HP HP E1346A User manual

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Contents
HP E1346A Relay Multiplexer User’s Manual
Warranty . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
WARNINGS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Safety Symbols . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Declaration of Conformity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Reader Comment Sheet . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
1. Getting Started with the HP E1346A . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Using This Chapter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Instrument Definition . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Multiplexer Module Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
General Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Multiplexer Channel Descriptions and Connections . . . . . . . . . . . . . . . . . 12
Programming the Multiplexer Module . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Selecting Channels . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
SCPI Command Format Used in This Manual . . . . . . . . . . . . . . . . . . . 16
Initial Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
2. Configuring the HP E1346A Multiplexer Module . . . . . . . . . . . . . . . . . . . . . . . 17
Using This Chapter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Warnings and Cautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Connecting Field Wiring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Wiring Guidelines . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Wiring a Terminal Block . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Connecting User Inputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
Connecting the Analog Bus . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Setting the Address Switch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Removing the Low-to-Guard Isolation Jumper . . . . . . . . . . . . . . . . . . . . . . 21
Selecting the Interrupt Priority . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
3. Using the HP E1346A Multiplexer Module . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
Using This Chapter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
Multiplexer Commands . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
Connecting Channels to Common for Making Measurements . . . . . . . . . . . . . . 26
Example: Connect Channel 02 to Common for Voltage Measurement . . . . . . 26
Example: Connect Channel 02 to the DT Tree Switch Terminals for an Ohms
Measurement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
Comments . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
Scanning a Range of Switchbox Channels . . . . . . . . . . . . . . . . . . . . . . . . 29
Example: Making Voltage Measurements by Scanning . . . . . . . . . . . . . . . 29
Example: Making 2-Wire Ohms Measurements by Scanning . . . . . . . . . . . . 31
Example: Making Multiple Scans . . . . . . . . . . . . . . . . . . . . . . . . . . 31
Example: Making Continuous Scans . . . . . . . . . . . . . . . . . . . . . . . . . 31
Comments . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
HP E1346A Relay Multiplexer User’s Manual Contents 1
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4. Understanding the HP E1346A Multiplexer . . . . . . . . . . . . . . . . . . . . . . . . . . 33
Using This Chapter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
Commands for Scanning Switchbox Channels . . . . . . . . . . . . . . . . . . . . . . 33
Using Scanning Trigger Sources . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
Scanning with External Instruments . . . . . . . . . . . . . . . . . . . . . . . . . 33
Example: Scanning With External Devices . . . . . . . . . . . . . . . . . . . . . 36
Example: Scanning Using "Trig Out" and "Event In" Ports . . . . . . . . . . . . . 37
Using the Scan Complete Bit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38
Example: Scan Complete Interrupt . . . . . . . . . . . . . . . . . . . . . . . . . . 38
5. HP E1346A Multiplexer 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
ABORt . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42
ARM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43
:COUNt . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43
:COUNt? . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43
DISPlay . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44
MONitor[:STATe] . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44
MONitor:CARD . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45
INITiate . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46
:CONTinuous . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46
:CONTinuous? . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47
[:IMMediate] . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47
OUTPut . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48
[:STATe] . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48
:STATe? . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48
[ROUTe:] . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49
CLOSe . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49
CLOSe? . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50
OPEN . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50
OPEN? . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50
SCAN . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51
SCAN:MODE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52
SCAN:MODE? . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53
STATus . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54
:OPERation[:EVENt]? . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54
:OPERation:ENABle . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54
SYSTem . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55
:ERRor? . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55
:CDEScription? . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55
:CTYPe? . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56
:CPON . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56
TRIGger . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57
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[:IMMediate] . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57
:SOURce . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57
:SOURce? . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58
IEEE 488.2 Common Commands . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59
Command Quick Reference . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60
A. HP E1346A Multiplexer Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61
Relay Life . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 62
End-of-Life Detection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 62
Replacement Strategy . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 62
B. HP E1346A Multiplexer Registers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 63
Register Definitions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 63
Register Addressing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 63
Computer Configurations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 64
Reading the Registers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 67
ID and Device Type Registers . . . . . . . . . . . . . . . . . . . . . . . . . . . . 67
Writing to the Registers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 68
C. HP E1346A Multiplexer Error Messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . 71
HP E1346A Relay Multiplexer User’s Manual Contents 3
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Notes
4 HP E1346A Relay Multiplexer User’s Manual Contents
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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 Tech-
nology (formerly National Bureau of Standards), to the extentallowed 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 productswhich
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 applyt o 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.
Restricted Rights Legend
Use, duplication or disclosure by the U.S. Government is subject to restrictions as set forth in subparagraph (c)(1)(ii) of the Rights in
Technical Data and Computer Software clause in DFARS 252.227-7013.
Hewlett-Packard Company
3000 Hanover Street
Palo Alto, California 94304 U.S.A.
Rights for non-DOD U.S. Government Departments and Agencies are as set forth in FAR 52.227-19 (c) (1,2).
HP E1346A 48 Channel Single-Ended Relay Multiplexer Module User’s Manual
Edition 4
Copyright © 1995 Hewlett-Packard Company. All Rights Reserved.
HP E1346A 48 Channel Single-Ended Relay Multiplexer Module User’s Manual 5
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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
Update 1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . September, 1990
Edition 2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . December, 1992
Edition 3 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . November, 1993
Edition 4 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . April, 1995
Safety Symbols
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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: 48 Channel Single-Ended Relay Multiplexer Module
Model Number: E1346A
Product Options: All
conforms to the following Product Specifications:
Safety: IEC 1010-1 (1990) Incl. Amend 1 (1992)/EN61010-1 (1993)
CSA C22.2 #1010.1 (1992)
UL 1244
EMC: CISPR 11:1990/EN55011 (1991): Group1 Class A
IEC 801-2:1991/EN50082-1 (1992): 4kVCD, 8kVAD
IEC 801-3:1984/EN50082-1 (1992): 3 V/m
IEC 801-4:1988/EN50082-1 (1992): 1kV Power Line
.5kV 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 and carries the CE-marking accordingly.
Tested in a typical configuration in an HP B-Size VXI mainframe.
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 [phone]).
April, 1995 Jim White, QA Manager
HP E1346A 48 Channel Single-Ended Relay Multiplexer Module User’s Manual 7
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Notes
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Reader Comment Sheet
HP E1346A 48 Channel Single-Ended Relay Multiplexer Module User’s Manual
Edition 4
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Chapter 1
Getting Started with the HP E1346A
Using This Chapter
This chapter describes the HP E1346A 48-Channel Single Ended Relay
Multiplexer Module, and shows how to program the module using SCPI
(Standard Commands for Programmable Instruments) commands. This
chapter contains the following sections:
•Multiplexer Module Description . . . . . . . . . . . . . . . . . . . . . . Page 11
•Programming the Multiplexer Module . . . . . . . . . . . . . . . . . Page 13
•Initial Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Page 16
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).
Multiplexer Module Description
Refer to Figure 1-1 for the following explanations of the 48-Channel Single
Ended Relay Multiplexer Module.
General Description The multiplexer module provides switching (multiplexing) of up to 48
channels (i.e., channels 00 to 47). Each channel switches only a High (H)
connection. The Low (L) and Guard (G) connections are common for each
channel. The multiplexer module can only close one channel at a time.
The multiplexer module consists of a component assembly and a terminal
block. The channel relay switches are on the component assembly. The
field wiring from user sources connect to the terminal block. The terminal
block also provides connections for multimeters, voltmeters, counters, and
other measuring devices.
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Multiplexer
Channel
Descriptions and
Connections
The channel switches connect, through the AT, BT, and CT Tree Switches,
to the Common Terminals. Closing a channel using SCPI automatically
closes the appropriate tree switch for connections. For example, a channel
00 closure automatically closes the AT Tree Switch. To close the tree
switches using register programming, use channel number 90, 91, or 92 for
the AT, BT, or CT Tree Switches, respectively.
The multiplexer also has an additional tree switch called the DT Tree
Switch. It connects the DT Tree Switch Terminals, when closed, to any
channel. Use this tree switch for ohms measurements. This connects the
ohms current source to the channels inside the module. Use channel
number 93 to select this tree switch.
Figure 1-1. Multiplexer Module Block Diagram
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The Common Terminals also connect to the H, L, and G connections on the
Analog Bus Connector. The DT Tree Switch Terminals also connect to the
I+, I-, and IG connections on the Analog Bus Connector. The Analog Bus
Connector provides direct channel connections between multiple
multiplexer modules, and connections between a multiplexer module and
the HP E1326/
E1411 Multimeter. Cables make the necessary connections without the
need to externally wire the multimeter/multiplexer module to the terminal
module.
Each Common and DT Tree Switch lines have a 100 Ωresistor in series
with each line. The resistors provide relay protection and are located on the
component module. The Analog Bus lines have jumpers in series that you
may remove to isolate the analog bus from the multiplexer module. The
Low (L) and Guard (G) commons are normally connected to each other
through isolation jumper JM1 (see Chapter 2). Remove the jumper to
minimize errors caused by lead resistance in the low lines. The jumper is
located on the component assembly.
Programming the Multiplexer Module
The multiplexer module is programmed either in a switchbox or scanning
voltmeter configuration. To program the multiplexer module using Standard
Commands for Programmable Instruments (SCPI), you must select the
controller language, interface address, and SCPI commands to be used. See
the "HP 75000 Series B Installation and Getting Started Guide" or the "HP
E1405/E1406 Command Module Manual" for interface addressing and
controller language information of multiplexer modules in a switchbox or
scanning voltmeter configuration.
Note This discussion applies to SCPI programming. See Appendix B
(48-Channel Relay Multiplexer Registers) for details on multiplexer module
registers.
Selecting Channels To address specific channels within a multiplexer module in a switchbox or
scanning voltmeter configuration, you must:
•send the appropriate SCPI command string to the switchbox or
scanning voltmeter (e.g., CLOSe, OPEN, etc.)
•specify the card number
•specify the channel number
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Multiplexer Card
Numbers The card number identifies the module within a switchbox or scanning
voltmeter configuration. The switchmodule with the lowestlogical address
is always card number 01. The card number with the next successive
logical address is 02, and so on. Figure 1-2 illustrates the card number and
logical address of a typical single module switchbox. Figure 1-3 illustrates
the card numbers and logical addresses of a typical multiple module
switchbox. Figure 1-4 illustrates the card numbers of a typical multiple
module scanning voltmeter.
Figure 1-2. Card Numbers for Single Module Switchboxes
Figure 1-3. Card Numbers for Multiple Module Switchboxes
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The logical addresses noted in Figures 1-2, 1-3, and 1-4 apply to modules
installed in an HP 75000 Series B Mainframe (HP Model Number E1300/
E1301) or in a mainframe with an HP E1405/E1406 Command Module.
See the "HP 75000 Series B Installation and Getting Started Guide" or the
"HP E1406 Command Module Manual" for more information on
switchboxes and scanning voltmeter configurations, and logical addressing.
For uses in other systems or mainframes, see the appropriate manuals.
Multiplexer Channel
Address For the 48-Channel Multiplexer, the channel address (channel_list) is in the
form:
•(@ccnn) for a single channel
•(@ccnn,ccnn) for multiple channels
•(@ccnn:ccnn) for sequential channels
•(@ccnn:ccnn,ccnn:ccnn) for groups of sequential channels
•or any combination of the above
where "cc" is the card number and "nn" is the channel number.
For example, the command string to close channel 02 of card number 1 is:
CLOSe (@0102)
Since "cc" (the card number) must be sent, it becomes part of the channel
number. Also, you can ignore leading zeros in the card numbers. Thus, to
close channel 02, send "102" instead of "0102". To close the above channel,
execute:
CLOSe (@102)
Figure 1-4. Card Numbers for Multiple Module Scanning Voltmeter
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SCPI Command
Format Used in
This Manual
You can send SCPI commands in either a short or long form. A long form
example is:
CLOSe (@102)
The same command shown without the lower case letters is the short form.
The command then becomes:
CLOS (@102)
Some commands in this manual are shown with brackets ([ ]). These are
implied or optional commands that you do not have to execute. For
example, the ROUT command is an implied command and is shown in this
manual as:
[ROUT:]CLOS (@102)
Thus, to execute these commands, simply enter:
CLOS (@102)
See Chapter 5 for more explanation about SCPI commands and how to send
them.
Initial Operation
Use the following program example to verify initial multiplexer operation
by closing a channel and querying channel closure. The example first resets
the switchbox and then closes channel 02 of a single multiplexer module
(card number 1) in the switchbox. The program next queries the channel
closure state. A returned "1" shows that the command to close the channel
has been sent to the switchbox. A returned "0" shows that the command to
close the channel has not been sent to the switchbox.
The computer used in the example is an HP Series 200/300 computer with
HP BASIC as the program language. The computer interfaces to the
mainframe using the Hewlett-Packard Interface Bus (HP-IB)*. The HP-IB
interface select code is 7, the HP-IB primary address is 09, and the HP-IB
secondary address is 14. Refer to the "HP 75000 Series B Installation and
Getting Started Guide" for addressing information.
Example: Reset the switchbox and close channel 02
10 OUTPUT 70914;"*RST" Opens all channels
20 OUTPUT 70914;"CLOS (@102)" Close channel 02
30 OUTPUT 70914;"CLOS? (@102)" Query channel 02 state
40 ENTER 70914;Value Enter results into Value
50 PRINT Value Display result
60 END
16 Getting Started with the HP E1346A Chapter 1
*HP-IB is Hewlett-Packard’s implementation of IEEE Std 488.1-1984
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Chapter 2
Configuring the HP E1346A Multiplexer
Module
Using This Chapter
This chapter shows how to connect external wiring to the 48-Channel
Single Ended Relay Multiplexer Module, and how to configure the module.
This chapter contains the following sections:
•Warnings and Cautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Page 17
•Connecting Field (user) Wiring. . . . . . . . . . . . . . . . . . . . . . . Page 18
•Wiring a Terminal Block . . . . . . . . . . . . . . . . . . . . . . . . . . . . Page 19
•Connecting the Analog Bus . . . . . . . . . . . . . . . . . . . . . . . . . . Page 21
•Setting the Address Switch . . . . . . . . . . . . . . . . . . . . . . . . . . Page 21
•Removing the Low-to-Guard Isolation Jumper. . . . . . . . . . . Page 21
•Selecting the Interrupt Priority . . . . . . . . . . . . . . . . . . . . . . . Page 23
Warnings and Cautions
Warning SHOCK HAZARD. Only service-trained personnel who are
aware of the hazards involved should install, remove, or
configure the multiplexer module. Before you install any
module, disconnect AC power from the mainframe and from
user wiring. To prevent electrical shock, all wires to the channel
connections must be insulated to at least 120 V rms (170 V
peak).
Caution MAXIMUM VOLTAGE/CURRENT. The maximum voltage that
may be applied between High (H), Low (L), and Guard (G)
terminals is 170 V dc or 120 V rms (170 V peak). The maximum
current is 50 mA (non-conductive) per channel.
STATIC ELECTRICITY. Static electricity is a major cause of
component failure. To prevent damage to the electrical components in the
multiplexer module, observe anti-static techniques whenever removing a
module from the mainframe or whenever working on a module.
Chapter 2 Configuring the HP E1346A Multiplexer Module 17
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Connecting Field Wiring
Figure 2-1 shows the terminal block for the 48-Channel Single Ended Relay
Multiplexer Module (HP E1346A). Use the following guidelines for wire
connections.
Wiring Guidelines •If possible, use shielded cables with the shields connected to the
Guard (G) terminals and to the low connection near the measurement
point.
•Be sure the wires make good connections on the screw terminals.
Figure 2-1. Multiplexer Module Terminal Block
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Wiring a Terminal Block
Chapter 2 Configuring the HP E1346A Multiplexer Module 19
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