Keysight Technologies E8402A, E8404A User And Service Manual

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75000 Series C

User and Service Manual

Keysight E8402A, E8404A VXI Mainframes

Notices

No part of this manual may be reproduced in any form or by any means (including electronic storage and retrieval or translation into a foreign language) without prior agreement and written consent from Keysight Technologies, Inc. as governed by United States and international copyright laws.

Manual Part Number

E8402-90002

Edition

Third 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 technical support, refer to the support links on the following Keysight websites:

www.keysight.com/find/E8402A

(product-specific information and support, 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 product 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 EDITIONS. FURTHER, TO THE MAXIMUM EXTENT PERMITTED BY APPLICABLE LAW, KEYSIGHT DISCLAIMS ALL WARRANTIES, EITHER EXPRESS OR IMPLIED, WITH REGARD TO THIS MANUAL AND ANY INFORMATION CONTAINED HEREIN, INCLUDING BUT NOT LIMITED TO THE IMPLIED WARRANTIES OF MERCHANTABILITY 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 INFORMATION CONTAINED HEREIN. SHOULD KEYSIGHT AND THE USER HAVE A SEPARATE 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.) performance, safety, or regulatory compliance 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 software” 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’ standard commercial license terms, and nonDOD 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. Government users will receive no greater than Limited Rights as defined in FAR

52.227-14 (June 1987) or DFAR 252.2277015 (b)(2) (November 1995), as applicable in any technical data.

Safety Information

The following general safety precautions must be observed during all phases of operation of this instrument. Failure to comply with these precautions or with specific warnings or operating instructions in the product manuals violates safety standards of design, manufacture, and intended use of the instrument. Keysight Technologies assumes no liability for the customer's failure to comply with these requirements.

General

Do not use this product in any manner not specified by the manufacturer. The protective 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 electrical 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 personal injury.

Do Not Operate in an Explosive Atmosphere

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

Do Not Operate Near Flammable Liquids

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 module/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 personnel 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. Procedures 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 electrical shock, DO NOT perform procedures 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 product 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 disconnect may be impaired and must be considered part of the installation.

Do Not Modify the Instrument

Do not install substitute parts or perform any unauthorized modification to the product. Return the product to a Keysight Sales and Service Office to ensure that safety features are maintained.

In Case of Damage

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

Do NOT block vents and fan exhaust: To ensure adequate cooling and ventilation, 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 damaging equipment, fill each empty slot with an AXIe filler panel module.

Do NOT stack free-standing chassis: Stacked chassis should be rackmounted.

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 specification. Exceeding safe operating conditions 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 temperatures may exceed safe handling conditions 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.

Safety Symbols

A CAUTION denotes a hazard. It calls attention to an operating procedure or practice, that, if not correctly 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 conditions are fully understood and met.

A WARNING denotes a hazard. It calls attention to an operating procedure or practice, that, if not correctly performed or adhered to, could result in personal injury or death. Do not proceed beyond a WARNING notice until the indicated conditions are fully understood and met.

Products display the following symbols:

Warning, risk of electric shock

Refer to manual for additional safety information.

Earth Ground.

Chassis Ground.

Alternating Current (AC).

Direct Current (DC)

Contents

1 Getting Started

Product Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

Preparing Your VXI System for Use . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

AC Power Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

Positioning the Mainframe for Adequate Cooling . . . . . . . . . . . . . . . . . . . . 16

Connecting the Mainframe to a Permanent Earth Ground . . . . . . . . . . . . . 17

Installing VXI Instruments . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

Installing C-Size Instruments . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

Installing A- and B-Size Instruments . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21

Configuring Your Mainframe . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22

Setting the Enhanced Monitor VXI Logical Address . . . . . . . . . . . . . . . . . . 22

RS-232 Interface. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23

External +5V Supply . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23

Using the Remote Power-On Pins . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24

Disabling the On/Stdby Switch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25

Mainframe Options and Accessories . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26

2 Using the Enhanced Monitor

Using the Enhanced Monitor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29

Using the Display . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31

Enhanced Monitor Fan Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35

Software Control of Fan Speed. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35

Setting Enhanced Monitor Limits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37

Temperature Limits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37

Current and Power Limits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37

Handling Warnings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38

Save The Limits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38

Enhanced Monitor Measurement Cycles. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39

Using the History Queue . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40

HISTory Queue . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40

RS-232 Programming . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41

Diagnostic Connector . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43

+5VC (pin 6). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44

+12VC (pin 7). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44

+5V STDBY (pins 8, 21). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44

SYSRESET* (pin 10). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44

ACFAIL* (pin 23) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44

Keysight E1406A User Manual and SCPI Programming Guide vii

3 Programming the Enhanced Monitor

Understanding SCPI Commands. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45

Common Command Format . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45

SCPI Command Format . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45

Command Separator. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46

Abbreviated Commands . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46

Implied Commands . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46

Parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47

Programming Examples . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48

Example 1: Self Test & Verification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49

Example 2: Setting up the Mainframe . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51

Example 3: Set-up the RS-232. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54

Example 4: Reading Current Status Information . . . . . . . . . . . . . . . . . . . . . 56

SCPI Command Reference. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60

CALibration Subsystem . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60

Subsystem Syntax. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60

DISPlay Subsystem . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60

Subsystem Syntax. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60

DISPlay[:WINDow] <display window>

DISPlay[:WINDow]?. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61

DISPlay[:WINDow]:STATe <state>

DISPlay[:WINDow]:STATe? . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65

DISPlay[:WINDow]:TEXT[:DATA] <string>. . . . . . . . . . . . . . . . . . . . . . . . . . . 66

FORMat Subsystem . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 68

Subsystem Syntax. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 68

FORMat:BORDer <order>

FORMat:BORDer? . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 68

HISTory Subsystem . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 69

Subsystem Syntax. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 69

HISTory:BLOWer[:HISTogram]? <blower>[,MIN|MAX] . . . . . . . . . . . . . . . . . 70

HISTory:CURRent:CMAXimum? <supply> . . . . . . . . . . . . . . . . . . . . . . . . . . 72

HISTory:CURRent[:HISTogram]? <supply>[,MIN|MAX]. . . . . . . . . . . . . . . . . 73

HISTory:CURRent:MAXimum? <supply> . . . . . . . . . . . . . . . . . . . . . . . . . . . 75

HISTory:POWer:CMAXimum? <supply> . . . . . . . . . . . . . . . . . . . . . . . . . . . . 76

HISTory:POWer[:HISTogram]? <supply>[,MIN|MAX] . . . . . . . . . . . . . . . . . . 77

HISTory:POWer:MAXimum? <supply> . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 79

HISTory:QUEue:COUNt? . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 81

HISTory:QUEue[:FETCh]? <event index>. . . . . . . . . . . . . . . . . . . . . . . . . . . . 82

HISTory:RESet[:ALL] HISTory:RESet:BLOWer [<blower>] HISTory:RESet:CURRent [<supply>] HISTory:RESet:POWer [<supply>] HISTory:RESet:QUEue HISTory:RESet:TEMPerature [<slot>]

HISTory:RESet:VOLTage [<supply>] . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 85

viii Keysight E1406A User Manual and SCPI Programming Guide

HISTory:TEMPerature:CMAXimum? <slot>

HISTory:TEMPerature:CMINimum? <slot> . . . . . . . . . . . . . . . . . . . . . . . . . . 87

HISTory:TEMPerature[:HISTogram]? <slot>[,MIN|MAX] . . . . . . . . . . . . . . . . 89

HISTory:TEMPerature:MAXimum? <slot>

HISTory:TEMPerature:MINimum? <slot> . . . . . . . . . . . . . . . . . . . . . . . . . . . 91

HISTory:TIME:LCALibration?. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 93

HISTory:TIME:LHReset? . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 94

HISTory:TIME:LTST? . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 95

HISTory:TIME:ON? . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 96

HISTory:TIME:OPERating? . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 97

HISTory:UNIT[:TIME] <unit>

HISTory:UNIT[:TIME]? . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 98

HISTory:VOLTage:CMAXimum? <supply>

HISTory:VOLTage:CMINimum? <supply> . . . . . . . . . . . . . . . . . . . . . . . . . . 100

HISTory:VOLTage[:HISTogram]? <supply>[,MIN|MAX] . . . . . . . . . . . . . . . . 101

HISTory:VOLTage:MAXimum? <supply>

HISTory:VOLTage:MINimum? <supply> . . . . . . . . . . . . . . . . . . . . . . . . . . . 103

STATus Subsystem. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 105

Subsystem Syntax . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 107

STATus:OPERation:CONDition? . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 109

STATus:OPERation:ENABle <mask>

STATus:OPERation:ENABle? . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 111

STATus:OPERation:EVENt?. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 113

STATus:PRESet . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 114

STATus:QUEStionable:BLOWer:CONDition? . . . . . . . . . . . . . . . . . . . . . . . 115

STATus:QUEStionable:BLOWer:ENABle <mask>

STATus:QUEStionable:BLOWer:ENABle? . . . . . . . . . . . . . . . . . . . . . . . . . . 117

STATus:QUEStionable:BLOWer:EVENt? . . . . . . . . . . . . . . . . . . . . . . . . . . . 119

STATus:QUEStionable:BLOWer:LEVel?. . . . . . . . . . . . . . . . . . . . . . . . . . . . 120

STATus:QUEStionable:BLOWer:SPEed? <blower>[,MIN|MAX] . . . . . . . . . 121

STATus:QUEStionable:CONDition?. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 122

STATus:QUEStionable:CURRent:CONDition?. . . . . . . . . . . . . . . . . . . . . . . 124

STATus:QUEStionable:CURRent:ENABle <mask>

STATus:QUEStionable:CURRent:ENABle? . . . . . . . . . . . . . . . . . . . . . . . . . 126

STATus:QUEStionable:CURRent[:EVENt]? . . . . . . . . . . . . . . . . . . . . . . . . . 128

STATus:QUEStionable:CURRent:LEVel? <supply>[,MIN|MAX]. . . . . . . . . . 129

STATus:QUEStionable:CURRent:LIMit <supply>,<value>

STATus:QUEStionable:CURRent:LIMit? <supply> [,MIN|MAX]. . . . . . . . . . 131

STATus:QUEStionable:ENABle <mask>

STATus:QUEStionable:ENABle? . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 133

STATus:QUEStionable[:EVENt]? . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 135

STATus:QUEStionable:POWer:LEVel? <supply>[,MIN|MAX] . . . . . . . . . . . 136

STATus:QUEStionable:POWer:LIMit <limit>

STATus:QUEStionable:POWer:LIMit? [MIN|MAX] . . . . . . . . . . . . . . . . . . . . 137

STATus:QUEStionable:TEMPerature:CONDition?. . . . . . . . . . . . . . . . . . . . 138

STATus:QUEStionable:TEMPerature:ENABle <mask>

STATus:QUEStionable:TEMPerature:ENABle? . . . . . . . . . . . . . . . . . . . . . . 140

STATus:QUEStionable:TEMPerature:EVENt? . . . . . . . . . . . . . . . . . . . . . . . 142

STATus:QUEStionable:TEMPerature:LEVel? <slot>[,MIN|MAX] . . . . . . . . . 143

Keysight E1406A User Manual and SCPI Programming Guide ix

STATus:QUEStionable:TEMPerature:LIMit <slot>,<value1>[,<value2>[,<value3>]]

STATus:QUEStionable:TEMPerature:LIMit? <slot>[,MIN|MAX]. . . . . . . . . . 144

STATus:QUEStionable:UMCounter:TINTerval <time>

STATus:QUEStionable:UMCounter:TINTerval? . . . . . . . . . . . . . . . . . . . . . . 146

STATus:QUEStionable:UMCounter:TREMaining? . . . . . . . . . . . . . . . . . . . . 147

STATus:QUEStionable:UMCounter:TRESet. . . . . . . . . . . . . . . . . . . . . . . . . 148

STATus:QUEStionable:VOLTage:CONDition? . . . . . . . . . . . . . . . . . . . . . . . 149

STATus:QUEStionable:VOLTage:ENABle <mask>

STATus:QUEStionable:VOLTage:ENABle? . . . . . . . . . . . . . . . . . . . . . . . . . . 151

STATus:QUEStionable:VOLTage:EVENt?. . . . . . . . . . . . . . . . . . . . . . . . . . . 153

STATus:QUEStionable:VOLTage:LEVel? <supply>[,MIN|MAX] . . . . . . . . . . 154

STATus:QUEStionable:VOLTage:PTR <mask>

STATus:QUEStionable:VOLTage:PTR?. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 155

STATus:SCONdition? . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 157

SYSTem Subsystem . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 159

Subsystem Syntax. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 159

SYSTem:BEEPer:FREQuency <frequency>

SYSTem:BEEPer:FREQuency? [MIN | MAX] . . . . . . . . . . . . . . . . . . . . . . . . 161

SYSTem:BEEPer[:IMMediate] [<frequency>[,<duration>]] . . . . . . . . . . . . . 162

SYSTem:BEEPer:STATe <state>

SYSTem:BEEPer:STATe? . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 163

SYSTem:BEEPer:TIME <duration>

SYSTem:BEEPer:TIME? . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 164

SYSTem:BLOWer:STATe <state>

SYSTem:BLOWer:STATe?. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 165

SYSTem:COMMunicate:SERial:CONTrol:RTS <rts>

SYSTem:COMMunicate:SERial:CONTrol:RTS? . . . . . . . . . . . . . . . . . . . . . . 167

SYSTem:COMMunicate:SERial:ECHO <echo>

SYSTem:COMMunicate:SERial:ECHO?. . . . . . . . . . . . . . . . . . . . . . . . . . . . 168

SYSTem:COMMunicate:SERial:ERESponse <eresponse>

SYSTem:COMMunicate:SERial:ERESponse? . . . . . . . . . . . . . . . . . . . . . . . 169

SYSTem:COMMunicate:SERial:LBUFfer <lbuffer>

SYSTem:COMMunicate:SERial:LBUFfer? . . . . . . . . . . . . . . . . . . . . . . . . . . 170

SYSTem:COMMunicate:SERial:PRESet[:ALL] SYSTem:COMMunicate:SERial:PRESet:RAW

SYSTem:COMMunicate:SERial:PRESet:TERMinal . . . . . . . . . . . . . . . . . . . 171

SYSTem:COMMunicate:SERial[:RECeive]:BAUD <baud>|MIN|MAX|DEF

SYSTem:COMMunicate:SERial[:RECeive]:BAUD?. . . . . . . . . . . . . . . . . . . . 172

SYSTem:COMMunicate:SERial[:RECeive]:BITS <bits>

SYSTem:COMMunicate:SERial[:RECeive]:BITS?. . . . . . . . . . . . . . . . . . . . . 173

SYSTem:COMMunicate:SERial[:RECeive]:PACE <pace>

SYSTem:COMMunicate:SERial[:RECeive]:PACE? . . . . . . . . . . . . . . . . . . . . 175

SYSTem:COMMunicate:SERial[:RECeive]:PARity[:TYPE] <parity>

SYSTem:COMMunicate:SERial[:RECeive]:PARity[:TYPE]? . . . . . . . . . . . . . 176

SYSTem:COMMunicate:SERial[:RECeive]:SBITs <bits>

SYSTem:COMMunicate:SERial[:RECeive]:SBITs? [MIN|MAX|DEF] . . . . . . . 178

SYSTem:COMMunicate:VXI:ADDRess? <address>. . . . . . . . . . . . . . . . . . . 180

SYSTem:DATE:LMAintenance? . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 181

SYSTem:ERRor?. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 182

x Keysight E1406A User Manual and SCPI Programming Guide

SYSTem:HELP:HEADers? . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 183

SYSTem:MODel?. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 184

SYSTem:NAME <name>

SYSTem:NAME? . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 185

SYSTem:NVDefault . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 187

SYSTem:NVRecall. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 189

SYSTem:NVSave . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 190

SYSTem:POWer <state>

SYSTem:POWer?. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 192

SYSTem:POWer:CYCLe? . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 194

SYSTem:POWer:SOURce? . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 195

SYSTem:POWer:STATus? . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 196

SYSTem:SNUMber <string>

SYSTem:SNUMber? . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 197

SYSTem:VERSion? . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 199

TEST Subsystem . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 200

Subsystem Syntax . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 200

TEST[:ALL]?. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 201

TEST:BLOWer? [<blower>] . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 203

TEST:DISPlay?. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 205

TEST:MEMory? . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 206

TEST:RESults[:CODE]? . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 207

TEST:RESults:VERBose? [<code>] . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 208

TEST:SENSe? . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 209

TEST:TEMPerature? . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 210

TEST:TIME?. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 211

TRACe Subsystem . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 212

Subsystem Syntax . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 212

TRACe[:DATA]? <name> . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 213

TRACe[:DATA]:PREamble? <name> . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 215

TRACe:POINts? <name>. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 217

IEEE Common Commands . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 218

*CLS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 219

*ESE <mask>

*ESE?. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 220

*ESR? . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 222

*IDN?. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 223

*OPC

*OPC? . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 224

*PSC

*PSC? . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 225

*RST . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 227

*SRE <mask>

*SRE? . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 228

*STB?. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 230

*TST?. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 232

Keysight E1406A User Manual and SCPI Programming Guide xi

*WAI. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 233

SCPI Command Quick Reference . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 234

Common Command Quick Reference . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 242

4 Calibrating and Verifying Performance

Recommended Test Equipment. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 243

Functional Verification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 243

Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 244

Calibration and Performance Verification . . . . . . . . . . . . . . . . . . . . . . . . . . . . 245

Test Conditions & Procedures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 245

Issuing Commands . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 245

Temperature Monitor Calibration & Verification. . . . . . . . . . . . . . . . . . . . . 245

Calibration Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 246

Verification Procedure. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 247

Voltage Monitor Calibration & Verification . . . . . . . . . . . . . . . . . . . . . . . . . 247

Calibration Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 248

Verification Procedure. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 249

Timer Test Verification. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 249

Performance Test Record. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 250

Test Equipment Used: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 250

CALibration Subsystem . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 253

Subsystem Syntax. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 253

CALibration[:ALL]?. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 253

CALibration:TEMPerature? . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 255

CALibration:VALue:TEMPerature <value>

CALibration:VALue:TEMPerature? . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 257

CALibration:VALue:VOLTage <supply>,<value>

CALibration:VALue:VOLTage? <supply> . . . . . . . . . . . . . . . . . . . . . . . . . . . 259

CALibration:VOLTage?. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 261

5 Servicing Your Mainframe

Chapter Overview. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 263

Problem Isolation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 263

No Power Line Fuse . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 263

Replacing Assemblies . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 265

Removing the Rear Panel from the Mainframe . . . . . . . . . . . . . . . . . . . . . 265

Removing the Mainframe Cover . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 267

Replacing the Internal Temperature Sensor Boards . . . . . . . . . . . . . . . . . 268

Replacing the Enhanced Monitor Controller Board . . . . . . . . . . . . . . . . . . 269

Replacing the Keysight E8402A Power Supply . . . . . . . . . . . . . . . . . . . . . 270

Replacing the Keysight E8404A Power Supply . . . . . . . . . . . . . . . . . . . . . 271

Replacing the Impeller . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 272

xii Keysight E1406A User Manual and SCPI Programming Guide

Replacing the Enhanced Monitor Display Lamp . . . . . . . . . . . . . . . . . . . . 273

Replacement Power Cords . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 274

A Keysight E8402, E8404A Product Specifications

Product Descriptions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 277

General Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 277

Mechanical Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 277

Output Power Specifications. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 278

Total Available and Usable Power . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 278

Peak and Dynamic Current. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 278

Output Voltage Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 278

Input Power Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 279

Mains Power Installation Category II . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 280

Cooling Specifications. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 280

Cooling Specification Charts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 280

Cooling Mode (High or Variable) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 281

Airflow Path . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 282

Acoustical Noise Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 282

Backplane Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 282

General Monitor Specifications. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 282

Indicators . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 282

Switches . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 283

Diagnostic Connector. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 283

Enhanced Monitor Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 284

Temperature Monitor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 284

Voltage Monitor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 284

Current Monitor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 285

Power Monitor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 285

Fan Speed Monitor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 285

Timer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 285

Front Panel Display. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 285

VXIbus Interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 285

RS232 Interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 286

Environmental Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 287

Temperature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 287

Safety Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 287

Electromagnetic Compliance Specifications . . . . . . . . . . . . . . . . . . . . . . . 288

Power Supply Protection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 289

Repair . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 289

Keysight E1406A User Manual and SCPI Programming Guide xiii

B Rack Mounting and Option Installation

Chapter Overview. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 291

Rack Mounting the Keysight E840xA Mainframe . . . . . . . . . . . . . . . . . . . . . . 291

Parts List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 292

Rack Mounting the Keysight E840xA using Support Rails. . . . . . . . . . . . . 293

Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 293

Rack Mounting the Keysight E840xA Using Rack Slide Rails . . . . . . . . . . 297

Installing the Cable Tray . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 302

Parts List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 302

Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 302

Installing the Tinted Acrylic Door (Option 915). . . . . . . . . . . . . . . . . . . . . . . . 305

Parts List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 305

Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 305

Installing the Intermodule Chassis Shields . . . . . . . . . . . . . . . . . . . . . . . . . . . 307

Parts List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 307

Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 307

Installing the Backplane Connector Shields . . . . . . . . . . . . . . . . . . . . . . . . . . 309

Parts List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 309

Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 310

Keysight E840xA Air Filter Kit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 311

xiv Keysight E1406A User Manual and SCPI Programming Guide

Keysight E8402A, E8404A C-Size Mainframes User and Service Guide

1 Getting Started

This chapter contains general information on the operating features of the E8402A and E8404A C-Size VXI mainframes. The following table lists the major differences between these two mainframes:

Unless otherwise specifically noted, descriptions in this manual relate to both VXI mainframes. The designation Keysight E840xA refers to both mainframes. Chapter 2 provides a complete Enhanced Monitor description.

Product Overview

The Keysight E840xA VXI mainframes are designed in full compliance with VXIbus specification revision 1.4, VXIplug&play specification VPP-8, and VMEbus system specification revision C.1. Additional features of the Keysight E840xA mainframes include:

– Mainframe monitoring of:

Power Supply

500 W 1000 W

Keysight E8402A Mainframe ü ü

Keysight E8404A Mainframe ü ü

-- backplane voltage conditions

-- individual slot and power supply temperatures

Enhanced

Monitor

-- fan and impeller operation

– State of the art cooling technology:

-- quiet, variable speed power supply fan and backplane impeller

-- increased static pressure

– Front panel Diagnostic Connector for:

-- power supply voltage measurements

-- power supply and backplane temperature measurements

-- power supply fan and backplane impeller verification

Getting Started Preparing Your VXI System for Use

– Color Graphical Enhanced Monitor Display:

-- Help messages localized in English, French, German, Spanish

-- Stripcharts and Histograms for easy diagnostics

-- Three Temperature sensors per mainframe slot

-- Display of each power supply voltage or current

-- User text messages

– Easy maintenance:

-- rear panel access to power supply, power supply fan, and cooling impeller for either bench or rack mount operation.

Preparing Your VXI System for Use

The Keysight E840xA mainframes are shipped from the factory ready to use. This section describes important mainframe installation procedures.

AC Power Requirements

The Keysight E840xA mainframes can be operated at line voltages of 90 VAC to 264 VAC, and line frequencies of 47 Hz to 66 Hz. The mainframe can also operate at 360 Hz to 440 Hz with line voltages of 90 VAC to 132 VAC.

The mainframes ship with a power cord and with a fast blow fuse installed. The fuse is suitable for all line voltages. The fuse is not user replaceable. Refer to “Replacement Power Cords” on page 274 for additional information on E840xA power cords and on fuse replacement. Appendix A contains complete input power specifications.

The power cord is the only way to disconnect the mainframe from AC power and, therefore, it must be accessible to the operator at all times. When the Keysight E840xA mainframes are mounted in a system cabinet, the power cord need not be accessible since the cabinet must have its own disconnect device.

Positioning the Mainframe for Adequate Cooling

VXI instruments are cooled by air drawn through the back of the mainframe and exhausted out the sides. The power supply is cooled by air drawn from the right side (facing the mainframe) and exhausted out the left side. When placing the mainframe on a work bench or if the mainframe is rack mounted, provide at least a one inch clearance at the back and sides to allow for proper air flow.

16 Keysight E8402A, E8404A C-Size Mainframes User and Service Guide

Preparing Your VXI System for Use Getting Started

TOOTHED

WASHERS

BACK COVER

WIRE LUG

GREEN WIRE

WITH YELLOW

STRIPE

PERMA NENT EA RTH

GROUND CONNECTION

LOCATION

Air filters are not necessary on these mainframes. However, an optional air filter kit (mainframe option 938 or Keysight E8401-80938) is available for use in harsh environments. The airflow is restricted less than 10% with the air filter installed. Refer to “Keysight E840xA Air Filter Kit” on page 311 for installation information.

Connecting the Mainframe to a Permanent Earth Ground

The mainframe must be connected to a permanent earth ground for line frequencies greater than 66 Hz. This connection is made on the back of the mainframe:

1 Connect a 16 AWG (1.3 mm or larger) wire to the PEM nut shown in Figure 1.

The wire must be green with a yellow stripe, or bare (no insulation). Use a m4 x 10 screw, grounding lug, and toothed washers (or toothed lug) as shown in the figure below.

2 Attach the other end of the wire to a permanent earth ground using toothed

washers or a toothed lug.

Figure 1-1 Connecting an Keysight E840xA Mainframe to a Permanent Earth Ground

(Keysight E8404 shown, Keysight E8402 is similar)

Keysight E8402A, E8404A C-Size Mainframes User and Service Guide 17

Getting Started Preparing Your VXI System for Use

For protection from electrical shock when operating at frequencies greater than 66 Hz, connect the chassis ground terminal to permanent earth ground.

AVERTISSEMENT

Risque de Choch èlectrique. Si la frèquence du secteur est supèrieure à 66 Hz, relier la borne de masse du chassis à une prise de terre fixe.

18 Keysight E8402A, E8404A C-Size Mainframes User and Service Guide

Installing VXI Instruments Getting Started

Installing VXI Instruments

The Keysight E840xA mainframes have 13 slots labeled 0 through 12. Any VXI instrument can be installed in any slot; however, slot 0 is reserved for devices capable of providing the system’s slot 0 functionality. This functionality includes:

– locating instruments installed in the mainframe – managing (arbitrating) data flow across the backplane – providing the system clock (SYSCLK - 16 MHz)

Examples of these devices are the Keysight E1406 Command Module and embedded controllers such as the Keysight E623x series VXI Pentium PCs, the Keysight RADEPC7B PC, and the Keysight E1497/E1498 V743 controllers.

Multiple instruments which combine to create a virtual instrument (e.g. a scanning multimeter), and instruments which access the backplane local bus should be installed in adjacent slots.

1 To prevent damage to the VXI instruments, turn off the mainframe prior to

installing the instruments.

2 Insert the instrument into the mainframe by aligning the instrument with the

card guides inside the mainframe. Slowly push the instrument into the slot until it seats in the backplane connectors. The front panel of the instrument should be even with the front edges of the mainframe.

3 Tighten the retaining screws on the top and bottom of the module.

All instruments within the VXI mainframe are grounded through the mainframe chassis. During installation, tighten the instrument's retaining screws to secure the instrument to the mainframe and to make the ground connection.

Keysight E8402A, E8404A C-Size Mainframes User and Service Guide 19

Getting Started Installing VXI Instruments

Retaining

Screws

Extraction

Levers

Slide the module

into the mainframe

until it plugs into the

backplane connectors

Seat the module by pushing in the extraction levers

Installing C-Size Instruments

Figure 2 shows the installation of C-Size instruments.

Figure 1-2 Installing C-Size Instruments in the Keysight E840xA Mainframe

20 Keysight E8402A, E8404A C-Size Mainframes User and Service Guide

Installing VXI Instruments Getting Started

Slide the Adapter Module into

the Mainframe until it plugs into

the Backplane Connector

Connects

the Adapter Module until it

Slide the B-Size Module into

Installing A- and B-Size Instruments

Figure 3 shows the installation of A- and B-size instruments.

– Keysight E1403B A/B-size Module Carrier extends the P1 connector on the

VXIbus backplane and mounts the (A/B-size) modules flush with C-size modules. This carrier is recommended for Keysight B-size, slave-only devices which have the P1 connector.

– Keysight E1407A A/B Module Carrier extends the P1and P2 connectors on

the VXIbus backplane. This carrier is recommended for B-Size, slave-only devices which have the P1/P2 connectors.

Figure 1-3 Installing A- and B-Size Instruments in the Keysight E840xA Mainframe

Keysight E8402A, E8404A C-Size Mainframes User and Service Guide 21

Getting Started Configuring Your Mainframe

128

64 32 16

8 4 2 1

LADDR

32+64+128=2 24

CLOSED = Switch Set to 1 (ON) OPEN = Switch Set to 0 (OFF)

RS-232

Configuring Your Mainframe

Setting the Enhanced Monitor VXI Logical Address

The Enhanced Monitor of the Keysight E8402 and E8404 mainframes plugs into the VXI backplane from the rear of the mainframe. It does not occupy a slot in the mainframe or tie-up the MODID line. The enhanced monitor is a message-based device, allowing easy communication over the VXIbus (for example, through a command module or embedded controller) or a standard RS-232 interface. The enhanced monitor does require a VXIbus address; 224 is the factory default. Figure 4 shows the rear panel of the Keysight E8402/E8404 VXI mainframe with the Enhanced Monitor logical address switches and RS-232 interface.

Figure 1-4 Rear panel of the Keysight E8402 and E8404 VXI Mainframes

+5V EXT

22 Keysight E8402A, E8404A C-Size Mainframes User and Service Guide

Configuring Your Mainframe Getting Started

RS-232 Interface

The RS-232 interface on the rear panel of the Enhanced Monitor mainframes (Keysight E8402 and E8404) can be used to control the Enhanced Monitor from a computer or a terminal.

Refer to Chapter 3 for RS-232 programming information. The

SYSTem:COMMunicate:SERial ... commands set and/or modify the configuration

of the Enhanced Monitor's serial interface. Serial communication commands take effect after the end of the program message containing the command(s).

Default RS-232 parameters are:

– Baud: 9600 – Bits: 8 – Parity: None – Stop bits: 1 – DTR/RTS: On – Pace: XON – Echo: On – ERES: On – Line buffer: On

External +5V Supply

The External +5V supply is for powering the Enhanced Monitor (including the RS-232 interface) while the mainframe is powered down (standby mode). This requires a stable 5 volt supply capable of 1.5A amps maximum (500mA typical, refer to specifications in Appendix A). Refer to Figure 4.

If you use the Enhanced Monitor RS-232 interface (located on the back of the mainframe) while the mainframe is in the standby mode, you must supply an external +5Vdc to the +5VEXT connector (located near the RS-232 interface). If you use the RS-232 interface while the mainframe is powered on, you do not need to provide the external +5Vdc.

Keysight E8402A, E8404A C-Size Mainframes User and Service Guide 23

Getting Started Configuring Your Mainframe

25 18

Power

Supply

Front

Panel

Switch

BACKPLANE

SUB D

CONNECTOR

HP E840X

Using the Remote Power-On Pins

The remote power-on pins (pins 5 and 18) of the Diagnostic Connector allow you to turn the mainframe on and off without using the front panel On/Stdby switch. With the On/Stdby switch in the Stdby (off) position, connecting pin 5 to pin 18 on the diagnostic connector turns the mainframe on. Disconnecting pin 5 from pin 18 turns the mainframe off.

Figure 1-5 Remote Standby Switch Wiring.

Pin 18 is ground in the Keysight E8402 and E8404 mainframes. Therefore, you only need to ground pin 5 to turn the mainframe on.

24 Keysight E8402A, E8404A C-Size Mainframes User and Service Guide

Configuring Your Mainframe Getting Started

Location of Resistor

Unplug

Disabling the On/Stdby Switch

The front panel On/Stdby switch is disabled by removing surface mount 0 resistor located on the front monitor board (see Figure 6). The resistor is labeled:

REM PWR JUMPER.

Figure 1-6 Disabling the On/Stdby Switch

After removing the 0 resistor, heat damage may prevent the resistor from being re-installed to re-enable the On/Stdby switch.

To access the Monitor Display Board and resistor:

1 Turn off the mainframe and remove the power cord.

2 Remove the mainframe cover by removing the 10 m3x6 flat head torx screws.

3 Remove the 0resistor by heating both sides simultaneously with soldering

irons. Separate the resistor from the board by gently pressing the tips of the soldering irons together.

4 Save the resistor in order to re-enable the On/Stdby switch. Again, heat

damage may prevent the resistor from being re-installed.

Keysight E8402A, E8404A C-Size Mainframes User and Service Guide 25

Getting Started Mainframe Options and Accessories

Mainframe Options and Accessories

Table 0-1. Keysight E840xA VXI Mainframes options and accessories

Description Option Number Product Number

Cable Tray Kit Option 914 Keysight

E8400-80914

Tinted Acrylic Door Kit Option 915 Keysight

E8400-80915

Backplane Connector Shields Option 918 Keysight

E8400-80918

Intermodule Chassis Shield Kit N/A Keysight

E8400-80919

Standard Rack Mount Adapter Kit Option 923 Keysight

E8400-80923

Flush Rack Mount Kit Option 924 Keysight

E8400-80924

VXIplug&play (VPP-8) Compatible Rack Mount Kit Option 925 Keysight

E8400-80925

Air Filter Accessory Kit Option 938 Keysight

E8400-80938

Support Rail for Standard Rack Mount Adapter or Flush Rack Mount Kit N/A Keysight E3664A

Support Rail for VXIplug&play (VPP-8) Compatible Rack Mount Kit N/A Keysight E3663A

Rack Slide Kit for Standard Adapter Kit or VXIplug&play (VPP-8) Compatible Rack Mount Kit

N/A Keysight

1494-0411

26 Keysight E8402A, E8404A C-Size Mainframes User and Service Guide

Keysight E8402A, E8404A C-Size Mainframes User and Service Guide

2 Using the Enhanced Monitor

The Enhanced Monitor on the front panels of the Keysight 840xA mainframes allow you to monitor power supply voltages, mainframe temperatures, fan operation, and backplane activity. Figure 1 shows the mainframe front panel.

The enhanced monitor provides features such as:

– Monitoring the mainframe operating status including: blower status, slot

temperatures, and power supply voltages, current, and power. The Enhanced Monitor generates a warning if any of these parameters exceed limits. Refer to Chapter 3 for programming details.

– User-definable temperature limits for individual slots; if the limit is

exceeded, a beeper sounds, LEDs flash, and the display shows the warning condition.

– Storing a history of power supply voltages, currents, and power; slot

temperatures; fan speeds; events such as mainframe power cycled on/off, etc.

In addition, you can:

– Perform internal Enhanced Monitor Self Tests. These verify its fans and its

ability to measure the slot temperatures and power supply voltages and currents, etc.

– Set and query Enhanced Monitor system parameters. The Enhanced

Monitor functions are programmable through either the system commander (command module or embedded controller) or via an RS-232 port on the back of the mainframe.

– Write user text messages to the front panel display. This is useful for

communicating with an operator.

Using the Enhanced Monitor

Section Indicator / Switch Description

Power On Indicator

Green - the mainframe is turned on.

Standby Indicator

System Power Supply

Indicator

Temp Indicator

Fans Fan Switch

Fans Indicator

Backplane Activity Indicator

Amber - the mainframe is in standby mode; no power is applied to VXI modules.

Both Indicators Off - there is no power applied to the mainframe.

Green - all voltages, currents, and power supply temperatures are within expected operating ranges.

Flashing Amber - one or more power supply measurements are out of limit.

Green - all the individual slot temperatures and ambient temperatures are within normal operating ranges.

Flashing Amber - one or more slot temperatures or the ambient temperature has exceeded specified limits.

Full - the power supply and mainframe cooling fans are operating at full speed.

Var(iable) - the power supply and mainframe cooling fans are providing user-specified cooling level. Fan speed is a function of the power supply temperature, ambient temperature, and individual slot temperatures. Fan speeds operate at the lowest possible speed to maintain user-specified cooling level.

Green - the power supply and mainframe cooling fans are operating within expected ranges.

Flashing Amber - the power supply fan or the mainframe cooling fan is not operating within expected ranges.

Green - there is communication between instruments across the backplane. Off - there is no communication between instruments on the backplane.

SYSFAIL Indicator

Reset Switch

Diagnostic Connector

Display and Keypad

Amber - one or more instruments has asserted its SYSFAIL line due to a power-on initialization failure, self-test failure, or hardware failure. SYSFAIL is asserted momentarily at power on and during a system reset.

Pressing the reset button asserts the SYSRESET* line on the VXI backplane. When low, this line resets the VXI system; all VXI instruments are rest to their power-on state.

Refer to “Diagnostic Connector” on page 43.

Refer to “Using the Enhanced Monitor” on page 29

Figure 2-1 Keysight E8402A and E8404A Enhanced Monitoring Front Panel

28 Keysight E8402A, E8404A C-Size Mainframes User and Service Guide

Using the Enhanced Monitor Using the Enhanced Monitor

Using the Enhanced Monitor

The Enhanced Monitor is a separate PC board that plugs into the VXI backplane from the rear of the mainframe. In this way it does not occupy a user slot on the front of the mainframe. The Enhanced Monitor uses a standard-defined P1 Connector but a uniquely-defined P2 Connector. It is a message-based, slave-only VXI interface card, complete with its own VXI logical address. Refer to Chapter 3 of this manual for SCPI programming information. This section provides general information about the Enhanced Monitor.

– RS-232 Interface supports communication with a terminal or

computer for remote monitoring purposes only. Refer to Chapter 3 for SCPI programming information.

-- All SCPI command are supported by the RS-232 interface.

-- The RS-232 interface is set-up only through SCPI commands. Settings are stored in non-volatile memory. Factory defaults are: 9600 Baud, 8 bits, No Parity, 1 Stop Bit, DTR/RTS On, XON Pacing.

– Ambient Temperature Monitor (

the intake air stream path just above the mainframe impeller.

-- A user-defined limit can be set, default is 55

-- Limit is restored from non-volatile memory at power-on.

-- When the limit is exceeded, the monitor generates a warning on the display, sets a status bit, the temperature LED flashes, and the beeper sounds (if enabled).

– Power Supply Temperature Monitor (

located under a power supply transformer. The reading is indicative of overall power supply loading.

-- If the temperature exceeds an expected level, the monitor generates a warning on the display, sets a status bit, the power supply LED flashes, and the beeper sounds (if enabled).

– Module Exhaust (Slot) Temperature Monitor (

sensors, front, middle, and rear are located above each slot.

-- Temperatures may be queried in actual rise above ambient (in

-- User-definable limits can be set for the entire cardcage or on a slot-by slot basis.

±2 °C). The sensor is located in

°C.

±2 °C). The sensor is

±2 °C). Three

°C or as temperature

°C).

-- Limit may be set in actual temperature (default is +65 and as temperature rise above ambient (default is +15

-- Limits are restored from non-volatile RAM at power-on.

Keysight E8402A, E8404A C-Size Mainframes User and Service Guide 29

°C)

°C).

Using the Enhanced Monitor Using the Enhanced Monitor

-- If a slot temperature exceeds the specified limit, the monitor generates a warning on the display, sets a status bit, the temperature LED flashes, and the beeper sounds (if enabled).

– Voltage Monitor measures all seven power supply voltages (+5,

±12, ±24, -5.2V, and -2V).

-- Voltages outside of fixed limits (based on VXI specifications) causes the monitor to generate a warning on the display, set a status bit, the Power Supply LED flashes, and the beeper sounds (if enabled).

– Current Monitor measures the current from all seven power

supplies (+5, ±12, ±24, -5.2V, and -2V).

-- Currents exceeding user-specified limits (defaults to mainframe specifications +10%) causes the monitor to generate a warning on the display, set a status bit, the Power Supply LED flashes, and the beeper sounds (if enabled).

– Power Monitor calculates the total output power of the power

supply [(V*I)].

-- Total output power exceeding user-specified limits (defaults to mainframe power supply maximum) causes the monitor to generate a warning on the display, set a status bit, the Power Supply LED flashes, and the beeper sounds (if enabled).

– Backplane Activity Monitor monitors activity on the VXI

backplane.

-- The DS0 and DS1 backplane lines are monitored. Activity is displayed through the front panel Activity LED. No warning is associated with this activity.

-- SYSFAIL is also monitored. Assertion of SYSFAIL (by any VXI module) is shown by the amber SYSFAIL LED on. It will not sound the beeper or generate a warning on the display.

– Fan Monitor monitors the operation of the fans.

-- Fan speeds outside a fixed range generate a warning on the display, sets a status bit, the FAN LED flashes, and the beeper sounds (if enabled).

-- Fan level is returned as a percentage (%) of maximum speed.

– Fan Controller adjusts mainframe fan speed based on the power

supply, ambient, and individual slot temperatures. The fan can be set to maximum or FULL speed by a front panel switch.

-- In the Variable mode, if the power supply temperature exceeds an expected level, the fan speed increases to maximum.

-- In the Variable mode, if the ambient temperature exceeds

°C, the fan speed increases to maximum.

+50

30 Keysight E8402A, E8404A C-Size Mainframes User and Service Guide

Using the Enhanced Monitor Using the Enhanced Monitor

-- In the Variable mode, if any VXI module exhaust temperature approaches a user-defined limit, fan speed increases.

-- Otherwise, fan speeds operate at the lowest possible speed to maintain user-specified cooling level.

– Time Monitor records:

-- Total hours of operation

-- Time-on since power on, last test, last calibration, last history reset.

-- Time remaining until the next maintenance. This time can be set and queried by the user. A warning is generated when the timer reaches 0. Note: this is disabled as shipped from Keysight.

Using the Display

The Enhanced Monitor display graphically portrays status information about the mainframe. This includes strip charts and histograms of fan speed, slot and ambient temperature, and power supply voltage, and power.

The first time the mainframe is powered on, the display prompts you to select a language; either English, German (Deutsch), French (Français), or Spanish (Español). Use the arrow keys just to the right of the display to highlight a language then press the

Enter key. All

display and help screens will appear in the selected language.

Use the up/down arrow keys to highlight a display item, then press the

Enter key to select that item. In the upper right hand corner of all

displays (except the language selection display) is an arrow; selecting this arrow and pressing the display. Some displays also have a question mark (

Enter key moves you back to the previous

?) in the upper

right corner. Selecting the question mark brings up a help screen describing the display. Figure 2 shows three typical displays and a help screen.

Keysight E8402A, E8404A C-Size Mainframes User and Service Guide 31

Using the Enhanced Monitor Using the Enhanced Monitor

Use the UP/DOWN arrow keys to highlight a menu item (in this case "Power Supply" is highlighted). Press the Enter key to select it.

Use the UP/DOWN arrow keys to highlight a menu item (in this case "Voltage" is highlighted). Press the Enter key to select it.

This display shows the actual measured power supply voltages. Use the UP/DOWN arrow keys to highlight either the arrow or the Question Mark. Highlight the Question Mark and press the Enter key for a display description.

Press the Enter Key to return to the previous display.

Figure 2-2 Typical Displays for the Keysight E8402A and E8404A Enhanced Monitor

Menu Map

Figure 3 shows a complete display menu map for the Enhanced Monitor.

32 Keysight E8402A, E8404A C-Size Mainframes User and Service Guide

Using the Enhanced Monitor Using the Enhanced Monitor

Power Supply

Volta ge L imits Current Stripch art Power Histogr am

+5V: 5.0V -24V: -24.0V +12V: 12.0V -5.2V : -5.1V

-12V: - 12.0V -2V: -2. 0V +24V: 24.0V 5VStd by: 0.0V

+5V: 10.9A -24V : -1.2A +12V: 1.8A -5.2V: -6.2A

-12V: -0.9A -2V: - 2.3A +24V: 1.3A

+5V: 54W -24V: 29W +12V: 21W -5.2V: 32W

-12V: 10W -2V: 5W +24V: 30W Total: 182W

+5V: 460W -24V: 360W +12V: 180W -5.2V: 312W

-12V: 180W -2V: 60W +24V: 360W Total: 1000W

Power Supply Strip Chart

+5V +24 V -2V Total +12V -24V 5VStdby

-12V -5.2V PS Temp

Power Supply Histogram

+5V +24 V -2V Total +12V -24V 5VStdby

-12V -5.2V PS Temp

MPSupply

PSVoltage

PSCurrent

PSPower

PSLimit

MPSStripchar

MPSHistogram

PSSTripchar[1..10]

PSHistogra[1..10]

Temperature

Status Histogram Limits Stri pchart

°C R M

Amb

slot 0 1 2 3 4 5 6 7 8 9 10 11 12

Temperature Stripchart

Slot 0 Slot 3 Sl ot 6 Slot 9 Slot 12 Slot 1 Slot 4 Slot 7 Slot 10 Amb Slot 2 Slot 5 Slot 8 Slot 11

MTEMperature

TSTa tus

TLIM its

MTSTripchart

THIStogram[0..13]

TSTRipchart[0..13]

Tempe rature Histog ram

Slot 0 Slot 3 Sl ot 6 Slot 9 Slot 12 Slot 1 Slot 4 Slot 7 Slot 10 Amb Slot 2 Slot 5 Slot 8 Slot 11

MTHistogram

Fans

Status Stripch art Histogr am

Present Level of Fans: 65% Main Fan Speed: 1498 RPM Power Supply Fan Speed: 2214 RPM Power Supply Fan2 Speed: 2056RP M

MBLower

BSTatus

BSTripchart

BIHistogram

Select a Language

English Francai s Deuts ch Espanol

Mainfra me Stat us

Power S upply System Temperat ure Display Fans History

LANGua ge

MMAin

Note:

the names under each display refer to the parameter for the DISPlay:WINDow command. Refer to the DISPlay:WINDow command for additional information.

Figure 2-3 Keysight E8402 & E8404 Enhanced Monitor Display Menu Map

Keysight E8402A, E8404A C-Size Mainframes User and Service Guide 33

Using the Enhanced Monitor Using the Enhanced Monitor

System

Log RS-232 Timer VXIBus Beeper About

Hours since Power-On: 13 Cumulative Hours On: 16 Hours since last Cal: 16 Number of time s powere d on: 16

Maintenance Timer

Timer Interval Hours: Disabled Hours Remaining: Disabled

Beeper State

Use Up/Down keys to change state

Beeper = On

Baud: 9600 Parity: None Bits: 8 Pace: XON Stop Bits: 1 Echo: On RTS: Off

MSYStem

SLOG

STIMer

SBEeper

SRS232

VXI Message Based Servant

Interrupt Line: 1 Logical Address: 224

HP E8404A Revision A.01.0 0 1000W AC Supply Serial Number: 0 Name: not set

Event Hour

Mainframe Powered Off 413 Temperature Alarm, Slot 3 250 Fan Alarm, Impeller 250

HQUEue

Display

Screen Saver Contrast

Screen Saver

Turns Display off after 10 minutes

Use Up/Down keys to change state.

Screen Saver = Off

Displ ay Cont rast

Use t he Up/Down keys to adj ust contrast, then press Enter.

MDISplay

DSSaver

DCONtrast

SVXI

SABout

Figure 2-4 Keysight E8402 & E8404 Enhanced Monitor Display Menu Map (continued)

34 Keysight E8402A, E8404A C-Size Mainframes User and Service Guide

Enhanced Monitor Fan Control Using the Enhanced Monitor

Enhanced Monitor Fan Control

With the front panel fan switch in the VAR position, the Enhanced monitor controls the fan speed based on slot temperature limits you specify. With the fan switch in the FULL position, the fan operates at full speed.

Essentially, the Enhanced Monitor’s fan control has two contrasting functions: 1) keep the VXI modules installed in the cardcage cool and

2) operate as quietly as possible. These are somewhat conflicting goals because to operate at its quietest, the fan would have to be off and hence not keep the modules cool. Alternately, at its coolest, the fans would have to be full on and the airflow is not quiet. Therefore, the fan control algorithm is to keep the mainframe as quiet as possible while cooling the VXI modules adequately.

What is adequate cooling? You specify it through your selection of slot temperatures. For example, if you specify slot 7 temperature to be maintained within 15 °C of the ambient temperature, the fan controller adjusts fan speed until the cooling air coming off slot 7 is just under 15 °C above ambient. And it will keep it there, adjusting the fan speed as needed to maintain that temperature rise no matter what the ambient temperature might do. That way, the fan noise is at its lowest while maintaining appropriate cooling.

Each slot is monitored and compared to the specified slot temperature limits every two seconds. The slot closest to its limit is allowed to approach the limit in order to keep the fan speed as low as possible.

If you want a cooler mainframe, lower the slot temperature limits. If you want a quieter mainframe, raise the temperature limits. Just remember that the Enhanced Monitor Fan Controller is very accurate; if you specified 30 °C rise above ambient, the controller will maintain a limit just below 30 °C.

There is one exception. The power supply cooling overrides all other cooling requirements. For example, you may specify a 30 °C limit for all slots, but as you monitor the slot temperatures you notice that no slot is approaching the limit. It is likely that the Enhanced Monitor is working to keep the power supply adequately cooled. Power supply cooling requirements are primarily driven by the load placed on the power supply. It needs more cooling if it is significantly loaded. So, if the fan controller stops dropping the fan speed even though the slot temperatures are not close to the specified limits, it is probably because the power supply cooling requirements are dominating.

Software Control of Fan Speed

The SYSTem:BLOWer:STATe command can change the state of the fans from VARiable to FULL at any time. When software control has set the fans to FULL, the front panel fan switch can be set to variable

Keysight E8402A, E8404A C-Size Mainframes User and Service Guide 35

Using the Enhanced Monitor Enhanced Monitor Fan Control

and the fans will remain at FULL. Software control can not put a mainframe with its switch set to FULL into a variable fan state. FULL means that the fans will run at full speed no matter what the conditions in the mainframe. VARiable means that the enhanced monitor sets the fan speed based on the temperature conditions in the mainframe and the temperature limits set by the user.

36 Keysight E8402A, E8404A C-Size Mainframes User and Service Guide

Setting Enhanced Monitor Limits Using the Enhanced Monitor

Setting Enhanced Monitor Limits

The Keysight E840x Enhanced Monitor has several limits that affect when it will issue warnings. Each limit should be selected based on the VXI modules installed in the mainframe.

Temperature Limits

The Enhanced Monitor monitors two types of temperature limits. First are the "Delta slot temperature limits" whose primary function is to pass your specified temperature limits to the Fan Controller (refer to “Enhanced Monitor Fan Control” on page 35). If these limits are not maintained, a warning is issued. The default value is 15 °C rise above ambient; this is a compromise between cooling and noise. Check the specifications of your installed VXI modules to determine sensitivity to temperature variation. You may need to specify a smaller delta slot temperature for some modules.

Second are the absolute temperature limits, for both individual slots and the ambient temperature. These guard the top end of the acceptable temperature spectrum and generate warnings if exceeded. The default values are generally acceptable to most VXI modules; but you should verify the temperature ratings for all VXI modules installed in the mainframe and set the slot’s absolute temperature limit accordingly. For example, many modules are specified for a temperature range of 0 to 55 °C and assume a 10 °C rise to occur in operation. Therefore, their absolute temperature is safely 65 °C (the default). But, if a VXI module is only rated to 45 °C (and assumes a 10 °C rise) then its slot should have an absolute temperature limit of 55 °C. You might set the limit lower for earlier warning.

Use the limits, both ambient and delta slot temperatures. Use the

STATus:QUESTionable:TEMPerature:LEVEL? to determine the actual threshold

when an over-temperature warning will sound.

STATus:QUEStionable:TEMPerature:LIMit? command to set temperature

Current and Power Limits

By default, the Enhanced Monitor provides power supply current and power limit warnings only when the power supply is exceeding its capacity. But it is unlikely that all seven supplies will be used at maximum capacity. Consequently, this warning is generally too late for most applications. For example, the +5V supply in the Keysight E8404 is capable of providing up to 90A (peak current, refer to Appendix A). It is therefore capable of delivering the regulated voltage into nearly a dead short -- 0.06. For this reason, you should specify current and power limits to reflect the actual needs of the VXI modules installed in the mainframe. Then a warning is generated in sufficient time to correct a problem.

Keysight E8402A, E8404A C-Size Mainframes User and Service Guide 37

Using the Enhanced Monitor Setting Enhanced Monitor Limits

To set current limits, calculate the worst case current needed on each supply for your application, add 10%, and set your current limit to this value. Alternately, allow your system to operate normally for a time, query the maximum values measured by the Enhanced Monitor’s history subsystem, and set the current limit to a comfortable margin above this maximum. Do this for each of the seven VXI supplies and for the total power value. In this way, the Enhanced Monitor can issue a warning when a module begins using more power than normal. Use the

STATus:QUEStionable:CURRent:LIMit command (page 131) to set current limits,

and STAT:QUES:POW:LIM to set the total power limit.

Handling Warnings

With the limits set, the mainframe will beep if a limit is exceeded. However, you need to include exception procedures in your computer program so that the program can handle the warnings. To do this, you need to enable the Enhanced Monitor’s Status Subsystem to interrupt the computer when a warning occurs. Refer to Chapter 3, “Example 2: Setting up the Mainframe” on page 51, for a program example demonstrating this procedure.

Save The Limits

Once you have specified temperature and voltage/power limits for your mainframe, remember to save the limits in non-volatile memory. Otherwise, you will start again after a mainframe power-down or reset. Use the command to save the values in non-volatile memory.

SYSTem:NVSave

38 Keysight E8402A, E8404A C-Size Mainframes User and Service Guide

Enhanced Monitor Measurement Cycles Using the Enhanced Monitor

Enhanced Monitor Measurement Cycles

The Keysight E8402 and E8404 Enhanced Monitor monitors over 80 signals throughout the mainframe every two seconds. These measurements are fed to the display, the Status Subsystem (for warnings), the History Subsystem (for storage), and the Fan Controller. The display shows the measurements pertinent to the screen displayed, updated every two seconds. The Status Subsystem sets status bits in the condition registers, updated every two seconds. The History Subsystem calculates minimums, maximums, and histogram values, updated every two seconds. However, the Enhanced Monitor stores its measurements in the Trace Subsystem only once every 10 seconds.

During the measurement cycle, the Measuring bit in the Operational Status Condition Register is set and then cleared. This allows you to synchronize with the measuring cycle if you want to.

Keysight E8402A, E8404A C-Size Mainframes User and Service Guide 39

Using the Enhanced Monitor Using the History Queue

Using the History Queue

The Keysight E840x Enhanced Monitor provides many history feature records such as: minimum and maximum values, histograms, operating times, and event logs. As you begin to use the mainframe, the history features won’t be of much use -- very little has happened, there is no history to record. But as time passes, the history features can provide valuable insights into the trends of your test system. Then, when you encounter a problem in your tests system, you have a record of events to evaluate:

– What type of environment has the module experienced? – What events led up to the failure? – What changes from one test system to another?

Over time, familiarity with the problems of one particular test system may lead to predictive knowledge about the system. Then, by watching those predictive events using the history feature, you can prevent problems.

HISTory Queue

One of the history features is history queue – a list of events that occurred in the mainframe. History events are recorded with the operating time that the event took place (the operating time is the number of seconds since the mainframe was manufactured). The history queue is available through the display; operating time is displayed in hours. Operating Events are shown with the most recent displayed first, earliest events displayed last. Figure 5 shows an example history display.

To access the history queue, select execute the command: up and down the list (Up/Down arrows appear in the display only when additional data is available) four events at a time.

Figure 2-5 Example History Queue Display

History from the Mainframe Status display or

DISP:WIND HQU. Use the Up/Down arrow keys to page

Down arrow indicates more data is available. Use Up/Down keys to scroll through display.

40 Keysight E8402A, E8404A C-Size Mainframes User and Service Guide

RS-232 Programming Using the Enhanced Monitor

RS-232 Programming

The RS-232 port on the Enhanced Monitor is primarily a debug port, designed for use with a dumb terminal or terminal emulator program on a PC. This allows you to execute SCPI commands directly without an application program and to monitor any errors in the error queue (including those generated through the VXI interface programming). It also allows you to query the Enhanced Monitor while the mainframe is in standby if an external +5VDC is applied to the 5V EXT terminals. The RS-232 port is the only possible source for temperature calibration since the mainframe must be empty for temperature calibration.

Windows 95 Terminal or HyperTeminal. These applets provide a convenient method of using the Enhanced Monitor. Use an appropriate nine-pin female to nine-pin female RS-232 cable (such as the Keysight 24542U) for connection between the PC and the Enhanced Monitor. Configure the Terminal settings for generic TTY, and the communication settings to match those of the Enhanced Monitor.

Default RS-232 parameters are:

and Windows NT® provide a terminal emulator program called

– Baud: 9600 – Bits: 8 – Parity: None – Stop bits: 1 – DTR/RTS: On – Pace: XON – Echo: On – ERES: On – Line buffer: On

Refer to Chapter 3 for RS-232 programming information. The

SYSTem:COMMunicate:SERial ... commands set and/or modify the configuration

of the Enhanced Monitor's serial interface. Serial communication commands take effect after the end of the program message containing the command(s).

If you use the Enhanced Monitor RS-232 port (located on the back of the mainframe) while the mainframe is in the standby mode, you must supply an external +5Vdc to the +5VEXT connector (located near the RS-232 port). If you use the RS-232 port while the mainframe is powered on, you do not need to provide the external +5Vdc.

Keysight E8402A, E8404A C-Size Mainframes User and Service Guide 41

Using the Enhanced Monitor RS-232 Programming

The Enhanced Monitor also provides several short cuts, primarily for terminal use:

Backspace In TERMinal mode, a backspace means "back-up." It becomes a

space in RAW mode.

Ctrl-R In TERMinal mode, this provides a "recall last command string" feature.

It is ignored in RAW mode

Ctrl-T In either TERMinal or RAW mode, Ctrl-T performs a

SYSTem:COMMunication:PRESet:TERMinal command. This puts the Enhanced Monitor into its terminal mode at whatever baud rate presently set.

Ctrl-C In either TERMinal or RAW mode, Ctrl-C performs the equivalent of a

Device Clear. It can interrupt a command that is taking too long to execute and makes it possible to reset the Enhanced Monitor (*RST).

Be sure to turn off the Terminal applet’s use of the control keys for Windows use if you want to use these short cuts.

The RS-232 port can be used to program the Enhanced Monitor. Be careful when programming this way though. Remember that you have to turn off terminal features like echo and immediate error. Do not try to use both the VXI programming interface and the RS-232 port at the same time. They both access the same error queue and status registers.

You should avoid changing RS-232 port parameters through the RS-232 port. It will work but you must be careful otherwise you may lose communications. Intersperse your commands with queries. This will help you stay synchronized with the port. If you reattach a terminal after using a computer and see no character echo, Ctrl-T should return the port to terminal mode.

42 Keysight E8402A, E8404A C-Size Mainframes User and Service Guide

Diagnostic Connector Using the Enhanced Monitor









































Diagnostic Connector

The 25-pin Sub-D diagnostic connector provides access to backplane voltages, power supply and backplane temperatures, and output signals. The pins are described in Table 2-1.

Table 2-1 Diagnostic Connector Pin Descriptions

Pin # Function Description

1 +5 VM +5V backplane voltage monitor (high impedance). (+4.875 Vdc to +5.125 Vdc)

2 -12 VM -12V backplane voltage monitor (high impedance). (-12.6 Vdc to -11.64 Vdc)

3 -24 VM -24V backplane voltage monitor (high impedance). (-25.2 Vdc to -23.28 Vdc)

4 -2 VM -2V backplane voltage monitor (high impedance). (-2.1 Vdc to -1.9 Vdc)

5 Rem On Remote power on. See “Using the Remote Power-on Pins.”

6 +5 VC +5 VDC source output (1A maximum).

7 +12 VC +12 VDC source output (1A maximum).

8 +5 V Stdby Input for +5V STDBY (1A maximum for pins 8 and 21 combined).

9 GND Chassis ground.

10 SysReset * TTL low-true input signal causes system reset, output indicates system reset.

NOTE: If you use this pin you must not violate VXI specifications.

11 PS Temp Output voltage proportional to power supply temperature (0 VDC at 0 °C, with a rise of

10 mV per degree centigrade).

12 Ref Temp Output voltage proportional to backplane temperature (0 VDC at 0 °C, with a rise of 10 mV per

degree centigrade). A function of the ambient temperature and load. At no load, T T

~ 14 °C + ambient. At full load and low fan speed, T

ref

13 Fans OK * TTL low-true output voltage indicates power supply and backplane cooling fans are operating.

14 +12 VM +12V backplane voltage monitor (high impedance). (+11.64 Vdc to +12.6 Vdc)

15 +24 VM +24V backplane voltage monitor (high impedance). (+23.28 Vdc to +25.2 Vdc)

16 -5.2 VM -5.2V backplane voltage monitor (high impedance). (-5.46 Vdc to -5.044 Vdc)

17 GND Chassis ground.

18 REM Rtn Remote power switch return. See “Using the Remote Power-On Pins.”.

19 V OK * TTL low-true output voltage indicating the +5V, ± 12V, ± 24V, -5.2V, and -2V power supply

voltages are within ± 8% of its allowed variation.

20 GND Chassis ground.

21 +5 V Stdby Input for +5V STDBY (1A maximum for pins 8 and 21 combined).

22 GND Chassis ground.

23 ACFAIL* TTL low-true output asserted by the mainframe power monitor at power down or whenever a

loss of power is detected.

24 GND Chassis ground.

25 RSV

Reserved. Used for Timer Verification; refer to Chapter 4.

~ 2 °C + ambient. At full load and high fan speed,

ref

~ 20 °C + ambient.

Keysight E8402A, E8404A C-Size Mainframes User and Service Guide 43

Using the Enhanced Monitor Diagnostic Connector

+5VC (pin 6)

The +5 volt output allows you to power external TTL circuits if required. The maximum current allowed from this supply is 1.0A

+12VC (pin 7)

The +12 volt output allows you to power external circuits, charge a battery, or power relays if required. The maximum current allowed from this supply is 1.0A

+5V STDBY (pins 8, 21)

This provides an input to the mainframe backplane for a +5V DC standby power source. This may be from a separate battery or power supply. The maximum current allowed is 1A total (pins 8 and 21 wired in parallel). It can be used to power timers and other circuits when the mainframe is in standby mode.

SYSRESET* (pin 10)

This pin provides an extension of the VXI backplane SYSRESET* signal line. It can be used to monitor for SYSRESET* or to send a SYSRESET* tot he backplane. Shorting this line to ground asserts the SYSRESET* signal to the system. If you use an extension cable from the Diagnostic Connector, make certain that you do not violate the VXI backplane electrical specifications (i.e. keep the cable as short as possible, buffer the signal line, etc.).

ACFAIL* (pin 23)

This pin lets you monitor the ACFAIL* signal from the VXI backplane. If you use an extension cable from the Diagnostic Connector, make certain that you do not violate the VXI backplane electrical specifications (i.e. keep the cable as short as possible, buffer the signal line, etc.).

44 Keysight E8402A, E8404A C-Size Mainframes User and Service Guide

Keysight E8402A, E8404A C-Size Mainframes User and Service Guide

3 Programming the Enhanced

Monitor

This chapter explains how to program the enhanced monitor of the Keysight E8402A and E8404A VXI mainframes including:

– Complete C language program examples – Complete SCPI Command Reference – Complete IEEE 488.2 Common Command Reference

Understanding SCPI Commands

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? *TST?

SCPI Command Format

The SCPI commands perform functions like setting parameters, 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:

:DISPlay [:WINDow] <display window> [:WINDow]?

:TEXT [:DATA] <string> [:DATA]?

:DISPlay is the root command, [:WINDow] is a second-level command with parameter.

Programming the Enhanced Monitor Understanding SCPI Commands

Command Separator

A colon (:) always separates one command from the next lower-level command as shown in the example subsystem above.

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 DISPlay, then DISP and DISPLAY are both acceptable forms. Other forms of DISPlay, such as DISPL or DISPLY will generate an error. You may use upper- or lowercase letters. Therefore, DISPLAY, display, and DiSpLaY 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 example subsystem above. The second level command [:WINDow] is an implied command (indicated by square brackets []). You can use either form:

:DISPlay:WINDow <display window> or :DISPlay <display window>

46 Keysight E8402A, E8404A C-Size Mainframes User and Service Guide

Understanding SCPI Commands Programming the Enhanced Monitor

Parameters

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

Parameter Type Explanations and Examples

Enumerated (abbreviated enum in the Parameter tables)

Numeric Accepts all commonly used decimal representations of numbers including

int16 or uint32 int16 means a signed 16-bit integer value;

float floating point number

Boolean Represents a single binary condition that is either true or false.

Accepts a specified set of words as the parameter.

For example, the <display window> parameter of the :DISPlay:WINDow command accepts: MMAin, MPSupply, MTEMperature, MBLower, MDISplay, MSYStem . . .

optional signs, decimal points, and scientific notation.

123, 123E2, -123, -1.23E2, .123, 1.23E-2, 1.23000E-01. Special cases include MIN, MAX, and DEF.

uint32 means an unsigned 32-bit integer value.

ON, OFF, 1, 0.

Optional Parameter: 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.

Parameters separated by a vertical bar (|) indicate the only possible choices. For example:

SYSTem:COMMunicate:SERial:CONTrol:RTS ON|OFF

the ON|OFF means that you can set RTS to either ON or OFF.

Linking Commands

Linking IEEE 488.2 Common Commands with SCPI Commands. Use a semicolon (;) between the commands. For example:

*RST;SYSTem:VERSion? or SYSTem:VERSion?;*RST

Linking Multiple SCPI Commands. Use both a semicolon (;)and a colon (:) between the commands. For example:

SYST:COMM:SER:BAUD 19200;:SYST:COMM:SER:BITS 8

Keysight E8402A, E8404A C-Size Mainframes User and Service Guide 47

Programming the Enhanced Monitor Programming Examples

Programming Examples

This section contains SCPI program examples that demonstrate how to read history data from the enhanced monitor, perform the self test, set and verify limit warnings. The program examples are written in ANSI C language with Keysight VISA extensions. To run one of these programs you must have the Keysight SICL Library, the Keysight VISA library, an Keysight-IB interface module installed in an external PC, an Keysight E1406 Command Module, and the enhanced monitor in either the Keysight E8402A or E8404A VXI mainframe.

The following program examples are developed with the ANSI C language using the Keysight VISA extensions. The program was written and tested in Microsoft Visual C++

A more complete Enhanced Monitor setup example is provided on the Keysight Universal Instrument Drivers CD ROM in the directories:

but can be compiled under any standard ANSI C compiler.

\examples\Keysighte8402

\examples\Keysighte8404

48 Keysight E8402A, E8404A C-Size Mainframes User and Service Guide

Programming Examples Programming the Enhanced Monitor

Example 1: Self Test & Verification

The following example program resets the Enhanced Monitor, performs a complete self test (this can take up to seven minutes to complete), read the mainframe model number string, read the mainframe serial number, and writes data to the Enhanced Monitor display.

#include <visa.h>

#include <stdio.h>

#include <stdlib.h>

/* Interface address is 9, Enhanced Monitor secondary address is 224*/

/* #define INSTR_ADDR “GPIB0::9::224::INSTR” */

#define INSTR_ADDR “GPIB-VXI0::224::INSTR”

/* a simple VISA error-handling macro. This version prints the line number from which it was called and exits if it gets an error */

#define CHECKERR(errStatus, line) if (errStatus < VI_SUCCESS) { \

printf(“Line %d: error %x returned from visa. Aborting\n”, \

line, errStatus); \

exit (errStatus); \

}

int main()

{

ViStatus errStatus;

/*Status from each VISA call */

ViSession viRM;

/*Resource mgr. session */

ViSession en_mon;

/* Enhanced Monitor session */

int into;

/* variable for *OPC? */

char id_string[256];

/* Model Number string */

char ser_num[256]

/* mainframe serial number */

chr txt_string[256]

/* String sent to display */

char selftst_string[256];

/* Self-test string */

/* Open the default resource manager */

errStatus = viOpenDefaultRM (&viRM);

CHECKERR(errStatus, __LINE__);

Keysight E8402A, E8404A C-Size Mainframes User and Service Guide 49

Programming the Enhanced Monitor Programming Examples

/* Open the Enhanced Monitor instrument session */

errStatus = viOpen(viRM,INSTR_ADDR,VI_NULL,VI_NULL,&en_mon);

CHECKERR(errStatus, __LINE__);

/* Reset the Enhanced Monitor */

errStatus = viQueryf(en_mon, “*RST;*OPC?\n”,”%i”,&into);

CHECKERR(errStatus, __LINE__);

/* Set Timeout Value to 8 minutes for Self Test */

viSetAttribute (en_monA,VI_ATTR_TMO_VALUE,480000);

/* Perform Enhanced Monitor Self-Test - approx. 7 minutes */

errStatus = viQueryf(en_mon, “TEST:ALL?\n”, “%t”, selftst_string);

CHECKERR(errStatus, __LINE__);

printf(“Self Test Result is %s\n”, selftst_string);

/* Query the mainframe model */

errStatus = viQueryf(en_mon, “SYSTEM:MODEL?\n”, “%t”, id_string);

CHECKERR(errStatus, __LINE__);

printf(“ID is %s\n”, id_string);

/* Query the mainframe serial number*/

errStatus = viQueryf(en_mon, “SYSTEM:SNUMBER?\n”, “%t”, ser_num);

CHECKERR(errStatus, __LINE__);

printf(“Serial Number is: %s\n”, ser_num);

/* Write a Message to the Enhanced Monitor Display */

errStatus = viPrintf(en_mon,”DISP:TEXT %s \n”,“\\n Hello World!”);

CHECKERR(errStatus, __LINE__);

/* Close the Enhanced Monitor Instrument Session */

errStatus = viClose (en_mon);

CHECKERR(errStatus, __LINE__);

/* Close the Resource Manager Session */

errStatus = viClose (viRM);

CHECKERR(errStatus, __LINE__);

return VI_SUCCESS;

}

50 Keysight E8402A, E8404A C-Size Mainframes User and Service Guide

Programming Examples Programming the Enhanced Monitor

Example 2: Setting up the Mainframe

The following example program demonstrates how to customize the mainframe’s Enhanced Monitor features. Specifically, it enables the status subsystem, sets temperature limits for a specific slot in the mainframe and verifies the limit. To simulate a limit warning, you can set the limit to a value lower than ambient temperature.

#include <visa.h>

#include <stdio.h>

#include <stdlib.h>

/* Interface address is 9, Enhanced Monitor default secondary address is 224 */

/* #define INSTR_ADDR “GPIB0::9::224::INSTR” */

#define INSTR_ADDR “GPIB-VXI0::224::INSTR”

/* Enable STAT:OPER bits for Calibrating, Measuring, History Queue Full */

#define OPER_ENAB (ViUInt16)0x0411

/* Enable STAT:QUES bits for Voltage Summary, Current Summary, Power, Temperature summary, Calibration, Blower summary, UMCounter, Unexpected parameter */

#define QUES_ENAB (ViUInt16)0x471B

/* Set absolute temperature limit TEMP_LIM (45

6)*/

#define LIM_SLOT “OUT6”

#define TEMP_LIM (ViInt16)45

/* a simple VISA error-handling macro. This version prints the line number from which it was called and exits if it gets an error */

#define CHECKERR(errStatus, line) if (errStatus < VI_SUCCESS) { \

printf(“Line %d: error %x returned from visa. Aborting\n”, \

line, errStatus); \

exit (errStatus); \

}

int main()

{

ViStatus errStatus;

/* Status from each VISA call */

ViSession viRM;

/* Resource mgr. session */

ViSession en_mon;

/* Enhanced Monitor session */

ViUInt16 echoed_limit;

/* For verification of programmed temp limit */

°C) for slot LIM_SLOT (slot

Keysight E8402A, E8404A C-Size Mainframes User and Service Guide 51

Programming the Enhanced Monitor Programming Examples

/* Open the default resource manager */

errStatus = viOpenDefaultRM(&viRM);

CHECKERR(errStatus, __LINE__);

/* Open the Enhanced Monitor instrument session */

errStatus = viOpen(viRM, INSTR_ADDR, VI_NULL, VI_NULL, &en_mon);

CHECKERR(errStatus, __LINE__);

/* Reset the Enhanced Monitor */

errStatus = viPrintf(en_mon, “*RST\n”);

CHECKERR(errStatus, __LINE__);

/* Clear status of the Enhanced Monitor */

errStatus = viPrintf(en_mon, “*CLS\n”);

CHECKERR(errStatus, __LINE__);

/* Enable STAT subsystem */

errStatus = viPrintf(en_mon, “STAT:OPER:ENAB %hd\n”, OPER_ENAB);

CHECKERR(errStatus, __LINE__);

errStatus = viPrintf(en_mon, “STAT:QUES:ENAB %hd\n”, QUES_ENAB);

CHECKERR(errStatus, __LINE__);

/* Program a temperature limit for a selected slot */

errStatus = viPrintf(en_mon, “STAT:QUES:TEMP:LIM %s,%hd\n”, LIM_SLOT,

TEMP_LIM);

CHECKERR(errStatus, __LINE__);

/* Verify the temperature limit setting */

errStatus = viQueryf(en_mon, “STAT:QUES:TEMP:LIM? %s\n”, “%hd”,

LIM_SLOT,&echoed_limit);

CHECKERR(errStatus, __LINE__);

printf(“Temperature limit for slot %s is now %hd\n”, LIM_SLOT,echoed_limit);

if (TEMP_LIM != echoed_limit)

printf(“ERROR: requested %d deg limit for slot %s, actual: %hd deg\n”,

TEMP_LIM, LIM_SLOT, echoed_limit);

/* If you wish to save your new settings in non-volatile RAM (NVRAM), uncomment the following 2 lines of code */

errStatus = viPrintf(en_mon, “SYST:NVS\n”);

CHECKERR(errStatus, __LINE__);

52 Keysight E8402A, E8404A C-Size Mainframes User and Service Guide

Programming Examples Programming the Enhanced Monitor

/* Close the Enhanced Monitor instrument session */

errStatus = viClose(en_mon);

CHECKERR(errStatus, __LINE__);

/* Close the resource manager session */

errStatus = viClose(viRM);

CHECKERR(errStatus, __LINE__);

return VI_SUCCESS;

}

Keysight E8402A, E8404A C-Size Mainframes User and Service Guide 53

Programming the Enhanced Monitor Programming Examples

Example 3: Set-up the RS-232

The following example program demonstrates how to set-up the RS-232 Port on the Enhanced Monitor. In this setup, the Enhanced Monitor is set to its default values which are suitable for use with a dumb terminal. The baud rate is changed to 19200 baud.

#include <visa.h>

#include <stdio.h>

#include <stdlib.h>

/* Interface address is 9, Enhanced Monitor secondary address is 224*/

/* #define INSTR_ADDR “GPIB0::9::224::INSTR” */

#define INSTR_ADDR “GPIB-VXI0::224::INSTR”

/* a simple VISA error-handling macro. This version prints the line number from which it was called and exits if it gets an error */

#define CHECKERR(errStatus, line) if (errStatus < VI_SUCCESS) { \

int main()

{

/*Status from each VISA call*/

/*Resource mgr. session */

/* Enhanced Monitor session */

/* Open the default resource manager */

CHECKERR(errStatus, __LINE__);

printf(“Line %d: error %x returned from visa. Aborting\n”, \

line, errStatus); \

exit (errStatus); \

}

ViStatus errStatus;

ViSession viRM;

ViSession en_mon;

errStatus = viOpenDefaultRM (&viRM);

/* Open the Enhanced Monitor instrument session */

errStatus = viOpen(viRM,INSTR_ADDR,VI_NULL,VI_NULL,&en_mon);

54 Keysight E8402A, E8404A C-Size Mainframes User and Service Guide

Programming Examples Programming the Enhanced Monitor

CHECKERR(errStatus, __LINE__);

/* Reset the Enhanced Monitor */

errStatus = viPrintf(en_mon, “*RST\n”);

CHECKERR(errStatus, __LINE__);

/* Set Serial Port Parametersfor use with dumb terminal */

errStatus = viPrintf(en_mon, “SYST:COMM:SER:PRES:TERM”);

CHECKERR(errStatus, __LINE__);

/* For use with a computer (PC), execute the following lines of code */

/*errStatus = viPrintf(en_mon, “SYST:COMM:SER:PRES:RAW”);

CHECKERR(errStatus, __LINE__);

/* Set Baud Rate to 19200 */

errStatus = viPrintf(en_mon, “SYST:COMM:SER:BAUD 19200“);

CHECKERR(errStatus, __LINE__);

/* Close the Enhanced Monitor Instrument Session */

errStatus = viClose (en_mon);

CHECKERR(errStatus, __LINE__);

/* Close the Resource Manager Session */

errStatus = viClose (viRM);

CHECKERR(errStatus, __LINE__);

return VI_SUCCESS;

}

Keysight E8402A, E8404A C-Size Mainframes User and Service Guide 55

Programming the Enhanced Monitor Programming Examples

Example 4: Reading Current Status Information

The following example program reads the current status of the VXI mainframe and reads trace data or histogram data from slot 5 of the VXI mainframe.

#include <visa.h>

#include <stdio.h>

#include <stdlib.h>

/* Interface address is 9, Enhanced Monitor secondary address is 224 */

/* #define INSTR_ADDR “GPIB0::9::224::INSTR” */

#define INSTR_ADDR “GPIB-VXI0::224::INSTR”

/* a simple VISA error-handling macro. This version prints the line number from which it was called and exits if it gets an error */

#define CHECKERR(errStatus, line) if (errStatus < VI_SUCCESS) { \

printf(“Line %d: error %x returned from visa. Abort!\n”, line, errStatus); \

exit (errStatus); \

}

int main()

{

ViStatus errStatus;

/* Status from each VISA call */

ViSession viRM;

/* Resource mgr. session */

ViSession en_mon;

/* Enhanced Monitor session */

short tracArray[400];

/* Stores up to 360 points from a TRAC */

char preamble[1024];

/* Receives PREamble textual info */

int siz, i, scaledTimes[360];

float scaledTemps[360];

ViInt16 format, type, points, count;

/* utility variables for PREamble */

float yincrement;

/* utility variables for PREamble */

ViInt16 xincrement, xreference, yorigin, yreference;

/* utility variables for PREamble */

ViInt32 xorigin;

/* utility variable for PREamble */

56 Keysight E8402A, E8404A C-Size Mainframes User and Service Guide

Programming Examples Programming the Enhanced Monitor

int histArray[10]; /* HIST:TEMP:HIST data storage for OUT5 */

int minArray[10], maxArray[10]; /* HISTogram “bucket” boundaries */

/* Open the default resource manager */

errStatus = viOpenDefaultRM(&viRM);

CHECKERR(errStatus, __LINE__);

/* Open the Enhanced Monitor instrument session */

errStatus = viOpen(viRM, INSTR_ADDR, VI_NULL, VI_NULL, &en_mon);

CHECKERR(errStatus, __LINE__);

errStatus = viSetAttribute(en_mon, VI_ATTR_TMO_VALUE, 10000);

/* Reset the Enhanced Monitor */

errStatus = viPrintf(en_mon, “*RST\n”);

CHECKERR(errStatus, __LINE__);

/* Read and Print temperature TRACe data for slot OUTF5 */

/* Compute the number of elements in teh tracArray[] */

siz = sizeof(tracArray) / sizeof(tracArray[0]);

/* siz is initially max data count */

/* Read TRACe raw data for slot 5 Front (OUTF5) into tracArray[] and get the actual data count */

errStatus = viQueryf(en_mon, “TRAC:DATA? OUTF5\n”, “%#hb%*t”,

&siz, tracArray);

/* siz receives actual data count */

CHECKERR(errStatus, __LINE__);

/* Now read the PREamble that describes this trace data. Note that you MUST read the TRAC data immediately prior to reading the PREamble. */

errStatus = viQueryf(en_mon, “TRAC:DATA:PRE? OUTF5\n”, “%t”, preamble);

CHECKERR(errStatus, __LINE__);

printf(“PREamble: %s\n”, preamble); /* For visual reference */

/* Extract the various fields of the PREamble. */

sscanf(preamble, “%hd,%hd,%hd,%hd,%hd,%ld,%hd,%f,%hd,%hd”,

&format, &type, &points, &count, &xincrement, &xorigin,

&xreference, &yincrement, &yorigin, &yreference);

Keysight E8402A, E8404A C-Size Mainframes User and Service Guide 57

Programming the Enhanced Monitor Programming Examples

/* Print scaled Temperature trace data */

if (siz > 0) {

/* we have some trace data */

printf(“Scaled times:temperatures for trace OUTF5\n”);

/* Note that TRAC data for +2 (2 seconds after turn-on) is not valid.

Invalid (unacquired) data in TRAC is set to -1 (-0.1 degree) */

for (i=0; i<siz; i++) {

/* scale it, store it, and display it. */

scaledTimes[i] = ((i-xreference) * xincrement) + xorigin;

scaledTemps[i] = ((tracArray[i]-yreference) * yincrement) + yorigin;

printf(“%5d: %3.1f, “, scaledTimes[i], scaledTemps[i]);

}

/* Read and print temperature HISTogram data for slot OUT5 into histArray[] */

/* Set units of returned data to seconds */

errStatus = viPrintf(en_mon, “HIST:UNIT:TIME SEC\n”);

/* max precision */

CHECKERR(errStatus, __LINE__);

/* Get the array of histogram values */

errStatus = viQueryf(en_mon, “HIST:TEMP:HIST? OUT5\n”, “%,10d”, histArray);

CHECKERR(errStatus, __LINE__);

/* Get the array of histogram “buckets” minima */

errStatus = viQueryf(en_mon, “HIST:TEMP:HIST? OUT5,MIN\n”, “%,10d”,minArray);

CHECKERR(errStatus, __LINE__);

/* Get the array of histogram “buckets” maxima */

errStatus = viQueryf(en_mon, “HIST:TEMP:HIST? OUT5,MAX\n”, “%,10d”,maxArray);

CHECKERR(errStatus, __LINE__);

printf(“\nHISTogram data for 10 temperature ranges of slot OUT5\n”);

for (i=0; i<10; i++)

printf(“%5.1f to %5.1f deg: %d seconds\n”,

0.1*minArray[i], 0.1*maxArray[i] , histArray[i]);

/* Close the Enhanced Monitor instrument session */

58 Keysight E8402A, E8404A C-Size Mainframes User and Service Guide

Programming Examples Programming the Enhanced Monitor

errStatus = viClose(en_mon);

CHECKERR(errStatus, __LINE__);

/* Close the resource manager session */

errStatus = viClose(viRM);

CHECKERR(errStatus, __LINE__);

return VI_SUCCESS;

}

Keysight E8402A, E8404A C-Size Mainframes User and Service Guide 59

Programming the Enhanced Monitor SCPI Command Reference

SCPI Command Reference

The following section describes the SCPI commands for the Keysight E8402A Enhanced Monitor. Commands are listed alphabetically by subsystem and also within each subsystem.

CALibration Subsystem

The CALibration Subsystem is described in detail in Chapter 4 of this manual. Refer to that chapter for complete calibration and performance verification procedures.

Subsystem Syntax

:CALibration [:ALL]? Performs complete monitor calibration. :TEMPerature? Calibrates temperature monitoring :VALue :TEMPerature <value> Sets the calibration temperature. :TEMPerature? Returns the calibration temperature. :VOLTage <supply>,<value> Sets calibration voltage value :VOLTage? <supply> Returns calibration voltage value :VOLTage? <supply> Calibrates voltage monitoring

DISPlay Subsystem

The DISPlay subsystem controls the mainframe’s display.

Subsystem Syntax

:DISPlay [:WINDow] <display window>Sets display data screen to <display window> [:WINDow]? Returns display data screen presently showing :STATe <state> Sets mainframe display state (ON/OFF/AUTO) :STATe? Returns monitor mod state (ON/OFF/AUTO) :TEXT[:DATA] <string> Displays a user-defined message on the display

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DISPlay Subsystem Programming the Enhanced Monitor

DISPlay[:WINDow] <display window> DISPlay[:WINDow]?

DISPlay[:WINDow] <display window> sets the data screen presently showing on

the mainframe’s display to the window described by the <display window> parameter.

DISPlay[:WINDow]? returns a string representing the current display window.

Parameters

Name Type Range Default Description

Keysight E8402A, E8404A C-Size Mainframes User and Service Guide 61

Programming the Enhanced Monitor DISPlay Subsystem

enum MMAin

MPSupply MTEMperature MBLower MDISplay MSYStem MPSStripchar MPSHistogra MTSTripchart MTHistogram PSVoltage PSCurrent PSPower PSLimit PSSTripcha1 -

PSSTripcha10 PSHistogra1 -

PSHistogra10) TSTatus TLIMits TSTRipchar0 -

TSTRipchar13) THIStogram0 -

THIStogram13) BSTatus BSTRipchart BHIStogram DCONtrast DSSaver SBEeper SABout STIMer SLOG SRS232 SVXI HQUeue LANGuage

MMAin top level menu

power supply menu temperature menu fan menu display menu system menu power supply stripchart menu power supply histogram menu temperature stripchart menu temperature histogram menu power supply voltage status power supply current status power supply power status power supply limits power supply stripcharts (refer to

comments) power supply histograms (refer to

comments) temperature status temperature limits temperature stripcharts (refer to

comments) temperature histograms (refer to

comments) blower status mainframe cooling blowers stripchart mainframe cooling blowers histogram display contrast alteration display screen saver state selection system beeper setting system mainframe description system user maintenance counter status system log data system RS-232 settings System VXI Settings History Queue Listing mainframe display language selection

Comments

– The “Keysight E8402 & E8404 Enhanced Monitor Display Menu Map” on

page 33 shows a simplified menu map for the Enhanced Monitor. The keywords below each display box are the <display window> range parameter from the previous table.

62 Keysight E8402A, E8404A C-Size Mainframes User and Service Guide

DISPlay Subsystem Programming the Enhanced Monitor

– For PSSTripchart and PSHistogram, the number suffix (1 - 10) indicates

which power supply is displayed, refer to the following table. PSSTripchart displays Watts vs. Time; PSHistogram displays hours/minutes/seconds vs. Watts.

PSSTripchart, PSHistogram

1 P5 (positive 5 volt supply)

2 P12 (positive 12 volt supply)

3 N12 (negative 12 volt supply)

4 P24 (positive 24 volt supply)

5 N24 (negative 24 volt supply)

6 N5PT2 (negative 5.2 volt supply)

7 N2 (negative 2 volt supply)

8 P5STby (positive 5 volt standby)

9 Power Supply Temperature

10 Total wattage from power supply

Power Supply

– For TSTRipchar and THIStogram, the number suffix (0 - 12) represents the

slot number (the suffix 0 (zero) indicates slot 0, the suffix 1 (one) indicates slot one, etc); the number 13 represents the ambient temperature.

Returned Data

Type Range Description

string The string is the same as that listed in uppercase in the Range

column under Parameters.

Error Conditions

The following table lists the most common error conditions and causes. Error numbers and corresponding messages can be found using query.

Number Message Probable Cause

-109 “Missing Parameter” The <display window> parameter was omitted.

-221 “Settings Conflict” The mainframe’s power is off.

-224 “Illegal Parameter” The <display window> parameter was not correct.

Keysight E8402A, E8404A C-Size Mainframes User and Service Guide 63

SYSTem:ERRor?

Programming the Enhanced Monitor DISPlay Subsystem

Reset Condition

At *RST, DISPlay[:WINDow] is set to MMAin.

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DISPlay Subsystem Programming the Enhanced Monitor

DISPlay[:WINDow]:STATe <state> DISPlay[:WINDow]:STATe?

DISPlay[:WINDow]:STATe sets the state of the mainframe’s display (ON, OFF,

AUTO). mainframe is powered up. places the Display in screen saver mode where the display will turn off when no keys are pressed for 10 minutes.

DISPlay[:WINDow]:STATe? returns the state of mainframe’s display. The returned

data is a string (enumerated); either ON, OFF, or AUTO.

Parameters

Returned Data

ON is the default, and means the display is always on when the

OFF disables the display window and it is dark. AUTO

Name Type Range Default Description

<state> enum. ON,OFF,AUTO ON State of Display

Type Range Description

enum ON,OFF,AUTO State of Display

Error Conditions

The following table lists the most common error conditions and causes. Error numbers and corresponding messages can be found using

SYSTem:ERRor?

query.

Number Message Probable Cause

-109 “Missing Parameter” The <state> parameter was omitted.

-221 “Settings Conflict” The mainframe’s power is off.

-224 “Illegal Parameter” The <state> parameter was not correct.

Reset Condition

At *RST, DISPlay[:WINDow]:STATe is set to ON.

Keysight E8402A, E8404A C-Size Mainframes User and Service Guide 65

Programming the Enhanced Monitor DISPlay Subsystem

DISPlay[:WINDow]:TEXT[:DATA] <string>

DISPlay[:WINDow]:TEXT[:DATA] displays a user defined message string on the

mainframe’s display. The message remains on the display until a key is pressed, the display window is changed programmatically, or the screen saver turns off the display.

Parameters

Name Type Range Default Description

<string> string 186 characters none Message to display on screen. Can be any ASCII

character (decimal value 20 to 225).

Comments

– Four lines of text can be displayed. The display uses a proportional font;

line length can vary from 25 to 45 characters. The string will be clipped at 45 characters if there is not an embedded ‘\n’, or it will be clipped at 4 lines, or at 186 characters. There is no error generated if the string is clipped. Text is white letters on a black background.)

– Embed a ‘\n’ to cause a second, third, or fourth line. For example, the

command

\nmessage capability

DISP:TEXT “this is a test\nof the immediate

.” executed from an RS-232 terminal will create

the following display:

this is a test

of the immediate

message capability.

– Pressing any front panel key (up/down arrow keys or

executing a

DISP:WIND command will remove the text.

ENTER key) or

Error Conditions

The following table lists the most common error conditions and causes. Error numbers and corresponding messages can be found using query.

Number Message Probable Cause

-128 “Numeric data not allowed” The <string> started with a number.

-148 “Character data not allowed” Quotation marks were left off.

SYSTem:ERRor?

-151 “Invalid string data” An embedded new line in the string instead of a ‘\n’.

-221 “Settings Conflict” The mainframe’s power is off.

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DISPlay Subsystem Programming the Enhanced Monitor

Reset Condition

*RST removes text, and set the display screen to MMAin.

Example

The following is a Visual C example:

viPrintf(vi, “disp:text \”this is a test\nof the immediate\nmessage capability.\”\ n”)

Keysight E8402A, E8404A C-Size Mainframes User and Service Guide 67

Programming the Enhanced Monitor FORMat Subsystem

FORMat Subsystem

The FORMat subsystem controls the TRACe data format.

Subsystem Syntax

:FORMat :BORDer NORM|SWAP Sets the byte order of TRACe data. :BORDer? Returns the byte order of the TRACe data.

FORMat:BORDer <order> FORMat:BORDer?

FORMat:BORDer sets the byte order of the data returned by the TRACe

subsystem. significant byte first.

NORMal is with most significant byte first. SWAPped is with least

FORMat:BORDer? returns the byte order of the data returned by the TRACe

subsystem.

Parameters

Name Type Range Description

<order> enum. NORM, SWAP Sets byte order for TRACe subsystem.

Returned Data

Type Range Description

enum. NORM, SWAP String description of byte order.

Comments

– Byte order is not stored in non-volatile memory. Programs requiring SWAP

order should include this command before reading TRACe data.

– Keysight VISA swaps the bytes in the definite block format of viQueryf in a

PC. Therefore, you should not use this command if you are using Keysight VISA.

Reset Condition

At *RST, the byte order is reset to NORMal.

68 Keysight E8402A, E8404A C-Size Mainframes User and Service Guide

HISTory Subsystem Programming the Enhanced Monitor

HISTory Subsystem

The history subsystem gives access to the enhanced monitor’s history-gathering function.

Subsystem Syntax

:HISTory :BLOWer [:HISTogram]? <blower> Returns <blower> histogram data :CURRent :CMAXimum? <supply> Returns max. <supply> current since pwr-on. [:HISTogram]? <supply> Returns <supply> current histogram data :MAXimum? <supply> Returns maximum <supply> current. :POWer :CMAXimum? <supply> Returns max. <supply> power since pwr-on. [:HISTogram]? <supply> Returns <supply> power histogram data. :MAXimum? <supply> Returns maximum <supply> power. :QUEue :COUNt? Returns number of events in history queue. [:FETCh]? <event index> Returns <number> history event from queue. :RESet [:ALL] Resets data in history subsystem to zero. :BLOWer <blower> Resets data in <blower> history to zero. :CURRent <supply> Resets data in <supply> current history to zero. :POWer <supply> Resets data in <supply> power history to zero. :QUEue Erases all data in history queue. :TEMPerature <slot> Resets the data in <slot> history to be zero. :VOLTage <supply> Resets data in <supply> voltage history to zero. :TEMPerature :CMAXimum? <slot> Returns max. <slot> temperature since pwr-on. :CMINimum? <slot> Returns min. <slot> temperature since pwr-on. [:HISTogram]? <slot> Returns for <slot> histogram data. :MAXimum? <slot> Returns maximum <slot> temperature. :MINimum? <slot> Returns minimum <slot> temperature. :TIME :LCALibration? Returns hr, min, sec since last calibration. :LHReset? Returns hr, min, sec since last history reset. :LTST? Returns hr, min, sec since last *TST. :ON? Returns hr, min, sec since power-on. :OPERating? Returns time mainframe has been operating. :UNITs [:TIME]<unit> Sets time units for history subsystem. [:TIME]? Returns time units for history subsystem. :VOLTage :CMAXimum? <supply> Returns max. <supply> voltage since pwr-on. :CMINimum? <supply> Returns min. <supply> voltage since pwr-on. [:HISTogram]? <supply> Returns <supply> voltage histogram data. :MAXimum? <supply> Returns maximum <supply> voltage. :MINimum? <supply> Returns minimum <supply> voltage.

Keysight E8402A, E8404A C-Size Mainframes User and Service Guide 69

Programming the Enhanced Monitor HISTory Subsystem

HISTory:BLOWer[:HISTogram]? <blower>[,MIN|MAX]

HISTory:BLOWer[:HISTogram]? <blower> returns the histogram data for the

specified <blower>. Ten values are returned for the amount of time the <blower>’s RPM level spent in ten different RPM ranges. Those RPM ranges can

be queried with the MIN and MAX optional parameter. The units of the time values returned are HOURs by default, but can be changed with the

HISTory:UNIT[:TIME] command.

Parameters

Name Type Range Default Description

<blower> enum. BLOWer1,

BLOWer2, BLOWer3

optional parameter

enum. MIN, MAX none Returns the maximums or minimums of the

none Selects the fan whose RPM histogram is

desired. BLOWer1 is the main cooling fan, BLOWer2 is the Power Supply cooling fan, BLOWer3 is a second Power Supply cooling fan on the Keysight E8404A mainframes.

RPM ranges.

Returned Data

Type Range Default Description

<range1> int32 0-2147483647 none lowest RPM range. <range2> int32 0-2147483647 none second RPM range. <range3> int32 0-2147483647 none third RPM range. <range4> int32 0-2147483647 none fourth RPM range. <range5> int32 0-2147483647 none fifth RPM range. <range6> int32 0-2147483647 none sixth RPM range. <range7> int32 0-2147483647 none seventh RPM range. <range8> int32 0-2147483647 none eighth RPM range. <range9> int32 0-2147483647 none ninth RPM range. <range10> int32 0-2147483647 none highest RPM range.

Comments

– HIST:BLOW? BLOW1 returns 10 time values, units set/queried by

HIST:UNIT.

– HIST:BLOW? BLOW1,MAX returns 10 values representing the maximums

for each RPM range.

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HISTory Subsystem Programming the Enhanced Monitor

Error Conditions

The following table lists the most common error conditions and causes. Error numbers and corresponding messages can be found using

SYSTem:ERRor?

query.

Number Message Probable Cause

-109 “Missing Parameter” The <blower> parameter was omitted.

-224 “Illegal Parameter” The <blower> or optional parameter not correct.

-311 “Memory error” The historical data’s memory is not available.

Reset Condition

*RST has no effect on the HISTory subsystem.

Related Commands

HISTory:RESet:BLOWer, HISTory:UNITs[:TIME]

Keysight E8402A, E8404A C-Size Mainframes User and Service Guide 71

Programming the Enhanced Monitor HISTory Subsystem

HISTory:CURRent:CMAXimum? <supply>

HISTory:CURRent:CMAXimum? <supply> returns a single floating point number

for the maximum amperage (in milliamps) measured by the Enhanced Monitor for the <supply> since power-on of the mainframe.

Parameters

Name Type Range Default Description

<supply> enum. P5, P12, N12, P24,

N24, N5PT2, N2

Returned Data

Type Range Description

float Maximum current (in amperes) for specified power supply.

none Selects the power supply for the

current maximum request. P5 is positive 5 Vdc supply, N12 is negative 12 Vdc supply, etc.

Comments

– These maximums can be reset by powering the mainframe off and then

powering it back on.

Error Conditions

The following table lists the most common error conditions and causes. Error numbers and corresponding messages can be found using

SYSTem:ERRor?

query.

Number Message Probable Cause

-221 “Settings Conflict” The power supply doesn’t support current measurements.

-224 “Illegal Parameter” The <supply> parameter was not correct.

Reset Condition

*RST has no effect on the HISTory subsystem.

Related Commands

HISTory:CURRent:MAXimum?, HISTory:CURRent:[HISTogram]?

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HISTory Subsystem Programming the Enhanced Monitor

HISTory:CURRent[:HISTogram]? <supply>[,MIN|MAX]

HISTory:CURRent[:HISTogram]? <supply> returns the histogram data held for the

specified <supply>. Ten values are returned for the amount of time the <supply>’s current spent in ten different current ranges. Those current ranges

can be queried with the MIN and MAX optional parameter. The units of the time values returned are HOURs by default, but can be changed with the

HISTory:UNIT[:TIME] command. The units returned for current ranges queried

with the MIN or MAX parameters are integer values in milliamps.

Parameters

Name Type Range Default Description

<supply> enum P5, P12, N12, P24,

N24, N5PT2, N2

optional parameter

enum MIN, MAX none Returns the minimums or maximums of

none Selects the power supply whose current

histogram is desired. P5 is +5 Vdc supply, N12 is -12 Vdc supply, etc.

the current ranges in milliamps.

Returned Data

Type Range Default Description

<range1> int32 0-2147483647 none lowest current range. <range2> int32 0-2147483647 none second current range.

<range3> int32 0-2147483647 none third current range. <range4> int32 0-2147483647 none fourth current range. <range5> int32 0-2147483647 none fifth current range. <range6> int32 0-2147483647 none sixth current range. <range7> int32 0-2147483647 none seventh current range. <range8> int32 0-2147483647 none eighth current range. <range9> int32 0-2147483647 none ninth current range. <range10> int32 0-2147483647 none highest current range.

Comments

– HIST:CURR? P5 returns 10 time values for the +5V supply. –

HIST:CURR? P5,MAX returns 10 values representing the maximum currents

in each current range in milliamps.

Keysight E8402A, E8404A C-Size Mainframes User and Service Guide 73

Programming the Enhanced Monitor HISTory Subsystem

Error Conditions

The following table lists the most common error conditions and causes. Error numbers and corresponding messages can be found using

SYSTem:ERRor?

query.

Number Message Probable Cause

-109 “Missing Parameter” The <supply> parameter was omitted.

-224 “Illegal Parameter” The <supply> or optional parameter not correct.

-221 “Settings Conflict” Power supply doesn’t support current measurements.

-311 “Memory error” The historical data’s memory is not available.

Reset Condition

*RST has no effect on the HISTory subsystem.

Related Commands

HISTory:CURRent:MAXimum?, HISTory:RESet:CURRent, HISTory:UNITs[:TIME]

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HISTory Subsystem Programming the Enhanced Monitor

HISTory:CURRent:MAXimum? <supply>

HISTory:CURRent:MAXimum? <supply> returns a single floating point number for

the maximum amperage that has occurred to the <supply> since manufacture of the mainframe, or the most recent

Parameters

Name Type Range Default Description

<supply> enum P5, P12, N12, P24,

N24, N5PT2, N2

Returned Data

Type Range Description

float Maximum current (in amperes) for specified power supply.

HIST:RES:CURR or HIST:RES:ALL.

none Selects the power supply for the

maximum amperage request. P5 is positive 5 Vdc supply, N12 is negative 12 Vdc supply, etc.

Comments

– The maximum amperage tracking can be zeroed by the HISTory:RESet

commands.

Error Conditions

The following table lists the most common error conditions and causes. Error numbers and corresponding messages can be found using

SYSTem:ERRor?

query.

Number Message Probable Cause

-221 “Settings Conflict” The power supply doesn’t support current measurements.

-224 “Illegal Parameter” The <supply> parameter was not correct.

-311 “Memory error” The historical data’s memory is not available.

Reset Condition

A *RST has no effect on the HISTory subsystem.

Related Commands

HISTory:CURRent:CMAXimum?, HISTory:CURRent:[HISTogram]?, HISTory:RESet:CURRent, HISTory:RESet[:ALL]

Keysight E8402A, E8404A C-Size Mainframes User and Service Guide 75

Programming the Enhanced Monitor HISTory Subsystem

HISTory:POWer:CMAXimum? <supply>

HISTory:POWer:CMAXimum? <supply> returns a single floating point number for

the maximum wattage measured by the Enhanced Monitor for the <supply> since power-on of the mainframe.

Parameters

Name Type Range Default Description

<supply> enum P5, P12, N12, P24,

N24, N5PT2, N2, TOTal

Returned Data

Type Range Description

float Maximum power (in watts) for specified power supply.

none Selects the power supply for the current

maximum request. P5 is positive 5 Vdc supply, N12 is negative 12 Vdc supply, etc.

Comments

– These maximums can be reset by powering the mainframe off and then

powering it back on.

Error Conditions

The following table lists the most common error conditions and causes. Error numbers and corresponding messages can be found using

SYSTem:ERRor?

query.

Number Message Probable Cause

-221 “Settings Conflict” The power supply doesn’t support current measurements.

-224 “Illegal Parameter” The <supply> parameter was not correct.

Reset Condition

A *RST has no effect on the HISTory subsystem.

Related Commands

HISTory:POWer:MAXimum?, HISTory:POWer:[HISTogram]?

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HISTory Subsystem Programming the Enhanced Monitor

HISTory:POWer[:HISTogram]? <supply>[,MIN|MAX]

HISTory:POWer[:HISTogram]? <supply> returns the histogram data held for the

<supply>. Ten values are returned for the amount of time the <supply>’s power

spent in ten different power ranges. Those power ranges can be queried with the

MIN and MAX optional parameter. The units of the time values returned are

HOURs by default, but can be changed with the command.The units returned for power ranges queried with the parameters are integer values in milliwatts.

Parameters

Name Type Range Default Description

<supply> enum. P5, P12, N12, P24,

N24, N5PT2, N2, TOTal

optional parameter

enum. MIN, MAX none Returns the maximum or minimum of the

none Selects the power supply whose power

HISTory:UNIT[:TIME]

MIN or MAX

histogram is desired. P5 is +5 Vdc supply, N12 is -12 Vdc supply, etc.

power range in milliwatts.

Returned Data

Type Range Default Description

<range1> int32 0-2147483647 none lowest power range. <range2> int32 0-2147483647 none second power range.

<range3> int32 0-2147483647 none third power range. <range4> int32 0-2147483647 none fourth power range. <range5> int32 0-2147483647 none fifth power range. <range6> int32 0-2147483647 none sixth power range. <range7> int32 0-2147483647 none seventh power range. <range8> int32 0-2147483647 none eighth power range. <range9> int32 0-2147483647 none ninth power range. <range10> int32 0-2147483647 none highest power range.

Comments

– HIST:POW? P5 returns 10 time values for +5V supply. –

HIST:POW? P5,MAX returns 10 values representing the maximum power

for each power range in milliwatts.

Keysight E8402A, E8404A C-Size Mainframes User and Service Guide 77

Programming the Enhanced Monitor HISTory Subsystem

Error Conditions

The following table lists the most common error conditions and causes. Error numbers and corresponding messages can be found using

SYSTem:ERRor?

query.

Number Message Probable Cause

-224 “Illegal Parameter” The <supply> or optional parameter not correct.

-109 “Missing Parameter” The <supply> parameter was omitted.

-311 “Memory error” The historical data’s memory is not available.

-221 “Settings Conflict” The power supply doesn’t support power

measurements.

Reset Condition

A *RST has no effect on the HISTory subsystem.

Related Commands

HISTory:POWer:MAXimum?, HISTory:RESet:POWer, HISTory:UNITs[:TIME]

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HISTory Subsystem Programming the Enhanced Monitor

HISTory:POWer:MAXimum? <supply>

HISTory:POWer:MAXimum? <supply> returns a single floating point number for

the maximum wattage measured by the Enhanced Monitor for the <supply> since either manufacture of the mainframe or the most recent

HIST:RES:ALL.

Parameters

Name Type Range Default Description

<supply> enum P5, P12, N12, P24,

N24, N5PT2, N2, TOTal

none Selects the power supply for the

maximum wattage request. P5 is positive 5 Vdc supply, N12 is negative 12 Vdc supply, etc.

Returned Data

HIST:RES:POW or

Type Range Description

float Maximum current (in amperes) for specified power supply.

Comments

– The maximum wattage tracking can be zeroed by the HISTory:RESet

commands.

Error Conditions

The following table lists the most common error conditions and causes. Error numbers and corresponding messages can be found using query.

Number Message Probable Cause

-109 “Missing parameter” You must include the <supply> parameter.

-221 “Settings Conflict” The power supply doesn’t support power measurements.

-224 “Illegal Parameter” The <supply> parameter was not correct.

-311 “Memory error” The historical data’s memory is not available.

SYSTem:ERRor?

Reset Condition

A *RST has no effect on the HISTory subsystem.

Keysight E8402A, E8404A C-Size Mainframes User and Service Guide 79

Programming the Enhanced Monitor HISTory Subsystem

Related Commands

HISTory:POWer:CMAXimum?, HISTory: POWer:[HISTogram]?, HISTory:RESet: POWer, HISTory:RESet[:ALL]

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HISTory Subsystem Programming the Enhanced Monitor

HISTory:QUEue:COUNt?

HISTory:QUEue:COUNt? returns the number of history events in the history

queue.The maximum number of events capable of being stored in the history queue varies from 500 to 1000 depending on the type of events stored.

Returned Data

Type Range Default Description

uint16 0 through 1000 none The count of history events presently in the history

queue.

Comments

– HIST:QUE:COUN? determines the maximum number accepted by the

HIST:QUE:FETC? command.

Error Conditions

The following table lists the most common error conditions and causes. Error numbers and corresponding messages can be found using

SYSTem:ERRor?

query.

Number Message Probable Cause

-311 “Memory error” The history queue’s memory is not available.

Reset Condition

A *RST has no effect on the HISTory subsystem.

Related Commands

HISTory:QUEue[:FETCh]?, HISTory:RESet:QUEue, HISTory:UNITs[:TIME], HISTory:UNITs[:TIME]?

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Programming the Enhanced Monitor HISTory Subsystem

HISTory:QUEue[:FETCh]? <event index>

HISTory:QUEue[:FETCh]? <event index> returns a history event from the history

queue corresponding to <event index>. The queue is in chronological order, with the oldest event in the index as <event index> number 1.

Parameters

Name Type Range Default Description

<event index> uint16 1 through the value returned

from HIST:QUEue:COUNt

Returned Data

Type Range Default Description

<event type> int16 0 to 127 none An number associated with the

<time stamp> uint32 0 to 4294967295 none Amount of time since

<event string> string Event string associated with the

none The index of the history

event requested.

logged event.

manufacture that the event occurred. Units are set with HIST:UNIT

logged event.

Comments

– Many types of events are logged: amount of time on; wake-up test failures;

temperature, current, power, voltage, fan warning events and conditions; calibration occurrences and results; test occurrences and results; and all history reset events. The event strings return in the language selected on the display.

Event Number

0 Mainframe powered off.

1 History queue was reset/cleared

3 Unexpected power-down occurred. Data was lost.

4 Power-on test failure. Result given in the event string. Refer to next comment.

5 - 17 Front slot temperature over limit. Event Number 5 is slot 0; 17 is slot 12. Limit is

18 - 30 Middle slot temperature was over the limit. Event Number 18 is slot 0; 30 is slot

Description

given in the event string.

12. Limit is given in the event string.

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Event Number

31 - 43 Rear slot temperature was over the limit. Event Number 31 is slot 0; 43 is slot 12.

44 Ambient temperature was over limit. Limit given in the event string.

45 Power supply temperature was over limit.

47 - 53 Voltage was over upper limit. Event 47 is +5V supply, ... +12V, -12V, +24V, -24V,

54 - 60 Voltage was under lower limit. Event 54 is +5V supply, ... +12V, -12V, +24V, -24V,

61 - 67 Current was over limit. Limit given in the event string. Event 61 is +5V supply, ...

68 Total power was over limit. Limit given in the event string.

69 - 71 Fan was over upper limit. Event 69 is BLOW1, 70 is BLOW2, 71 is BLOW3

72 - 74 Fan was under lower limit. Event 72 is BLOW1, 73 is BLOW2, 74 is BLOW3

75 Calibration or test occurred. Kind and result are given in event string.

76 Reset of history data occurred. Event string specifies which one.

Description

Limit is given in the event string.

-5.2V, and event 53 is -2V supply.

-5.2V, and event 60 is -2V supply.

+12V, -12V, +24V, -24V, -5.2V, and event 67 is -2V supply.

77 VXI SYSRESET occurred.

78 Queue is full and event(s) are lost.

79 Maintenance timer warning occurred.

– Power-on test failures (Event number 4) include a hex value (0000 to FFFF)

which is a sum of the failures that occurred. The following list indicates the possible power-on test failures:

-- Bit 0 set: non-volatile timing data lost or corrupted.

-- Bit 1 set: non-volatile power supply data lost or corrupted.

-- Bit 2 set: non-volatile maximum measurements lost or corrupted.

-- Bit 3 set: non-volatile minimum measurements lost or corrupted.

-- Bit 4 set: non-volatile user settings lost or corrupted.

-- Bit 5 set: non-volatile RS-232 settings lost or corrupted.

-- Bit 6 set: non-volatile calibration settings lost or corrupted.

-- Bit 7 set: non-volatile histogram data lost or corrupted.

-- Bit 10 set: non-volatile history queue data lost or corrupted.

-- Bit 12 set: wake-up ROM test failed.

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Programming the Enhanced Monitor HISTory Subsystem

-- Bit 13 set: wake-up RAM test failed.

-- Bit 14 set: wake-up VXI Communication test failed.

-- Bit 15 set: unexpected power failure occurred, some data loss likely.

– Once an event is logged, it stays there. For example, an event at event

index 7 will always be at event index 7 until the queue is reset.

Error Conditions

The following table lists the most common error conditions and causes. Error numbers and corresponding messages can be found using query.

Number Message Probable Cause

-109 “Missing parameter” You must include the <event index> parameter.

-222 “Data out of range” The <event number> was beyond HIST:QUE:COUN.

-311 “Memory error” The history queue’s memory is not available.

SYSTem:ERRor?

Reset Condition

A *RST has no effect on the HISTory subsystem.

Related Commands

HISTory:QUEue:COUNt?, HISTory:RESet:QUEue, HISTory:UNITs[:TIME], HISTory:UNITs[:TIME]?

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HISTory Subsystem Programming the Enhanced Monitor

HISTory:RESet[:ALL] HISTory:RESet:BLOWer [<blower>] HISTory:RESet:CURRent [<supply>] HISTory:RESet:POWer [<supply>] HISTory:RESet:QUEue HISTory:RESet:TEMPerature [<slot>] HISTory:RESet:VOLTage [<supply>]

The HISTory:RESet commands erase all data being held by the HISTory subsystem: histograms, minimum/maximum values, and the history queue. For example, historical data stored for the specified <blower>, amperage historical data for the specified <supply>, etc. The command does not erase stripchart data. The following table describes the commands and their parameters. These commands are not allowed while the mainframe’s power is off.

HIST:RES:ALL erases all historical data; HIST:RES:BLOW erases the

HIST:RES:CURR erases the

HISTory:RESet

Parameters

Command Parameter(s) Range Default Description

[:ALL] Erases all historical data. The history queue retains two entries (ALL

HISTORY RESET, and QUEUE RESET) marking the time between manufacture and the HISTory:RESet. These commands are not allowed while the mainframe’s power is off.

:BLOW <blower> BLOWer1,

BLOWer2, BLOWer3

:CURR <supply> P5, P12, N12, P24,

N24, N5PT2, N2, P5STby

:POW <supply> P5, P12, N12, P24,

N24, N5PT2, N2, TOTal

:QUE Erases all the events stored in the history queue. One event is put in

:TEMP <slot> OUT0…OUT12,

DELTa0…DELTa12, AMBient

PSUPply

:VOLT <supply> P5, P12, N12, P24,

N24, N5PT2, N2

none Selects the fan whose historical data is to be erased. BLOWer1 is the

main cooling fan, BLOWer2 is the Power Supply cooling fan, BLOWer3 is a second Power Supply cooling fan on the Keysight E8404A mainframes.

none Erases the amperage historical data for the selected <supply>.

Selects the power supply whose historical data is to be zeroed. P5 is positive 5 Vdc supply, N12 is negative 12 Vdc supply, etc.

none Erases the wattage historical data for the <supply>. Selects the

power supply whose historical data is to be zeroed. P5 is positive 5 Vdc supply, N12 is negative 12 Vdc supply, etc.

the history queue on this command: an event logging the time since manufacture of the mainframe until the HIST:RES:QUE command. This is a completely destructive command. There is no retrieving the history queue. It is primarily needed if the history queue has filled up.

none Absolute Slot Temperature Histogram

Delta Slot Temperature Histogram Ambient Temperature Histogram Power Supply Temperature Histogram

none Erases the voltage historical data for the selected <supply>.

P5 is positive 5 Vdc supply, N12 is negative 12 Vdc supply, etc.

Keysight E8402A, E8404A C-Size Mainframes User and Service Guide 85

Programming the Enhanced Monitor HISTory Subsystem

Comments

– If a parameter is left off, then all the historical data for all parameters of

that command is erased. For example, if the <blower> parameter is left off of the

HIST:RES:BLOW command, then ALL of the BLOWer historical data

is erased.

– These commands are not allowed while the mainframe’s power is off.

Error Conditions

The following table lists the most common error conditions and causes. Error numbers and corresponding messages can be found using query.

Number Message Probable Cause

-221 “Settings Conflict” The mainframe’s power is off.

-224 “Illegal Parameter” The parameter was not correct.

SYSTem:ERRor?

-311 “Memory error” The historical data’s memory is not available.

Reset Condition

A *RST has no effect on the HISTory subsystem.

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HISTory Subsystem Programming the Enhanced Monitor

HISTory:TEMPerature:CMAXimum? <slot> HISTory:TEMPerature:CMINimum? <slot>

HISTory:TEMPerature:CMAXimum? <slot> returns a single floating point number

for the maximum temperature measured by the Enhanced Monitor for the <slot> parameter since power-on of the mainframe.

HISTory:TEMPerature:CMINimum? <slot> returns a single floating point number

for the minimum temperature measured by the Enhanced Monitor for the <slot> parameter since power-on of the mainframe.

Parameters

Name Type Range Default Description

<slot> enum. OUT0…OUT12,

DELTa0…DELTa12,

AMBient

none Exhaust temperature for slots 0 - slot

12 Temperature change above the ambient

temperature for slots0 - slot 12 Entrance air temperature

Returned Data

Type Range Description

float Minimum or maximum temperature.

Comments

– These maximums/minimums can be reset by powering the mainframe off

and then powering it back on.

Error Conditions

The following table lists the most common error conditions and causes. Error numbers and corresponding messages can be found using

SYSTem:ERRor?

query.

Number Message Probable Cause

-109 “Missing parameter” You must include the <slot> parameter.

-224 “Illegal Parameter” The <slot> parameter was not correct.

Reset Condition

A *RST has no effect on the HISTory subsystem.

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Programming the Enhanced Monitor HISTory Subsystem

Related Commands

HISTory:TEMPerature:MAXimum?, HISTory:TEMPerature:MINimum?, HISTory:TEMPerature:[HISTogram]?

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HISTory:TEMPerature[:HISTogram]? <slot>[,MIN|MAX]

HISTory:TEMPerature[:HISTogram]? <slot> returns the histogram data held for the

specified <slot>. Ten values are returned for the amount of time the <slot>’s temperature spent in ten different temperature ranges. Those temperature ranges can be queried with the MIN and MAX optional parameter. The units of the time values returned are HOURs by default, but can be changed with the

HISTory:UNIT[:TIME] command. The units returned for temperature ranges

queried with the degree Celsius (0.x

Parameters

Name Type Range Default Description

<slot> enum. OUT0…OUT12,

optional parameter

MIN or MAX parameters are an integer values in tenths of a

C).

none Absolute Slot Temperature DELTa0…DELTa12, AMBient

PSUPply

enum. MIN, MAX none Returns the maximums or minimums of

Delta Slot Temperature Histogram Ambient Temperature Histogram Power Supply Temperature

the temperature ranges.

Returned Data

Type Range Default Description

<range1> int32 0-2147483647 none lowest temperature range. <range2> int32 0-2147483647 none second temperature range. <range3> int32 0-2147483647 none third temperature range. <range4> int32 0-2147483647 none fourth temperature range. <range5> int32 0-2147483647 none fifth temperature range. <range6> int32 0-2147483647 none sixth temperature range. <range7> int32 0-2147483647 none seventh temperature range. <range8> int32 0-2147483647 none eighth temperature range. <range9> int32 0-2147483647 none ninth temperature range. <range10> int32 0-2147483647 none highest temperature range.

Comments

– HIST:TEMP? OUT2 returns 10 time values for the exhaust temperature of

slot 2, units set/queried by HIST:UNIT.

–

HIST:TEMP? OUT2,MAX returns 10 temperatures that returns the

maximums for each temperature range in tenths of a degree Celsius (0.x

C) for slot 2.

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Programming the Enhanced Monitor HISTory Subsystem

Error Conditions

The following table lists the most common error conditions and causes. Error numbers and corresponding messages can be found using

SYSTem:ERRor?

query.

Number Message Probable Cause

-109 “Missing Parameter” The <slot> parameter was omitted.

-224 “Illegal Parameter” The <slot> or optional parameter were not correct.

-311 “Memory error” The historical data’s memory is not available.

Reset Condition

A *RST has no effect on the HISTory subsystem.

Related Commands

HISTory:RESet:CURRent, HISTory:UNITs[:TIME]

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HISTory Subsystem Programming the Enhanced Monitor

HISTory:TEMPerature:MAXimum? <slot> HISTory:TEMPerature:MINimum? <slot>

HISTory:TEMPerature:MAXimum? <slot> returns a single floating point number for

the maximum temperature measured by the Enhanced Monitor for the <slot>

either manufacture of the mainframe or the most recent HIST:RES:TEMP or

since

HIST:RES:ALL.

HISTory:TEMPerature:MINimum?

<slot> returns a single floating point number for the minimum temperature measured by the Enhanced Monitor for the <slot> since either manufacture of the mainframe or the most recent HIST:RES:TEMP.

Parameters

Name Type Range Default Description

<slot> enum. OUT0…OUT12,

DELTa0…DELTa12,

AMBient

none Exhaust temperature for slots 0 - slot 12

Temperature change above the ambient temperature for slots0 - slot 12

Entrance air temperature

Returned Data

Type Range Description

float minimum or maximum temperature

Comments

– The maximum/minimum temperature tracking can be zeroed by the

HISTory:RESet commands.

Error Conditions

The following table lists the most common error conditions and causes. Error numbers and corresponding messages can be found using query.

Number Message Probable Cause

-109 “Missing parameter” You must include the <event index> parameter.

-224 “Illegal Parameter” the <slot> parameter was not correct.

-311 “Memory error” the historical data’s memory is not available.

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SYSTem:ERRor?

Programming the Enhanced Monitor HISTory Subsystem

Reset Condition

A *RST has no effect on the HISTory subsystem.

Related Commands

HISTory:TEMPerature:[HISTogram]?, HISTory:RESet:TEMPerature, HISTory:RESet[:ALL]

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HISTory Subsystem Programming the Enhanced Monitor

HISTory:TIME:LCALibration?

HISTory:TIME:LCALibration? returns the amount of operating time that has

passed since the last calibration was performed.

Returned Data

Type Range Default Description

<hours> uint32 0 to 4294967295 none Hours since cal <min> uint16 0 to 60 none + minutes since cal <sec> uint16 0 to 60 none + seconds since cal

Comments

– This query returns 4294967295,+0,+0 if a CAL, CAL:TEMP, or CAL:VOLT

has not been done. The history queue contains information on which calibration was done.

Reset Condition

*RST has no effect on this query.

Related Commands

CAL:VOLT?, CAL:TEMP?, CAL[:ALL]?

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Programming the Enhanced Monitor HISTory Subsystem

HISTory:TIME:LHReset?

HISTory:TIME:LHReset? returns the amount of operating time since the last HISTory:RESet (or any specific HIST:RES:xxxx) command.

Returned Data

Type Range Default Description

<hours> uint32 0 to 4294967295 none hours since history reset <min> uint16 0 to 60 none + minutes since history reset <sec> uint16 0 to 60 none + seconds since history reset

Comments

– If no HISTory:RESet has been performed, this query returns the amount of

time since mainframe manufacture. The history queue contains information on which reset was done.

Error Conditions

The following table lists the most common error conditions and causes. Error numbers and corresponding messages can be found using

SYSTem:ERRor?

query.

Number Message Probable Cause

-311 “Memory Error” Non-volatile memory is inaccessible.

Reset Condition

*RST has no effect on this query.

Related Commands

HISTory:RESet[:ALL], HISTory:RESet:TEMPerature, HISTory:RESet:QUEue

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HISTory Subsystem Programming the Enhanced Monitor

HISTory:TIME:LTST?

HISTory:TIME:LTST? returns the amount of operating time that has passed since

the last

Returned Data

Comments

*TST? or TEST command was performed.

Type Range Default Description

<hours> uint32 0 to 4294967295 none Hours since *TST

<min> uint16 0 to 60 none + minutes since *TST <sec> uint16 0 to 60 none + seconds since *TST

– This query returns 4294967295,+0,+0 if a *TST? or TEST has not been

done. The history queue contains information on which test was done.

Reset Condition

*RST has no effect on this query.

Related Commands

*TST?, TEST[:ALL]?, TEST:BLOWer?, TEST:SENSe?, TEST:DISPlay?, TEST:TEMPerature?, TEST:MEMory?, TEST:TIME?

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Programming the Enhanced Monitor HISTory Subsystem

HISTory:TIME:ON?

HISTory:TIME:ON? returns the amount of time operating since the last power up.

Returned Data

Type Range Default Description

<hours> uint32 0 to 4294967295 none Hours since last power-on <min> uint16 0 to 60 none + minutes since last power-on <sec> uint16 0 to 60 none + seconds since last power-on

Comments

– When the power is turned off and the enhanced monitor is operating on

external power, the timer does not advance.

Reset Condition

*RST has no effect on this query.

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HISTory Subsystem Programming the Enhanced Monitor

HISTory:TIME:OPERating?

HISTory:TIME:OPERating? returns the amount of time the mainframe has been

operating since the last factory maintenance.

Returned Data

Type Range Default Description

<hours> uint32 0 to 4294967295 none Hours since last factory maintenance <min> uint16 0 to 60 none + minutes since last factory maintenance <sec> uint16 0 to 60 none + seconds since last factory maintenance

Comments

– Time stands still while the mainframe’s power supply is off. This time

returned does not indicate any time that the enhanced monitor may have been running on external 5V.

Error Conditions

The following table lists the most common error conditions and causes. Error numbers and corresponding messages can be found using

SYSTem:ERRor?

query.

Number Message Probable Cause

-311 “Memory Error” Non-volatile memory is inaccessible.

Reset Condition

*RST has no effect on this query.

Keysight E8402A, E8404A C-Size Mainframes User and Service Guide 97

Programming the Enhanced Monitor HISTory Subsystem

HISTory:UNIT[:TIME] <unit> HISTory:UNIT[:TIME]?

HISTory:UNIT[:TIME] <unit> sets the time units that will be used to report

historical data with histograms and history events.

HISTory:UNIT[:TIME]? returns a string (enumerated) of the time units that are

used to report historical data with histograms and history events. The strings returned are: HOUR, MIN, SEC.

Parameters

Name Type Range Default Description

<unit> enum. HOUR,

MINute, SECond

Returned Data

HOUR Selects the time unit used within the

HISTory subsystem.

Type Range Description

enum. HOUR, MIN, SEC Time units for reporting historical data.

Comments

– Use of this command does not change the amount and resolution of the

data kept by the enhanced monitor’s HISTory subsystem. It simply changes the reporting of that data. When set to hours it reports the data to the nearest hour, and so on.

– The setting is stored in non-volatile memory with the

SYSTem:NVSave

command.

Error Conditions

The following table lists the most common error conditions and causes. Error numbers and corresponding messages can be found using query.

Number Message Probable Cause

-109 “Missing parameter” The <unit> parameter was omitted.

-224 “Illegal Parameter” The <unit> parameter was not correct.

SYSTem:ERRor?

Reset Condition

*RST sets units back to the last value saved with the SYSTem:NVSave command.

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Related Commands

SYSTem:NVSave, SYSTem:NVRecall, HISTory:QUEue[:FETCh]?, HISTory:TEMPerature[:HISTogram]?, HISTory:CURRent[:HISTogram]?

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Programming the Enhanced Monitor HISTory Subsystem

HISTory:VOLTage:CMAXimum? <supply> HISTory:VOLTage:CMINimum? <supply>

HISTory:VOLTage:CMAXimum? <supply> returns the maximum voltage measured

by the Enhanced Monitor for the <supply> since power-on of the mainframe.

HISTory:VOLTage:CMINimum? <supply> returns the minimum voltage measured

by the Enhanced Monitor for the <supply> since power-on of the mainframe.

Parameters

Name Type Range Default Description

<supply> enum. P5,P12,N12,P24,

N24,N5PT2,N2, P5STby

Returned Data

none Selects the power supply for the current

maximum request. P5 is positive 5 Vdc supply, N12 is negative 12 Vdc supply, etc.

Type Range Description

float. Minimum or maximum voltage.

Comments

– These maximums and minimums can be reset by powering the mainframe

off and then powering it back on.

Error Conditions

The following table lists the most common error conditions and causes. Error numbers and corresponding messages can be found using

SYSTem:ERRor?

query.

Number Message Probable Cause

-224 “Illegal Parameter” The <supply> parameter was not correct.

Reset Condition

A *RST has no effect on the HISTory subsystem.

Related Commands

HISTory:VOLTage:MAXimum?, HISTory:VOLTage:MINimum?, HISTory:VOLTage:[HISTogram]?

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Keysight Technologies E8402A, E8404A User And Service Manual

Specifications and Main Features

Frequently Asked Questions

User Manual

User and Service Manual

1 Getting Started

Product Overview

Preparing Your VXI System for Use

AC Power Requirements

Positioning the Mainframe for Adequate Cooling

Connecting the Mainframe to a Permanent Earth Ground

Installing VXI Instruments

3 Tighten the retaining screws on the top and bottom of the module.

Installing C-Size Instruments

Figure 1-2 Installing C-Size Instruments in the Keysight E840xA Mainframe

Installing A- and B-Size Instruments

Figure 1-3 Installing A- and B-Size Instruments in the Keysight E840xA Mainframe

Configuring Your Mainframe

Setting the Enhanced Monitor VXI Logical Address

Figure 1-4 Rear panel of the Keysight E8402 and E8404 VXI Mainframes

RS-232 Interface

External +5V Supply

Using the Remote Power-On Pins

Figure 1-5 Remote Standby Switch Wiring.

Disabling the On/Stdby Switch

Figure 1-6 Disabling the On/Stdby Switch

1 Turn off the mainframe and remove the power cord.

2 Remove the mainframe cover by removing the 10 m3x6 flat head torx screws.

Mainframe Options and Accessories

2 Using the Enhanced Monitor

Figure 2-1 Keysight E8402A and E8404A Enhanced Monitoring Front Panel

Using the Enhanced Monitor

Using the Display

Figure 2-2 Typical Displays for the Keysight E8402A and E8404A Enhanced Monitor

Menu Map

Figure 2-3 Keysight E8402 & E8404 Enhanced Monitor Display Menu Map

Figure 2-4 Keysight E8402 & E8404 Enhanced Monitor Display Menu Map (continued)

Enhanced Monitor Fan Control

Software Control of Fan Speed

Setting Enhanced Monitor Limits

Temperature Limits

Current and Power Limits

Handling Warnings

Save The Limits

Enhanced Monitor Measurement Cycles

Using the History Queue

HISTory Queue

Figure 2-5 Example History Queue Display

RS-232 Programming

Backspace In TERMinal mode, a backspace means "back-up." It becomes a

Ctrl-R In TERMinal mode, this provides a "recall last command string" feature.

Ctrl-T In either TERMinal or RAW mode, Ctrl-T performs a

Ctrl-C In either TERMinal or RAW mode, Ctrl-C performs the equivalent of a

Diagnostic Connector

Table 2-1 Diagnostic Connector Pin Descriptions

+5VC (pin 6)

+12VC (pin 7)

+5V STDBY (pins 8, 21)

SYSRESET* (pin 10)

ACFAIL* (pin 23)

Understanding SCPI Commands

Common Command Format

SCPI Command Format

Command Separator

Abbreviated Commands

Implied Commands

Parameters

Linking Commands

Programming Examples

Example 1: Self Test & Verification

Example 2: Setting up the Mainframe

Example 3: Set-up the RS-232

Example 4: Reading Current Status Information

SCPI Command Reference

CALibration Subsystem

Subsystem Syntax

DISPlay Subsystem

Subsystem Syntax

DISPlay[:WINDow] <display window> DISPlay[:WINDow]?

Parameters