Tektronix VX4101A User Manual
User Manual
VX4101A
MultiPaqInstrument
071-0049-01
This document supports firmware version 2.0
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. 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 three (3) years
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.
Table of Contents
Getting Started
General Safety Summary xi. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Service Safety Summary xiii. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Preface xv. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Product Description 1–1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
VX4101A Description 1–1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Power-On Sequence 1–7. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Physical Description 1–7. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Fuses 1–10. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
IEEE-488 Address 1–10. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Self-Test 1–10. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Accessories 1–12. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Performance Options 1–13. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
About the VXIplug&play Software 1–13. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Installation 1–15. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Installing the Module in the Mainframe 1–15. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Installing the VXIplug&play Software 1–17. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Powering-On the VX4101A 1–22. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
SYSFAIL* Operation 1–25. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Functional Check 1–25. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Operational Check 1–26. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Installation Checklist 1–30. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Operating Basics
About Global and Instrument Commands 2–1. . . . . . . . . . . . . . . . . . . . . .
About Global Commands 2–1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
About Instrument Commands 2–1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
VX4101A Operational Modes 2–3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
About Synchronous Mode 2–3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
About Asynchronous Mode 2–3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
About Instrument Triggering 2–9. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Trigger Sources 2–9. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
VX4101A Trigger Architecture 2–11. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
About Fast Data Channel (FDC) Operation 2–13. . . . . . . . . . . . . . . . . . . . .
About FDC 2–13. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
The FDC Process 2–13. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
FDC Operation with the DMM and DAC 2–16. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
FDC Example 2–17. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Using the VX4101A MultiPaqt Instrument 2–23. . . . . . . . . . . . . . . . . . . . .
Using Asynchronous Mode 2–23. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Using the Counter 2–27. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
What You Should Know About 2–27. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
VX4101A MultiPaq Instrument User Manual
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Table of Contents
Measuring Frequency 2–27. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Measuring Time Interval 2–28. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Measuring Rise Time 2–29. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Measuring Time Interval with Delay 2–30. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Using the Digital Input 2–33. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
What You Should Know About 2–33. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Programming the Digital Input 2–34. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Reading Current Input 2–35. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Reading Points Using the External Handshake Feature 2–35. . . . . . . . . . . . . . . . . . . .
Using the Digital Output 2–37. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
What You Should Know About 2–37. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Outputing One 32-Bit Word 2–38. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Outputing a Sequence 2–39. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Using the Digital Multimeter 2–41. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
What You Should Know About 2–41. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Making a DC Volt Measurement 2–44. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Making AC Volt Measurements 2–44. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Making a 2-Wire Resistance Measurement 2–45. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Making a Current Measurement 2–46. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Using the Digital to Analog Converter (DAC) 2–47. . . . . . . . . . . . . . . . . . .
What You Should Know About 2–47. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Generating Continuous and Multiple Waveforms 2–48. . . . . . . . . . . . . . . . . . . . . . . .
Generating Repetitive W aveforms 2–50. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Reading a Trace from the DAC in Binary 2–51. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Using the Sample Handshake Mechanism 2–52. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Programming a Trace with a Numeric Array List 2–53. . . . . . . . . . . . . . . . . . . . . . . .
Using the Relay Drivers 2–55. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Opening and Closing Relays 2–55. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Using the SurePatht Modules 2–57. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
What You Should Know About 2–57. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Closing a Relay 2–57. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Syntax and Commands
ii
Command Syntax 3–1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
About Protocol and Syntax 3–1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
SCPI Commands for the VX4101A 3–5. . . . . . . . . . . . . . . . . . . . . . . . . . . .
Command Summary 3–5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
ABORt Subsystem 3–7. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
CALibrate Subsystem 3–9. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
INSTrument Subsystem 3–11. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
OUTPut Subsystem 3–14. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
SOURce Subsystem 3–16. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
SYST em Subsystem 3–18. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
TRIGger Subsystem 3–26. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
SCPI Commands for the Counter 3–29. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Command Summary 3–29. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
ARM Subsystem 3–37. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
CALCulate Subsystem 3–47. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
CALibrate Subsystem 3–58. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
VX4101A MultiPaq Instrument User Manual
Table of Contents
CONFigure Subsystem 3–63. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
FETCh? Subsystem 3–73. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
INITiate Subsystem 3–77. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
INPut Subsystem 3–78. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
INSTrument Subsystem 3–89. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
MEASure? Subsystem 3–91. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
OUTPut Subsystem 3–100. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
READ? Subsystem 3–102. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
SENSe Subsystem 3–102. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
SOURce Subsystem 3–109. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
ST ATus Subsystem 3–110. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
TEST Subsystem 3–113. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
UNIT Subsystem 3–114. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
SCPI Commands for the Digital Input 3–115. . . . . . . . . . . . . . . . . . . . . . . . .
Command Summary 3–115. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
CALibration Subsystem 3–119. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
CONFigure Subsystem 3–120. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
FETCh? Subsystem 3–122. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
FORMat Subsystem 3–125. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
INITiate Subsystem 3–126. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
INSTrument Subsystem 3–126. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
MEASure Subsystem 3–128. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
READ? Subsystem 3–130. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
SENSe Subsystem 3–131. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
ST ATus? Subsystem 3–137. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
TEST Subsystem 3–138. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
TRIGger Subsystem 3–139. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
SCPI Commands for the Digital Output 3–147. . . . . . . . . . . . . . . . . . . . . . . .
Command Summary 3–147. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
FORMat Subsystem 3–149. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
INITiate Subsystem 3–150. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
INSTrument Subsystem 3–152. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
OUTPut Subsystem 3–153. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
ST ATus? Subsystem 3–155. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
TEST Subsystem 3–156. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
TRACe Subsystem 3–157. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
TRIGger Subsystem 3–163. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
SCPI Commands for the Digital to Analog Converter 3–169. . . . . . . . . . . .
Command Summary 3–169. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
CALibrate Subsystem 3–171. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
FORMat Subsystem 3–172. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
INITiate Subsystem 3–173. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
INSTrument Subsystem 3–174. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
OUTPUT Subsystem 3–176. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
ST ATus? Subsystem 3–178. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
TEST Subsystem 3–179. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
TRACe Subsystem 3–180. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Trigger Subsystem 3–188. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
VXI:FDC Subsystem 3–193. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
SCPI Commands for the Digital Multimeter 3–197. . . . . . . . . . . . . . . . . . . .
Command Summary 3–197. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
VX4101A MultiPaq Instrument User Manual
iii
Table of Contents
CALCulate Subsystem 3–202. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
CALibrate Subsystem 3–212. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
CONFigure Subsystem 3–218. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
FETCh? Subsystem 3–221. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
INITiate Subsystem 3–223. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
INPut Subsystem 3–224. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
INSTrument Subsystem 3–225. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
MEASure? Subsystem 3–227. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
TEST Subsystem 3–233. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
READ? Subsystem 3–234. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
SENSe Subsystem 3–235. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
ST ATus? Subsystem 3–243. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
TEST Subsystem 3–245. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
TRIGger Subsystem 3–246. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
VXI:FDC Subsystem 3–251. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
SCPI Commands for the Relay Drivers 3–255. . . . . . . . . . . . . . . . . . . . . . . .
Command Summary 3–255. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
ROUT e Subsystem 3–255. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
ST ATus? Subsystem 3–257. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
SCPI Commands for the SurePatht Modules 3–259. . . . . . . . . . . . . . . . . . . .
Command Summary 3–259. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
INITiate Subsystem 3–261. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
INSTrument Subsystem 3–262. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
ROUT e Subsystem 3–264. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
ST ATus Subsystem 3–286. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
TEST Subsystem 3–287. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
TRIGger Subsystem 3–288. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
IEEE-488.2 Common Commands 3–293. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
*CLS 3–293. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
*ESE 3–294. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
*ESR 3–294. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
*IDN? 3–295. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
*OPC 3–296. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
*RST 3–297. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
*SRE 3–301. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
*STB? 3–302. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
*TRG 3–302. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
*TST? 3–303. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
*WAI 3–304. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Status and Events
iv
Status and Event Reporting System 4–1. . . . . . . . . . . . . . . . . . . . . . . . . . .
STATus and Event Commands 4–7. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
STATus 4–8. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
STATus : OPERation : ENABle 4–9. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
STATus : OPERation [:EVENt]? 4–10. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
STATus : OPERation : NTRansition 4–11. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
STATus : OPERation : PTRansition 4–12. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
STATus : QUEue : ENABle <numeric list> 4–13. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
STATus : QUEue [:NEXT]? 4–14. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
STATus : QUEStionable [:EVENt]? 4–15. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
VX4101A MultiPaq Instrument User Manual
Appendices
Table of Contents
STATus : QUEStionable : CONDition? 4–16. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
STATus : QUEStionable : ENABle 4–17. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
STATus : QUEStionable : NTRansition 4–18. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
STATus : QUEStionable : PTRansition 4–19. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Status Subsystem Example 4–20. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Appendix A: Specifications A–1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
VX4101A General Characteristics A–1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Over Voltage Indication A–3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Universal Counter Specifications A–4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Digital Multimeter (DMM) Specifications A–14. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Digital Input and Output (Option 1D) A–24. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Digital to Analog Converter (DAC) (Option 1A) A–25. . . . . . . . . . . . . . . . . . . . . . . .
Relay Drivers (Option 1D) A–26. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
SurePath Specifications A–26. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Certifications and Compliances A–27. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Appendix B: Input/Output Connections B–1. . . . . . . . . . . . . . . . . . . . . . . .
Appendix C: Instrument I/O Operation C–1. . . . . . . . . . . . . . . . . . . . . . . .
Configuration Registers C–2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
VMEbus Interrupt Level Selection C–3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Appendix D: Counter Architecture D–1. . . . . . . . . . . . . . . . . . . . . . . . . . . .
Appendix E: Obsolete Commands E–1. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Counter Commands E–1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Appendix F: Performance Verification Procedure F–1. . . . . . . . . . . . . . . .
Semi-Automated PVP Procedures F–1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Manual PVP Procedures F–1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Appendix G: Calibration G–1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Calibration for the DMM G–1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
DC Mode Calibration Procedure G–2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
TRMS AC (DC Coupled) Mode Calibrations G–6. . . . . . . . . . . . . . . . . . . . . . . . . . .
Resistance Mode Calibration Procedure G–8. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Current Mode Calibration Procedure G–12. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Calibration for the Counter G–13. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Calibration for the Digital to Analog Converter G–19. . . . . . . . . . . . . . . . . . . . . . . . .
DAC Calibration Procedure G–21. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Calibration for the Digital Input G–23. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Digital Input Calibration Procedure G–24. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Appendix H: User Service H–1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Appendix I: Replaceable Parts I–1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Parts Ordering Information I–1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Using the Replaceable Parts List I–2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Glossary and Index
VX4101A MultiPaq Instrument User Manual
v
Table of Contents
List of Figures
Figure 1–1: VX4101A VXIbus Connectors, Fuses, and
Switch Locations 1–7. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Figure 1–2: VX4101A Front Panel 1–8. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Figure 1–3: Module Installation 1–16. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Figure 2–1: Typical FDC Process 2–14. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Figure 4–1: VX4101A Standard Registers 4–2. . . . . . . . . . . . . . . . . . . . . .
Figure 4–2: Instrument Operational Status Registers 4–3. . . . . . . . . . . . .
Figure I–1: VX4101A Exploded View I–6. . . . . . . . . . . . . . . . . . . . . . . . . .
Figure I–2: VX4101A Delay Line Cable Dress I–7. . . . . . . . . . . . . . . . . . .
vi
VX4101A MultiPaq Instrument User Manual
List of Tables
Table of Contents
Table 1–1: VX4101A Performance Options 1–2. . . . . . . . . . . . . . . . . . . . .
Table 1–2: Standard Accessories 1–12. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Table 1–3: Optional Accessories 1–12. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Table 1–4: VX4101A Performance Options 1–13. . . . . . . . . . . . . . . . . . . . .
Table 1–5: Instrument-Specific Files 1–18. . . . . . . . . . . . . . . . . . . . . . . . . .
Table 1–6: Commands Available at Power-On 1–22. . . . . . . . . . . . . . . . . .
Table 2–1: VX4101A Global Trigger Sources 2–9. . . . . . . . . . . . . . . . . . .
Table 2–2: VX4101A Counter-Specific Trigger Sources 2–10. . . . . . . . . . .
Table 2–3: VX4101A Fixed Trigger Sources for the DMM, DAC,
Digital Input and Digital Output 2–11. . . . . . . . . . . . . . . . . . . . . . . . . .
Table 3–1: Commands Available at Power-On 3–21. . . . . . . . . . . . . . . . . .
Table 3–2: Trigger Resolution (in ms) 3–27. . . . . . . . . . . . . . . . . . . . . . . . .
Table 3–3: Input Calibration Source Settings 3–60. . . . . . . . . . . . . . . . . . .
Table 3–4: Optimum Sensitivity Settings 3–84. . . . . . . . . . . . . . . . . . . . . . .
Table 3–5: Limits of Calibration Input 3–215. . . . . . . . . . . . . . . . . . . . . . . .
Table 3–6: Meaning of Returned String 3–221. . . . . . . . . . . . . . . . . . . . . . . .
Table 3–7: MEASure:VOLTage[DC]? and <Expected Value>
ranges 3–230. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Table 3–8: MEASure:VOLTage:AC? and <Expected Value>
ranges 3–230. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Table 3–9: MEASure:CURRent? and <expected value> ranges 3–231. . . .
Table 3–10: MEASure:RESistance? and MEASure:FRESistance
and <Expected Value> ranges 3–231. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Table 3–11: VX4101A Reset Values 3–297. . . . . . . . . . . . . . . . . . . . . . . . . . .
Table 3–12: Counter Front Panel Arm Reset Values 3–297. . . . . . . . . . . . .
Table 3–13: Counter Channels 1 & 2 Analog Front-End 3–297. . . . . . . . . .
Table 3–14: Counter Measurement Settings 3–298. . . . . . . . . . . . . . . . . . . .
Table 3–15: DMM Calibration Settings 3–298. . . . . . . . . . . . . . . . . . . . . . . .
Table 3–16: DMM Measurement Settings 3–298. . . . . . . . . . . . . . . . . . . . . .
Table 3–17: Digital Input Settings 3–299. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Table 3–18: Digital Output Settings 3–299. . . . . . . . . . . . . . . . . . . . . . . . . . .
Table 3–19: Digital to Analog Converter (DAC) Settings 3–300. . . . . . . . . .
Table 3–20: SurePath Settings 3–300. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Table 4–1: Instrument Operational Status Register 4–3. . . . . . . . . . . . . .
VX4101A MultiPaq Instrument User Manual
vii
Table of Contents
Table 4–2: VX4101 A Operational Status Register 4–5. . . . . . . . . . . . . . .
Table 4–3: Status Byte Register 4–6. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Table 4–4: IEEE 488.2 Standard Event Status Register 4–6. . . . . . . . . . .
Table 4–5: Status Subsystem and Service Requests 4–20. . . . . . . . . . . . . .
Table A–1: VXI Instrument Characteristics A–1. . . . . . . . . . . . . . . . . . . . .
Table A–2: Power Supply Voltage and Current A–1. . . . . . . . . . . . . . . . . .
Table A–3: Environmental/Reliability Characteristics A–2. . . . . . . . . . . .
Table A–4: VX4101A-Specific Characteristics A–2. . . . . . . . . . . . . . . . . .
Table A–5: VX4101A-Specific Physical Characteristics A–3. . . . . . . . . . .
Table A–6: Universal Counter General Specifications A–4. . . . . . . . . . . .
Table A–7: Channel 1 and 2 Frequency A–4. . . . . . . . . . . . . . . . . . . . . . . .
Table A–8: Channel 1 and 2 Period A–5. . . . . . . . . . . . . . . . . . . . . . . . . . .
Table A–9: Channel 3 Frequency (Option 2C) A–5. . . . . . . . . . . . . . . . . .
Table A–10: Channel 3 Period (Option 2C) A–5. . . . . . . . . . . . . . . . . . . . .
Table A–11: Time Interval A–6. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Table A–12: Frequency Ratio A–6. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Table A–13: Channels 1 and 2 Totalizer A–6. . . . . . . . . . . . . . . . . . . . . . . .
Table A–14: Channels 1 and 2 Rise/Fall Time A–6. . . . . . . . . . . . . . . . . . .
Table A–15: Channels 1 and 2 Positive/Negative Pulse Width A–7. . . . .
Table A–16: Frequency Ratio 1/2,2/1,3/1,3/2,1/3,2/3 A–7. . . . . . . . . . . . . .
Table A–17: Voltages A–7. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Table A–18: Channels 1 and 2 Input Characteristics A–7. . . . . . . . . . . . .
Table A–19: Channel 3 Input Characteristics (Option 2C) A–8. . . . . . . .
Table A–20: Arm Characteristics A–9. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Table A–21: Channel 1 and 2 Trigger Level A–9. . . . . . . . . . . . . . . . . . . .
Table A–22: Channels 1 and 2 Autotrigger A–9. . . . . . . . . . . . . . . . . . . . .
Table A–23: Front Panel Connectors A–9. . . . . . . . . . . . . . . . . . . . . . . . . .
Table A–24: TimeBase Characteristics (Option 1T) A–10. . . . . . . . . . . . . .
Table A–25: Gate Input Trigger A–10. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Table A–26: VXIBus TTLTRG Gate Input A–11. . . . . . . . . . . . . . . . . . . . .
Table A–27: Software Gate/Trigger A–11. . . . . . . . . . . . . . . . . . . . . . . . . . .
Table A–28: Gate Duration Modes A–11. . . . . . . . . . . . . . . . . . . . . . . . . . .
Table A–29: Measurement Throughput A–11. . . . . . . . . . . . . . . . . . . . . . .
Table A–30: Counter Specifications Terms A–12. . . . . . . . . . . . . . . . . . . . .
Table A–31: Aperture Specifications A–14. . . . . . . . . . . . . . . . . . . . . . . . . .
Table A–32: Digits vs. Aperture A–14. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Table A–33: Memory Capacity A–14. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Table A–34: DC Voltage A–14. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
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VX4101A MultiPaq Instrument User Manual
Table of Contents
Table A–35: Accuracy Specifications for 2-Second Aperture A–14. . . . . .
Table A–36: Accuracy Specification for v 1 Millisecond Aperture A–15. .
Table A–37: DC Input Resistance A–16. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Table A–38: DC Input Protection A–16. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Table A–39: CMRR A–16. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Table A–40: DC CMRR (0 to 400 Hz) A–16. . . . . . . . . . . . . . . . . . . . . . . . .
Table A–41: DC Normal Mode Rejection (50/60/400 Hz) A–16. . . . . . . . . .
Table A–42: DC ECMR (50/60/400 Hz) A–17. . . . . . . . . . . . . . . . . . . . . . . .
Table A–43: TRMS AC Voltage (DC Coupled and AC Coupled) A–17. . .
Table A–44: TRMS Accuracy Specifications –24-Hour A–17. . . . . . . . . . .
Table A–45: TRMS Accuracy–90 Day and 1 Year A–18. . . . . . . . . . . . . . .
Table A–46: TRMS Crest Factor A–18. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Table A–47: TRMS Input Impedance A–18. . . . . . . . . . . . . . . . . . . . . . . . .
Table A–48: TRMS Input Protection – V+ to V–, V+ to Chassis, and
V– to Chassis A–19. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Table A–49: TRMS CMRR (0 to 400 Hz) A–19. . . . . . . . . . . . . . . . . . . . . . .
Table A–50: Resistance (2-Wire and 4-Wire) A–19. . . . . . . . . . . . . . . . . . .
Table A–51: Resistance Accuracy Specifications for 2-Second
Aperture A–20. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Table A–52: Resistance Accuracy Specifications for 1 Millisecond
Aperture A–20. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Table A–53: Resistance Input Protection-All Ranges A–22. . . . . . . . . . . . .
Table A–54: DC Current A–22. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Table A–55: DC Current Sense Resistance A–22. . . . . . . . . . . . . . . . . . . . .
Table A–56: DC Current Accuracy Specifications for 2-Second
Aperture A–22. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Table A–57: DC Current Accuracy Specifications for 1 Millisecond
Aperture A–23. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Table A–58: Digital Input Characteristics A–24. . . . . . . . . . . . . . . . . . . . . .
Table A–59: Digital Output Characteristics A–24. . . . . . . . . . . . . . . . . . . .
Table A–60: Digital to Analog Converter Characteristics A–25. . . . . . . . .
Table A–61: Relay Drivers Characteristics A–26. . . . . . . . . . . . . . . . . . . . .
Table A–62: Certifications and compliances A–27. . . . . . . . . . . . . . . . . . . .
Table B–1: Digital Multimeter (DMM) Input/Output Connections B–1.
Table B–2: 160-Pin Connector Pinouts B–2. . . . . . . . . . . . . . . . . . . . . . . . .
Table C–1: Register Definitions C–2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Table G–1: DAC Pin Connections G–20. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
VX4101A MultiPaq Instrument User Manual
ix
Table of Contents
x
VX4101A MultiPaq Instrument User Manual
General Safety Summary
Review the following safety precautions to avoid injury and prevent damage to
this product or any products connected to it. To avoid potential hazards, use this
product only as specified.
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.
To Avoid Fire or
Personal Injury
Connect and Disconnect Properly . Do not connect or disconnect probes or test
leads while they are connected to a voltage source.
Ground the Product. This product is indirectly grounded through the grounding
conductor of the mainframe 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.
Observe All Terminal Ratings. To avoid fire or shock hazard, observe all ratings
and marking on the product. Consult the product manual for further ratings
information before making connections to the product.
Do not apply a potential to any terminal, including the common terminal, that
exceeds the maximum rating of that terminal.
Do Not Operate Without Covers. Do not operate this product with covers or panels
removed.
Use Proper Fuse. Use only the fuse type and rating specified for this product.
Avoid Exposed Circuitry. Do not touch exposed connections and components
when power is present.
Do Not Operate With Suspected Failures. If you suspect there is damage to this
product, have it inspected by qualified service personnel.
Do Not Operate in Wet/Damp Conditions.
Do Not Operate in an Explosive Atmosphere.
Keep Product Surfaces Clean and Dry .
Provide Proper Ventilation. Refer to the manual’s installation instructions for
details on installing the product so it has proper ventilation.
VX4101A MultiPaq Instrument User Manual
xi
General Safety Summary
Symbols and Terms
T erms in this Manual. These terms may appear in this manual:
WARNING. Warning statements identify conditions or practices that could result
in injury or loss of life.
CAUTION. Caution statements identify conditions or practices that could result in
damage to this product or other property.
T erms 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 accessible as you read the
marking.
CAUTION indicates a hazard to property including the product.
Symbols on the Product. The following symbols may appear on the product:
WARNING
High Voltage
Protective Ground
(Earth) T erminal
CAUTION
Refer to Manual
Double
Insulated
xii
VX4101A MultiPaq Instrument User 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. 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, disconnect the main power by means
of the power cord or, if provided, the power switch.
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.
To avoid electric shock, do not touch exposed connections.
VX4101A MultiPaq Instrument User Manual
xiii
Service Safety Summary
xiv
VX4101A MultiPaq Instrument User Manual
Preface
This manual assumes you are familiar with the operation of VXIbus instruments
and with the purpose and function of this instrument.
Please read and follow all instructions for installation and configuration. Use the
Installation Checklist to ensure proper installation and to record your initial
settings.
The Operating Basics section gives a summary of VXIbus operation and
presents an overview of the operation of this instrument.
The Syntax and Commands section provides a summary of all the commands
followed by detailed descriptions of each command. Appendix E: Examples
contains example programs that demonstrate the programmable features of this
instrument.
The Status and Events section contains an explanation of the Status and Event
Reporting System and lists the system messages.
The Reference Guide contains a summary of all the SCPI instrument commands.
Conventions
The names of all switches, controls, and indicators appear in this manual exactly
as they appear on the instrument.
Specific conventions for programming are given in the sections Syntax and
Commands and Appendix E: Examples.
VX4101A MultiPaq Instrument User Manual
xv
Preface
xvi
VX4101A MultiPaq Instrument User Manual
Getting Started
Product Description
This section introduces the VX4101A MultiPaqtInstrument, and includes the
following information:
H The VX4101A description explains the key features, functionality, and
instruments included with the VX4101A
H The physical description shows the locations of the fuses and indicators
H The list of accessories describes the standard and optional accessories
H The VX4101A self-test outlines the self-diagnostic routines run on each
instrument
H Information about the logical IEEE-488 address of the VX4101A
H A description of the VXIplug&play software, including the soft front panels
and device drivers that you can use to control the VX4101A
VX4101A Description
Features
TheVX4101A MultiPaqtInstrument is a C-size single slot VXI module for use
in a mainframe conforming to the VXIbus specification. The VX4101A provides
powerful functionality in a small package, and includes the following instruments needed in a typical VXI system:
H Full function Universal Counter/Timer
H Digital Input and Output
H Full function Digital Multimeter (DMM)
H Digital to Analog Converter (DAC)
H Relay Drivers
H Scanner master function for the Tektronix SurePathtfamily of VXI relay
modules
All instruments included in the VX4101A are VXI message-based. Each
function is located at the same logical address, but can be accessed and used
separately. You can access the instruments sequentially in the same manner as
multiple instruments in a typical test system. They can be set up sequentially,
then triggered and operated concurrently, with local on-instrument processing
and memory for each function. To understand the principles of operation of the
VX4101A, see Operating Basics.
VX4101A MultiPaq Instrument User Manual
1–1
Product Description
The VX4101A is programmed by issuing ASCII characters from the system
controller via the VXIbus commander and the VXIbus mainframe backplane.
Refer to the manual for the VXIbus device that will be the commander for details
on the operation of that device.
Instrument Control. You can control the instrument through either SCPI
commands or through VXIplug&play instrument drivers. The SCPI command
sets for each instrument conform to SCPI 1995 standards. The VXIplug&play
driver functions conform to 1997 standards as determined by the VXIplug&play
Alliance.
NOTE. SCPI permits a great deal of flexibility in the form in which you can enter
commands. Examples throughout this manual use various forms of the command
syntax to further illustrate these concepts.
Fast Data Channel. To maximize throughput, some of the the VX4101A
instruments support Fast Data Channel, a VXI Consortium standard protocol for
high speed block transfers of data. The VX4101A architecture implements FDC
V2.0 with a maximum of eight FDC channels per VXIbus module.
Performance Options
About the Universal
Counter
NOTE. The Digital Multimeter (DMM) and Digital to Analog Converter (DAC)
each use one FDC channel, which the VX4101A assigns at power-on.
Triggers. Each instrument in the VX4101A that supports triggering can trigger
any other instrument or the backplane TTL triggers.
You can enhance the performance of the VX4101A with the following options:
T able 1–1: VX4101A Performance Options
Description Option #
500 MHz Ch1 and Ch2 1C
3 GHz prescaler Ch3 2C
8 Ch DAC 1A
32 bit Digital I/O 1D
TCXO 1T
The Universal Counter in the VX4101A provides two input channels to make
frequency, period, rise and fall time, positive and negative pulse width, positive
and negative duty cycle, frequency ratio, totalizer, time interval, time interval
with delay by time or events, phase, and AC/DC voltage measurements.
1–2
VX4101A MultiPaq Instrument User Manual
Product Description
Measurement gating comes from one of several sources, including VXI TTL
triggers, counter front panel arm, software triggers, periodic trigger, and another
VX4101A instrument, such as SurePathtrelay switched and settled. Other key
features of the Universal Counter are as follows:
H Frequency measurements with ten-digit resolution at 1 second aperture, with
a range of 1 mHz - 250 MHz
H The option 1C extends the maximum frequency beyond 500 MHz
H 250 ns resolution (1 ps with averaging)
H Input signal conditioning: x1, x10, x100 attenuation with 0.4 to 10.0 variable
gain and up to ±100 V offset depending on attenuation, DC or AC coupling,
and 50 W or 1 MW input (with automatic over-current protection for the
50 W mode)
For more information on Counter input operations, see Appendix D: Counter
Architecture.
H Optional 3 GHz channel 3 prescaler input with option 2C
About the Digital Input
and Output Modules
H Optional temperature controlled, oscillated or crystal Clock Source (TCXO)
with Option 1T
NOTE. You can also use the VXI backplane 10 MHz clock (CLK10) as the
Counter clock source.
Both the Digital Input and Digital Output instruments provide low-speed data
exchange with 32 bits of data. The Digital Input and Output share a single 32-bit
interface on the 160-pin connector. The frequency range for both input and
output is from 3.662 Hz to 48 kHz. The Digital Input and Output instruments
include the following features:
H External handshaking
H 4K × 32 bits memory
H Pattern matching available on the Digital Input
H Programmable input threshold and selectable output voltage
H Outputs can be repeated continuously or counted a specified number of times
The module self-tests perform full read, write, and verify tests on both shared
memory and read/write control registers. The SCPI TEST subsystem provides
programming capabilities for the self-test functions.
VX4101A MultiPaq Instrument User Manual
1–3
Product Description
Digital Input. The Digital Input has a single programmable voltage threshold for
all 32 bits. The range of the input threshold voltage is from 0 volts to 20 volts.
The Digital Input has 8 K samples of digital input memory, 4 K samples each for
the pre-match pattern buffer and the post-match memory. You can query all
Digital Input settings.
Digital Output. Each of the 32 bits of digital output is programmable. Output
voltages can be set for 5 V, 12 V, or 24 V nominal operation. You can also use an
externally supplied voltage, if desired. You must set all digital output bits to the
same voltage setting. The output sample frequency range is from 3.662 Hz to
48 kHz, and applies to all 32 bits. The Digital Output has 4 K × 32 samples of
memory. You can repeat sample segments as either continuous, or with a
programmable count and repetition frequency, You can query all Digital Output
settings.
About the Digital
Multimeter (DMM)
The DMM has full function autoranging with 5 1/2 digit resolution. Measurements can be returned as single measurements, or as an array. Power cycle
averaging modes are available for 60 Hz and 50 Hz.
The device has autozero capability which minimize offset drift errors without
removing the customer input connections. The DMM has floating input isolation
of 300 VDC or AC
RMS
.
Ranges of operation are:
H Array measurements returned with up to 4096 measurements via the Fast
Data Channel Protocol.
H Over 500 programmable aperture times from 833 ms to 2 seconds
H DC voltage at 30 mV, 300 mV, 3 V, 30 V, and 300 V
H AC True RMS, either AC or DC coupled, at 30 mV
3 V
RMS
, 30 V
and 300 V
RMS
RMS
RMS
, 300 mV
RMS
,
H Four-wire or two-wire W measurement at ranges of 30 W, 300 W, 3 kW,
30 kW, 300 kW, 3 MW, 30 MW, and 300 MW
H DC Current at 150 mA and 1A
Acquisition triggering is provided from one of several sources, including VXI
TTL triggers, counter front panel arm, software triggers, periodic trigger, and
other VX4101A instrument triggers, such as the SurePathtrelay switched and
settled.
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VX4101A MultiPaq Instrument User Manual
Product Description
About the Digital to
Analog Converter
The Digital to Analog Converter (DAC) includes an eight-channel arbitrary
waveform generator. Waveform length can be generated with one to 1024 sample
points at sample rates from 3.662 to 15 kHz. Signals are generated on all eight
channels when the DAC is initiated. A default 0 VDC output will be set on
unused channels.
The VX4101A DAC includes the following features and functionality:
H Eight synchronized, 12-bit digital to analog channels synchronized to a
single programmable sample clock (3.662 Hz to 15 kHz)
H Amplitudes of –14 V to +14 V are supported with 8 mV resolution on each
channel
H Each channel is separately programmable to generate a different waveform
H Each channel has 1024 points of trace buffer memory available for waveform
synthesis
H Waveforms can be repeated either continuously or with a programmable
count and repetition frequency.
NOTE. Setting the sample rate, segment length, and repetition frequency the same
for one channel sets them for all channels.
About the Relay Drivers
About the SurePatht
Modules
The high-current relay drivers include the following:
H Eight lines of high-current outputs
H Open collector, 100 mA sink per output
The scanner master control enables you to use the VX4101A to control the
Tektronix SurePatht family of VXI relay modules, including the VX4320,
VX4330, VX4350, VX4351, and VX4380. Some of the features of the SurePatht family are as follows:
VX4320 1.3 GHz RF Multiplexor. This module is a single-wide VXIbus module
intended to switch RF and high-frequency digital signals. It is arranged as eight
1 × 4 coaxial switches with a 50 W characteristic impedance. Each 1 × 4 section
has five type SMB male snap-on subminiature coaxial connectors.
VX4330 120-Channel Scanner/Multiplexor. This module provides six 1 × 10 4-wire
multiplexor sections. Each of these six sections can be independently configured
under software control as two 1 × 10 2-wire multiplexor, a 1 × 20 2-wire
multiplexor, or as a 1 × 40 1-wire multiplexor. In addition, each section can be
VX4101A MultiPaq Instrument User Manual
1–5
Product Description
programmed to connect it to the section above or below to produce a 1 × 60
4-wire multiplexor, a 1 × 120 2-wire multiplexor, or a 1 × 240 1-wire multiplexor.
VX4350 64-Channel SPST/SPDT Switching Module. This module provides 64
independent single-pole double-throw relays. A 0 W resistor is placed in series
with the common contact of each relay. This resistor may be replaced by a
resistor with a larger value to limit the current that flows through the relay in
order to protect the relay contacts. Pads are provided for optional metal oxide
varistors (MOVs). These varistors are connected from the common contact to the
normally closed contact, and from the common contact to the normally open
contact of each relay. Using the optional MOVs protects the relay contacts from
over voltage conditions encountered when switching electrical power to
inductive loads. The optional MOVs and current limiting resistors are user
installed, and are not available as factory options.
VX4351 40-Channel, 10 Amp, SPST Switch Module. This module contains 40 SPST
(form A) relays. Each relay may be controlled independently. The contacts of
each relay are connected to one of three 30-pin high current connectors which are
mounted on the module’s front panel. Circuitry is included on the VX4351 to
verify the control signals that are applied to each relay coil driver.
VX4380 256-Crosspoint Relay Matrix Module. This module provides four 4 × 16
2-wire matrix sections. Each section can be configured to connect either the four
rows or the sixteen columns to the section above or below it to produce up to a
16 × 16 2-wire matrix or a 4 × 64 2-wire matrix.
The VX4101A SurePathMaster provides serial I/O interface for control of
SurePath relay modules. It also monitors the power fuses of all SurePath
Relay modules, and provides a serial input interface to identify each module that
it controls.
NOTE. There is a query for the VX4101A which will return a list of the
SurePath family relay modules that the VX4101A SurePath Master detects in
the system.
1–6
VX4101A MultiPaq Instrument User Manual
Power-On Sequence
Physical Description
Product Description
The power-on sequence of the VX4101A meets the timing requirements of the
VXIbus specification that communications may begin even if the instrument has
not completely initialized. At either power-on or a VXIbus reset, the VX4101A
initializes the VXIbus interface and all hardware and firmware necessary to begin
communication. For more information, see Powering On the VX4101A in
Installation.
Figure 1–1 shows the VX4101A switches and fuses, and Figure 1–2 shows the
front panel.
Switches as viewed
F652 F651F01
from the rear of instrument
(labels are on the back shield)
F75
LOGICAL
ADDRS
HI
LO
F1351
F1352
F1451
Figure 1–1: VX4101A VXIbus Connectors, Fuses, and Switch Locations
VX4101A MultiPaq Instrument User Manual
1–7
Product Description
Controls and Indicators
1–8
Figure 1–2: VX4101A Front Panel
The following logical address switches must be correctly set to ensure proper
operation. Refer to Figure 1–1 for their physical locations.
Logical Address Switches. The VX4101A supports VXI dynamic addressing. It is
shipped with the switches set to FF so that the Slot 0 will automatically assign
an address to the module.
Each functional module in a VXIbus System must be assigned a unique logical
address, from 1 to decimal 255 (hexadecimal FF).
VX4101A MultiPaq Instrument User Manual
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