HP E1328A User manual

Contents
HP E1328A D/A Converter Module User’s Manual
Warranty . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
WARNINGS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Safety Symbols . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Declaration of Conformity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Reader Comment Sheet . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Chapter 1. Getting Started with the HP E1328A . . . . . . . . . . . . . . . . . . . . . . . 11
Using This Chapter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
D/A Converter Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
General Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Instrument Definition . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Programming the D/A Converter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Selecting SCPI Commands . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Chapter 2. Configuring the HP E1328A . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Using This Chapter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Warnings and Cautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Setting the Logical Address Switch . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Selecting Voltage or Current Output . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Connecting Field Wiring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Wiring Guidelines . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Chapter 3. Using the HP E1328A . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Using This Chapter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
D/A Converter Commands . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Reset Conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Electronic Voltage Adjustment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
Outputting Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
Electronic Current Adjustment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
Outputting Current . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
Chapter 4. Understanding the HP E1328A . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
Using This Chapter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
Commands for D/A Converter Operation . . . . . . . . . . . . . . . . . . . . . . . . . 31
Voltage Output . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
Remote Sense . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
Maximum Lead Resistance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
Operation with Fixed Voltage Sources in Series . . . . . . . . . . . . . . . . . . . 34
Adjustment Under Actual Lead and Load Conditions . . . . . . . . . . . . . . . . 34
Current Output . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
Querying the D/A Converter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
HP E1328A D/A Converter Module User’s Manual Contents 1

Chapter 5. HP E1328A Command Reference . . . . . . . . . . . . . . . . . . . . . . . . . 39
Using This Chapter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
Command Types . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
Common Command Format . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
SCPI Command Format . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
Linking Commands . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41
SCPI Command Reference . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41
CALibration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42
CALibrationn:CURRent . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42
CALibrationn:STATe . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43
CALibrationn:STATe? . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43
CALibrationn:VOLTage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44
DISPlay . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45
DISPlay:MONitor:CHANnel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45
DISPlay:MONitor:CHANnel? . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46
DISPlay:MONitor[:STATe] . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46
DISPlay:MONitor:STRing? . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46
[SOURce:] . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47
[SOURce:]CURRentn. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47
[SOURce:]CURRentn? . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47
[SOURce:]FUNCtionn? . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48
[SOURce:]VOLTagen. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48
[SOURce:]VOLTagen? . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48
SYSTem . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49
SYSTem:ERRor? . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49
IEEE-488.2 Common Command Quick Reference . . . . . . . . . . . . . . . . . . . . 50
HP E1328A Command Quick Reference . . . . . . . . . . . . . . . . . . . . . . . . . 51
Appendix A. HP E1328A Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53
Appendix B. HP E1328A Register-Based Programming . . . . . . . . . . . . . . . . . . . 55
Using This Appendix . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55
Addressing the Registers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55
The Base Address . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56
Register Offset . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58
Register Definitions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59
Register Descriptions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60
Manufacturer ID Register . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60
Device Type Register . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60
Status/Control Register . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60
Channel Mode Registers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 63
Channel Output Registers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 63
Command and Parameter Registers . . . . . . . . . . . . . . . . . . . . . . . . . 64
A Register-Based Algorithm . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 71
Programming Examples . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 72
System Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 72
Resetting the Module . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 72
2 HP E1328A D/A Converter Module User’s Manual Contents

Reading the ID, Device Type, and Status Registers . . . . . . . . . . . . . . . . . . . . 74
Outputting a Voltage or Current . . . . . . . . . . . . . . . . . . . . . . . . . . . 76
Using an Embedded
HP RADI-EPC7 Computer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 79
Appendix C. HP E1328A Error Messages . . . . . . . . . . . . . . . . . . . . . . . . . . . 83
Index . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 85
HP E1328A D/A Converter Module User’s Manual Contents 3

4 HP E1328A D/A Converter Module User’s Manual Contents

Certification
Hewlett-Packard Company certifies that this product met its published specifications at the time of shipment from the factory. Hewlett-
Packard further certifies that its calibration measurements are traceable to the United States National Institute of Standards and Technol-
ogy (formerly National Bureau of Standards), to the extent allowed by that organization’s calibration facility, and to the calibration
facilities of other International Standards Organization members.
Warranty
This Hewlett-Packard product is warranted against defects in materials and workmanship for a period of three years from date of ship-
ment. Duration and conditions of warranty for this product may be superseded when the product is integrated into (becomes a part of)
other HP products. During the warranty period, Hewlett-Packard Company will, at its option, either repair or replace products which
prove to be defective.
For warranty service or repair, this product must be returned to a service facility designated by Hewlett-Packard (HP). Buyer shall pre-
pay shipping charges to HP and HP shall pay shipping charges to return the product to Buyer. However, Buyer shall pay all shipping
charges, duties, and taxes for products returned to HP from another country.
HP warrants that its software and firmware designated by HP for use with a product will execute its programming instructions when
properly installed on that product. HP does not warrant that the operation of the product, or software, or firmware will be uninterrupted
or error free.
Limitation Of Warranty
The foregoing warranty shall not apply to defects resulting from improper or inadequate maintenance by Buyer, Buyer-supplied prod-
ucts or interfacing, unauthorized modification or misuse, operation outside of the environmental specifications for the product, or im-
proper site preparation or maintenance.
The design and implementation of any circuit on this product is the sole responsibility of the Buyer. HP does not warrant the Buyer’s
circuitry or malfunctions of HP products that result from the Buyer’s circuitry. In addition, HP does not warrant any damage that oc-
curs as a result of the Buyer’s circuit or any defects that result from Buyer-supplied products.
NO OTHER WARRANTY IS EXPRESSED OR IMPLIED. HP SPECIFICALLY DISCLAIMS THE IMPLIED WARRANTIES OF
MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
Exclusive Remedies
THE REMEDIES PROVIDED HEREIN ARE BUYER’S SOLE AND EXCLUSIVE REMEDIES. HP SHALL NOT BE LIABLE
FOR ANY DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES, WHETHER BASED ON CON-
TRACT, TORT, OR ANY OTHER LEGAL THEORY.
Notice
The information contained in this document is subject to change without notice. HEWLETT-PACKARD (HP) MAKES NO WAR-
RANTY OF ANY KIND WITH REGARD TO THIS MATERIAL, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WAR-
RANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. HP shall not be liable for errors contained
herein or for incidental or consequential damages in connection with the furnishing, performance or use of this material. This docu-
ment contains proprietary information which is protected by copyright. All rights are reserved. No part of this document may be photo-
copied, reproduced, or translated to another language without the prior written consent of Hewlett-Packard Company. HP assumes no
responsibility for the use or reliability of its software on equipment that is not furnished by HP.
U.S. Government Restricted Rights
The Software and Documentation have been developed entirely at private expense. They are delivered and licensed as "commercial
computer software" as defined in DFARS 252.227-7013 (October 1988), DFARS 252.211.7015 (May 1991) or DFARS 252.227-7014
(June 1995), 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), whichever is applicable. You have only those rights provided for
such Software and Documentation by the applicable FAR or DFARS clause or the HP standard software agreement for the product involved.
HP E1328A User’s Manual
Edition 5
Copyright © 1996 Hewlett-Packard Company. All Rights Reserved.
HP E1328A User’s Manual 5

Frame or chassis ground terminal—typi-
cally connects to the equipment’s metal
frame.
Alternating current (AC).
Direct current (DC).
Indicates hazardous voltages.
Calls attention to a procedure, practice, or
condition that could cause bodily injury or
death.
Calls attention to a procedure, practice, or con-
dition that could possibly cause damage to
equipment or permanent loss of data.
Indicates the field wiring terminal that must
be connected to earth ground before operat-
ing the equipment—protects against electri-
cal shock in case of fault.
Instruction manual symbol affixed to prod-
uct. Indicates that the user must refer to the
manual for specific WARNING or CAU-
TION information to avoid personal injury
or damage to the product.
or
WARNINGS
The following general safety precautions must be observed during all phases of operation, service, and repair of this product.
Failure to comply with these precautions or with specific warnings elsewhere in this manual violates safety standards of design,
manufacture, and intended use of the product. Hewlett-Packard Company assumes no liability for the customer’s failure to
comply with these requirements.
Ground the equipment: For Safety Class 1 equipment (equipment having a protective earth terminal), an uninterruptible safety earth
ground must be provided from the mains power source to the product input wiring terminals or supplied power cable.
DO NOT operate the product in an explosive atmosphere or in the presence of flammable gases or fumes.
For continued protection against fire, replace the line fuse(s) only with fuse(s) of the same voltage and current rating and type.
DO NOT use repaired fuses or short-circuited fuse holders.
Keep away from live circuits: Operating personnel must not remove equipment covers or shields. Procedures involving the removal
of covers or shields are for use by service-trained 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 im-
paired, 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 service-trained personnel. If necessary, return the product to a Hewlett-Packard Sales and Service Of-
fice for service and repair to ensure that safety features are maintained.
DO NOT service or adjust alone: Do not attempt internal service or adjustment unless another person, capable of rendering first aid
and resuscitation, is present.
DO NOT substitute parts or modify equipment: Because of the danger of introducing additional hazards, do not install substitute
parts or perform any unauthorized modification to the product. Return the product to a Hewlett-Packard Sales and Service Office for
service and repair to ensure that safety features are maintained.
WARNING
CAUTION
Documentation History
All Editions and Updates of this manual and their creation date are listed below. The first Edition of the manual is Edition 1. The Edi-
tion number increments by 1 whenever the manual is revised. Updates, which are issued between Editions, contain replacement pages
to correct or add additional information to the current Edition of the manual. Whenever a new Edition is created, it will contain all of
the Update information for the previous Edition. Each new Edition or Update also includes a revised copy of this documentation his-
tory page.
Edition 1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . September 1989
Edition 2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . May 1992
Edition 3 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . February 1994
Edition 4 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . April 1995
Edition 5 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . November 1996
Safety Symbols
6 HP E1328A User’s Manual

Declaration of Conformity
according to ISO/IEC Guide 22 and EN 45014
Manufacturer’s Name: Hewlett-Packard Company
Loveland Manufacturing Center
Manufacturer’s Address: 815 14th Street S.W.
Loveland, Colorado 80537
declares, that the product:
Product Name: 4-Channel D/A Converter Module
Model Number: HP E1328A
Product Options: All
conforms to the following Product Specifications:
Safety: IEC 348:1978/HD 401 S1:1981
CSA 556B
UL 1244
EMC: CISPR 11:1990/EN55011 (1991): Group 1 Class A
EN50082-1:1992
IEC 801-2:1991: 4 kVCD, 8 kVAD
IEC 801-3:1984: 3 V/m
IEC 801-4:1988: 1 kV Power Line, .5 kV Signal Lines
Supplementary Information: The product herewith complies with the requirements of the Low Voltage
Directive 73/23/EEC and the EMC Directive 89/336/EEC (inclusive 93/68/EEC) and carries the "CE" marking
accordingly.
Tested in a typical HP B-Size VXI Mainframe.
Safety qualification performed May, 1989.
European contact: Your local Hewlett-Packard Sales and Service Office or Hewlett-Packard GmbH,
Department HQ-TRE, Herrenberger Straße 130, D-71034 Böblingen, Germany (FAX +49-7031-14-3143).
September 16, 1996 Jim White, QA Manager
HP E1328A User’s Manual 7

Notes
8 HP E1328A User’s Manual

Reader Comment Sheet
HP E1328A User’s Manual
Edition 5
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10 HP E1328A User’sManual

Chapter 1
Getting Started with the HP E1328A
Using This Chapter
This chapter describes the HP E1328A 4-Channel D/A Converter module,
and contains information on how to program it using SCPI (Standard
Commands for Programmable Instruments) commands. This chapter
contains the following sections:
•D/A Converter Description . . . . . . . . . . . . . . . . . . . . . . . . . . Page 11
•Instrument Definition. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Page 12
•Programming the D/A Converter. . . . . . . . . . . . . . . . . . . . . . Page 13
D/A Converter Description
The HP E1328A 4-Channel D/A Converter provides four independent,
16-bit isolated digital-to-analog channels configurable for either DC voltage
or DC current output. Figure 1-1 shows a block diagram for one of the four
HP E1328A channels. All four channels have the same block diagram.
General Description Each of the four channels can be programmed to output voltage or current in
one of the two operating modes.
–Calibrated mode: output voltage range is ±10.922 Vdc and
output current range is ±21.84 mAdc.
–Non-calibrated mode: output range is typically ±12 Vdc
and ±24 mAdc.
Figure 1-1. D/A Converter Block Diagram
Chapter 1 Getting Started with the HP E1328A 11

In the calibrated mode, output accuracy is dependent on the date of the last
electronic adjustment performed (see Appendix A). This accuracy is
maintained by use of stored adjustment constants in memory. Each channel
has independent adjustment constants for both voltage and current, which
are updated by performing the appropriate electronic adjustment procedure
(see Chapter 3).
The electronic adjustment procedures used to update the channel’s stored
voltage and/or current adjustment constant in memory requires only a
multimeter (51⁄2-digit, 0.015% of reading + 1mV accuracy) to complete. If
a system multimeter is used, the electronic adjustment procedures can also
be automated.
The four channels are electrically isolated from each other, and from chassis
ground. This allows the usable output range (voltage and/or current) to be
expanded by linking multiple channels. For example, the output voltage range
can be expanded to 48 Vdc by linking channels in series, and the output current
range can be expanded to 96 mAdc by linking channels in parallel.
Both voltage and current outputs on all channels are provided with output
short circuit protection. Additionally, each channel configured for
outputting voltage has no-fault remote-sensing capability to ensure accurate
voltages at the load. If one of the sense leads become disconnected, the
D/A Converter will automatically revert to local sensing.
The AC FAIL line (from the mainframe) is constantly monitored by the
D/A Converter. If power fails, the D/A Converter channels are shut down
to conserve power and provide greater hold-up time for the mainframe
power supplies.
Instrument Definition
HP plug-in modules installed in an HP mainframe are treated as
independent instruments, each having a unique secondary HP-IB address.
Each instrument is also assigned a dedicated error queue, input and output
buffers, status registers and, if applicable, dedicated mainframe memory
space for readings or data. An instrument may be composed of a single
plug-in module (such as a counter) or multiple plug-in modules (for a
switchbox or scanning voltmeter instrument).
12 Getting Started with the HP E1328A Chapter 1

Programming the D/A Converter
To program the D/A Converter using Standard Commands for Programmable
Instruments (SCPI), you must select the controller language, interface address,
and SCPI commands to be used. See Installing the HP E1300A/E1301A
Mainframe and Plug-In Modules Configuration Guide for interface addressing
and controller language information.
Note This discussion applies to SCPI programming. See Appendix B for details
on register-based programming.
Selecting SCPI
Commands A SCPI command consists of a keyword, such as the source command
[SOURce:]VOLTagen<level>. ndefines the channel to be configured
(for voltage in this case). Most keywords require that you specify the channel
(1, 2, 3, or 4) you want to act on. If no channel is specified, the default is
channel 1.
Some keywords must be followed by a value to set a parameter to a specific
value (for example, voltage level, [SOURce:]VOLTage1 10.00000).
"10.00000" outputs +10.00000 Vdc on channel 1 if properly configured for
voltage. Additionally, some keywords must be followed by a value to set a
parameter to a specific state (for example, calibration on/off CAL:STAT 1).
The "1" sets the D/A Converter channel 1 mode to ON (calibration).
Note Implied commands are those which appear in square brackets ([ ]) in the
command syntax. The brackets are not part of the command and are not
sent to the instrument. [SOURce:] is an implied command and, therefore, is
not required. See page 40 for more information about implied commands.
Chapter 1 Getting Started with the HP E1328A 13

Notes
14 Getting Started with the HP E1328A Chapter 1

Chapter 2
Configuring the HP E1328A
Using This Chapter
This chapter shows how to connect external wiring to the 4-Channel D/A
Converter module inputs, and how to configure the module for voltage and
current output. This chapter contains the following sections:
•Warnings and Cautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Page 15
•Setting the Logical Address Switch. . . . . . . . . . . . . . . . . . . . Page 16
•Selecting Voltage or Current Output. . . . . . . . . . . . . . . . . . . Page 17
•Connecting Field (user) Wiring. . . . . . . . . . . . . . . . . . . . . . . Page 18
Warnings and Cautions
WARNING SHOCK HAZARD. Only service-trained personnel who are aware of
the hazards involved should install, remove, or configure the D/A
Converter module. Before you remove any installed module,
disconnect AC power from the mainframe and field wiring.
CAUTION MAXIMUM VOLTAGE. The maximum voltage that may be applied
between any two terminals within the same channel is 15 Vdc. Do not apply
voltage between any pair of terminals if the D/A Converter is turned off.
STATIC ELECTRICITY. Static electricity is a major cause of component
failure. To prevent damage to the electrical components in the D/A
Converter module, observe anti-static techniques whenever removing a
module from the mainframe or whenever working on a module.
Chapter 2 Configuring the HP E1328A 15

Setting the Logical Address Switch
The address switch (LADDR) factory setting is 72. You may have changed the
setting during module installation. Valid address values are from 0 to 255. If
the D/A Converter module is used in a HP E1300/E1301 Mainframe, refer to
Installing the HP E1300A/E1301A Mainframe and Plug-In Modules
Configuration Guide for addressing information. Otherwise, use Figure 2-1 to
change the setting.
Figure 2-1. Locate and Set the Logical Address Switch
16 Configuring the HP E1328A Chapter 2

Selecting Voltage or Current Output
Each of the four D/A Converter channels is capable of providing either a
voltage or current output. Voltage or current can be selected for each
channel independently. Figure 2-2 shows the jumper location for each
channel and highlights the jumpers for Channel 1. Figure 2-2 also shows
the correct position for the desired output. Note that each channel contains
three jumpers, and that all jumpers for a channel must be changed to the
desired output.
CAUTION Moving the V/I jumpers with power applied to the D/A Converter
could cause improper operation or damage.
Set to Voltage Set to Current
Note:
All three jumpers must be configured
to the same output for any channel.
Figure 2-2. Voltage/Current Output Selection
Chapter 2 Configuring the HP E1328A 17

Connecting Field Wiring
Figure 2-3 shows the input terminals for the D/A Converter output and
sense terminals. Use the following guidelines for wire connections.
Wiring Guidelines •It is recommended that each channel wire be identified (color coded or
marked) as the connection is not visible when the D/A Converter
module is installed.
•Be sure that wires make good connections on the screw terminals.
•Maximum wire size is 16 AWG. Wire ends should be stripped 6 mm
(≈0.234 inch) and tinned to prevent single strands from shorting
adjacent terminals.
•The other end may have any connection the user determines necessary.
•Do not connect the channel’s SENSE terminals if they will not be
used (for example, channel is being configured for a current output,
or a voltage output without remote sensing).
Figure 2-3. D/A Converter Terminals
18 Configuring the HP E1328A Chapter 2

Chapter 3
Using the HP E1328A
Using This Chapter
This chapter uses typical examples to show how to use the 4-Channel D/A
Converter. Refer to Chapter 4, “Understanding the HP E1328A”, for more
information. This chapter contains the following:
•D/A Converter Commands . . . . . . . . . . . . . . . . . . . . . . . . . . Page 19
•Reset Conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Page 19
•Electronic Voltage Adjustment . . . . . . . . . . . . . . . . . . . . . . . Page 20
•Outputting Voltage. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Page 23
•Electronic Current Adjustment . . . . . . . . . . . . . . . . . . . . . . . Page 26
•Outputting Current. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Page 29
D/A Converter Commands
Table 3-1. D/A Converter Commands Used in Chapter 3
Command ** Description
CAL:CURRn z,z,z Used during the current electronic adjustment procedure to update a channel’s stored
adjustment constants in memory.
CALn:STAT ySelects calibrated (ON | 1) or non-calibrated mode (OFF | 0).
CAL:VOLTn z,z,z Used during the voltage electronic adjustment procedure to update a channel’s stored
adjustment constants in memory.
[SOURce:]CURRn xxx Causes the D/A Converter to output a specific current. Channel must be configured for current
output (refer to page 17). Range is dependent on the mode selected.
[SOURce:]VOLTn xxx Causes the D/A Converter to output a specific voltage. Channel must be configured for voltage
output (refer to page 17). Range is dependent on the mode selected.
*RST Sets the hardware and software to a known state.
** n= channel number, xxx = desired value, y= ON (1) or OFF (0), and z,z,z = measured minimum, default (0),
and maximumvalues. [SOURce:] is a command that is implied (not required), but if it is used, delete the brackets
and send as SOURce:.
Reset Conditions
When the D/A Converter is switched on or *RST (reset), all four channels
are set to 0 Vdc/0mAdc output (±100 ms.) and the calibrated mode is
selected for all channels. Refer to Chapter 4 for more information.
Chapter 3 Using the HP E1328A 19

Electronic Voltage Adjustment
The electronic voltage adjustment is used to update the stored voltage
constants for each channel, and should be performed:
–on initial set-up;
–periodically (24 hours or 90 days) to maintain desired output
accuracy (see Appendix A);
–when a ±5°C change in temperature from last adjustment performed
has occurred;
–when the type of load is changed;
–or anytime accuracy is in doubt.
The adjustment procedure is performed for each channel as follows:
1. Configure the desired channel(s) for voltage output (see page 17).
2. Connect the load to the desired D/A Converter channel. Connect a
voltmeter (external or system) to measure voltage at the load.
3. Set the D/A Converter channel to the non-calibrated mode.
Note The electronic adjustment must be performed in the non-calibrated mode
(step 3), or errors in the adjustment constant will occur.
4. Set the channel’s output to minimum (–12 volts). Measure and
record to 51⁄2-digits the actual output at the load.
5. Set the channel’s output to default (0 volts). Measure and record to
51⁄2-digits the actual output at the load.
6. Set the channel’s output to maximum (+12 volts). Measure and
record to 51⁄2-digits the actual output at the load.
7. Record minimum, default, and maximum values and send them to the
module as arguments of the CALibration command. New adjustment
constants will be automatically calculated and stored from the
entered measurement values.
8. Repeat steps 2 through 7 for all desired channels.
20 Using the HP E1328A Chapter 3
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