Tektronix AM503B User manual
Instruction Manual
AM 503B & AM 5030
AC/DC Current Probe Amplifiers
070-8766-05
This document applies for firmware version 3.0
and above.
Warning
The servicing instructions are for use by qualified
personnel only. To avoid personal injury, do not
perform any servicing unless you are qualified to
do so. Refer to the Safety Summary prior to
performing service.
Copyright T ektronix, Inc. 1994. All rights reserved. Licensed software products are owned by Tektronix or its suppliers
and are protected by United States copyright laws and international treaty provisions.
Use, duplication, or disclosure by the Government is subject to restrictions as set forth in subparagraph (c)(1)(ii) of the
Rights in T echnical Data and Computer Software clause at DFARS 252.227-7013, or subparagraphs (c)(1) and (2) of the
Commercial Computer Software – Restricted Rights clause at F AR 52.227-19, as applicable.
T ektronix products are covered by U.S. and foreign patents, issued and pending. Information in this publication supercedes
that in all previously published material. Specifications and price change privileges reserved.
Printed in the U.S.A.
T ektronix, Inc., P.O. Box 1000, Wilsonville, OR 97070–1000
TEKTRONIX and TEK are registered trademarks of T ektronix, Inc.
WARRANTY
T ektronix 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, T ektronix, 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.
In order to obtain service under this warranty, Customer must notify Tektronix of the defect before the expiration of 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 T ektronix, with shipping charges prepaid.
T ektronix shall pay for the return of the product to Customer if the shipment is to a location within the country in which the
T ektronix 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. T ektronix shall not be obligated to furnish service under this warranty a) to repair damage resulting
from attempts by personnel other than T ektronix representatives to install, repair or service the product; b) to repair
damage resulting from improper use or connection to incompatible equipment; or c) to service a product that has been
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 THIS PRODUCT IN LIEU OF ANY
OTHER WARRANTIES, EXPRESSED OR IMPLIED. TEKTRONIX AND ITS VENDORS DISCLAIM ANY
IMPLIED WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE.
TEKTRONIX’ RESPONSIBILITY TO REPAIR OR REPLACE DEFECTIVE PRODUCTS IS THE SOLE AND
EXCLUSIVE REMEDY PROVIDED TO THE CUST OMER 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.
EC Declaration of Conformity
We
Tektronix Holland N.V.
Marktweg 73A
8444 AB Heerenveen
The Netherlands
declare under sole responsibility that the
AM503B Current Probe Amplifier
meet the intent of Directive 89/336/EEC for Electromagnetic Compatibility.
Compliance was demonstrated to the following specifications as listed in the Official
Journal of the European Communities:
EN 50081-1 Emissions:
EN 55022 Class B Radiated and Conducted Emissions
EN 60555-2 AC Power Line Harmonic Emissions
EN 50082-1 Immunity:
IEC 801-2 Electrostatic Discharge Immunity
IEC 801-3 RF Electromagnetic Field Immunity
IEC 801-4 Electrical Fast Transient/Burst Immunity
IEC 801-5 Power Line Surge Immunity
This product complies when installed into the following Tektronix instrument
enclosure:
TM502A Power Supply
EC Declaration of Conformity
We
Tektronix Holland N.V.
Marktweg 73A
8444 AB Heerenveen
The Netherlands
declare under sole responsibility that the
AM5030 and AM5030S Current Probe Amplifiers
meet the intent of Directive 89/336/EEC for Electromagnetic Compatibility.
Compliance was demonstrated to the following specifications as listed in the Official
Journal of the European Communities:
EN 55011 Class B Radiated and Conducted Emissions
EN 50081-1 Emissions:
EN 60555-2 AC Power Line Harmonic Emissions
EN 50082-1 Immunity:
IEC 801-2 Electrostatic Discharge Immunity
IEC 801-3 RF Electromagnetic Field Immunity
IEC 801-4 Electrical Fast Transient/Burst Immunity
Table of Contents
Getting Started
Operating Basics
General Safety Summary ix. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Service Safety Summary xiii. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Preface xv. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Getting Started 1–1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Customer Support 1–1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
AM 503B and AM 5030 System Configuration 1–2. . . . . . . . . . . . . . . . . . . . . . . . .
Standard Accessories 1–3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Optional Accessories 1–3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Installing the TM Series Power Module 1–4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Installing the AM 503B or AM 5030 Into the Power Module 1–5. . . . . . . . . . . . . . .
Connecting the Amplifier to an Oscilloscope 1–7. . . . . . . . . . . . . . . . . . . . . . . . . . .
Connecting a Current Probe to the Amplifier 1–8. . . . . . . . . . . . . . . . . . . . . . . . . . .
Measurements 2–1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Operating the Current Probe Slide 2–1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Degaussing and Autobalancing the Current Probe 2–2. . . . . . . . . . . . . . . . . . . . . . .
DC Measurements 2–3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
AC Measurements 2–4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Control Summary 2–7. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
AM 503B and AM 5030 Controls 2–8. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
AM 5030 GPIB Controls 2–12. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
GPIB Operation 2–13. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
GPIB Requirements 2–14. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Setting the GPIB Parameters 2–14. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Other Documents You Will Need 2–15. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Functional Command Groups 2–17. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Front Panel Commands 2–17. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
GPIB Status Commands 2–18. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Amplifier Status Commands 2–18. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Probe Status Commands 2–19. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Commands 2–21. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
ALLEve? (Query Only) 2–21. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
AMPS 2–21. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
BWLIMit 2–22. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
COUpling 2–22. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
DCLEVel 2–23. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
DEGAuss (No Query Form) 2–23. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
ERRor? (Query Only) 2–24. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
EVent? (Query Only) 2–24. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
EXit 2–24. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
FPLock 2–25. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
AM 503B & AM 5030 Amplifier Instruction Manual
i
Contents
Reference
HELp? (Query Only) 2–25. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
ID? (Query Only) 2–26. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
INIT (No Query Form) 2–26. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
OVerload? (Query Only) 2–26. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
PATH 2–27. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
PROBEOPen? (Query Only) 2–27. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
PROBETRim 2–28. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
PROBETYpe? (Query Only) 2–29. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
RQS 2–29. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
SERIAL? (Query Only) 2–30. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
SET? (Query Only) 2–30. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
TEST (No Query Form) 2–31. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
UNIts? (Query Only) 2–31. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Error Messages & Codes 2–33. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Reference Notes 3–1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Degaussing a Probe with an Unpowered Conductor in the Jaws 3–1. . . . . . . . . . . . .
Bandwidth Limiting 3–2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Measuring Differential Current 3–2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
AC and DC Coupling 3–3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Maximum Current Limits 3–4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Extending Current Range 3–5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Increasing Sensitivity 3–7. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Application Notes 3–9. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Automobile Charging Systems 3–9. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Inductance Measurements 3–11. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Continuity T est of Multiple-Conductor Cable 3–14. . . . . . . . . . . . . . . . . . . . . . . . . . .
Measuring Inductor Turns Count 3–14. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Error Codes 3–17. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Troubleshooting 3–19. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Specifications
Specifications 4–1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Warranted Specifications 4–2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Nominal and T ypical Characteristics 4–2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Environmental Characteristics 4–4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Performance Verification
Performance Verification Setup 5–1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
T est Procedure Conditions 5–1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Equipment Preparation 5–1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
W arranted Specifications 5–2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Performance Verification with an A6312 5–3. . . . . . . . . . . . . . . . . . . . . . .
Required Test Equipment 5–3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Bandwidth 5–5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Rise Time 5–7. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
DC Gain Accuracy 5–9. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
ii
AM 503B & AM 5030 Amplifier Instruction Manual
Adjustment Procedures
Contents
Performance Verification with an A6302 or A6302XL 5–15. . . . . . . . . . . .
Required Test Equipment 5–15. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Bandwidth 5–17. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Rise Time 5–19. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
DC Gain Accuracy 5–21. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Performance Verification with an A6303 or A6303XL 5–27. . . . . . . . . . . .
Required Test Equipment 5–27. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Bandwidth 5–28. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Rise Time 5–30. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
DC Gain Accuracy 5–32. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Performance Verification with an A6304XL 5–37. . . . . . . . . . . . . . . . . . . .
Required Test Equipment 5–37. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Rise Time 5–38. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Bandwidth 5–40. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
DC Gain Accuracy 5–40. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Adjustment Procedures for Current Probes 6–1. . . . . . . . . . . . . . . . . . . . .
A6312, A6302 and A6302XL Adjustment 6–3. . . . . . . . . . . . . . . . . . . . . . .
Required Test Equipment 6–3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
A6312, A6302 and A6302XL DC Offset Adjustment 6–3. . . . . . . . . . . . . . . . . . . . .
A6303 and A6303XL Adjustments 6–7. . . . . . . . . . . . . . . . . . . . . . . . . . . .
Required Test Equipment 6–7. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
A6303 and A6303XL DC Offset Adjustment 6–8. . . . . . . . . . . . . . . . . . . . . . . . . . .
A6303 and A6303XL Transient Response and Gain Adjustment 6–10. . . . . . . . . . . .
A6304XL Adjustments 6–13. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Required Test Equipment 6–13. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
A6304XL DC Offset Adjustment 6–14. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
DC Gain Adjustment 6–16. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
A6304XL Transient Response Adjustment 6–18. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Maintenance
Customer Maintenance 7–1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Service Strategy 7–1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Preventive Maintenance 7–1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Disassembly 7–3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Static Device Precautions 7–3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Front Panel Knobs 7–4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Side Covers 7–4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Front Panel and Release Lever Assembly 7–4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Front Panel Disassembly 7–7. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Using the Rear Interface Output Connector 7–8. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Battery Replacement 7–10. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Replaceable Mechanical Parts
Replaceable Parts 8–1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Parts Ordering Information 8–1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Using the Replaceable Parts List 8–1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
AM 503B & AM 5030 Amplifier Instruction Manual
iii
Contents
Glossary and Index
iv
AM 503B & AM 5030 Amplifier Instruction Manual
List of Figures
Contents
Figure 1–1: Configuring the AM 503B and AM 5030 Current
Measurement System 1–2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Figure 1–2: TM Series Power Module Voltage Selector 1–4. . . . . . . . . . .
Figure 1–3: Changing the TM 502A Operating Voltage 1–5. . . . . . . . . . .
Figure 1–4: Installing the AM 503B and AM 5030 into the
Power Module 1–6. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Figure 1–5: Connecting a Current Probe to the Amplifier 1–8. . . . . . . . .
Figure 2–1: A6312, A6302, and A6302XL Slide Operation 2–1. . . . . . . . .
Figure 2–2: A6303, A6303XL, and A6304XL Slide Operation 2–2. . . . . .
Figure 2–3: Current Probe Polarity 2–4. . . . . . . . . . . . . . . . . . . . . . . . . . . .
Figure 2–4: The AM 503B and AM 5030 Front Panel 2–7. . . . . . . . . . . . .
Figure 2–5: Stacked GPIB Connectors 2–13. . . . . . . . . . . . . . . . . . . . . . . . .
Figure 2–6: Typical GPIB Network Configurations 2–14. . . . . . . . . . . . . .
Figure 3–1: Measuring Differential Current and Nulls 3–2. . . . . . . . . . . .
Figure 3–2: Effect of AC or DC Coupling on Low-Frequency Signals 3–3
Figure 3–3: Applying the Amp-Second Product Rule 3–5. . . . . . . . . . . . .
Figure 3–4: Increasing the DC Measurement Range 3–6. . . . . . . . . . . . . .
Figure 3–5: Increasing Probe Sensitivity 3–7. . . . . . . . . . . . . . . . . . . . . . . .
Figure 3–6: Setup for Measuring Charging Current 3–10. . . . . . . . . . . . . .
Figure 3–7: Charge Current Waveforms 3–10. . . . . . . . . . . . . . . . . . . . . . .
Figure 3–8: Measuring Inductance with a Low-Impedance Source 3–11. .
Figure 3–9: Linear Current vs. Time Ramp 3–12. . . . . . . . . . . . . . . . . . . . .
Figure 3–10: Measuring Inductance with a High-Impedance Source 3–13
Figure 3–11: High-Impedance Source Current Ramp 3–13. . . . . . . . . . . . .
Figure 3–12: Measuring the Number of Turns in a Coil 3–14. . . . . . . . . . .
Figure 3–13: Turns Measurement Using Reference Coil 3–15. . . . . . . . . . .
Figure 5–1: Bandwidth Test Setup for A6312 5–5. . . . . . . . . . . . . . . . . . . .
Figure 5–2: Rise Time Test Setup for A6312 5–7. . . . . . . . . . . . . . . . . . . .
Figure 5–3: DC Gain Accuracy Test Setup for A6312 5–10. . . . . . . . . . . . .
Figure 5–4: Bandwidth Test Setup for A6302/A6302XL 5–17. . . . . . . . . . .
Figure 5–5: Rise Time Test Setup for A6302/A6302XL 5–19. . . . . . . . . . . .
Figure 5–6: DC Gain Accuracy Test Setup for A6302/A6302XL 5–22. . . .
Figure 5–7: Bandwidth Test Setup for an A6303/A6303XL 5–28. . . . . . . .
AM 503B & AM 5030 Amplifier Instruction Manual
v
Contents
Figure 5–8: Rise Time Test Setup for A6303/A6303XL 5–30. . . . . . . . . . . .
Figure 5–9: DC Gain Accuracy Test Setup for A6303/A6303XL 5–33. . . .
Figure 5–10: Rise Time Test Setup for the A6304XL 5–38. . . . . . . . . . . . . .
Figure 5–11: DC Gain Accuracy Test Setup for the A6304XL 5–41. . . . . .
Figure 6–1: A6312, A6302 and A6302XL DC Offset Adjustment
Location 6–3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Figure 6–2: A6303 and A6303XL Adjustment Locations 6–8. . . . . . . . . .
Figure 6–3: A6303 and A6303XL Adjustment Setup 6–11. . . . . . . . . . . . . .
Figure 6–4: A6304XL Adjustment Locations 6–15. . . . . . . . . . . . . . . . . . . .
Figure 6–5: DC Gain Accuracy Adjustment Setup 6–17. . . . . . . . . . . . . . .
Figure 6–6: A6304XL Adjustment Setup 6–18. . . . . . . . . . . . . . . . . . . . . . .
Figure 7–1: Removing the AM 503B and AM 5030 Side Covers 7–4. . . .
Figure 7–2: Removing the Amplifier Release Lever 7–5. . . . . . . . . . . . . .
Figure 7–3: Location of Amplifier Interface Cables 7–5. . . . . . . . . . . . . .
Figure 7–4: Location of Front Panel Screws 7–6. . . . . . . . . . . . . . . . . . . . .
Figure 7–5: Removing the Latch Bar Assembly 7–6. . . . . . . . . . . . . . . . . .
Figure 7–6: Removing the Amplifier Output Connector 7–7. . . . . . . . . . .
Figure 7–7: Removing the Amplifier Front Panel Board 7–8. . . . . . . . . .
Figure 7–8: Using the Rear Interface Output Connector 7–9. . . . . . . . . .
Figure 7–9: Prying Battery Terminal to Remove Battery 7–10. . . . . . . . . .
Figure 7–10: Removing the Backup Battery 7–10. . . . . . . . . . . . . . . . . . . . .
Figure 7–11: Replacing the Backup Battery 7–11. . . . . . . . . . . . . . . . . . . . .
Figure 8–1: AM 503B & AM 5030 Replaceable Parts 8–3. . . . . . . . . . . . .
Figure 8–2: AM 503B & AM 5030 Standard Accessories 8–6. . . . . . . . . .
vi
AM 503B & AM 5030 Amplifier Instruction Manual
List of Tables
Contents
Table 2–1: Front Panel Commands 2–17. . . . . . . . . . . . . . . . . . . . . . . . . . .
Table 2–2: GPIB Status Commands 2–18. . . . . . . . . . . . . . . . . . . . . . . . . . .
Table 2–3: Amplifier Status Commands 2–18. . . . . . . . . . . . . . . . . . . . . . .
Table 2–4: Probe Status Commands 2–19. . . . . . . . . . . . . . . . . . . . . . . . . . .
Table 2–5: AM 5030 Event Codes 2–33. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Table 3–1: Unpowered Circuit Degauss Limits 3–1. . . . . . . . . . . . . . . . . .
Table 3–2: Automobile Charging Systems Test Setup 3–9. . . . . . . . . . . . .
Table 3–3: AM 503B and AM 5030 Front-Panel Error Codes 3–18. . . . . .
Table 3–4: Troubleshooting 3–19. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Table 4–1: Warranted AM 503B and AM 5030 Specifications 4–2. . . . .
Table 4–2: Nominal and Typical AM 503B and AM 5030
Characteristics 4–2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Table 4–3: AM 503B and AM 5030 Mechanical Characteristics 4–3. . . .
Table 4–4: AM 503B and AM 5030 Environmental Characteristics 4–4.
Table 5–1: Required Test Equipment 5–4. . . . . . . . . . . . . . . . . . . . . . . . . .
Table 5–2: Equipment Settings for Bandwidth 5–5. . . . . . . . . . . . . . . . . .
Table 5–3: Equipment Settings for Rise Time 5–8. . . . . . . . . . . . . . . . . . .
Table 5–4: Equipment Settings for DC Gain Accuracy 5–10. . . . . . . . . . .
Table 5–5: DC Gain Accuracy Test for A6312 5–11. . . . . . . . . . . . . . . . . . .
Table 5–6: DC Gain Accuracy Test Worksheet for A6312 5–13. . . . . . . . .
Table 5–7: Required Test Equipment 5–16. . . . . . . . . . . . . . . . . . . . . . . . . .
Table 5–8: Equipment Settings for Bandwidth 5–17. . . . . . . . . . . . . . . . . .
Table 5–9: Equipment Settings for Rise Time 5–20. . . . . . . . . . . . . . . . . . .
Table 5–10: Equipment Settings for DC Gain Accuracy 5–22. . . . . . . . . .
Table 5–11: DC Gain Accuracy Test for A6302/A6302XL 5–23. . . . . . . . .
Table 5–12: DC Gain Accuracy Test Worksheet for A6302/A6302XL 5–25
Table 5–13: Required Test Equipment 5–27. . . . . . . . . . . . . . . . . . . . . . . . .
Table 5–14: Equipment Settings for Bandwidth 5–29. . . . . . . . . . . . . . . . .
Table 5–15: Equipment Settings for Rise Time 5–31. . . . . . . . . . . . . . . . . .
Table 5–16: Equipment Settings for DC Gain Accuracy 5–32. . . . . . . . . .
Table 5–17: DC Gain Accuracy Test for A6303/A6303XL 5–34. . . . . . . . .
Table 5–18: DC Gain Accuracy Test Work Sheet for
A6303/A6303XL 5–36. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Table 5–19: Required Test Equipment 5–37. . . . . . . . . . . . . . . . . . . . . . . . .
Table 5–20: Equipment Settings for Rise Time 5–39. . . . . . . . . . . . . . . . . .
AM 503B & AM 5030 Amplifier Instruction Manual
vii
Contents
Table 5–21: Equipment Settings for DC Gain Accuracy 5–41. . . . . . . . . .
Table 5–22: DC Gain Accuracy Test for the A6304XL 5–43. . . . . . . . . . . .
Table 5–23: DC Gain Accuracy Test Work Sheet for the A6304XL 5–44.
Table 6–1: Required Test Equipment 6–3. . . . . . . . . . . . . . . . . . . . . . . . . .
Table 6–2: Settings for DC Offset Adjustment 6–4. . . . . . . . . . . . . . . . . .
Table 6–3: Error Codes Requiring DC Offset Adjustment 6–5. . . . . . . .
Table 6–4: Required Test Equipment 6–7. . . . . . . . . . . . . . . . . . . . . . . . . .
Table 6–5: Settings for DC Offset Adjustment 6–9. . . . . . . . . . . . . . . . . .
Table 6–6: Error Codes Requiring DC Offset Adjustment 6–9. . . . . . . .
Table 6–7: Settings for Transient Response and Gain Adjustments 6–11.
Table 6–8: Required Test Equipment 6–13. . . . . . . . . . . . . . . . . . . . . . . . . .
Table 6–9: Settings for DC Offset Adjustment 6–14. . . . . . . . . . . . . . . . . .
Table 6–10: Error Codes Requiring DC Offset Adjustment 6–15. . . . . . .
Table 6–11: Equipment Settings for DC Gain Accuracy 6–16. . . . . . . . . .
Table 6–12: Equipment Settings for Transient Response 6–18. . . . . . . . . .
viii
AM 503B & AM 5030 Amplifier Instruction Manual
General Safety Summary
Review the following safety precautions to avoid injury and prevent damage to
this product or any products connected to it.
Only qualified personnel should perform service procedures.
While using this product, you may need to access other parts of the system. Read
the General Safety Summary in other system manuals for warnings and cautions
related to operating the system.
Injury Precautions
Ground the Product
Do Not Operate Without
Covers
Do Not Operate in
Wet/Damp Conditions
Do Not Operate in
Explosive Atmosphere
Avoid Exposed Circuitry
This product is grounded through the grounding conductor of the power cord. To
avoid electric shock, the grounding conductor must be connected to earth
ground. Before making connections to the input or output terminals of the
product, ensure that the product is properly grounded.
To avoid electric shock or fire hazard, do not operate this product with covers or
panels removed.
To avoid electric shock, do not operate this product in wet or damp conditions.
To avoid injury or fire hazard, do not operate this product in an explosive
atmosphere.
To avoid injury, remove jewelry such as rings, watches, and other metallic
objects. Do not touch exposed connections and components when power is
present.
AM 503B & AM 5030 Amplifier Instruction Manual
ix
General Safety Summary
Product Damage Precautions
Use Proper Power Source
Use Proper Voltage
Setting
Provide Proper Ventilation
Do Not Operate With
Suspected Failures
Do not operate this product from a power source that applies more than the
voltage specified.
Before applying power, ensure that the line selector is in the proper position for
the power source being used.
To prevent product overheating, provide proper ventilation.
If you suspect there is damage to this product, have it inspected by qualified
service personnel.
Safety Terms and Symbols
Terms in This Manual
These terms may appear in this manual:
WARNING. Warning statements identify conditions or practices that could result
in injury or loss of life.
Terms on the Product
x
CAUTION. Caution statements identify conditions or practices that could result in
damage to this product or other property.
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 accessible as you read the
marking.
CAUTION indicates a hazard to property including the product.
AM 503B & AM 5030 Amplifier Instruction Manual
General Safety Summary
Symbols on the Product
The following symbols may appear on the product:
DANGER
High Voltage
Certifications and Compliances
CSA Certified Power
Cords
Safety Certification of
Plug-in Modules
CSA Certification includes the products and power cords appropriate for use in
the North America power network. All other power cords supplied are approved
for the country of use.
For plug-in modules that are safety certified by Underwriters Laboratories, UL
Listing applies only when the module is installed in a UL Listed product. CSA
Certification applies only when the module is installed in a CSA Certified
product.
Protective Ground
(Earth) T erminal
ATTENTION
Refer to Manual
Double
Insulated
AM 503B & AM 5030 Amplifier Instruction Manual
xi
General Safety Summary
xii
AM 503B & AM 5030 Amplifier Instruction Manual
Service Safety Summary
Only qualified personnel should perform service procedures. Read this Service
Safety Summary and the General Safety Summary before performing any service
procedures.
Do Not Service Alone
Disconnect Power
Use Care When Servicing
With Power On
Do not perform internal service or adjustments of this product unless another
person capable of rendering first aid and resuscitation is present.
To avoid electric shock, disconnect the main power by means of the power cord
or, if provided, the power switch.
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.
To avoid electric shock, do not touch exposed connections.
AM 503B & AM 5030 Amplifier Instruction Manual
xiii
Service Safety Summary
xiv
AM 503B & AM 5030 Amplifier Instruction Manual
Preface
This Instruction Manual supports the operation and basic maintenance of the
AM 503B and AM 5030 Current Probe Amplifiers.
If you are not familiar with this product, please refer to the Getting Started and
Operating Basics chapters of this manual for basic operating information.
If you are an advanced user, the Reference section contains information on
advanced applications as well as user diagnostic and troubleshooting information.
The Performance Verification and Adjustment Procedure sections support the
qualification and calibration of the probes when used with either amplifier.
NOTE. Except for the A6303, once a probe has been calibrated, it can be used
with any other AM 503B or AM 5030 without readjustment.
The Maintenance section supports the routine maintenance and repair of
mechanical parts associated with the amplifiers.
Related Manuals
Manual Conventions
The Glossary and Index are provided as quick reference locators for important
information.
You can find the documentation supporting the maintenance and repair of the
current probes in the following manuals:
H A6312 Instructions
H A6302 & A6302XL Instructions
H A6303 & A6303XL Instructions
H A6304XL Instructions
The term “Amplifier” is used to refer to either the AM 503B or AM 5030 when
referring to common attributes. If a subject is unique to either amplifier, the
amplifier will be referred to directly by model.
AM 503B & AM 5030 Amplifier Instruction Manual
xv
Preface
xvi
AM 503B & AM 5030 Amplifier Instruction Manual
Getting Started
Getting Started
The AM 503B and AM 5030 current probe amplifiers let you use one probe to
simultaneously measure AC and DC current. The Amplifier converts the sensed
current into a proportional voltage signal that you can measure directly with an
oscilloscope.
The AM 503B and AM 5030 provide better linearity than other current
measurement systems because of a current feedback process used with the probe.
DC measurement capability and high bandwidth allow the Amplifier to
accurately represent square waves and fast-rise signals.
The AM 503B and AM 5030 provide these features:
H Simultaneous DC and AC current measurements.
H High sensitivity.
H One-button autobalancing and probe degaussing.
H No adjustments needed to match a current probe to an individual amplifier
(except for the A6303 current probe).
Customer Support
Operational Support
Service Support
H Probe trim adjust allows fine tuning of gain for increased accuracy.
The AM 5030 provides an additional feature:
H Programmable control from a GPIB controller.
To help you get the best performance from your Amplifier, Tektronix offers the
following customer support services.
If you need assistance operating your amplifier system, please call our Customer
Support Center at 1-800-TEK-WIDE
are outside the United States or Canada, please contact your nearest Tektronix
Service Center.
Should your Amplifier system need repair beyond that described in this manual,
please contact your nearest Tektronix Service Center.
(1-800-835-9433), extension 2400. If you
AM 503B & AM 5030 Amplifier Instruction Manual 1–1
Getting Started
Sales Support
To order optional equipment and accessories, call the Tektronix National
Marketing Center at 1-800-426-2200. If you are outside the United States or
Canada, please contact your nearest Tektronix Service Center.
AM 503B and AM 5030 System Configuration
A complete AM 503B or AM 5030 current measurement system consists of a
current probe amplifier, a compatible current probe, a TM 500 or TM 5000 series
power module, and an appropriate oscilloscope. Refer to Figure 1–1.
Test Oscilloscope
Output
50 oscilloscope input (or add 50
termination here if oscilloscope has
only high-impedance input).
Amplifier in TM Series
Power Module
Current Probe
Input
AM 503B & AM 5030
Current Probe Amplifier
Current Probes
Figure 1–1: Configuring the AM 503B and AM5030 Current Measurement System
The AM 503B is a single-width instrument that plugs into any Tektronix
TM 500 or TM 5000 series power module. The AM 5030 is a single-width
instrument that plugs into any Tektronix TM 5000 series power module. The
Amplifier amplifies the current sensed by the probe and converts the current to a
proportional voltage that is displayed on an oscilloscope or other similar
measuring device.
The AM 503B and AM 5030 systems may be used with the following Tektronix
probes:
H A6312 (20 amps)
H A6302 and A6302XL (20 amps)
H A6303 and A6303XL (100 amps)
H A6304XL (500 amps)
You can also use the CT-4 High-Current Transformer with the A6312, A6302,
and A6302XL current probes to extend their AC current measurement range to
20,000 peak amps.
1–2 AM 503B & AM 5030 Amplifier Instruction Manual
Getting Started
TM 500 Series Power
Modules
TM 5000 Series Power
Module
Oscilloscope
Standard Accessories
The AM 503B operates in a Tektronix TM 500 or TM 5000 series power module
that powers one or more TM 500 series instruments. The Power Module operates
on either 110 or 220 VAC, 50 or 60 Hz.
The AM 5030 operates in a Tektronix TM 5000 series power module that powers
one or more TM 5000 series instruments while providing GPIB support. The
Power Module operates on either 110 or 220 VAC, 50 or 60 Hz.
An oscilloscope displays the output from the current measuring system. A 50
cable is included to connect the Amplifier to the oscilloscope input channel.
If the oscilloscope does not have an input that can be set to 50 impedance, you
need a feedthrough 50 termination. This termination is included as a standard
accessory with your AM 503B and AM 5030 Current Probe Amplifier.
These accessories are shipped with either the AM 503B or AM 5030:
H 50 coaxial cable
Optional Accessories
H 50 feedthrough termination
H Instruction Manual
H Reference card
If you ordered an AM 503S system, you will have received these items:
H AM 503B
H Current Probe (specific probe type depends on option ordered with the
Amplifier)
H TM 502A Power Module
H Toolbox
H AC Power cord
You can order the following optional accessories for the AM 503B and
AM 5030 Current Probe Amplifiers. Refer to the Replaceable Parts List on page
8–6 for Tektronix part numbers to use in ordering these accessories.
AM 503B & AM 5030 Amplifier Instruction Manual 1–3
Getting Started
H One-turn 50 current loop. The current loop is used in the performance
verification procedure for checking the performance of the AM 503B and
AM 5030.
H If you need to measure high-amplitude AC currents, consider using a
Tektronix CT-4 High-Current Transformer with the A6312, A6302, or
A6302XL probes. The CT-4 provides step-down ratios of 20:1 or 1000:1.
For more information about the CT-4, consult your Tektronix sales representative.
Installing the TM Series Power Module
If you ordered your current probe amplifier as a part of a system, a power
module will have been provided. Follow these instructions for the proper setup
and installation of the power module.
The TM Series Power Module can operate from one of four AC line voltages.
The operating voltage is determined by the voltage selector, located on the rear
panel of the TM Series Power Module, as shown in Figure 1–2.
WARNING. To avoid personal injury or equipment damage, do not connect the
power module to the AC line receptacle or turn the power module on until you
have verified that the proper operating voltage is selected.
Voltage Selector
Selector Window
Latch
TM Series
Power Module
Figure 1–2: TM Series Power Module Voltage Selector
1–4 AM 503B & AM 5030 Amplifier Instruction Manual
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