Keysight VXI 75000 С Series User Manual

75000 Series C

User Manual

Keysight E1442A 64-Channel

Form C Switch Module

Notices

© Keysight Technologies, Inc. 2019

No part of this manual may be repro duced in any form or by any means

(including electronic storage and retrieval or translation into a foreign language) without prior agreement and written con sent from Keysight Technologies, Inc. as governed by United States and interna tional copyright laws.

Manual Part Number

E1442-90003

Edition

Fourth Edition, October 2019

Published by

Keysight Technologies, Inc.

900 S. Taft Ave.

Loveland, CO 80537 USA

Sales and Technical Support

To contact Keysight for sales and techni cal support, refer to the support links on the following Keysight websites: www.keysight.com/find/E1442A

(product-specific information and sup port, software and documentation updates) www.keysight.com/find/assist (world wide contact information for repair and service)

Declaration of Conformity

Declarations of Conformity for this prod uct and for other Keysight products may be downloaded from the Web. Go to http://keysight.com/go/conformity and click on “Declarations of Conformity.” You can then search by product number to find the latest Declaration of Conformity.

Technology Licenses

The hardware and/or software described in this document are furnished under a license and may be used or copied only in accordance with the terms of such license.

Warranty

THE MATERIAL CONTAINED IN THIS

DOCUMENT IS PROVIDED “AS IS,” AND

IS SUBJECT TO BEING CHANGED,

WITHOUT NOTICE, IN FUTURE EDI -

TIONS. FURTHER, TO THE MAXIMUM

EXTENT PERMITTED BY APPLICABLE

LAW, KEYSIGHT DISCLAIMS ALL WAR -

RANTIES, EITHER EXPRESS OR IMPLIED,

WITH REGARD TO THIS MANUAL AND

ANY INFORMATION CONTAINED

HEREIN, INCLUDING BUT NOT LIMITED

TO THE IMPLIED WARRANTIES OF MER -

CHANTABILITY AND FITNESS FOR A

PARTICULAR PURPOSE. KEYSIGHT

SHALL NOT BE LIABLE FOR ERRORS OR

FOR INCIDENTAL OR CONSEQUENTIAL

DAMAGES IN CONNECTION WITH THE

FURNISHING, USE, OR PERFORMANCE

OF THIS DOCUMENT OR OF ANY INFOR -

MATION CONTAINED HEREIN. SHOULD

KEYSIGHT AND THE USER HAVE A SEP -

ARATE WRITTEN AGREEMENT WITH

WARRANTY TERMS COVERING THE

MATERIAL IN THIS DOCUMENT THAT

CONFLICT WITH THESE TERMS, THE

WARRANTY TERMS IN THE SEPARATE

AGREEMENT SHALL CONTROL.

Keysight Technologies does not warrant third-party system-level (combination of chassis, controllers, modules, etc.) per formance, safety, or regulatory compli ance unless specifically stated.

DFARS/Restricted Rights

Notices

If software is for use in the performance of a U.S. Government prime contract or subcontract, Software is delivered and licensed as “Commercial computer soft ware” as defined in DFAR 252.227-7014

(June 1995), or as a “commercial item” as defined in FAR 2.101(a) or as “Restricted computer software” as defined in FAR

52.227-19 (June 1987) or any equivalent agency regulation or contract clause.

Use, duplication or disclosure of Software is subject to Keysight Technologies’ stan dard commercial license terms, and non-

DOD Departments and Agencies of the

U.S. Government will receive no greater than Restricted Rights as defined in FAR

52.227-19(c)(1-2) (June 1987). U.S. Gov ernment users will receive no greater than Limited Rights as defined in FAR

52.227-14 (June 1987) or DFAR 252.227-

7015 (b)(2) (November 1995), as applica ble in any technical data.

Safety Information

The following general safety precau tions must be observed during all phases of operation of this instrument.

Failure to comply with these precau tions or with specific warnings or oper ating instructions in the product manuals violates safety standards of design, manufacture, and intended use of the instrument. Keysight Technolo gies assumes no liability for the cus tomer's failure to comply with these requirements.

General

Do not use this product in any manner not specified by the manufacturer. The protec tive features of this product must not be impaired if it is used in a manner specified in the operation instructions.

Before Applying Power

Verify that all safety precautions are taken.

Make all connections to the unit before applying power. Note the external markings described under “Safety Symbols”.

Ground the Instrument

Keysight chassis’ are provided with a grounding-type power plug. The instrument chassis and cover must be connected to an electrical ground to minimize shock hazard. The ground pin must be firmly connected to an electri cal ground (safety ground) terminal at the power outlet. Any interruption of the protective (grounding) conductor or disconnection of the protective earth terminal will cause a potential shock hazard that could result in per sonal injury.

Do not operate the module/chassis in the presence of flammable gases or fumes.

Do not operate the module/chassis in the presence of flammable liquids or near containers of such liquids.

Cleaning

Clean the outside of the Keysight mod ule/chassis with a soft, lint-free, slightly dampened cloth. Do not use detergent or chemical solvents.

Do Not Remove Instrument Cover

Only qualified, service-trained person nel who are aware of the hazards involved should remove instrument covers. Always disconnect the power cable and any external circuits before removing the instrument cover.

Keep away from live circuits

Operating personnel must not remove equipment covers or shields. Proce dures involving the removal of covers and shields are for use by servicetrained personnel only. Under certain conditions, dangerous voltages may exist even with the equipment switched off. To avoid dangerous elec trical shock, DO NOT perform proce dures involving cover or shield removal unless you are qualified to do so.

DO NOT operate damaged equipment

Whenever it is possible that the safety protection features built into this prod uct have been impaired, either through physical damage, excessive moisture, or any other reason, REMOVE POWER and do not use the product until safe operation can be verified by servicetrained personnel. If necessary, return the product to a Keysight Technologies

Sales and Service Office for service and repair to ensure the safety features are maintained.

DO NOT block the primary disconnect

The primary disconnect device is the appliance connector/power cord when a chassis used by itself, but when installed into a rack or system the dis connect may be impaired and must be considered part of the installation.

Do Not Modify the Instrument

Do not install substitute parts or per form any unauthorized modification to the product. Return the product to a

Keysight Sales and Service Office to ensure that safety features are main tained.

In Case of Damage

Instruments that appear damaged or defective should be made inoperative and secured against unintended oper ation until they can be repaired by qualified service personnel

Do NOT block vents and fan exhaust:

To ensure adequate cooling and venti lation, leave a gap of at least 50mm

(2") around vent holes on both sides of the chassis.

Do NOT operate with empty slots: To ensure proper cooling and avoid dam aging equipment, fill each empty slot with an AXIe filler panel module.

Do NOT stack free-standing chassis:

Stacked chassis should be rack mounted.

All modules are grounded through the chassis: During installation, tighten each module's retaining screws to secure the module to the chassis and to make the ground connection.

Operator is responsible to maintain safe operating conditions. To ensure safe operating conditions, modules should not be operated beyond the full temperature range specified in the

Environmental and physical specifica tion. Exceeding safe operating condi tions can result in shorter lifespan, improper module performance and user safety issues. When the modules are in use and operation within the specified full temperature range is not maintained, module surface tempera tures may exceed safe handling condi tions which can cause discomfort or burns if touched. In the event of a module exceeding the full temperature range, always allow the module to cool before touching or removing modules from the chassis.

iv

Safety Symbols

A CAUTION denotes a hazard. It calls attention to an operating pro cedure or practice, that, if not cor rectly performed or adhered to could result in damage to the product or loss of important data.

Do not proceed beyond a CAUTION notice until the indicated condi tions are fully understood and met.

A WARNING denotes a hazard. It calls attention to an operating pro cedure or practice, that, if not cor rectly performed or adhered to, could result in personal injury or death. Do not proceed beyond a

WARNING notice until the indi cated conditions are fully under stood and met.

Products display the following sym bols:

Warning, risk of electric shock

Refer to manual for addi tional safety information.

Earth Ground.

Chassis Ground.

Alternating Current (AC).

Direct Current (DC) v

vi

Contents

1 Getting Started

Using This Chapter. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

Switch Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

Switch Front Panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

Switch Block Diagram. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

Terminal Module Descriptions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

Configuring the Switch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

Warnings and Cautions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

Setting the Logical Address . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

Determining the LADDR . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

Setting Interrupt Priority . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21

Using the Internal Buses. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23

Installing the Switch in a Mainframe . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25

Configuring the Terminal Modules. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26

Wiring the Terminal Modules . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26

Attaching Terminal Modules to the Switch Module . . . . . . . . . . . . . . . . . . . 29

Configuring the Option 010 Terminal Module . . . . . . . . . . . . . . . . . . . . . . . 30

Example: Straight-Through Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . 32

Example: Resistor Divider Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . 33

Programming the Switch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42

Specifying SCPI Commands . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42

Start-Up Exercises . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44

Exercise 2: Query Module Identity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45

2 E1442A Application Examples


General Scanning Information. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49

Switchbox Definition . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50

How to Scan . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50

Reset Conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51

Using Scanning Trigger Sources. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51

Using the Scan Complete Bit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51

Saving and Recalling States . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53

Saving States . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53

Recalling States . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53

Detecting Error Conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54

Example: Error Checking Using Polling . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54

Keysight E1442A User Manual vii

viii

Example: Error Checking Using Interrupts . . . . . . . . . . . . . . . . . . . . . . . . . . 54

Scanning with External Instruments . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56

3 E1442A Command Reference


Command Types. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61

Common Command Format . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61

SCPI Command Format . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61

Command Separator. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 62

Abbreviated Commands . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 62

Implied Commands . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 62

SCPI Command Reference. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 64

ABORt. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65

Subsystem Syntax. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65

Comments . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65

Example. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 66

ARM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 67


ARM:COUNt . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 67

ARM:COUNt?. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 68

DISPlay . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 69


DISPlay:MONitor:CARD . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 69

DISPlay:MONitor:CARD?. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 70

DISPlay:MONitor[:STATe] . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 70

DISPlay:MONitor[:STATe]?. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 71

INITiate . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 72


INITiate:CONTinuous. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 72

INITiate:CONTinuous? . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 73

INITiate[:IMMediate] . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 73

OUTPut . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 74


OUTPut:ECLTrgn[:STATe]. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 74

OUTPut:ECLTrgn[:STATe]? . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 74

OUTput:[EXTernal][:STATe] . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 75

OUTPut[:EXTernal][:STATe]? . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 75

OUTPut:TTLTrgn[:STATe] . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 76

OUTPut:TTLTrgn[:STATe]? . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 76

[ROUTe:] . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 77


Keysight E1442A User Manual

[ROUTe:]CLOSe. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 77

[ROUTe:]CLOSe? . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 78

[ROUTe:]OPEN . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 78

[ROUTe:]OPEN? . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 79

[ROUTe:]SCAN . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 80

[ROUTe:]SCAN:MODE. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 81

[ROUTe:]SCAN:MODE? . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 82

STATus . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 83

STATus:OPER:CONDition? . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 85

STATus:OPERation:ENABle. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 85

Example . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 85

STATus:OPERation:ENABle? . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 85

STATus:OPERation[:EVENt]?. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 86

STATus:PRESet . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 86

Subsystem Syntax . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 87

SYSTem:CDEScription? . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 87

SYSTem:CPON . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 88

SYSTem:CTYPe? . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 88

SYSTem:ERRor? . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 89

Subsystem Syntax . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 90

TRIGger[:IMMediate] . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 90

TRIGger:SOURce . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 91

TRIGger:SOURce? . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 93

SCPI Commands Quick Reference . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 94

IEEE 488.2 Common Commands Reference. . . . . . . . . . . . . . . . . . . . . . . . . . . 95

A Specifications

B Register-Based Programming

About This Appendix . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 99

Register Programming vs. SCPI Programming . . . . . . . . . . . . . . . . . . . . . . . . . 99

Addressing the Registers. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 99

The Base Address . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 100

Register-Based Programming the E1442A . . . . . . . . . . . . . . . . . . . . . . . . . . . 102

Reading or Writing to E1442A Registers . . . . . . . . . . . . . . . . . . . . . . . . . . 102

Register Access with Logical Address (Command Module) . . . . . . . . . . . 102

Register Access with Memory Mapping (Embedded Controller). . . . . . . . 103

Reading the E1442A Registers. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 103

Device Type Register . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 104

Keysight E1442A User Manual ix

Writing to E1442A Registers. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 104

Register Definitions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 106

Switch Enable Registers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 107

Programming Example. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 108

Beginning of Program . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 108

Read ID and Device

Type Registers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 109

Close and Open Channels. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 109

Reset Function . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 111

C E1442A Error Messages

Error Types . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 113

Error Messages. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 114

x Keysight E1442A User Manual

E1442A 64-Channel Form C Switch

User Guide

1

Getting Started

Using This Chapter

This chapter shows how to get started using the E1442A 64-Channel Form C

Switch Module. It gives guidelines to configure, install and program the module.

Chapter contents include:

Switch Description page 11

Configuring the Switch page 16

Configuring the Terminal Modules page 26

Programming the Switch page 42

Switch Description

The E1442A 64-Channel Form C Switch Module is a VXIbus C-Size register-based slave device that can operate in a C-Size VXIbus mainframe or in a VMEbus mainframe. The E1442A switch consists of a Form C switch module and one of three types of terminal modules (Standard, Option 010, and Option

020). The terms "Form C Switch" and "switch" refer to the E1442A switch module.

The switch "instrument" is the firmware running in the E1406 Command Module.

This firmware is the instrument driver providing Standard Commands for

Programmable Instruments (SCPI) programming capability. The term

"switchbox" refers to a switch instrument consisting of one or more switch modules.

Programming the E1442A can be done through the command module using

SCPI or via direct register access (register-based programming).

Switch Front Panel

The Form C switch consists of a component module and a terminal module. User inputs are connected to the Form C switch NO (Normally Open),

NC (Normally Closed), and C (Common) terminal connections on one of the three available terminal modules. Figure 1-1 shows the switch module front panel and the connector pinouts that mate to the terminal module.

11

Getting Started Switch Description

(Column #)

(Row #)

(32)

(a)

C

(b)

NC

(c)

NO

Channel 0

Channel 1

Channel 2

Channel 3

(Bank A)

(Bank B)

Channel 28

Channel 29

Channel 30

Channel 31 (1)

(32)

(a)

C

(b)

NC

(c)

NO

Channel 32

Channel 33

Channel 34

Channel 35

(1)

Channel 60

Channel 61

Channel 62

Channel 63

Figure 1-1 E1442A Form C Switch Front Panel

12 Keysight E1442A 64-channel Form C Switch User Manual

Switch Description Getting Started

Switch Block Diagram

Figure 1-2 is a simplified block diagram of the Form C switch with internal bus and available terminal modules (Standard, Option 010, and Option 020).

SWITCH MODULE

E1442A

64-Channel Form C Switch Module

+5V Pullup

1A Max

See "Using the Internal

Buses" for component/ jumper information when using the internal buses

Channel 00

NO

NC

C

All channels use nonlatching relays that open at power down

Channel 31

Standard

Solder-Lug

Terminal Module

CH 00

NO

NC

C

CH 31

NO

NC

C

All channels have locations to install user supplied components or jumpers to connect the NO, NC or C terminals to the internal bus

Channel 32

NO

NC

C

Use of any internal bus

(NO, NC or C) restricts the maximum switched voltage to 42 VDC or 60V Peak AC

Channel 63

NO

NC

C

CH 32

NO

NC

C

CH 63

NO

NC

C

TERMINAL MODULES

Option 010

Signal Conditioning

Terminal Module

Option 020

Form A Configuration

Terminal Module

(Screw Terminals)

Signal

Conditioning

Circuitry

And

Jumpers

C H 00

NO

NC

C

Signal

Conditioning

Circuitry

And

Jumpers

CH 31

NO

NC

C

Signal

Conditioning

Circuitry

And

Jumpers

CH 32

N O

NC

C

Signal

Conditioning

Circuitry

And

Jumpers

CH 63

NO

NC

C

CH 00

NO

C

CH 31

NO

C

CH 32

NO

C

CH 63

NO

C

Figure 1-2 E1442A Form C Switch - Simplified Block Diagram

Keysight E1442A 64-channel Form C Switch User Manual 13

Getting Started Switch Description

Terminal Module Descriptions

Figure 1-3 shows the Standard Terminal Module Form C configuration with solder lugs, the Option 010 Terminal Module Form C configuration with signal conditioning circuitry, and the Option 020 Form A Screw Terminal configuration.

Standard Configuration Option 010 Form C Option 020 Form A

Figure 1-3 Form C Switch - Terminal Modules

Figure 1-4 shows the three terminal modules and options for NO and NC connections for each terminal type. A switch (relay) is open when contact is made between the normally closed (NC) contact and common (C). A switch is closed when contact is made between the normally open (NO) and common (C).

Any combination of open or closed states is allowed at one time for all channels on the module.

Relay Open

Relay Closed

Terminal Module Type

Standard

Form C Solder Lug

Load 1

Load 2

Option 010 Form C

Signal Conditioning

Load 1

Load 2

Option 020

Form A Screw Terminal

No Connection

Load 2


Switch Description Getting Started

COM

Channel

00

NO

NC

Standard

Terminal

Module

NO

NC

COM

Loads

2

1

+V

COM

Channel

00

NO

NC

Signal

Conditioning

Circuitry

Option 010

Terminal

Module

NO

NC

COM

Loads

2

1

+V

Note:

This is a Form A switch configuration.

There is no terminal module connection to the relay's NC contact.

Figure 1-4 Terminal Module Configurations

COM

Channel

00

NO

NC

Option 020

Form A Screw

Terminal Module

NO

COM

Load

2

+V


Getting Started Configuring the Switch

Configuring the Switch

This section gives guidelines to configure the switch, including the following items. See "Configuring the Terminal Modules" for information on configuring the terminal modules.

– Warnings and Cautions

– Setting the Logical Address

– Setting Interrupt Priority

– Using the Internal Bus

– Installing the Switch in a Mainframe

Warnings and Cautions

You must observe the warnings and cautions that follow in addition to the general warnings and cautions in the front matter in this manual when installing, configuring, or removing the module.

SHOCK HAZARD. Only qualified, service-trained personnel aware of the hazards involved should install, configure, or remove the module. Disconnect all power sources from the mainframe, the terminal module and installed modules before installing or removing a module.

SHOCK HAZARD. When handling user wiring connected to the terminal module, consider the highest voltage present accessible on any terminal.

SHOCK HAZARD. Use wire with an insulation rating greater than the highest voltage which will be present on the terminal module. Do not touch any circuit element connected to the terminal module if any other connector to the terminal module is energized to more than 30 VAC RMS or 60 VDC.


Configuring the Switch Getting Started

MAXIMUM VOLTAGE/CURRENT. Maximum allowable voltage per channel terminal-to-terminal or terminal-to-chassis for the switch module is 150 Vdc or 150 Vac RMS (210 Vac peak).

Maximum current per channel is 1 Adc or 1 Aac RMS

(non-inductive). Maximum transient voltage is 1300V peak.

Maximum power input is 40 Wdc or 40 VA per channel,

320 Wdc or 320 VA per module. Exceeding any limit or use outside the parameters specified in Appendix A and by these warnings and cautions may damage the switch module and impair the protection provided by the module.

WIRING TERMINAL MODULE: When wiring to the terminal connectors on a terminal module, do not exceed a 5mm strip back of insulation to prevent the possibility of shorting to other wiring on adjacent terminals.

STATIC-SENSITIVE DEVICE. Use anti-static procedures when removing, configuring, cleaning and installing a module. Since the switch module is susceptible to static discharges, do not install the module without its metal .

CLEANING THE FRONT PANEL. Disconnect power from the mainframe and remove the module to be cleaned. Clean the front panel with a soft cloth dampened either in clean water or in water containing a mild detergent. Do not use abrasive cleaners. Do not use an excessively wet cloth or allow excessive water to migrate inside the module. Let the panel dry thoroughly before reinstalling the module.



Setting the Logical Address

The E1442A switch module logical address is set with the Logical Address Switch

(LADDR) on the module. The factory setting for the LADDR is 120. Valid addresses are from 1 to 254. The module logical address value is set by the sum of the decimal values of the switches that are CLOSED.

Example: Setting a LADDR

For example, in Figure 1-5, switches 3, 4, 5, and 6 are CLOSED. Since the decimal value of switch 3 = 8, the value of switch 4 = 16, the value of switch 5 =

32, and the value of switch 6 = 64, the LADDR set = 8 + 16 + 32 + 64 = 120.

Logical

Address

Switch

Location

LADDR = 120

Figure 1-5 Setting the Logical Address (LADDR)

OPEN = Switch Set To 0 (OFF)

CLOSED = Switch Set To 1 (On)



Determining the LADDR

To determine the logical address switch (LADDR) setting for your application, you must first decide whether the switch is to be used as a single-module switchbox or as a multiple-module switchbox. When using an E1406 Command

Module, the LADDR value must be a multiple of 8 if the module is the first module in a switchbox used with a VXIbus command module using SCPI commands.

– Single-module switchbox. The module must be addressed so it can be recognized as an instrument, such as 48, 56, etc..

– Multiple-module switchbox. In this configuration, two or more modules form the switchbox. The first module must be addressed so it can be recognized as an instrument and the other modules in the group have addresses sequentially following the first module, such as 120, 121, 122 ....

Figure 1-6 shows some examples of single- and multiple-module switchbox arrangements.For the multiple-module switchbox (top figure), the channel address ( channel_list ) has the form (@ ccnn ) where cc = card number and nn = channel number. For example, channel 45 on card number 02 is addressed by

(@245).

The multiple- and single-module switchbox (bottom figure), has two switchboxes: a multiple-module switchbox at logical address 120 and a single-module switchbox at address 48. The single-module switchbox has channel addresses of the form (@1 nn ). Its card number is 1.


Getting Started

MULTIPLE-MODULE SWITCHBOX


Card Number 01 02 03 04 05 (Valid Numbers = 01-99)

Channel Addresses: 1nn, 2nn, 3nn, 4nn, 5nn, etc. where

nn is the channel number

MULTIPLE- and SINGLE-MODULE SWITCHBOXES

Figure 1-6 Typical Switchbox Arrangements

Card Number 01 02 03 (Valid Numbers = 01-99)

Channel Addresses: 1nn, 2nn, 3nn, etc. where

nn is the channel number



Setting Interrupt Priority

Interrupts are enabled at power-up, after a SYSRESET, or after resetting the module via the control register. An interrupt is generated after any channel enable register is accessed when interrupts are enabled. The interrupt is generated approximately 13 ms after one of the registers is accessed.

The interrupt priority jumper selects which priority level will be asserted.

The interrupt priority jumper is set in position 1 as shipped from the factory. For most applications this priority level should not have to be changed.

The interrupts are disabled when set to level X. The interrupt priority jumpers are identified on the sheet metal shield. A hole has been cut into it for access.

Interrupts can also be disabled using the Control Register. See Figure 1-7 for

Interrupt Request Level Jumper locations.

To change the setting, remove the jumper or jumpers from their current position and place on the level you desire. If the card uses two 2-pin jumpers, both jumpers must be placed in the same row for proper operation. See the applicable mainframe manual to make sure backplane jumpers are configured correctly.



Interrupt

Request Level

Jumper

Location

Figure 1-7 Setting Interrupt Request (IRQ) Priority

LEVEL X = Interrupt Disabled



Using the Internal Buses

The E1442A 64-Channel Form C Switch Module contains internal buses to which you can connect any channel contact. Figure 1-8 shows channels 0 and 63 and the internal bus structure. There is a bus for the common (C), the normally closed

(NC), and the normally open (NO) contacts.

Other jumpers provide the means to connect the NC and NO contacts to a fused

+5V pull-up voltage, or to be connected as pull-downs to ground. The common can be connected to ground. Figure 1-9 shows component/jumper locations on the module.

NC, NO

Pullup

F4

JM152

Module

+5V

JM35 JM36 JM154

CH0

C

NC

CH0

Relay

C

NO

NC

C

NC

NO NO

CH63

C

NC

CH63

Relay

C

NO

NC

NO

C

NC

NO

Relay Connections

Bus Connections

Figure 1-8 Internal Bus Structure


Getting Started

Relay Connections

Bus Connections


Figure 1-9 Internal Bus Component/Jumper Locations



Installing the Switch in a Mainframe

The E1442A switch module can be installed in any slot (except Slot 0) of a C-size VXIbus mainframe. See Figure 1-10 for installation steps.

1 Set the extraction levers out.

2 Slide the E1442A into any slot

(except slot 0) until the backplane connectors touch.

4 Tighten the top and bottom screws to secure the E1442A to the mainframe.

3 Seat the E1442A into the mainframe by pushing in the extraction levers.

To remove the E1442A from the mainframe, reverse the procedure.

Figure 1-10 Installing the Switch in a VXI Mainframe


Getting Started Configuring the Terminal Modules

Configuring the Terminal Modules

This section gives guidelines to configure the Standard Form C Configuration,

Option 010 Form C Configuration, and the Option 020 Form A Configuration terminal modules, including:

– Wiring the Terminal Modules

– Attaching Terminal Modules to the Switch Module

– Configuring the Option 010 Terminal Module

Wiring the Terminal Modules

Figure 1-11 and Figure 1-12 show steps to wire terminal module s.

Maximum terminal wire size is No. 16 AWG. Wire ends should be stripped 5mm

(0.2 in.) and tinned. When wiring all channels, use a smaller gauge wire (No.

20-22 AWG).


Configuring the Terminal Modules Getting Started

1 Remove clear cover.

A. Release screws.

B. Press tab forward

and release.

Tab

2 Remove and retain wiring exit panel.

Remove 1 of the 3 wire exit panels.

3 Attach wires.

Insert wire into terminal.

Tighten screw.

5mm

0.2"

Use wire size 16-26

AWG with VW1

Flammability Rating

Channel

Number

Solder wires to

Solder-Lug.

OPTION 020

TERMINAL MODULE

Solder field wiring directly to solder eyes.

OPTION 010 TERMINAL MODULE

NOTE: Solder eyes will accept a dual 96-pin DIN-C

connector.

Then install connectors on terminal module.

See Figure 1-1 for Channel COM, NC and

NO pin-out from the switch module.

STANDARD TERMINAL MODULE

Figure 1-11 Wiring the Terminal Modules (cont’d on Figure 1-12)



4

Replace wiring exit panel and route wiring.

Keep wiring exit panel hole as small as possible.

Cut required holes in panels for wire exit

5

Replace Clear cover.

A. Hook the top cover tabs onto the fixture.

B. Press down and

tighten screws.

Tighten wraps to secure wires.

Figure 1-12 Wiring the Terminal Modules (cont’d from Figure 1-11)



Attaching Terminal Modules to the Switch Module

See Figure 1-13 for steps to attach a terminal module to the switch module.

1 Extend the extraction levers on the terminal module.

Extraction Lever

2

E1442A

Extraction Lever

Align the terminal module connectors to the E1442A connectors.

3 Apply gentle pressure to attach the terminal module to the

E1442A.

4 Push in the extraction levers to lock the terminal module onto the E1442A.

Extraction

Levers

To remove the terminal module from the E1442A, use a small screwdriver to release the two extraction levers and push both levers out simultaneously to free it from the E1442A.

Figure 1-13 Attaching a Terminal Module to the Switch Module



Configuring the Option 010 Terminal Module

This section describes the Option 010 Terminal Module. With this terminal module, you can add components to configure a variety of passive signal conditioning circuits including pullups, pulldowns, and single-ended and differential resistive dividers and filters. User inputs are connected to the module by soldering wires or components to the terminal module PC board.

Terminal Module User Connections

Figure 1-14 shows channels 0 and 1 and associated component and voltage connections (resistors, capacitors, jumpers and voltages). Note

the correlation of R0/C0 and R1/C1 with channels 0 and 1 respectively and the associated voltage node V0-7 and user-supplied resistor SIP. Figure

1-15 shows the locations of items on the terminal module.

Note: User Supplied Pullup resistors can be either

b) Resistor Pack

User Supplied

Standup Resistors

User Supplied

Resistor Pack (SIP)

To

Channels

2-7

CH1

CH0

Channel 1

NO

NC

Com

To

Channels

2-7

To

Channels

8-63

Jumper Locations For

Making A Pullup Voltage

Common To All Banks

V0-7

V8-15

V16-23

V24-31

V32-39

V40-47

V48-55

V56-63

To Channels

2-7

= PC Board Solder Hole

Module

Pullup

Voltage

Inputs

NO'

NC

Com

Channel 1

R1

C1

Component

Module

Channels

User Supplied

Divider/Filter

Components

C0

R0

Channel Pair

Configuration

Jumpers

Channel 0

NO

NC

Com

NO'

NC

Com

Channel 0

Connections for 2 of 64 Channels

Figure 1-14 Option 010 Terminal Module User Connections



Figure 1-15 Option 010 Terminal Module



Example: Straight-Through Configuration

Any channel of the terminal module can be configured as a straight-through

Form C relay. In this mode no resistors or capacitors are included. A two-position jumper is placed on the mode selection jumper. Figure 1-16 shows a typical straight-through configuration. No components are added. Set one configuration jumper as shown in Figure 1-16 (INLINE).

TERMINAL

MODULE

COM

NC

SWITCH

MODULE

COM

NC

NO

User

Wiring

To

Terminal

Module

COM

NC

NO

Channel 25

Channel Resistor

Solder Holes

Channel Capacitor

Solder Holes

Channel

Configuration

Jumpers

Channel

Number

User Supplied Resistor Packs (SIP) Locations and associated pullup voltage (for optional standup resistors)

Figure 1-16 Example: Straight-Through Configuration



Example: Resistor Divider Configuration

Any channel can be configured as a resistor divider connected to the normally open (NO) contact of the Form C relay. The user-supplied SIP resistor can be replaced by a standing resistor with it inserted in the solder hole of the SIP and a solder hole directly across from it. The row of solder holes is connected to

V24-31.

Figure 1-17 shows the voltage solder holes and identifies the voltage to which the row is connected. For this example, resistor R25 and SIP resistor pack

RP24-31 are to be added. Set one configuration jumper as shown in Figure 1-17

(LP/DIV).



User

Wiring

To

Terminal

Module

COM

NC

NO

COM

NC

NO

COM

NC

NO

R25

V24-31

TERMINAL

MODULE

SWITCH

MODULE

RP

24-31

Channel 25

Channel Resistor

Solder Holes

Channel Capacitor

Solder Holes

Channel

Configuration

Jumpers

Channel

Number


Figure 1-17 Example: Resistor Divider Configuration



Example: Low-Pass Filter Configuration

Any channel can be configured as a low-pass filter connected to the normally open contact of the Form C relay. Figure 1-18 shows a typical low-pass filter configuration. For this example, resistor R25 and capacitor C25 are to be added.

No configuration jumpers are required.

COM

NC

NO

COM

NC

NO

R25

TERMINAL

MODULE

SWITCH

MODULE

C25

V24-31

Channel 25

User

Wiring

To

Terminal

Module

COM

NC

NO

Channel Resistor

Solder Holes

Channel Capacitor

Solder Holes

Channel

Configuration

Jumpers

Channel

Number

R25

C25


Figure 1-18 Example: Low-Pass Filter Configuration



Example: Common Terminal Pullup Configuration

Any channel can be configured as a pullup (or pulldown) resistor connected to any of the contacts of the Form C relay. Figure 1-19 shows a typical channel 25 with the pullup attached to the COM contact. For this example, the SIP resistor pack RP24-31 is to be added. Set two configuration jumpers as shown in Figure

1-19 (PU COM).

Vpullup

V24-31

TERMINAL

MODULE

SWITCH

MODULE

RP

24-31

COM

NC

NO Channel 25

COM

NC

NO

User

Wiring

To

Terminal

Module

Pullup

Voltage

COM

NC

NO

Channel Resistor

Solder Holes

Channel Capacitor

Solder Holes

Channel

Configuration

Jumpers

Channel

Number


Figure 1-19 Example: Common Terminal Pullup Configuration



COM

NC

NO

User

Wiring

To

Terminal

Module

Pullup

Voltage

COM

NC

NO

Example: Normally Closed Terminal Pullup Configuration

Any channel can be configured as a pullup (or pulldown) resistor connected to any of the contacts of the Form C relay. Figure 1-20 shows channel 25 with the pullup attached to the NC contact. For this example, SIP resistor pack RP24-31 is to be added. Set two configuration jumpers as shown in Figure 1-20 (PU NC).

Vpullup

V24-31

TERMINAL

MODULE

SWITCH

MODULE

RP

24-31

COM

NC

NO Channel 25

Channel Resistor

Solder Holes

Channel Capacitor

Solder Holes

Channel

Configuration

Jumpers

Channel

Number


Figure 1-20 Example: Normally Closed Terminal Pullup Configuration



Example: Normally Open Terminal Pullup Configuration

Any channel can be configured as a pull-up (or pull-down) resistor connected to any of the contacts of the Form C relay. Figure 1-21 shows channel 25 with the pull-up attached to the NO contact. For this example, SIP resistor pack RP24-31 is to be added. Set two configuration jumpers as shown in Figure 1-21 (PU NO).

Vpullup

V24-31

TERMINAL

MODULE

SWITCH

MODULE

RP

24-31

COM

NC

NO

COM

NC

NO Channel 25

User

Wiring

To

Terminal

Module

Pullup

Voltage

COM

NC

NO

Channel Resistor

Solder Holes

Channel Capacitor

Solder Holes

Channel

Configuration

Jumpers

Channel

Number


Figure 1-21 Example: Normally Open Terminal Pull-up Configuration



Example: Divider with Filter Configuration

Any channel can be configured as a resistor divider with a low-pass filter connected to the normally open contact of the Form C relay. Figure 1-22 shows a typical divider with filter configuration. For this example, resistor R25, capacitor

C25, and SIP resistor pack R24-31 are to be added. Set one configuration jumper as shown in Figure 1-22 (LP/DIV).

TERMINAL

MODULE

SWITCH

MODULE

COM

NC

NO

COM

NC

NO

V24-31

R25

C25

RP

24-31

Channel 25

User

Wiring

To

Terminal

Module

COM

NC

NO

Channel Resistor

Solder Holes

Channel Capacitor

Solder Holes

Channel

Configuration

Jumpers

Channel

Number R25

C25


Figure 1-22 Example: Divider with Filter Configuration



Example: Differential Divider or Filter Configuration

Any channel can be configured as a differential divider (with optional filter) connected to the normally open contact of the Form C relay. The differential divider requires that two channels be used.

Figure 1-23 shows channel 24 and 25 in this configuration with the optional filter. For resistors R24 and R25, add a cross-channel capacitor for a differential filter or add a cross-channel resistor for a differential divider.

No configuration jumpers are required.


Configuring the Terminal Modules

COM

NC

NO

COM

NC

NO

COM

NC

NO

Cross-Channel

R or C

COM

NC

NO

R25

R24

C

TERMINAL

MODULE

SWITCH

MODULE

R

User

Wiring

To

Terminal

Module

CH 25

CH 24

COM

NC

NO

COM

NC

NO

Channel 25

Channel 24

Getting Started

Channel Resistor

Solder Holes

Channel Capacitor

Solder Holes

Channel

Configuration

Jumpers

Channel

Number

Differential filter:

Add Capacitor

Differential Divider:

Add Resistor


Figure 1-23 Example: Differential Divider or Filter Configuration


Getting Started Programming the Switch

Programming the Switch

This section gives guidelines and examples to program the E1442A 64-Channel

Form C switch module using Standard Commands for Programmable

Instruments (SCPI), including:

– Specifying SCPI Commands

– Start-up Exercises

Specifying SCPI Commands

To program the E1442A switch using SCPI, you must select the computer language, interface address, and SCPI commands to be used. Guidelines to select SCPI commands for the switch follow.

This discussion applies only to SCPI programming using the switchbox driver version provided with this module. See Appendix

B for information on register-based programming of switch registers.

To address specific channels within a switch, you must specify the SCPI command and switch channel address. For the Form C switch, use CLOSe

< channel_list > to connect the normally open (NO) terminal to the common (C) terminal for the channels specified.

Use OPEN < to the common (C) terminal for the channels specified. Use SCAN

< channel_list channel_list

>

> to connect the normally closed (NC) terminal

to close the set of channels specified, one channel at a time.

The Normally Open (NO) contact of each Form C relay is "open" and the

Normally Closed (NC) contact of each Form C relay is "closed" when the switch is deactivated (the Common terminal (C) is connected to NC at power-on, after reset or after an open command).

Card Numbers

The switch card number depends on the switchbox configuration (single- module or multiple-module) set for the switches. Leading zeroes can be ignored for the card number. See "Setting Logical Address" in this chapter for more information on setting logical addresses and switchbox configurations.

For a single-module switchbox, the card number is always 01. For a multiple-module switchbox, the card numbers are 01, 02,...,nn. The module with the lowest logical address is card number 01, the module with the next lowest logical address is card number 02, etc.


Programming the Switch Getting Started

For example, assume three Form C switches are configured to form a multiple-module switchbox instrument with logical addresses of 120, 121, and

122 as shown in Figure 1-24. Since card number 01 is assigned to the module with the lowest logical address, card number 01 is assigned to the card at logical address 120. Card number 02 is assigned to the card at address 121 and card number 03 is assigned to the card at address 122.

Command

Module

Card Number 01

Switch Module

Logical Address = 120

Secondary Address = 15

Card Number 02

Switch Module


Card Number 03

Switch Module


Note: Physical placement of the Module in the Logical Address

order is not required, but is recommended.

Figure 1-24 Multiple-Module Switchbox Card Numbers

Channel Addresses

Channel addresses ( channel_list ) have the form (@ ccnn ) where cc = switch card number (01-99) and nn = channel numbers (00-63).

You can address single channels (@ ccnn ), multiple channels (@ ccnn , ccnn ,...), sequential channels (@ ccnn : ccnn ), groups of sequential channels (@ ccnn : ccnn , ccnn : ccnn ) or any combination.

Form C switch channel numbers are 00 through 63. The channels can be addressed using channel numbers or channel ranges. For a single-module switchbox, channel ranges can span across the channels. For multiple- module switchboxes, channel ranges can span across the channels of all modules.

Use commas (,) to form a channel list or use a colon (:) to form a channel range.

Only valid channels can be accessed in a channel list or channel range. The channel list or channel range must be from a lower channel number to a higher channel number. For example, CLOS (@100:215) is acceptable, but CLOS

(@215:100) generates an error. Some example channel lists/ranges follow.



44

CLOS (@100,112)

OPEN (@203,210)

OPEN (@100:163)

SCAN (@100:163)

SCAN (@100:199)

! Close channels 00 and 12 on card 01

! Open channels 03 and 10 on card 02

! Open all channels on card 01

! Scan all channels on card 01

! Scan all channels on card 01

Start-Up Exercises

This section provides a set of four start-up exercises you can use to quickly get your E1442A 64-Channel Form C Switch operational, including:

– Exercise 1: Check Device Driver (E1406A only)

– Exercise 2: Query Module Identity

– Exercise 3: Perform Open, Close, and Scan Operations

– Exercise 4: Check for System Errors

We recommend you do not make user connections to the switch until you have verified correct switch operation. If you have already connected user inputs to the terminal module, you may want to remove the terminal module from the switch module while doing these exercises.

Exercise 1: Check Device Driver

If you use an E1406 Command Module, you can check the command module for the correct version of the "SWITCH" device driver for the E1442A. Skip this step and go to Exercise 2 if you do not use an E1406 Command Module.

Power-up the mainframe with the command module installed. The command module is the resource manager at logical address 0 and is typically addressed in the mainframe by 70900. Input this BASIC program into your computer.

10 DIM A$[256]

20 OUTPUT 70900;"DIAG:DRIV:LIST?"

30 ENTER 70900;A$

40 PRINT A$

50 END

RUN the program and look for the device driver

"SWITCH,SWITCHBOX,A.08.00,RAM".

RAM could be FLASH (flash ROM) depending on where the device driver is loaded. DIAGnostic:DRIVer:LIST? queries the command module at address 70900 for a list of the device drivers

Keysight E1442A 64-channel Form C Switch User Manual

Programming the Switch Getting Started loaded in the command module. A typical response should be similar to the following and will depend on the specific drivers that were previously loaded in the command module.

SYSTEM,E1406A,A.08.00,ROM;A.04.02,ROM;VOLTMTR,E1326A,

A.06.00,ROM;SWITCH,SWITCHBOX,A.08.00,RAM;COUNTER,

E1332A,A.04.02,ROM;E1333A,A.04.02,ROM;DIG_I/O,E1330A,

A.04.03,ROM;D/A,E1328A,A.04.02,ROM

The SWITCH version A.08.00 driver (or later) must appear in this list for the

E1442A. If not, you must load a new device driver. To load a new version device driver, you need your device driver version A.08.00 disk and the Installing SCPI

Device Drivers (part number E1401-90022).

For the latest information on instrument drivers, see http://www.Keysight.com/find/inst_drivers.

Exercise 2: Query Module Identity

Turn mainframe power OFF. If you want to set a logical address other than the factory-set address of 120, see "Setting the Logical Address" to set a different logical address for the switch. Install the switch module in the mainframe. See

"Installing the Switch in a Mainframe" for steps to install the switch.

If you have already connected user inputs to the terminal module, you may want to disconnect the terminal module from the switch module for this exercise. See "Attaching Terminal Modules to the

Switch Module" to disconnect the terminal module.

Turn mainframe power ON and enter the following BASIC program into your computer. For this program, the GPIB Select Code = 7, the primary address = 09, and the logical address = 120. The logical address divided by 8 = the secondary address (120/8 = 15). Thus, the instrument address is 70915.

10 DIM A$[256]

20 OUTPUT 70915;"*IDN?"

30 ENTER 70915;A$

40 PRINT A$

50 END

RUN the program. The response should be as follows. The device driver revision must be A.08.00 or later.

"HEWLETT PACKARD,SWITCHBOX,0,A.08.00"


46


Exercise 3: Perform Open, Close, and Scan Operations

This exercise performs close, open and scanning operations and queries the status byte. Now that communication with the module has been established, you can perform some close, open and scan operations and use the "SCAN

COMPLETE" bit in the Status Operation Event register

(bit 8).

Operation Event Register bit 8 designates scan complete when high. Reading this register clears the register (all bits to zero). This bit is monitored by serial polling (SPOLL) the status byte register (bit 7) in line 70. You may want to look at the STATUS command in Chapter 3 which graphically shows the relationship of these two bits and all status registers relating to this module.

Input this BASIC program into your computer. Do not input the comments preceeded by " ! ".

10 DIM A$[256] !Dimension array to hold data entered

20 OUTPUT 70915;"CLOSE (@100, 101, 102:163)" !Close all channels

30 OUTPUT 70915;"*RST" !Open all channels by resetting module

40 OUTPUT 70915;"STAT:OPER:ENAB 256" !Enable bit 8 of status

50 OUTPUT 70915;"SCAN (@100:163)" !Scan all channels

60 OUTPUT 70915;"INIT" !Initiate the scan using the default

TRIG[:IMM]

70 WHILE NOT BIT (SPOLL(70915),7) !Serial poll bit 7 of the status byte until it is high

80 PRINT "WAITING FOR SCAN COMPLETE"

90 END WHILE

100 OUTPUT 70915;"STAT:OPER?"!Query the status operation event register

110 ENTER 70915;A$!Bit 8 reported high (status byte bit 7 was high)

120 PRINT "STAT:OPER:EVENT BIT 8 = ",A$!Print response to the

STAT:OPER query

130 END

RUN the program. You should hear channel relays opening and closing, especially when a large channel list is scanned.

Exercise 4: Check for System Errors

You can add the following lines to the program in Exercise 3 to verify that no system errors were generated. It is always a good idea to check if your program causes the instrument to report any errors during program development

(such as command strings that are invalid and cause an error to be sent to the


Programming the Switch Getting Started instrument's error queue). You can read the instrument's error queue by inserting the following four program lines (all errors are read until the error queue is "+0,

No errors" ).

121 REPEAT

122 OUTPUT 70915;"SYST:ERR?"

123 ENTER 70915; A,A$ A gets the error number, A$ gets the error message

124 PRINT A,A$

125 UNTIL A=0

See "Using Interrupts With Error Checking" in Chapter 2 for detecting errors with interrupts. For example, inserting the following (incorrect) program line:

51 OUTPUT 70915;"TRIG:SOURC BUS" will cause an error to be sent to the error queue because TRIG:SOURC BUS is an incorrect command header (must be TRIG:SOUR BUS ). The instrument still functions using the default value TRIG:IMMediate . To know that an error was reported and your instrument is doing what you intended it to do, you must read the error register with a SYSTem:ERRor?

command.

You can insert this program segment at different places in your program to see where the error is generated when debugging your program if it cannot be determined from the error message or by examining the program lines. In this case, the error is returned as -113, "Undefined header" which means the command header was incorrectly specified. This error is generated by the instrument driver while trying to parse the command (the error

-113 is documented in the command module manual).





User Guide

2

E1442A Application Examples

Using This Chapter

This chapter provides application information and examples for using the

E1442A 64-Channel Form C Switch Module in a switchbox. The chapter contents are:

General Scanning Information page 49

Saving and Recalling States page 53

Detecting Error Conditions page 54

Scanning with External Instruments page 56

General Scanning Information

This section lists general scanning information for the E1442A module, including:

– Switchbox Definition

– How to Scan

– Reset Conditions

– Using Scanning Trigger Sources

– Using the Scan Complete Bit

49

E1442A Application Examples General Scanning Information

Switchbox Definition

A switchbox can consist of a single-switch module or multiple-switch modules. It can also include other switch modules that are controlled by the same SWITCH device driver. Figure 2-1 shows a typical switchbox consisting of three cards

(modules).

Command

Module

4 2

Card Number 01

Switch Module


Secondary Address = 15

Card Number 02

Switch Module


Card Number 03

Switch Module


Note: Physical placement of the Module in the Logical Address

order is not required, but is recommended.

Figure 25 Typical Switchbox Configuration

How to Scan

Scanning Form C switch channels consists of closing a set of channels

(connecting NO to C) one channel at a time. Single scan, multiple ( ARM:COUNt 2 to ARM:COUNt 32767 ) scans, or continuous INIT:CONT ) scanning modes are available. See the command reference in Chapter 3 for more information on these commands. Table 2-1 shows a number of SCPI commands that relate to scanning.

Command

ARM:COUNt

INIT

INIT:CONTinuous ON

OUTPut[:EXTernal]

[:STATe] ON

OUTPut:STATe

SCAN

TRIG

TRIGger:SOURce

Description

Sets the number of scanning cycles per INIT (optional).

Begins scanning (required).

Selects continuous scanning (optional).

Selects Trig Out port (optional).

Enables/disables Trig Out signal (optional).

Defines channels to be scanned (required).

Advances to next channel in scan list (required if using

HOLD or BUS trigger sources).

Sets the trigger source for scan advance (optional).


General Scanning Information E1442A Application Examples

Reset Conditions

At power-on or following the reset of the module ( *RST command), all 64 channels are open (common connected to the normally closed terminal).

In addition, after a *RST command the current scan channel list is invalidated.

Table 2-2 lists the parameters and default values following power-on or reset.

Parameter

ARM:COUNt

TRIGger:SOURce

INITiate:CONTinuous

OUTPut:[:STATe]

Channel State

Channel list from SCAN command

(after *RST )

Default Description

1 Number of scanning cycles is one.

IMM

OFF

OFF

Will advance scanning cycles automatically.

Number of scanning cycles is set by

ARM:COUNt .

Trigger output from EXT, TTL or ECL sources is disabled.

All 64 channels are open (channels 00 - 63).

Current channel list is invalidated following a reset of the module with the *RST command.

Using Scanning Trigger Sources

The TRIG:SOUR command specifies the source to advance the scan.

You can use the TRIG command to advance the scan when TRIG:SOUR BUS or

TRIG:SOUR HOLD is set. The OUTPut command can be used to enable the

E1406A Command Module Trig Out port.

Using the Scan Complete Bit

You can use the Scan Complete bit (bit 8) in the Operation Status Register of a switchbox to determine when a scanning cycle completes (no other bits in the register apply to the switchbox). Bit 8 has a decimal value of 256 and you can read it directly with the STAT:OPER?

command. See the

STATe:OPERational[:EVENt]?

command in Chapter 3 for an example.

When enabled by the STAT:OPER:ENAB 256 command, the Scan Complete bit will be reported as bit 7 of the Status Register. Use the GPIB Serial Poll or the

IEEE 488.2 Common command *STB? to read the Status Register.

When bit 7 of the Status Register is enabled by the *SRE Common command to assert a GPIB Service Request (SRQ), you can interrupt the computer when the

Scan Complete bit is set after a scanning cycle completes. This allows the computer to do other operations while the scanning cycle is in progress.


E1442A Application Examples General Scanning Information

The following example monitors bit 7 in the Status Register to determine when the scanning cycle completes. This example uses BASIC as the programming language. The computer interfaces with an E1406 Command Module over GPIB.

The GPIB select code is 7, the GPIB primary address is 09, and the GPIB secondary address is 15.

10 OUTPUT 70915;"*CLS" !Clear all switchbox status structure

20 OUTPUT 70915;"STAT:OPER:ENAB 256" !

En able Scan Complete Bit to set bit

7 in Status Reg

30 OUTPUT 70915;"*SRE 128" !Enable bit 7 of Status Register to assert SRQ

40 OUTPUT 70915;"TRIG:SOUR EXT" !Set to external trigger mode

50 OUTPUT 70915;"SCAN (@100:147)" !Select channels to be scanned

60 OUTPUT 70915;"INIT" !Start scanning cycle

70 WHILE NOT BIT(SPOLL(70915),7) !Waiting for scan complete

80 PRINT "DO OTHER OPERATION HERE" !Enter program lines for computer to do other oper

90 END WHILE

100 PRINT "INTERRUPT GENERATED" !Program goes to this line after interrupt is generated by a completed scanning cycle.


Saving and Recalling States E1442A Application Examples

Saving and Recalling States

This section contains information about saving and recalling a switch module state. The switchbox driver can store up to 10 states.

Saving States

The *SAV < saved: numeric_state > command saves the current instrument state. The state number (0-9) is specified in the state parameter. The following settings are

– Channel Relay State (channels 00 through 63 open or closed)

– ARM:COUNt

– TRIGger:SOURce

– OUTPut[:STATe]

– INITiate:CONTinuous

Recalling States

The *RCL < numeric_state > command recalls a previously saved state. Enter the number (0-9) in the state parameter of the desired saved state.

If *SAV was not previously executed using the selected number, the switch module will configure to the reset values (see Table 2-2).

Scan lists are not saved when a state is saved. You must re-enter your scan list after recalling a state.


E1442A Application Examples Detecting Error Conditions

Detecting Error Conditions

There are two general approaches to error checking: polling and using interrupts.

This section describes these approaches and shows an example of each approach.

Example: Error Checking Using Polling

The simplest, but most time consuming, approach to error checking is to ask the instrument whether there are errors at every step of the switching process. This is called "polling" and is illustrated in the following example.

10 DIM Err$[256]

20 OUTPUT 70915;"CLOS (@101)" !Close channel 1 switch

30 OUTPUT 70915;"SYST:ERR?" !Query for error

40 ENTER 70915;Err$ !Read response

50 IF VAL (Err$) > 0 THEN !If an error is found (Err$ not 0)

60 PRINT "Error";Err$ !Print the error

70 STOP !

Quit if error encountered

80 END IF

90 ... (PROGRAM CONTINUES)

Example: Error Checking Using Interrupts

The second approach to error checking involves the use of interrupts. The following program is a method of checking for errors using interrupts as you program the switch module. The program monitors the switch's Standard Event

Status Register for an error condition.

If no errors occur, the switch module functions as programmed. If errors do occur, the switch module interrupts the computer, and the error codes and messages are read from the error queue. This BASIC programming example has a single switch module at address 70915.

10

20

30

40 ON INTR 7 CALL Errmsg !

Call to print out error message

50 ENABLE INTR7:2

60

70

80

90

100 OUTPUT 70915;"*SRE 32" !Enables the standard event summary bit SRE

110 OUTPUT 70915;"*ESE 60" !Enables all parser generated errors

!See STATus command figure


Detecting Error Conditions E1442A Application Examples

120

130

140

.

.

190 END

200 !

210

220

230

240

250 SUB Errmsg ! Define interrupt service routine

260 DIM A$[256] ! Declare response string

270 CLEAR 70915 ! Clear the switch module

280 B = SPOLL(70915) ! Fetch status byte

290 REPEAT ! Repeat

300 OUTPUT 70915;"SYST:ERR?" ! Query for error

310 ENTER 70915;Code,A$ ! Read response

320 PRINT Code,A$ ! Print error

330 UNTIL Code=0 ! Keep querying for an error until error code = 0

340 OUTPUT 70915;"*CLS" ! Clear status registers/error queue

350 STOP

360 SUBEND


E1442A Application Examples Scanning with External Instruments

Scanning with External Instruments

Scanning Form C switch channels has the same effect as executing multiple

CLOSe commands. Thus, scanning is useful when the outputs from a number of devices under test (DUTs) are to be measured with an instrument. Three examples using BASIC programming language follow.

Example: Scanning with External Device

This example uses the E1406 Command Module Trig Out port to synchronize the

Form C switch channel closures to an external measurement device. See Figure

2-2 for typical user connections.

To DUTs

E1442A

DUT

Common

Low

E1406A

E1401 Mainframe

Trig

In

Trig

Out

NO

C

NC

NO

C

NC

NO

C

NC

HI

HI

3458 Voltmeter

LO I

LO G

Ext Out

(VM Comp)

Ext Trig

Figure 26 Example: Scanning with an External Device

For measurement synchronization, the E1406A Trig Out port is connected to the external instrument (3458 Voltmeter) External Trigger In port. For this example, the mainframe and instrument are connected via GPIB with the mainframe at address 709 and the measurement instrument at address 722.

The Form C switch is at logical address 120 (secondary address 15 and therefore address through the mainframe at address 70915). The measurements are transferred directly to the computer. Appropriate instrument commands must be added to line 10. Also, you may need to add a WAIT statement as line 65 for long measurements. The sequence of operations is:

1 INIT (line 50) closes channel 100.

2 Closure causes trigger output from the Trig Out port.

3 Trigger to Ext Trig In initiates channel 100 measurement.

4 Result is sent to the computer (lines 60-80).


Scanning with External Instruments E1442A Application Examples

5 TRIGGER (line 90) advances the scan to channel 101.

6 Steps 2-5 are repeated for channels 101-102.

10 OUTPUT 722;"TRIG EXT;...." ! Configure instrument

20 OUTPUT 70915;"OUTP ON" ! Enable Trig Out port

30 OUTPUT 70915;"TRIG:SOUR BUS" ! GPIB bus triggering

40 OUTPUT 70915;"SCAN (@100:102)" ! Scan channels 00-02

50 OUTPUT 70915;"INIT" ! Enable scan.

60 FOR I=1 TO 3 ! Start count loop

70 ENTER 722;A ! Enter reading

80 PRINT A

90 TRIGGER 70915 ! Advance scan

100 NEXT I ! Increment count

110 END

Example: Scanning Using Trig Out and Trig In Ports

This example uses the E1406A Command Module Trig Out and Trig In ports to synchronize Form C switch channel closures with an external measurement device. See Figure 2-3 for typical user connections.

To DUTs

E1442A

DUT

Common

Low

E1406A

E1401 Mainframe

Trig

In

Trig

Out

NO

C

NC

NO

C

NC

NO

C

NC

3458 Voltmeter

HI LO I

HI LO G

Ext Out

(VM Comp)

Ext Trig

Figure 27 Example: Scanning Using Trig Out and Trig In Ports


58


For this example, the mainframe and measurement instrument are connected via

GPIB with a mainframe at address 709 and the measurement instrument at address 722. The Form C switch logical address is 120 (secondary address =

120/8 = 15 and therefore addressed through the mainframe at 70915).

With this example, since synchronization with the computer cannot be ensured, the external instrument must have internal memory capacity to store the readings. Also, you must add the appropriate instrument commands to line 10.

The sequence of operation is:

1 INIT (line 50) closes channel 100.

2 Closure causes trigger to be output from Trig Out port.

3 Trigger to Ext Trig In initiates channel 100 measurement.

4 Channel 100 measurement result stored in instrument.

5 Trigger is then output from Measurement Complete port.

6 Trigger to Event In port advances scan to channel 101.

Steps 2-6 are automatically repeated for channels 101-102.

10 OUTPUT 722;"TRIG EXT; .... " ! Configure voltmeter

20 OUTPUT 70915;"OUTP ON" ! Enable Trig Out port

30 OUTPUT 70915;"TRIG:SOUR EXT" ! Event In triggering

40 OUTPUT 70915;"SCAN (@l00:102)" ! Scan channels 00-02

50 OUTPUT 70915;"INIT" ! Enable scan.

60 FOR Chan = 1 to 3

70 PRINT "Channel", Chan, Result 80 NEXT Chan

90 OUTPUT 70915;"*RST" ! Reset module and open last

! switch closed

100 END

Example: Synchronizing the Form C Switch

This example discusses synchronizing the switch to other instruments when making measurements. The following example uses the switch module to switch a signal to be measured by a multimeter. The program verifies that the switching is complete before the multimeter begins a measurement.

The measurement setup consists of a Digital Multimeter with a GPIB select code

= 7, primary address = 09 and secondary address = 03 (addressed as 70903) and an E1442A with a GPIB select code = 7, primary address = 09 and secondary address = 15 (addressed as 70915).

10 OUTPUT 70915;"CLOS (@100)" ! Close channel 100

20 OUTPUT 70915;"*OPC?" ! Wait for completion of close ! command

30 ENTER 70915;Opc_value ! Read response to *OPC? command.

31 !


Scanning with External Instruments E1442A Application Examples

32 ! Channel is closed and the measurement can be made.

33 !

40 OUTPUT 70903;"MEAS:VOLT:DC?" ! Make VM measurement

50 ENTER 70903;Meas_value ! Read the measurement

60 PRINT Meas_value ! Print the measurement

70 END





User Guide

3

E1442A Command Reference

Using This Chapter

This chapter describes Standard Commands for Programmable Instruments

(SCPI) and summarizes IEEE 488.2 Common (*) commands applicable to the

E1442A 64-Channel Form C Switch Module. This chapter contains the following sections:

Command Types page 61

SCPI Command Reference page 64

SCPI Commands Quick Reference page 94

IEEE 488.2 Common Commands Reference page 95

Command Types

Commands are separated into two types: IEEE 488.2 Common commands and

SCPI commands.

Common Command Format

The IEEE 488.2 standard defines the Common commands that perform functions like reset, self-test, status byte query, etc. Common commands are four or five characters in length, always begin with the asterisk character (*), and may include one or more parameters. The command keyword is separated from the first parameter by a space character. Some examples of Common commands are shown below:

*RST *ESR 32 *STB?

SCPI Command Format

The SCPI commands perform functions like closing switches, making measurements, and querying instrument states or retrieving data. A subsystem command structure is a hierarchical structure that usually consists of a top level

(or root) command, one or more lower-level commands, and their parameters.

The following example shows part of a typical subsystem:

[ROUTe:]

CLOSe<channel_list>

SCAN <channel_list>

:MODE?

61

62

E1442A Command Reference Command Types

[ROUTe: ]is the root command, CLOSe and SCAN are second-level commands with parameters, and :MODE? is a third-level command.

Command Separator

A colon (:) always separates one command from the next lower-level command as shown below:

[ROUTe:]SCAN:MODE?

Colons separate the root command from the second-level command

[ROUTe:]SCAN) and the second level from the third level (SCAN:MODE?).

Abbreviated Commands

The command syntax shows most commands as a mixture of upper- and lowercase letters. The uppercase letters indicate the abbreviated spelling for the command. For shorter program lines, send the abbreviated form. For better program readability, you may send the entire command. The instrument will accept either the abbreviated form or the entire command.

For example, if the command syntax shows MEASure, then MEAS and MEASURE are both acceptable forms. Other forms of MEASure such as MEASU or MEASUR will generate an error. You may use upper- or lowercase letters. Therefore,

MEASURE, measure, and MeAsUrE are all acceptable.

Implied Commands

Implied commands are those which appear in square brackets ([ ]) in the command syntax. (Note that the brackets are not part of the command and are not sent to the instrument.) Suppose you send a second-level command but do not send the preceding implied command. In this case, the instrument assumes you intend to use the implied command and it responds as if you had sent it.

Examine the [ROUTe:] subsystem shown below:

[ROUTe:]

CLOSe<channel_list>

CLOSe?<channel_list>

OPEN<channel_list>

OPEN?<channel_list>

SCAN<channel_list>

:MODE NONE|VOLT

:MODE?


Command Types E1442A Command Reference

The root command [ROUTe:] is an implied command (indicated by square brackets [< >]). To close relays in a channel list, you can send either of the following command statements:

[ROUTe:]CLOSe (@100:107, 201, 225) or CLOSe (@100:107, 201, 225)

These commands function the same closing channels 00 through 07 on card 1 and channels 01 and 25 on card 2.

Parameters

ParameterTypes.

The following table contains explanations and examples of parameter types you might see later in this chapter.

Type

Numeric

Boolean

Discrete

Explanations and Examples

Accepts all commonly used decimal representations of numbers including optional signs, decimal points, and scientific notation.

Examples are 123, 123E2, -123, -1.23E2, .123, 1.23E-2,

1.23000E-01. Special cases include MIN, MAX and INF.

Represents a single binary condition that is either true or false. (ON,

OFF, 1.0).

Selects from a finite number of values. These parameters use mnemonics to represent each valid setting. An example is the

TRIGger:SOURce< source > command where < source > can be BUS,

EXT, HOLD, or IMM.

Optional Parameters.

Parameters shown within square brackets ([ ]) are optional parameters. (Note that the brackets are not part of the command and are not sent to the instrument.) If you do not specify a value for an optional parameter, the instrument chooses a default value.

For example, consider the ARM:COUNt? [MIN |MAX] command. If you send the command without specifying a parameter, the present setting is returned. If you send the MIN parameter, the command returns the minimum count available. If you send the MAX parameter, the command returns the maximum count available. Be sure to place a space between the command and the parameter.

Linking Commands

Linking IEEE 488.2 Common Commands with SCPI Commands.

Use a semicolon (;) between the commands. For example, *RST;OUTP ON or TRIG:SOUR HOLD;*TRG

Linking Multiple SCPI Commands.

Use both a semicolon (;) and a colon (:) between the commands. For example, ARM :COUN 1;: TRIG:SOUR EXT


E1442A Command Reference SCPI Command Reference

SCPI Command Reference

This section describes the Standard Commands for Programmable Instruments

(SCPI) commands for the E1442A. Commands are listed alphabetically by subsystem and within each subsystem.

There are two methods to send commands to the instrument. The first method is from a controller over the GPIB interface. This method will be referred to as the

"GPIB interface" in the command reference. The second method of sending commands is from a terminal connected to the E1406 Command Module

(RS-232). Commands sent this way will be referred to as "from the terminal" in the command reference.


ABORt E1442A Command Reference

ABORt

The ABORt command stops a scan in progress when the trigger sources are either TRIGger:SOURce BUS or TRIGger:SOURce HOLD. See the comments to stop a scan if trigger source is not BUS or HOLD.

Subsystem Syntax

ABORt

Comments

Channel Status After an ABORt: ABORting a scan will leave the last channel that it closed in the closed position.

Effect on Scan Complete Status Bit: ABORting a scan will not set the "scan complete" status bit.

Stopping Scans Enabled from GPIB Interface: When a scan is enabled from the GPIB interface, and the trigger source is not HOLD or BUS, you can clear the interface to stop the scan (in the BASIC programming language, this is done by executing the CLEAR command for your interface (such as CLEAR 7).

When the scan is enabled from the GPIB interface and the trigger source is

TRIGger:SOURce BUS or TRIGger:SOURce HOLD, send the ABORt command over the GPIB bus.

Clearing the GPIB interface during a scan leaves the last channel the scan closed in the closed position and does not set the "scan complete" status bit.

Stopping Scans by Using the RS-232 Terminal: You may use a terminal connected to the E1406 Command Module to stop any scan.

If the scan was started from the terminal, and the trigger source is HOLD or BUS, send the ABORt command to halt the scan. If the scan was started from the terminal and some other trigger source is being used, a Ctrl+C will send an interface CLEAR to the instrument and abort the scan. Sending Ctrl+R also sends an interface CLEAR to the instrument and additionally performs a reset (*RST) on the instrument. (See the Command Reference in the command module’s user’s manual for details on the terminal interface.)

If the scan was started from the GPIB interface but you want to stop it by using the terminal, first make sure that the correct instrument (SWITCH at desired logical address) is selected by using the terminal soft keys. Then, send a Ctrl+R .

This will send an interface CLEAR to the GPIB task, but will not place the instrument in the reset state with respect to the GPIB task. These actions will occur regardless of the trigger source setting.


E1442A Command Reference ABORt

Clearing the interface using a Ctrl+C from the terminal during a scan leaves the last channel it closed in the closed position and does not set the Scan Complete status bit.

Related Commands: ARM, INITiate:CONTinuous, [ROUTe:]SCAN, TRIGger

Example

Stopping a Scan with ABORt

TRIG:SOUR BUS

INIT:CONT ON

SCAN (@100:115)

INIT

.

.

ABOR

Bus is trigger source

Sets continuous scanning

Sets channel list

Starts scanning cycle

Aborts scan in progress


ARM E1442A Command Reference

ARM

The ARM subsystem allows a scan list to be scanned multiple times

(1 through 32767) with one INITiate command.

Subsystem Syntax

ARM

:COUNt < number > MIN | MAX

:COUNt? [MIN | MAX]

ARM:COUNt

ARM:COUNt < number > allows scanning cycles to occur a multiple of times (1 to

32767) with one INITiate command and when

INITiate:CONTinuous OFF | 0 is set.

Parameters

Name

< number >

Type numeric

Range of Values

1 - 32767 | MIN | MAX

Default Value

1

Comments

Number of Scans: Use only values between 1 (MIN) to 32767 (MAX) for the number of scanning cycles (default is MIN = 1).

Related Commands: ABORt, INITiate:IMMediate,

INITiate:CONTinuous

*RST Condition: ARM:COUNt 1

Example

Setting Ten Scanning Cycles

ARM:COUN 10

SCAN (@100:115)

INIT

Sets 10 scanning cycles

Sets channel list



E1442A Command Reference ARM

ARM:COUNt?

ARM:COUNt? [MIN | MAX] returns the current number of scanning cycles set by

ARM:COUNt. If a value between MIN and MAX is set, that value for ARM:COUNt is returned. The optional parameters MIN and MAX allow you to query the module for the these values instead of looking them up in the command reference. A 1 is returned for the MIN parameter. 32767 is returned for the MAX parameter regardless of the ARM:COUNt value set.

Parameters

Name

MIN | MAX

Type numeric

Range of Values

MIN = 1 | MAX = 32,767

Default Value current cycles

Comments

Related Commands: INITiate:IMMediate

Example

Query Number of Scanning Cycles

ARM:COUN 55

ARM :COUN?

Set 10 scanning cycles

Query number of scanning cycles. Returned value is 55.


DISPlay E1442A Command Reference

DISPlay

The DISPlay subsystem monitors the channel state of a selected module (or card) in a switchbox. The DISPlay command subsystem only operates with an RS-232 terminal connected to the E1406 Command Module’s RS-232 port. These commands control the display on the terminal, and would in most cases be typed directly from the terminal keyboard.

However, it is possible to send these commands over the GPIB interface and control the terminal’s display. In this case, care must be taken that the instrument receiving the DISPlay command is the same one that is currently selected on the terminal. Otherwise, the GPIB command will have no visible effect.

Subsystem Syntax

DISPlay

:MONitor

:CARD <number>|AUTO

:CARD?

[:STATe]<mode>

[:STATe]?

DISPlay:MONitor:CARD

DISPlay:MONitor:CARD <number>|AUTO selects the module in a switchbox to be monitored. You must use DISP:MON:STAT ON to actually display the monitored module state to the RS-232 terminal.

Parameters

Name

< number | AUTO >

Type numeric

Range of Values

1 - 99

Default Value

AUTO

Comments

Selecting a Specific Module to be Monitored: Send the card number in a switchbox with the DISPlay:MONitor:CARD command.

Selecting the Present Module to be Monitored (AUTO): Use the DISPlay:MONitor AUTO command to select the last module addressed by a switching command (e.g.,

[ROUTe:]CLOSe).

*RST Condition: DISPlay:MONitor:CARD AUTO


E1442A Command Reference DISPlay

70

Example

Select Module #2 in a Switchbox for Monitoring

DISP:MON:CARD 2 Selects module #2 in a switchbox

DISPlay:MONitor:CARD?

DISPlay:MONitor:CARD? queries the setting of the :MONitor:CARD command and returns the module in a switchbox to be monitored.

DISPlay:MONitor[:STATe]

DISPlay:MONitor[:STATe] <mode> turns the monitor mode on or off. When monitor mode is on, the RS-232 terminal display presents an array of values indicating the open/close state of every switch on the module. This display is dynamically updated each time a switch is opened or closed.

Parameters

Name

< mode >

Type boolean

Range of Values

0 | 1 | ON | OFF

Default Value

OFF | 0

Comments

Monitoring Switchbox Channels: DISPlay:MONitor[:STATe] ON or

DISPlay:MONitor[:STATe] 1 turns the monitor mode on to show the channel state of the selected module. DISPlay:MONitor[:STATe] OFF or DISPlay:MONitor[:STATe] 0 turns the monitor mode off.

Typing in another command on the terminal will cause the

DISPlay:MONitor[:STATe] to be automatically set to OFF (0).

NOTE: Use of the OFF parameter is useful only if the command is issued across the GPIB interface.

Selecting the Module to be Monitored: Use the DISPlay:MONitor:CARD

< number >|AUTO command to select the module.

Monitor Mode on an E1406 Command Module Display: A typical display for the E1442A

64-Channel Form C Switch with all channels (all relays) closed follows. The "#H" indicates data is in hexadecimal format. Each channel is represented as a bit in the hex value. The channels are grouped into four blocks of 16 channels each.

15-0 #HFFFF 31-16 #HFFFF 47-32 #HFFFF 63-48 #HFFFF

Closing only channel 3 would appear as 15-0: #H0008.

*RST Condition: DISPlay:MONitor[:STATe] OFF | 0. An *RST also opens all switches on the card. A DISP:MON ON command following a *RST will display the following: 15-0 #H0000 31-16 #H0000 47-32 #H0000 63-48 #H0000


DISPlay E1442A Command Reference

Example

Enabling the Monitor Mode

DISP:MON:CARD 2

DISP:MON 1

Selects module #2 in a switchbox.

Turns the monitor mode on.

DISPlay:MONitor[:STATe]?

DISPlay:MONitor[:STATe]? queries the monitor mode. The command returns a 1 if monitor mode is on or a 0 if monitor mode is off.


E1442A Command Reference INITiate

INITiate

The INITiate subsystem selects continuous scanning cycles and starts the scanning cycle.

Subsystem Syntax

INITiate

:CONTinuous < mode >

:CONTinuous?

[:IMMediate]

INITiate

:CONTinuous

INITiate:CONTinuous <mode> enables or disables continuous scanning cycles for the switchbox. The setting of this command determines whether or not a subsequent INIT[:IMMediate] command will cause a continuous scan to occur.

Parameters

Name

< mode >

Type boolean

Range of Values

0 | 1 | ON | OFF

Default Value

OFF | 0

Comments

Continuous Scanning Operation: Continuous scanning is enabled with the

INITiate:CONTinuous ON or INITiate:CONTinuous 1 command. Sending the

INITiate[:IMMediate] command closes the first channel in the channel list. Each trigger from a trigger source selected by the TRIGger:SOURce command advances the scan through the channel list. A trigger at the end of the channel list closes the first channel in the list and the scan cycle repeats.

Non-Continuous Scanning Operation: Non-continuous scanning is enabled with the

INITiate:CONTinuous OFF or INITiate:CONTinuous 0 command. Sending the

INITiate[:IMMediate] command closes the first channel in the channel list. Each trigger from a trigger source selected by the TRIGger:SOURce command advances the scan through the channel list. A trigger at the end of the channel list opens the last channel in the list and the scanning cycle stops.

The INITiate:CONTinuous command does not start a scanning cycle

(see INIT:IMM).

Stopping Continuous Scans: See the ABORt command.

Related Commands: ABORt, ARM:COUNt, INITiate[:IMMediate], TRIGger,

TRIGger:SOURce

*RST Condition: INITiate:CONTinuous OFF


INITiate E1442A Command Reference

Example

Enabling Continuous Scans

INIT:CONT ON

SCAN (@100:163)

INIT

Enable continuous scanning

Set channel list

Start scanning cycle

INITiate:CONTinuous?

INITiate:CONTinuous? queries the scanning state. With continuous scanning enabled, the command returns 1 . With continuous scanning disabled, the command returns 0 .

Example

Query Continuous Scanning State

INIT:CONT ON

INIT:CONT?

Enable continuous scanning

Query continuous scanning state

INITiate[:IMMediate]

INITiate[:IMMediate] starts the scanning cycle and closes the first channel in the channel list. Successive triggers from the source specified by the

TRIGger:SOURce command advance the scan through the channel list.

Comments

Starting the Scanning Cycle: The INITiate[:IMMediate] command starts scanning by closing the first channel in the channel list. A trigger advances the scan through the channel list. An invalid channel list generates an error (see

[ROUTe:]SCAN command).

Stopping Scanning Cycles: See the ABORt command.

Related Commands: ABORt, ARM:COUNt, INITiate:CONTinuous, TRIGger,

TRIGger:SOURce

*RST Condition: None

Example

Starting a Single Scan

SCAN (@100:163)

INIT

Sets channel list

Starts scanning cycle by closing channel 00 and proceeding


E1442A Command Reference OUTPut

OUTPut

The OUTPut subsystem enables one trigger line of the E1406 Command Module.

It also can disable the active line.

Subsystem Syntax

OUTPut

:ECLTrg n

[:STATe] < mode >

[:STATe]?

[:EXTernal]

[:STATe] < mode >

[:STATe]?

:TTLTrg n

[:STATe] < mode >

[:STATe]?

OUTPut:ECLTrg

n

[:STATe]

OUTPut:ECLTrgn[:STATe] <mode> enables (ON or 1) or disables (OFF or 0) the

ECL trigger bus pulse on the VXI bus line specified by n . There are two ECL trigger lines on the VXI bus allowing valid values for n to be 0 and 1.

Parameters

Name n

< mode >

Type numeric boolean

Range of Values

0 or 1

0 | 1 | ON | OFF

Default Value

N/A

OFF | 0

Comments

When OUTPut:ECLTrg n [:STATe] ON is set, a trigger pulse occurs each time a channel is closed during a scan.

OUTPut:ECLTrg

n

[:STATe]?

OUTPut:ECLTrgn[:STATe]? queries the state of the ECL trigger bus line specified by n . A 1 is returned if the line is enabled. A 0 is returned if it is disabled. Valid values for n are 0 and 1 .


OUTput:[EXTernal][:STATe] E1442A Command Reference

OUTput:[EXTernal][:STATe]

OUTPut[:EXTernal][:STATe] <mode> enables or disables the Trig Out port on the

E1406A Command Module. OUTPut[:EXTernal][:STATe] ON | 1 enables the port and OUTPut[:EXTernal][:STATe] OFF | 0 disables the port.

Parameters

Name

< mode >

Type boolean

Range of Values

0 | 1 | ON | OFF

Default Value

OFF | 0

Comments

Abbreviated Syntax: OUTPut subsystem commands [:EXTernal] and [:STATe] are optional subcommands. The OUTPut command can be abbreviated by executing

OUTPut ON or OUTPut OFF.

Enabling Trig Out Port: When enabled, the Trig Out port is pulsed each time a channel is closed during scanning. When disabled, the Trig Out port is not pulsed. The output pulse is a +5 V negative-going pulse.

Trig Out Port Shared by Switchboxes: Once enabled, the Trig Out port may be pulsed by the switchbox each time a channel is closed in a switchbox during scanning.

To disable the output for a specific switchbox, send the OUTPut[:EXTernal]

[:STATe] OFF or OUTPut[:EXTernal][:STATe] 0 command for that switchbox. The

OUTP OFF command must be executed following use of this port to allow other instrument drivers to control the Trig Out port.

Related Commands: [ROUTE:]SCAN, TRIGger:SOURce

*RST Condition: OUTPut[:EXTernal][:STATe] OFF (port disabled)

Example

Enabling Trig Out Port

OUTP ON Enables Trig Out port for pulse output

OUTPut[:EXTernal][:STATe]?

OUTPut:[:EXTernal][STATe]? queries the present state of the Trig Out port on the

E1406 Command Module. The command returns 1 if the port is enabled, or 0 if disabled.

Example

Query Trig Out Port State

OUTP ON

OUTP:STAT?

Enable Trig Out port for pulse output

Query port enable state


E1442A Command Reference OUTput:[EXTernal][:STATe]

OUTPut:TTLTrg

n

[:STATe]

OUTPut:TTLTrgn[:STATe] <mode> enables (ON or 1) or disables (OFF or 0) the

TTL trigger bus pulse on the VXI bus line specified by n . There are eight TTL trigger lines on the VXI bus (n = 0 through 7).

Parameters

Name n

< mode >

Type numeric boolean

Range of Values

0 through 7

0 | 1 | ON | OFF

Default Value

N/A

OFF | 0

Comments

When OUTPut:TTLTrg n [:STATe] ON is set, a trigger pulse occurs each time a channel is closed during a scan.

OUTPut:TTLTrg

n

[:STATe]?

OUTPut:TTLTrg n [:STATe]?

queries the state of the TTL trigger bus line specified by n .

A 1 is returned if the line is enabled. A 0 is returned if the line is disabled. Valid values for n are 0 through 7.


[ROUTe:] E1442A Command Reference

[ROUTe:]

The [ROUTe:] subsystem controls switching and scanning operations for the

Form C switch modules in a switchbox.

Subsystem Syntax

[ROUTe:]

CLOSe < channel_list >

CLOSe? < channel_list >

OPEN < channel_list >

OPEN? < channel_list >

SCAN < channel_list >

:MODE < mode >

:MODE?

[ROUTe:]CLOSe

[ROUTe:]CLOSe<channel_list> activates the Form C switch relay for the channels specified in the channel_list.

The relay’s Common (C) terminal is connected to the Normally Open (NO) terminal. The channel_list is in the form ( @ccnn ),

( @ccnn , ccnn ), or ( @ccnn:ccnn ) where cc = card number (00-99) and nn = channel number (00-63).

Parameters

Name

< channel_list >

Type numeric

Range of Values cc00 - cc63

Default Value

N/A

Comments

Special Case of Using Upper Range 99 in the Channel List: Specifying the last channel as 99 (for example, (@100:199) automatically closes all channels on the card number specified by cc .

Closing Channels: To close:

ROUTe:]CLOSe ( @ccnn ) to close a single channel

[ROUTe:]CLOSe ( @ccnn , ccnn ) to close multiple channels

[ROUTe:]CLOSe ( @ccnn:ccnn ) to close sequential channels

[ROUTe:]CLOSe ( @ccnn:ccnn , ccnn:ccnn ) to close a group of sequential channels any combination of the above

Closure Order: A list of channels will not all close simultaneously. The order channels close when specified from a single command is not guaranteed. Use sequential CLOSe commands if needed.


78

E1442A Command Reference [ROUTe:]

Related Commands: [ROUTe:]OPEN, [ROUTe:]CLOSe?

*RST Condition: All Form C switch channels are open.

Example

Closing Form C Switch Channels

This example closes channel 00 of card number 1 Form C switch module and channel 15 of card number 2 Form C switch module in a single switchbox.

CLOS (@100,215) 100 closes channel 00 of Form C switch #1.

215 closes channel 15 of Form C switch #2.

[ROUTe:]CLOSe?

[ROUTe:]CLOSe? <channel_list> returns the current state of the channel(s) queried.

The channel_list is in the form (@ ccnn ). The command returns 1 if the channel is in the NO state (C connected to NO) or returns 0 if the channel is in the NC state

(C connected to NC). If a list of channels is queried, a comma-delineated list of 0 or 1 values is returned in the same order of the channel list.

Comments

Query is Software Readback: The [ROUTe:]CLOSe? command returns the current state of the hardware controlling the specified channel. It does not account for a failed switch element or a relay closed by direct register access (see Appendix B).

Example

Query Form C Switch Channel Closure

CLOS (@100,215)

CLOS? (@215)



Query channel 215

[ROUTe:]OPEN

[ROUTe:]OPEN <channel_list> de-energizes the relays for the channels specified in the channel_list connecting the Common (C) terminal to the Normally Closed

(NC) terminal. The channel_list is in the form ( @ccnn ), ( @ccnn , ccnn ), or

( @ccnn:ccnn ) where cc = card number (00-99) and nn = channel number

(00-63).



Parameters

Name

< channel_list >

Type numeric

Range of Values cc00 - cc63

Default Value

N/A

Comments

Using Upper Range 99 in the Channel List: Specifying the last channel as 99 (for example, (@100:199) automatically opens all channels on the card number specified by cc .

Opening Channels: To open:

– a single channel, use [ROUTe:]OPEN ( @ccnn)

– for multiple channels, use [ROUTe:]OPEN ( @ccnn , ccnn )

– sequential channels, use [ROUTe:]OPEN ( @ccnn:ccnn )

– a group of sequential channels, use [ROUTe:]OPEN

( @ccnn:ccnn , ccnn:ccnn )

– or any combination of the above

Opening Order: A list of channels will not all open simultaneously. The order channels open when specified from a single command is not guaranteed. Use sequential OPEN commands if needed.

Related Commands: [ROUTe:]CLOSe, [ROUTe:]OPEN?

*RST Condition: All Form C switch channels are open.

Example

Opening Form C Switch Channels

This example opens channel 00 of a card number 1 Form C switch module and channel 63 of a card number 2 Form C switch module in a single switchbox.

OPEN (@100,263) 100 opens channel 00 of Form C switch #1.

263 opens channel 63 of Form C switch #2.

[ROUTe:]OPEN?

[ROUTe:]OPEN? <channel_list> returns the current state of the channel queried.

The channel_list is in the form ( @ccnn ). The command returns 1 if the channel is in the NC state (C connected to NC) or returns 0 if the channel is in the NO state

(C connected to NO). If a list of channels is queried, a comma delineated list of 0 or 1 values is returned in the same order of the channel list.


80


Comments

Query is Software Readback: The [ROUTe:]OPEN? command returns the current state of the hardware controlling the specified channel. It does not account for a failed switch element.

Example

Query Form C Switch Channel Open State

OPEN (@100,263)

OPEN? (@263)



Query channel 263

[ROUTe:]SCAN

[ROUTe:]SCAN <channel_list> defines the channels to be scanned. The channel_list is in the form ( @ccnn ), ( @ccnn , ccnn ), or ( @ccnn:ccnn ) where cc = card number (00-99) and nn = channel number (00-63 and 99). See the comments for explanation of using the special case of 99 in the channel list.

Parameters

Name

< channel_list >

Type numeric

Range of Values cc00 - cc63, cc99

Default Value

N/A

Comments

Special Case of Using Upper Range 99 in the Channel List: Specifying the last channel as 99 (for example, @100:199) automatically scans all channels on the card number specified by cc .

Defining the Channel List: When executing [ROUTe:]SCAN, the channel list is checked for valid card and channel numbers. An error is generated for an invalid channel list.

Scanning Operation: With a valid channel list, INITiate[:IMMediate] starts the scanning cycle and closes the first channel in the channel list. Successive triggers from the source specified by TRIGger:SOURce advance the scan through the channel list.

Stopping Scan: See the ABORt command.

Related Commands: CLOSe, OPEN, SCAN:MODE, TRIGger, TRIGger:SOURce

*RST Condition: All channels open.

Example

Scanning Using External Devices



This BASIC language example shows how to scan channels via GPIB using the

E1406 Command Module and a 3457A Digital Multimeter. This example uses the command module’s Trig Out port to synchronize the switch module in a switchbox to the multimeter.

The trigger pulse from the Trig Out port triggers the multimeter for a measurement. See Chapter 2 for typical user connections to the Form C switch module. The addresses used are 70900 for the E1406 Command Module, 722 for the 3457A Multimeter, and 70915 for the switchbox.

10 OUTPUT 722;"TRIG EXT;DCV" Sets multimeter to external trigger and to measure dc volts.

20 OUTPUT 70915;"OUTP ON" Enables Trig Out port on command module.

30 OUTPUT 70915;"TRIG:SOUR BUS" Sets switchbox to receive bus triggers

40 OUTPUT 70915;"SCAN:MODE VOLT" Sets switchbox to measure voltage during scanning

50 OUTPUT 70915;"SCAN (@100:163)" Selects the channel list

60 OUTPUT 70915;"INIT" Starts scanning cycle

70 FOR I=1 TO 64

80 ENTER 722;A

Starts count loop

Enters voltmeter reading into variable A

90 PRINT A

100 TRIGGER 70915

110 NEXT I

120 END

Prints reading in variable A

Triggers the switchbox to advance the channel list

Increments count

[ROUTe:]SCAN:MODE

[ROUTe:]SCAN:MODE <mode> sets the Form C switch channels defined by the

[ROUTe:]SCAN < channel_list > command for "no measurements".

The SWITCH device driver for the E1442A also supports Form C switches which use this command to close appropriate tree relays for a specific kind of measurement (such as 2-wire and 4-wire ohms that require different tree relay closures).

For compatibility in use with the switchbox device driver, the E1442A accepts the

SCAN:MODE command but the command has no effect on Form C operation. It is important to note that the command erases the current SCAN list when executed.

This command erases the current SCAN channel list. SCAN:MODE must be followed by a [ROUTe:]SCAN command to re-establish a scan channel list.



Parameters

Name

< mode >

Type discrete

Range of Values

NONE | VOLT

Default Value

NONE

Comments

Order of Command Execution: If used, [ROUTe:]SCAN:MODE must be executed before [ROUTe:]SCAN < channel_list > because SCAN:MODE erases the current

SCAN list. The SCAN:MODE command is not needed for Form C Switch operation.

Related Commands: SCAN

*RST Condition: [ROUTe:]SCAN:MODE NONE

[ROUTe:]SCAN:MODE?

[ROUTe:]SCAN:MODE? returns the current state of the scan mode. The command returns NONE or VOLT to indicate which mode the scan is set.


STATus

STATus


The STATus subsystem reports the bit values of the Operation Status Register (in the command module). It also allows you to unmask the bits you want reported from the Standard Event Register and to read the summary bits from the Status

Byte Register.

Subsystem Syntax

STATus

:OPERation

:CONDition?

:ENABle < number >

:ENABle?

:PRESet

:EVENt]?

Comments

The STATus system contains four software registers that reside in a SCPI driver, not in the hardware (see Figure 3-1) Two registers are under IEEE 488.2 control: the Standard Event Status Register (*ESE?) and the Status Byte Register (*STB).

The Operational Status bit (OPR), Service Request bit (RSQ), Standard Event summary bit (ESB), Message Available bit (MAV) and Questionable Data bit

(QUE) in the StatusByte Register (bits 7, 6, 5, 4 and 3 respectively) can be queried with the *STB? command.

Use the *ESE? command to query the unmask value for the Standard Event

Status Register (the bits you want logically OR’d into the summary bit). The registers are queried using decimal weighted bit values. The decimal equivalents for bits 0 through 15 are included in Figure 3-1.

A numeric value of 256 executed in a STATus:OPERation:ENABle <unmask> command allows only bit 8 to generate a summary bit. The decimal value for bit

8 is 256.

The decimal values are also used in the inverse manner to determine which bits are set from the total value returned by an EVENt or CONDition query. The

SWITCH driver exploits only bit 8 of Operation Status Register. This bit is called the Scan Complete bit which is set whenever a scan operation completes. Since completion of a scan operation is an event in time, bit 8 will never appear set when STAT:OPER:COND? is queried. However, bit 8 is set with the

STAT:OPER:EVENt? query command.


84


Scan

Complete

9

10

11

12

13

14

15

6

7

8

3

4

5

0

1

2

C

Automatically Set at

Power On Conditions

Automatically

Set by

Parser

Set by *OPC

Related Commands are *OPC? and *WAI

Power On

User Request

Command Error

Execution Error

Device Dependent Error

Query Error

Request Control

Operation Complete

Standard Event Register

*ESR?

*ESE <unmask>

*ESE?

0

1

2

5

6

3

4

7

EV

<1>

<2>

<4>

<8>

<16>

<32>

<64>

<128>

EN

+

"OR"

Output Buffer

Operation Status Register

STATus:OPERation:CONDition?

STATus:OPERation:EVENt?

STATus:OPERation:ENABle

Summary

Bit

QUE

MAV

ESB

RQS

OPR

2

3

4

0

1

5

6

7

Status

Byte

Status Byte Register

*STB?

SPOLL

*SRE <unmask>

*SRE?

<1>

<2>

<4>

<8>

<16>

<32>

+

<128>

EN

SRQ

Request Service

"OR"

NOTE:

QUE = Questionable Data

MAV = Message Available

ESB = Standard Event

RQS = Request Service

OPR = Operation Status

C = Condition Register

EV = Event Register

EN = Enable Register

SRQ = Sevice Request

SRQ ROUTING handled by your application program or passed to the controller via

GPIB

EV

<1>

<2>

<4>

<8>

<16>

<32>

<64>

<128>

<256>

<512>

<1024>

<2048>

<4096>

<8192>

<16384>

<32768>

EN

+

"OR"

Summary

Bit unmask examples:

Register bit unmask decimal weight

Operation Complete 8 <256>

*ESE 61 unmasks standard event register bits 0,

2, 3, 4 and 5 (*ESE 1 only unmasks bit 0).

*SRE 128 unmasks the OPR bit in the status

byte register. This is effective only if the

STAT:ENAB <unmask> command is executed.

(See below)

STAT:OPER:ENAB 256 unmasks bit 8 (Scan Complete)

which can set the OPR bit in the Status Byte.

"OR"

+

OPR

Figure 0-1. E1442A Form C Switch Module Status System

STATus


STATus E1442A Command Reference

STATus:OPER:CONDition?

STATus:OPERation:CONDition? returns the state of the Condition Register in the

Operation Status Group. The state represents conditions which are part of the instrument’s operation. The SWITCH driver does not set bit 8 in this register (see

STAT:OPER:EVENt?).

STATus:OPERation:ENABle

STATus:OPERation:ENABle <number> sets an enable mask to allow events recorded in the Event Register to send a summary bit to the Status Byte Register

(bit 7). For Form C switch modules, when bit 8 in the Operation Status Register is set to 1 and that bit is enabled by the OPER:ENABle command, bit 7 in the

Status Register is set to 1.

Parameters

Name

< number >

Type numeric

Range of Values

0 through 65535

Default Value

N/A

Comments

Setting Bit 7 of the Status Register: STATus:OPERation:ENABle 256 sets bit 7 of the

Status Register to 1 after bit 8 of the Operation Status Register is set to 1.

Related Commands: [ROUTe:]SCAN

Example

Enable the Status Register

STAT:OPER:ENAB 256 Enables bit 8 of the Operation Status Register to be reported to bit OPR in the Status Register

STATus:OPERation:ENABle?

STATus:OPERation:ENABle? returns which bits in the Event Register (Operation

Status Group) are unmasked.

Comments

Output Format: Returns a decimal weighted value from 0 to 65,535 indicating which bits are set to true. The value returned is the value set by STAT:OPER:ENAB

< number > command. However, the maximum decimal weighted value used in this module is 256 (bit 8 set to true).


86

E1442A Command Reference STATus

Example

Query the Operation Status Enable Register

STAT:OPER:ENAB? Query the Operation Status Enable Register

STATus:OPERation[:EVENt]?

STATus:OPERation[:EVENt]? returns which bits in the Event Register (Operation

Status Group) are set. The Event Register indicates when there has been a time-related instrument event.

Comments

Setting Bit 8 of the Operation Status Register: Bit 8 (Scan Complete) is set to 1 after a scanning cycle completes. Bit 8 returns to 0 after sending the

STATus:OPERation[:EVENt]? command.

Returned Data after Sending the STATus:OPERation[:EVENt]? Command: The command returns +256 if bit 8 of the Operation Status Register is set to 1. The command returns +0 if bit 8 of the Operation Status Register is set to 0.

Event Register Cleared: Reading the STATus:OPERation:EVENt register with the

STATus:OPERation:EVENt? command clears it.

ABORting a Scan: ABORting a scan will leave bit 8 set to 0.

Related Commands: [ROUTe:]SCAN

Example

Reading the Operation Status Register After a Scanning Cycle

STAT:OPER?

Returns the bit values of the Standard Operation Status

Register.

read the register value +256 shows bit 8 is set to 1.

+0 shows bit 8 is set to 0.

STATus:PRESet

STATus:PRESet affects only the enable register by setting all enable register bits to 0. It does not affect either the "status byte" or the "standard event status".

PRESet does not clear any of the event registers.



SYSTem

The SYSTem subsystem returns the error numbers and error messages in the error queue of a switchbox, and returns the types and descriptions of modules

(cards) in a switchbox.

Subsystem Syntax

SYSTem

:CDEScription? < number >

:CTYPe? < number >

:CPON < number > ALL

:ERRor?

SYSTem:CDEScription?

SYSTem:CDEScription? <number> returns the description of a selected module

(card) in a switchbox.

Parameters

Name

< number >

Type numeric

Range of Values

1 through 99

Default Value

N/A

Comments

Form C Switch Module Description:

For the E1442A, SYSTem:CDEScription?< number > returns:

64 Channel General Purpose Switch

Example

Reading the Description of a Card #1 Module

SYST:CDES? 1 Determine the description


88


SYSTem:CPON

SYSTem:CPON <number> | ALL opens all channels of a selected or all modules

(cards) in a switchbox to their power-on state.

Parameters

Name

< number >

Type numeric

Range of Values

1 through 99

Default Value

N/A

Comments

Differences Between *RST and CPON: SYSTem:CPON only opens all channels of a selected module or all modules in a switchbox. *RST opens all channels of all modules in a switchbox and also sets all other settings to their power-on states.

Example

Set All Channels on Module #1 to Power-on State

SYST:CPON 1 Sets module #1 channels to power-on state (open)

SYSTem:CTYPe?

SYSTem:CTYPe?<number> returns the module (card) type of a selected module in a switchbox.

Parameters

Name

< number >

Type numeric

Range of Values

1 through 99

Default Value

N/A

Comments

Form C Switch Module Model Number: For the E1442A, SYSTem:CTYPe?

<number> returns:

HEWLETT-PACKARD,E1442A,0,A.08.00

where the four fields of the response are, 1) manufacturer , 2) model number , 3) serial number (always 0), and 4) SWITCH firmware revision.

Example

Reading the Model Number of a Card #1 Module

SYST:CTYP? 1 Determine the model number



SYSTem:ERRor?

SYSTem:ERRor? returns t

he error numbers and corresponding error messages in the error queue of a switchbox. See Appendix C for a listing of the switchbox error numbers and messages.

Comments

– Error Numbers/Messages in the Error Queue: Each error generated by a switchbox stores an error number and corresponding error message in the error queue. Each error message can be up to 255 characters long but typically is much shorter.

– Clearing the Error Queue: An error number/message is removed from the queue each time the SYSTem:ERRor? query command is sent.

The errors are cleared first-in, first-out.

– When the queue is empty, each following SYSTem:ERRor? query command returns 0, "No error" . To clear all error numbers/messages in the queue, execute the *CLS command.

– Maximum Error Numbers/Messages in the Error Queue: The queue holds a maximum of 30 error numbers/messages for each switchbox.

If the queue overflows, the last error number/message in the queue is replaced by -350, "Too many errors" . The least recent error numbers/messages remain in the queue and the most recent are discarded.

Example

Reading the Error Queue

SYST:ERR? Query the error queue



TRIGger

The TRIGger subsystem commands controls the triggering operation of the Form

C switch modules in a switchbox.

Subsystem Syntax

TRIGger

[:IMMediate]

:SOURce <source>

:SOURce?

TRIGger[:IMMediate]

TRIGger[:IMMediate] causes a trigger to occur when the defined trigger source is

TRIGger:SOURce HOLD or TRIGger:SOURce BUS. This can be used to trigger a suspended scan operation.

Comments

Executing the TRIGger[:IMMediate] Command: A channel list must be defined in the

[ROUTe:]SCAN <channel_list> command and an INITiate:IMMediate command must be executed before TRIGger:IMMediate can trigger the switchbox.

HOLD or BUS Source Remains: If selected, theTRIGger:SOURce HOLD or

TRIGger:SOURce BUS commands remain in effect, after triggering the switchbox with the TRIGger[:IMMediate] command.

Related Commands: INITiate, [ROUTe:]SCAN, TRIGger:SOURce

Example

Advancing Scan Using the TRIGger Command

TRIG:SOUR HOLD

SCAN (@100:163)

INIT loop statement

TRIG increment loop

Sets trigger source to hold

Sets channel list


Starts count loop

Advances channel list to next channel

Increments count loop



TRIGger:SOURce

TRIGger:SOURce <source> specifies the trigger source to advance the scanning channel list.

Parameters

Name

BUS

EXTernal

HOLD

ECLTrg n

TTLTrg n

IMMediate

Type discrete discrete discrete numeric numeric discrete

Range of Values

*TRG command

Trig in port

Hold triggering n = 0 or 1 n = 0 thru 7

Immediate triggering

Comments

Enabling the Trigger Source: The TRIGger:SOURce command only selects the trigger source. The INIT[:IMMediate] command enables the trigger source. The trigger source must be selected using the TRIGger:SOURce command before executing the INIT command.

One Trigger Input Selected at a Time: Only one input (ECLTrg 0 or 1; TTLTrg 0, 1, 2, 3,

4, 5, 6 or 7; or EXTernal) can be selected at one time. Enabling a different trigger source will automatically disable the active input. For example, if TTLTrg1 is the active input, and TTLTrg4 is enabled, TTLTrg1 will become disabled and TTLTrg4 will become the active input.

Using the TRIG command: You can use the TRIGger[:IMMediate] command to advance the scan when TRIGger:SOURce BUS or TRIGger:SOURce HOLD is selected.

Using External Trigger Inputs: With TRIGger:SOURce EXTernal selected, only one switchbox at a time can use the external trigger input at the E1406 Command

Module Trig In port.

Using TTL or ECL Trigger Bus Inputs: These triggers are from the VXI backplane trigger lines ECL[0,1] and TTL[0-7]. These may be used to trigger the SWITCH driver from other VXI instruments.

Using EXTernal | TTLTrg n | ECLTrg n Trigger Inputs: After using TRIGger:SOURce EXT |

TTLT n | ECLT n , the selected trigger source remains assigned to the SWITCH driver until it is relinquished through use of the TRIG:SOUR BUS|HOLD command.

While the trigger is in use by the SWITCH driver, no other drivers operating on the E1406 Command Module will have access to that particular trigger source.

Likewise, other drivers may consume trigger resources which may deny access to


E1442A Command Reference STATus a particular trigger by the SWITCH driver. You should always release custody of trigger sources after completion of an activity by setting the trigger source to

BUS or HOLD (TRIG:SOUR BUS | HOLD).

Using Bus Triggers: To trigger the switchbox with TRIGger:SOURce BUS selected, use the IEEE 488.2 Common command *TRG or the GPIB Group Execute Trigger

(GET) command.

Trig Out Port Shared by Switchboxes: See the OUTPut command.

Related Commands: [ROUTe:]SCAN, TRIGger, ABORt

*RST Condition: TRIGger:SOURce IMMediate

Example

Scanning Using External Triggers

In the following example, the trigger input is applied to the E1406 Command

Module Trig In port.

TRIG:SOUR EXT

SCAN (@100:163)

INIT

(trigger externally)

Sets trigger source to external

Sets channel list



Example

Scanning Using Bus Triggers

TRIG:SOUR BUS

SCAN (@100:163)

INIT

*TRG

Sets trigger source to bus

Sets channel list





TRIGger:SOURce?

TRIGger:SOURce? returns the current trigger source for the switchbox.

Command returns either BUS, EXT, HOLD, TTLT0-7, ECLT0-1 or IMM for trigger sources BUS, EXTernal, HOLD, TTL Trigger, ECL Trigger, ECL Trigger or

IMMediate, respectively.

Example

Query Trigger Source

TRIG:SOUR EXT

TRIG:SOUR?

Sets trigger source to external

Queries trigger source; returns EXT.


E1442A Command Reference SCPI Commands Quick Reference

SCPI Commands Quick Reference

Command

ABORt

ARM

DISPlay

INITiate

OUTPut

[ROUTe:]

STATus

SYSTem

TRIGger

:COUNt <number> MIN |MAX

:COUNt? [MIN|MAX]

:MONitor:CARD <number> |AUTO

:MONitor:CARD?

:MONitor[:State] ON|OFF|1|0

:MONitor[:State]?

:CONTinuous ON | OFF

:CONTinuous?

[:IMMediate]

:ECLTrg n [:STATe] ON|OFF|1|0

:ECLTrg n [:STATe]?

[:EXTernal][:STATe] ON|OFF|1|0

[:EXTernal][:STATe]?

:TTLTrg n [:STATe] ON|OFF|1|0

:TTLTrg n [:STATe]?

CLOSe <channel _list>

CLOSe?

<channel _list>

OPEN <channel_list>

OPEN?

<channel _list>

SCAN <channel_list>

SCAN:MODE NONE|VOLT

SCAN:MODE?

:OPERation:CONDition?

:OPERation:ENABle

:OPERation:ENABle?

:OPERation[:EVENt]?

:PRESet

:CDEScription?

<number>

:CTYPe?

<number>

:CPON <number> |ALL

:ERRor?

[:IMMediate]

:SOURce BUS

:SOURce EXTernal

:SOURce HOLD

:SOURce IMMediate

:SOURce ECLTrg n

:SOURce TTLTrg n

:SOURce?

The following table summarizes the SCPI Commands for the E1442A 64-Channel Form

C Switch Module used in a switchbox.

Description

Aborts a scan in progress

Multiple scans per INIT command

Queries number of scans

Selects module to be monitored

Queries the card number

Selects monitor mode

Queries the monitor mode

Enables/disables continuous scanning

Queries continuous scan state

Starts a scanning cycle

Enables/disables the specified ECL trigger line

Queries the specified ECL trigger line

Enables/disables the Trig Out port on the E1406

Queries the external state

Enables/disables the specified TTL trigger line

Queries the specified TTL trigger line

Closes channel(s)

Queries channel(s) closed

Opens channel(s)

Queries channel(s) opened

Defines channels for scanning

Sets scan mode (has no effect on Form C operation)

Queries the scan mode

Returns contents of the Operation Condition Register

Enables events in the Operation Event Register to be reported

Returns the mask value set by the :ENABle command

Returns the contents of the Operation Event Register

Enables Register bits to 0

Returns description of module in a switchbox

Returns the module type

Opens all channels on specified module(s)

Returns error number/message in a switchbox Error Queue

Causes a trigger to occur

Trigger source is *TRG

Trigger source is Trig In (on the E1406)

Holds off triggering

Trigger source is the internal triggers

Trigger is the VXIbus ECL trigger bus line n

Trigger is the VXIbus TTL trigger bus line n

Queries scan trigger source


IEEE 488.2 Common Commands Reference E1442A Command Reference

IEEE 488.2 Common Commands Reference

Command

*CLS

*ESE <unmask>

*ESE?

*ESR?

*IDN?

*OPC

*OPC?

*RCL <n>

*RST

*SAV <n>

*SRE <unmask>

*SRE?

*STB?

*TRG

*TST?

*WAI

The following table lists the IEEE 488.2 Common (*) commands accepted by the

E1442A 64-channel Form C Switch Module. The operation of some of these commands is described in Chapter 2 of this manual. For more information on Common commands, refer to the user’s manual for your mainframe or to the ANSI/IEEE Standard

488.2-1987. The common commands *RCL, *SAV and *TST? do specific actions with the E1442A, as listed in the following table.

Command Description

Clears all status registers (see STATus:OPERation[:EVENt]?) and clears the error queue.

Enables Standard Event.

Enables Standard Event Query.

Standard Event Register Query.

Instrument ID Query; returns identification string of the module.

Operation Complete.

Operation Complete Query.

Recalls the instrument state saved by *SAV. You must reconfigure the scan list.

Resets the module. Opens all channels and invalidates current channel list for scanning.

Sets ARM:COUN 1, TRIG:SOUR IMM, and INIT:CONT OFF.

Stores the instrument state but does not save the scan list.

Service request enable, enables status register bits.

Service request enable query.

Read status byte query.

Triggers the module to advance the scan when scan is enabled and trigger source is

TRIGger:SOURce BUS.

Self-test. Executes an internal self-test and returns only the first error encountered. Does not return multiple errors. The following is a list of responses you can obtain where “ cc ” is the card number with the leading zero deleted.

+0 if self test passes.

+cc01 for firmware error.

+cc02 for bus error (problem communicating with the module).

+cc03 for incorrect ID information read back from the module's ID register.

+cc10 if an interrupt was expected but not received.

+cc11 if the busy bit was not held for a sufficient amount of time.

Wait to Complete.


E1442A Command Reference IEEE 488.2 Common Commands Reference



User Guide

A

Specifications

Maximum Input Voltage:

High to Low Any Terminal to Chassis

150VDC 150VDC

150VAC RMS

210VAC Peak

150VAC RMS

210VAC Peak

(Maximum with internal jumpers installed or use of Option

010 terminal module):

High to Low Any Terminal to Chassis

60VDC 60VDC

30VAC RMS

42VAC Peak

30VAC RMS

42VAC RMS

Maximum Current (per switch):

1A DC or 1A AC RMS

Maximum Power:

Per Switch: 40W DC, 40VA AC

Per Module: 320W DC, 320VA AC

Thermal Offset: <70  V per channel

Closed Channel Resistance:

>1.5

 typical

>13.5

 at end of relay life

Insulation Resistance:

(between any two points):

>10

7

>10 8

 at 40  C, 65% RH

 at 25  C, 40% RH

Bandwidth: -3dB at 10 MHz

Crosstalk, Channel to Channel:

>100 kHz:  >-70dB

>10 MHz:  >-30dB

Capacitance:

Common to NO or NC: >40pF

Channel to Channel:  >30pF

Power Up/Down States: All Open

Typical Time to Open/Close a Channel: 13 msec

Module Size/Device Type: C, register-based

Installation Category: IC 1

Connectors Used: P1 and P2

Number of Slots: 1

VXIbus Interface Capability: Interrupter, D16

Interrupt Level: 1-7, selectable

Power Requirements:

Peak Module Current Dynamic Module Current

Voltage: +5V +12V Voltage: +5V +12V

IPM: 0.10 A 0.24A IDM: 0.11A 0.01A

Watts/Slot: 1.0

Maximum Transient Voltage: 1300V

Operating Temperature: 0  to 55  C

Storage Temperature: -40  to 75  C

Operating Humidity: 40  C and 95% RH

Operating Location: Intended for indoor use only.

IEC Pollution Degree 2 1 Normally, only non-conductive pollution occurs. Occasionally, however, a temporary conductivity caused by condensation must be expected.

97

Specifications

Relay Life (typical):

No load: >10

Max. load:  >10

6

5

operations

operations

1 Pollution : Any addition of foreign matter, solid, liquid or gaseous (ionized gases), that may produce a reduction of dielectric strength or surface resistivity. Pollution Degree : For the purpose of evaluating clearances (the shortest distance in air between two conductive parts), Pollution Degree 1 and Pollution Degree 2 are recognized for use in the micro-environment.

Pollution Degree 1 : No pollution or only dry, non-conductive pollution occurs. The pollution has no influence.

Pollution Degree 2 : Normally only non-conductive pollution occurs. Occasionally, however, a temporary conductivity caused by condensation must be expected.

Clearance : The shortest distance in air between two conductive parts.



User Guide

B

Register-Based Programming

About This Appendix

This appendix contains the information you can use for register-based programming of the E1442A. The contents include:

Register Programming vs. SCPI Programming page 99

Addressing the Registers page 99

Register-Based Programming the E1442A page 102

Register Definitions page 106

Programming Example page 108

Register Programming vs. SCPI Programming

The E1442A 64-Channel Form C Switch Module is a register-based module that does not support the VXIbus word serial protocol. When a SCPI command is sent to the Form C switch, the E1406 Command Module parses the command and programs the switch at the register level.

If SCPI is used to control this module, register programming is not recommended. The SCPI driver maintains an image of the card state. The driver will be unaware of changes to the card state if you alter the card state by using register writes.

Register-based programming is a series of reads and writes directly to the Form

C switch registers. This increases throughput speed since it eliminates command parsing and allows the use of an embedded controller. Also, if slot 0, the resource manager, and the computer GPIB interface are provided by other devices, a C-size system can be downsized by removing the command module.

Addressing the Registers

Register addresses for register-based devices are located in the upper 25% of

VXI A16 address space. Every VXI device (up to 256 devices) is allocated a

32-word (64-byte) block of addresses. With seven registers, the E1442A Form C

Switch Module uses seven of the 64 addresses allocated.

99

100

Register-Based Programming Addressing the Registers

The Base Address

When reading or writing to a switch register, a hexadecimal or decimal register address is specified. This address consists of a base address plus a register offset. The base address used in register-based programming depends on whether the A16 address space is outside or inside the E1406 Command Module.

A16 Address Space Outside the Command Module

When the E1406 Command Module is not part of your VXIbus system (Figure

B-1), the switch’s base address is computed as:

C000

16

+ (LADDR * 64)

16 or 49,152 + (LADDR * 64) where C000

16

(49,152) is the starting location of the register addresses, LADDR is the switch’s logical address, and 64 is the number of address bytes per VXI device. For example, the switch’s factory-set logical address is 120 (78 address is not changed, the switch will have a base address of:

16

). If this

C000

16

+ (120 * 64)

16

= C000

16

+ 1E00

16

= DE00

16 or (decimal)

49,152 + (120 * 64) = 49,152 + 7680 = 56,832

A16 Address Space Inside the Command Module or Mainframe

When the A16 address space is inside the E1406 Command Module

(Figure B-2), the switch’s base address is computed as:

1FC000

16

+ (LADDR * 64)

16

or 2,080,768 + (LADDR * 64) where 1FC000

16

(2,080,768) is the starting location of the VXI A16 addresses,

LADDR is the switch’s logical address, and 64 is the number of address bytes per register-based device. Again, the switch’s factory-set logical address is 120. If this address is not changed, the switch module will have a base address of:

1FC000

16

+ (120 * 64)

16

= 1FC000

16

+ 1E00

16

= 1FDE00

16 or

2,080,768 + (120 * 64) = 2,080,768 + 7680 = 2,088,448

Figure B-1 shows the register address location within A16 as it might be mapped by an embedded controller. Figure B-2 shows the location of A16 address space in the E1406 Command Modules.

Register Offset

The register offset is the register’s location in the block of 64 address bytes. For example, the switch’s Status/Control Register has an offset of 04

16

. When you write a command to this register, the offset is added to the base address to form the register address:


Addressing the Registers Register-Based Programming

DE00

16

+ 04

16

= DE04

16

1FDE00

16

+ 04

16

= 1FDE04

16 or

56,832 + 4 = 56,836

2,088,448 + 4 = 2,088,452

FFFF

16

COOO

16

OOOO

16

A16

ADDRESS

SPACE

FFFF

16

REGISTER

ADDRESS

SPACE

*

REGISTER

OFFSET

3E

16

3C

16

16-BIT WORDS

16

16

14

16

12

16

10

16

CH 48-63 Control Register




*

C000

16

(49,152)

O4

O2

16

16

OO

16 or

Status/Control Register

Device Type Register

ID Register

E1442A

A16 REGISTER MAP

*

*

Register Address = Base address + Register Offset

Figure B-1 Registers within A16 Address Space

FFFFFF

16

E1406

ADDRESS MAP

EOOOOO

16

A24

ADDRESS

SPACE

200000

16

IF0000

16

000000

16

200000

16

IFCOOO

16

200000

16

A16

ADDRESS

SPACE

IFOOOO

16

REGISTER

ADDRESS

SPACE

*

IFCOOO

16

(2,080,768)

* or

*

*

Register Address = Base address + Register Offset

REGISTER

OFFSET

3E

3C

16

16

16-BIT WORDS

16

16

14

16

12

16

10

16





O4

O2

16

16

OO

16



ID Register

E1442A

A16 REGISTER MAP

Figure B--2 Registers within the E1406 A16 Address Space


Register-Based Programming Register-Based Programming the E1442A

Register-Based Programming the E1442A

The E1442A Form C Switch Module is a register-based slave device. There are 64 independent switches on the card which are controlled using the Switch Control

Registers. There are four register types on this module:

– Identifies Hewlett-Packard as the manufacturer and the card is an A16 register-based device.

– Device Type Register - Identifies card as an E1442A.

– Status/Control Register - When read from, it is used to return device-specific status information. When written to, it is used to set control bits.

– Switch Enable Registers - These four registers control the state of the

Form C switches on the module (e.g., close or open the switch).

Reading or Writing to E1442A Registers

To read or write to specific registers you must address a particular register within a module. The registers within a module are located using a fixed offset. The module address is based on the module’s logical address. There are two basic ways of accessing registers.

One method uses the logical address directly to access a particular card using

VXI:READ and VXI:WRITE commands through a command module. The other method can be used with an embedded controller that locates A16 data space within its memory map. The memory mapping allows registers to be directly read or written with moves to/from memory. The factory setting of the logical address switch is 120 (78

16

). This value is used in the following examples.

Register Access with Logical Address (Command Module)

When using the E1406 Command Module to access registers via VXI:READ and

VXI:WRITE commands, the logical address is used to determine which VXI module is being accessed. See the E1406 Command Module documentation for use of the VXI:READ and VXI:WRITE commands and other related commands.

The following commands are sent to the E1406 Command Module via the GPIB.

The example below shows a portion of a BASIC program. The controller could either be external or embedded in the VXI mainframe. This example shows the

Status/Control Register being accessed.

OUTPUT 70900; "VXI:WRITE 120, 4, #HFFFF" Writes FFFF hex to Control Register

OUTPUT 70900;"VXI:READ 120,4"

ENTER 70900; Status

Reads from Status Register


Register-Based Programming the E1442A Register-Based Programming

Register Access with Memory Mapping (Embedded Controller)

When using an embedded controller, VXI A16 address space is usually mapped to some block of memory within the controller’s addressable memory space. See the manual for the specific embedded controller you are using to determine where VXI Al6 is mapped. There may be other methods of accessing the VXI backplane. The following method shows which Al6 addresses are calculated for a module.

For example, for a C-size mainframe with an E1406 Command Module,

VXI A16 address space starts at lF0000

16

. In the E1406 Command Module, the

A16 space is divided so modules are addressed only at locations beginning with

C000

16

within A16. Each module is allocated 64 register addresses (40

16

). The module base address is related to the logical address set by the logical address switch on the module:

(base address)

16

= (logical address)

16

* 40

16

+ C000

16

For the Form C switch, the factory-set logical address is 120 (78

16

), so to address the Status/Control Register of a Form C switch using the E1406 Command

Module: base address = (78

16

)*(40

16

) + C000

16

= DE00

16 register address = [A16 location]

16 register address = 1F0000

16

+ [base address]

+ DE00

16

+ 04

16

16

+ [register offset]

16

= 1FDE04

16

Reading the E1442A Registers

You can read the following Form C switch registers:

– ID Register (base + 00

16

)

– Device Type Register (base + 02

16

)

– Status/Control Register (base + 04

16

)

– Switch Enable Register for channels 0 - 15 (base + 10

16

)


16

)


16

)


16

)

ID Register

For the Form C switch, a read of the ID Register (base address + 00

16

) returns

FFFF

16

since the switches are manufactured by Hewlett-Packard and are A16 only, register-based devices. The Device Type Register

(base + 02

16

) returns 0228

16

.


104

Register-Based Programming Register-Based Programming the E1442A


For the Form C switch, a read of the Device Type Register (base address + 02

16 returns 0228

16

. This indicates it is a model E1442A.

)


Each relay requires about 13 msec execution time (close to open or open to close) during which time the switch is "busy". A read of the Status/Control

Register (base + 04

16

) returns a 1 in bit 7 when the module is not busy or returns a 0 in bit 7 when the module is busy.

An interrupt is generated after any of the Switch Enable Registers are written.

Bit 6 of the Status Register is used to enable/disable interrupts from the card.

If bit 6 is returned as a 0 , interrupts are enabled. If bit 6 is returned as a 1 , interrupts are disabled.

Bit 14 is the MODID bit. When a 0 is returned in bit 14, the module has been selected with a high state on the P2 MODID line (this occurs during turn-on). If a

1 is returned, the module has not been selected.

Switch Enable Register

A read of any of the Switch Enable Registers always returns FFFF

16 of the channel states.

, regardless

Writing to E1442A Registers

You can write to the following Form C switch registers:

– Status/Control Register (base + 04

16

)


16

)


16

)


16

)


16

)


Writing a 1 to bit 0 of the Status/Control Register (base + 04

16

) to reset the switch module (all channels open). Resetting the module enables interrupts.

It is necessary to write a 0 to bit 0 after the reset has been performed before any other commands can be programmed and executed.


Register-Based Programming the E1442A Register-Based Programming

To disable the interrupt generated when channels are opened/closed, write a 1 to bit 6 of the Status/Control Register.

Typically, interrupts are disabled when doing register-level access to a module. Refer to the operating manual of the command module or the embedded controller being used to handle interrupts. Interrupts are re-enabled after a reset.

Bit 12 provides status on fuse F4. This is a user-installed component required to provide the +5V pullup voltage to the module’s internal bus for the NC and NO contacts. A 0 indicates the fuse is not installed (or the fuse is blown if installed).

A 1 indicates you previously installed the fuse and it is good.

Switch Enable Registers

Writes to the Switch Enable Registers (base + 10

16

through base + 16

16

) enable you to open or close the desired channel. For example, write a 1 to bit 2 of the

Switch Enable Register (base + 10

16 of the register at base + 16

16

) to close channel 02. Or, write a 0 to bit 15

to open channel 63.

All relays are non-latching and will open during a power-down.

A switch is open when contact is made between the normally closed (NC) contact and common (C). A switch is closed when contact is made between the normally open (NO) contact and common (C). Any combination of open or closed states is allowed at one time for all channels on the module..

COM

NO

NC Relay position after "CLOSE" command

Write a "1" to the register bit to close the relay

COM

NO

NC Relay position after "OPEN" command

Write a "0" to the register bit to open the relay


Register-Based Programming Register Definitions

Register Definitions

Address b+00

16

Read

15 14 13 12 11 10 9 8 7 6 5 4

Manufacturer ID; Returns FFFFh = Hewlett-Packard A16 only register-based device.

3 2 1 0

Address b+02

16

Read

15 14 13 12 11 10 9

Returns 022816 for the E1442A module.

8 7 6 5 4 3 2 1 0

Address b+04

16

Write*

Read**

15 14 13 12 11 10 9

Undefined

Undef

M Undef

S1 Undefined

8 7

B

6

D

D

5 4

Undefined

Undefined

3 2 1 0

R

R

*Write Bits (Status/Control Register) bit 0 bit 6

R

D

Writing a 1 to this bit resets the switch to the power-on state (all channels open). To reset, keep this bit set to 1 for a minimum of 100 ms and then set bit 0 back to a logical 0 to allow switches to be closed.

Disable interrupt by writing a 1 to this bit (set back to 0 with a reset).

**READ BITS (Status/Control Register) bit 0 bit 6 bit 7

R

D

B

A 1 at this bit resets the switch to the power-on state (all channels open). To reset, set bit 0 back to a logical 0 to allow switches to be closed.

Interrupt Status: 1 = disabled, 0 = enabled.

Busy Status: 1 = not busy, 0 = busy.

bit 12 S1 Fuse F4 provides +5V pull-up voltage for the NC and NO switch contacts by use of the module’s internal bus (see Figures 1-8 and 1-9.)

Fuse F4 status;

0 = fuse F4 not installed (factory shipped without the fuse).

(A 0 also can indicate a blown fuse after installing fuse F4.)

1 = fuse F4 is installed (user must install fuse). bit 14 M MODID bit; if the bit is 0 , the module has been selected during turn-on. Normally this bit is 1 when not in the turn-on cycle.


Register Definitions Register-Based Programming

Address b+10

16

Write

Read

Switch Enable Registers

You write to the switch enable registers to close (or open) a channel. Write a "1" to the register to close a relay (channel). Write a "0" to the register to open a relay (channel). Reading any Switch Enable Register will always return FFFF regardless of the channel states.

16

15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0

Ch

15

Ch

14

Ch

13

Ch

12

Always returns FFFF

16

Ch

11

Ch

10

Ch

09

Ch

08

Ch

07

Ch

06

Ch

05

Ch

04

Ch

03

Ch

02

Ch

01

Ch

00

Address b+12

16

Write

Read

Address b+14

16

Write

Read

Address b+16

16

Write

Read

15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0

Ch

31

Ch

30

Ch

29

Ch

28

Always returns FFFF

16

Ch

27

Ch

26

Ch

25

Ch

24

Ch

23

Ch

22

Ch

21

Ch

20

Ch

19

Ch

18

Ch

17

Ch

16

15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0

Ch

47

Ch

46

Ch

45

Ch

44

Always returns FFFF

16

Ch

43

Ch

42

Ch

41

Ch

40

Ch

39

Ch

38

Ch

37

Ch

36

Ch

35

Ch

34

Ch

33

Ch

32

15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0

Ch

63

Ch

62

Ch

61

Ch

60

Always returns FFFF

16

Ch

59

Ch

58

Ch

57

Ch

56

Ch

55

Ch

54

Ch

53

Ch

52

Ch

51

Ch

50

Ch

49

Ch

48


Register-Based Programming Programming Example

Programming Example

Beginning of Program

/* This program resets the E1442A, closes channels and reads the*/

/* switch’s relay control registers, opens channels and scans all 64*/

/* channels on the module. *

#include <sicl.h>

#include <stdio.h>

#include <stdlib.h>

#include <math.h>

#include <dos.h>

/* function prototypes */ void reset_sw(char *base_addr); void delay (unsigned milliseconds);

Program Main void main(void)

{ double ldexp(double i, int exp); char *base_addr; int j, k; unsigned short chan_0_15_reg, chan_16_31_reg; /* First 32 chan */ unsigned short chan_32_47_reg, chan_48_63_reg; /* Sec 32 chan */ unsigned short id_reg, dt_reg; /* ID and device type */ unsigned short stat_reg; /* Status Register */

/* create and open a device session */

INST e1442a; e1442a = iopen("vxi,120");

/* map the E1442A registers into user memory space */ base_addr = imap(e1442a, I_MAP_VXIDEV, 0, 1, NULL);

/* clear the user screen */ clrscr();

/* reset the E1442A */ reset_sw(base_addr);


Programming Example Register-Based Programming

Read ID and Device

Type Registers

/********** read the switch’s ID and Device Type registers **********/ id_reg = iwpeek((unsigned short *)(base_addr + 0x00)); dt_reg = iwpeek((unsigned short *)(base_addr + 0x02)); printf("ID register = 0x%4X\nDevice Type register = 0x%4X\n", id_reg, dt_reg);

Read Status Register

/********** read the switch’s Status Register *********/ stat_reg = iwpeek((unsigned short *)(base_addr + 0x04)); printf("Status register = 0x%4X\n", stat_reg);

Close and Open Channels

/********** close and open channels **********/

/* set all bits in register for channels 0-15 (offset 10) to 1 */ iwpoke((unsigned short *)(base_addr + 0x10), 0xffff);

/* read the E1442A relay control registers and print their value*/

/* relay control registers always return FFFF (hex) */ chan_0_15_reg = iwpeek((unsigned short *)(base_addr + 0x10)); chan_16_31_reg = iwpeek((unsigned short *)(base_addr + 0x12)); chan_32_47_reg = iwpeek((unsigned short *)(base_addr + 0x14)); chan_48_63_reg = iwpeek((unsigned short *)(base_addr + 0x16)); printf("Channels 00-15 register = 0x%4X\n", chan_0_15_reg); printf("Channels 16-31 register = 0x%4X\n", chan_16_31_reg); printf("Channels 32-47 register = 0x%4X\n", chan_32_47_reg); printf("Channels 48-63 register = 0x%4X\n", chan_48_63_reg); delay (100); /* wait 100 milliseconds before resetting module */

/* reset the E1442A to open all closed channels */

/* writing a 0 to the channels registers will also open channels */ reset_sw(base_addr);

Scan Channels

/********** scanning channels **********/


110


/* scan channels 0-15 (register offset 10) */ for (k=0; k15; k++)

{ iwpoke ((unsigned short *)(base_addr + 0x10), ldexp(1,k)); delay (50); /* delay to allow mechanical relays to close*/

}

/* sets all bits to 0 to open last closed channel */ iwpoke ((unsigned short *)(base_addr + 0x10), 0);


{ iwpoke ((unsigned short *)(base_addr + 0x12), ldexp(1,k)); delay (50);

}

/* sets all bits to 0 to open last closed channel */ iwpoke ((unsigned short *)(base_addr + 0x12), 0);



}

/* set all bits to 0 to open last closed channel */ iwpoke ((unsigned short *)(base_addr + 0x14), 0);



}

/* set all bits to 0 to open last closed channel */ iwpoke ((unsigned short *)(base_addr + 0x16), 0);

/* close session */ iclose(e1442a);

} /* end of main */


Programming Example Register-Based Programming

Reset Function

/**********************************************************/ void reset_sw(char *base_addr)

/* reset the module; open all relays (write a 1 to status bit 0) */

/* delay 100 ms for reset then set bit to 0 to allow closing of */

/* switches */

}

/* this function resets the switch module */ iwpoke((unsigned short *)(base_addr + 0x04), 1); delay (100); iwpoke((unsigned short *)(base_addr + 0x04), 0); }

}





User Guide

C

E1442A Error Messages

Error Types

Table C-2 lists the error messages generated by the E1442A Form C Switch module firmware when programmed by SCPI. Errors with negative values are governed by the SCPI standard and are categorized in Table C-1. Error numbers with positive values are not governed by the SCPI standard. See the E1406

Command Module User’s Manual for further details on these errors.

Table C-1 Error Types

Range

-199 to -100

-299 to -200

-399 to -300

-499 to -400

Error Types Description

Command Errors (syntax and parameter errors).

Execution Errors (instrument driver detected errors)

Device Specific Errors (instrument driver errors that are not command nor execution errors).

Query Errors (problem in querying an instrument)

113

E1442A Error Messages Error Messages

Error Messages

Table C-2 Error Messages

Code

-211

-213

-222

-224

-240

-310

1500

1510

2000

2001

2006

2008

2009

2010

2011

2012

2017

2600

2601

Error Message

Trigger ignored

Init Ignored

Data out of range

Illegal parameter value

Potential Cause(s)

Trigger received when scan not enabled. Trigger received after scan complete. Trigger too fast.

Attempting to execute an INIT command when a scan is already in progress.

Parameter value is outside valid range.

Attempting to execute a command with a parameter not applicable to the command.

Command failed due to hardware problem.

This error can result if an excessively long parameter list is entered.

Hardware error

System error, Internal driver error.

External trigger source already allocated

Trigger source non-existent

Invalid card number

Invalid channel number

Assigning an external trigger source to a switchbox when the trigger source has already been assigned to another switchbox.

Selected trigger source is not available on this platform (e.g., some triggers are not available on VXI B-size mainframes).

Addressing a module (card) in a switchbox that is not part of the switchbox.

Attempting to address a channel of a module in a switchbox that is not supported by the module (e.g.,, channel 99 of a multiplexer module).

Command not supported on this card

Scan list not initialized

Sending a command to a module (card) in a switchbox that is unsupported by the module.

Executing a scan without the INIT command.

Too many channels in channel list Attempting to address more channels than available in the switchbox.

Scan mode not allowed on this card

The selected scanning mode is not allowed with this module or you have misspelled the mode parameter (see SCAN:MODE command).

Empty channel list

Invalid Channel Range

No valid channels are specified in the < channel_list >.

Invalid channel(s) specified in SCAN < channel_list > command.

Attempting to begin scanning when no valid channel list is defined.

Config error 17, Slot 0 functions disabled

Function not supported on this card

Channel list required

Attempt to run a downloaded scan list with ARM:COUNt set to a value other than 1. Applies to FET switches only.

Sending a command to a module (card) in a switchbox that is not supported by the module or switchbox.

Sending a command requiring a channel list without the channel list.


This information is subject to change without notice.

© Keysight Technologies, 2019

Printed in Malaysia

Edition 4, October 2019

*E1442-90003*

E1442-90003 www.keysight.com

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