokes) to perform a full self

to the self calibration procedure for information on performing the self

CH<n>:PRObe:COMMAND “CLAMP”, {“ON” | “OFF”}

Only supported by 3000/4000 Series oscilloscopes.

command enables or disables the clamp circuitry. The parameters enclosed in

The quotes are case sensitive and must be sent as capital letters.

<n>:PRObe:COMMAND? “CLAMP” . The query returns either “ON” or

CH “OFF” enclosed in quotes.

CH<n>:PRObe:SET {“CLAMP ON” | “CLAMP OFF”}

Only supported by 5000/7000/70000 Series oscilloscopes.

The command enables or disables the clamp circuitry. The parameters enclosed in quotes are case insensitive.

CH<n>:PRObe:SET?. The query returns either “CLAMP ON” or “CLAMP OFF” enclosed in quotes. The case is the same as the last command received.

TIVM Series Measurement System User Manual 55

Appendix A: Remote programming

CH<n>:PRObe:

FORCEDRange <NR3>

CH<n>:PRObe:GAIN?

The command selects the dynamic range of the sensor tip in V

and is dependent

p-p

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

1X 1.0 or 2.0

5X 5.0 or 10.0

10X 10.0 or 20.0

25X 25.0 or 50.0

50X 50.0 or 100.0

p-p

CH<n>:PRObe:FORCEDRange? The query returns the dynamic range of the sensor tip in V

p-p

Returns the gain factor of the sensor tip (inverse of attenuation). Dependent on the

hed sensor tip cable. Query only.

attac

CH<n>:PRObe:ID {:SERnumber | :TYPe}?

y only. When sending only PRObe:ID?, the query returns the sensor tip type

Quer string followed by the serial number string.

n sending PRObe:SERnumber?, the query returns the serial number string.

Whe

When sending PRObe:TYPe?, the query returns one of the following sensor tip

pe strings (note the trailing spaces within the return strings):

“TIVM1 ”(1GHz, 3m)

“TIVM1L ”(1GHz, 10m)

“TIVM05 ”(500MH z, 3m)

“TIVM05L”(500MHz, 10m)

“TIVM02 ”(200MH z, 3m)

“TIVM02L”(200MHz, 10m)

56 TIVM Series Measurement System User Manual

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?

ly 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.

CH<n>:PRObe:UNIts?

Returns the units of the sensor tip (always “V”). Query only.

CH<n>:PROBECOntrol {AUTO | MAN}

Only supported by 5000/7000/70000 Series oscilloscopes.

The command sets the Auto or Manual sensor tip range control.

CH<n>:PROBE:PROBECOntrol?. The query returns the keyword AUTO or MANUAL.

CH<n>:PROBEFunc:EXTAtten <NR3>

Only supported by 5000/7000/70000 Series oscilloscopes.

The command sets user-deﬁned external attenuation factor.

CH<n>:PROBEFunc:EXTAtten?. The query returns the external attenuation factor.

CH<n>:PROBEFunc:EXTDBatten?

Only supported by 5000/7000/70000 Series oscilloscopes.

Returns the external attenuation factor expressed in dB. Query only.

TIVM Series Measurement System User Manual 57

Appendix A: Remote programming

CH<n>:PROBEF

unc: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 value has been entered.

“V” unless a user-deﬁned

58 TIVM Series Measurement System User Manual

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

U.S. nationally recognized

testing laboratory lis ting

Canadian certiﬁcation

Compliance was demonstrated to the following speciﬁcation as listed in the Ofﬁcial Journal of the European Union:

Low Voltage Directive 2014/35/EU.

EN 61010-1. Safety Requirements for Electrical Equipment for Measurement, Control, and Laboratory Use – Part 1: General Requirements.

EN 61010-031. Particular requirements for handheld probe assemblies for electrical measurement and test eq uipment (partially applicable).

UL 61010-1. Safety Requirements for Electrical Equipment for Measurement, Control, and Laboratory Use – Part 1: General Requirements.

UL 61010-031. Particular requirements for handheld probe assemblies for electrical measurement and test eq uipment (partially applicable).

CAN/CSA-C22.2 No. 61010-1. Safety Requirements for Electrical Equipment for Measurement, Control, and Laboratory Use – Part 1: General Requirements.

CAN/CSA-C22.2 No. 61010-031. Particular requirements for handheld probe assemblies for electrical measurement and test equipment (partially applicable).

Additional compliances

TIVM Series Measurement System User Manual 59

IEC 61010-1. Safety Requirements for Electrical Equipment for Measurement, Control, and Laboratory Use – Part 1: General Requirements.

UL 61010-031. Particular requirements for handheld probe assemblies for electrical measurement and test eq uipment (partially applicable).

EN 60825-1. Safety of Laser Products-Part 1: Equipment Classiﬁcation a nd Requirements - Edition 2 2007

US 21CFR PT1010 Performance Standard for Electronic Parts 2015.

US 21CFR PT1040 Performance Standards for Light Emitting Products 2015.

Appendix B: Compliance information

Equipment type

Pollution degree

descriptions

Test and measur

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 expect condensation occurs only when the product is out of service.

Polluti 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.

ing equipment.

ed.Thislocationisatypicalofﬁce/home environment. Temporary

on degree 3. Conductive pollution, or dry, nonconductive pollution

Pollution degree rating

IP rating

Measurement and

overvoltage category

scriptions

Pollution degree 2 (as deﬁned in IEC 61010-1). Rated for indoor, dry location use only.

0(asdeﬁned in IEC 60529).

IP2

Measurement terminals on this product may be rated for measuring mains voltages from one or more of the following categories (see speciﬁc ratings marked on the product and in the manual).

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.

NOTE. Only measurement circuits have a measurement categor y rating. Other

circuits within the product do not have either rating.

60 TIVM Series Measurement System User Manual

Environmental considerations

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

Appendix B: Compliance information

Product end-of-life

handling

Observe the f

ollowing guidelines when recycling an instrument or component:

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 n atural 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 this product complies with the applicable European Union re on waste electrical and electronic equipment (WEEE) and batteries. For information about recycling options, check the Tektronix Web site (www.te

quirements according to Directives 2012/19/EU and 2006/66/EC

k.com/productrecycling).

TIVM Series Measurement System User Manual 61

Appendix B: Compliance information

62 TIVM Series Measurement System User Manual

Index

Symbols and Numbers

1X Range, 18 2X Range, 18

aberrations, 15, 16 accessories

optional, 2 standard

adapter

clearance requirements, 42

TCA-VPI50, xi aliasing, 15 application examples, 23 Auto Ra AutoZero, 14

nge, 18

bend radius

ﬁber-optic cables, 2

sensor tip cables, 2 block diagram, 36

ble care, 2

ca cable handling practices, 2 calibration status, 8 clamping button, 8 clamping indicator, 8 cleaning procedures, 45 clearance requirements, 4

adapters, 42 CMRR, 15, 23 comp box, x

dimensions, 34 compensate probe feature

DPO7000,

MSO/DPO70000 series oscilloscopes, 21

compliance

environmental, 61

safety, 59

connecting the measurement

system, 11

controller, x

dimensions, 34

controller

controller indicators

current sensing example, 25 cutof

buttons clamping, 8 menu, 7, 14 range, 7 self cal, 8

clamping over range, 7 range, 7 self cal, 8 status, 8

f frequency, 16

derating curve, 4 deskew, 21 differential dynamic range, 17 dimensions

comp box, 34

ntroller, 34

co probe tip adapter, 35 sensor head, 33

environmental compliance, 61 environmental considerations, 3 error conditions, 50 ESD discharge example, 26

ﬁber-optic cable

safe handling practices, 2

ﬂexible tripod, 37

input offset, 21

input resistance

sensor tip cables, 20 input speciﬁcations, 3 IsoVu, ix

key featur

es, ix

laser certiﬁcation, ix low-pass ﬁlter, 15

measurement system status, 8 menu button, 7, 14 MMCX connector, xi, 12, 24

s, xi

model

offset correction, 15

disabling, 15 operating requirements, 2 optional accessories, 2 output clamping, 20

r range Indicator, 7

ove

packaging, 52 performance veriﬁcation

procedures, 46

propagation delay, 47

required equipment, 46

test record, 53 probe compensation failures, 21 probe tip adapter

dimensions, 35 probe tip adapters, 39 probe tip tripod, 37 product description, x programmatic interface, 13 propagation delay, 21

TIVM Series Measurement System User Manual 63

Index

range button, 7 range indicators, 7 remote programming

CH<n>:PRObe CH<n>:PRObe:

FORCEDRange, 56

CH<n>:PRObe:AUTOZero

EXECute, 55

CH<n>:PRObe:COMMAND

“CLAMP”, 5 CH<n>:PRObe:GAIN?, 56 CH<n>:PRObe:ID?, 56 CH<n>:PRObe:PROPDELay?, 57 CH<n>:PRObe:RECDESkew?, 57 CH<n>:PRObe:RESistance?, 57 CH<n>: CH<n>:PRObe:UNIts?, 57 CH<n>:PROBECOntrol, 57 CH<n>:PROBEFunc:

CH<n>:PROBEFunc:

repackaging, 52 RF burn area, 6 RF burns, 4

PRObe:SET, 55

EXTAtten, 57

EXTD

EXTUnits, 58

?, 55

Batten?, 57

safety compliance, 59 safety infor safety summary, v self cal

AutoZero, 14 button, 8 indicator, 8, 13 programmi

requirements, 13 self calibration, 12 sensor head, 9

description, xi

dimensions, 33

labels, sensor tip

labels, 9, 17, 20 sensor tip cable

installation, 11

selection considerations, 19

or tip cables, vi, xi, 9

sens

bend radius, 2 service offerings, 45 solder aid, 1 solder aide, 43 solder pin installation, 43

eciﬁcations, 29

sp square pin adapters, 12

mation, v

ng, 13

standard acces status indicator, 8 supported oscilloscopes, xi

sories, 1

TCA-VPI50 adapter, xi test record, 53 tip cables, 9 TIVM02, xi TIVM02L, xi TIVM05, xi TIVM05L, xi TIVM1, xi TIVM1L, xi

,37

tripods troubleshooting, 50

user service, 45

warranty repair service, 45

64 TIVM Series Measurement System User Manual

Tektronix TIVM1 2,TIVM1L 2 User Manual

Specifications and Main Features

Frequently Asked Questions

User Manual