HP E1472A/73A/74A/75A User’s Manual Contents
Warranty . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
WARNINGS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Safety Symbols . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Declaration of Conformity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Manual Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Manual Content . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Suggested Sequen ce to Use This Manual . . . . . . . . . . . . . . . . . . . . . . . . . 7
Chapter 1: Getting Started
RF Multiplexer Descr ip ti on . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
General Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Basic Operati on . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Typical Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Instrument Definition . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Programming the RF Multiplexer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Specifying SCPI Commands . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
RF Multiplexer Ch an nel Addresses . . . . . . . . . . . . . . . . . . . . . . . . . . 12
RF Multiplexer Card Numbers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Module Number . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Channel Number . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
SCPI Command F ormat Used in Th is Ma nua l . . . . . . . . . . . . . . . . . . . . 14
Initial Opera ti on . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Chapter 2: Configuring the RF Multiplexer Mod ules
Warnings and Cautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Setting the Address S witch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Selecting the Interrupt Pri ori ty . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Expanding the RF Multiplexer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
Selecting the Rela y Drive Lev el . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
Connectin g U ser Inputs To E14 72A/73A . . . . . . . . . . . . . . . . . . . . . . . . . 23
Cabling Guidelines . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
Connectin g U ser Inputs To E14 74A/75A . . . . . . . . . . . . . . . . . . . . . . . . . 24
Cabling Guidelines . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
Example 1: Connection to a Network Analyzer . . . . . . . . . . . . . . . . . . . . 25
Example 2: Connection to a Network Analyzer . . . . . . . . . . . . . . . . . . . . 26
Cables and Connectors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
Chapter 3: Using the RF Multiplexer
RF Multiplexer Commands . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
Reset Conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
Switching Channels . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
Example: Standard Switching . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
Examp le: T r ee Switchi ng . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
Examp le: Matrix-Typ e Switching . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
HP E1472A/73A/74A/75A User’s Manual Contents - 1
Recalling and Savi ng States . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
Storing Sta t e s . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
Recalling State s . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
Detecting Error Conditi ons . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
Checking for Errors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
Synchronizing t he RF Multipl exer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
Synchronizing Instruments . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
Querying the RF Multiplexer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
Chapter 4: RF Multiple xe r Com mand Refe re nce
Command Types . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
Common Command Format . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
SCPI Command F ormat . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
SCPI Command Reference . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42
Subsystem Syntax . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42
Common Command Reference . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48
Chapter A: Spec if ic ati ons
50-Ohm RF Multiplexer Spe cifi ca tions . . . . . . . . . . . . . . . . . . . . . . . . . 51
INPUT CHARACTERISTICS . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51
AC PERFORMANCE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51
DC PERFORMANCE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51
GENERAL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51
75-Ohm RF Mult iplexer Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . 52
INPUT CHARACTERISTICS . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52
AC PERFORMANCE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52
DC PERFORMANCE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52
GENERAL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52
Relay Life . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53
End-of-Life Detection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53
Replacement Strategy . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53
Chapter B: RF Multiple xer Regi ste rs
Address ing the Reg isters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55
Reading the Re gisters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56
ID and Device T ype Register s . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56
Status/C ont rol Register . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56
Remote M odule ID Registers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57
Channel Enable Registers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57
Writing to the Registers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57
Status/C ont rol Regi ster . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57
Channel Enable Registers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58
Selecting Channels Using Your Own Relays . . . . . . . . . . . . . . . . . . . . . . . . 61
Example: U sing the Register and Pin-out Maps . . . . . . . . . . . . . . . . . . . . 63
Chapter C: R F Mult ipl exer Error Messages
Contents - 2 HP E1472A/73A/74A/75A User’s Manual
Certification
Hewlett-Packard Company certifies that this product met its publ i sh ed speci fica t ions a t the time of shipme nt from the fact or y. Hewl ett Packard further certifi es that its calibrat ion mea sureme nt s are tracea ble to the Unit ed Sta tes Na tion al Institut e of Standards and Technology (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 Hewlet t-Pa ck ar d product is warr ante d agai nst de fect s in mate rials and w orkmansh ip for a period of three years from date of shipment. Duration and conditions of warranty f or this pr oduct ma y be super seded when the product is integrat ed into (become s a part of)
other HP product s. Du ring the warrant y period, He wlett-Packard Company will, at its option, either repair or replace pr oducts which
prove to be defective.
For warranty se r vice or repair, this product mu st be r etur ned to a service facil ity de si gnated by Hewlett-P ackard (HP). Buyer sha l l prepay shipping cha rges to HP and HP shall pay shipping charges to retu rn the product to Buyer. However, Buyer shall p ay all shipping
charges, duties, and taxe s for products returned to HP from anot her count r y.
HP warrants that its softwar e and firmwar e designa ted b y HP for use with a product will execute its programmin g instru cti ons wh en
properly installe d on that product. HP does not warrant that the operat ion of the product, or software , or firmware will be uninterrupted
or er ro r f r ee.
Limitation Of Warrant y
The foreg oin g warra nt y sh al l not apply t o defects resulting from impr oper or inadequate mai nt enance by Buyer, Buyer-supplied products or interfacing, unauthori ze d m odificati on or misus e, operation outside of the environmenta l specificat i ons for the product, or improper site prep arat i on or maint ena nce.
The design and imp le mentation of an y circuit on thi s product is the sole responsibil ity of the Buyer. HP does not warrant th e Buyer’s
circuitr y or malfunctions of HP products that result from the Bu yer’s circuitry. In addition, HP d oes not warrant an y damage tha t occurs as a result of the B uyer’s circuit or any defects that resul t from Buyer-supplied products.
NO OTHER WARRANTY IS EXPRESSED OR IMPLIED. HP SPECIFICALLY DISCLAIMS THE IMPLIED WARR ANTIES OF
MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
Exclusive Remedie s
THE REMED IES 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 CONTRACT, TORT, OR ANY OTHER LEGAL THEORY.
Notice
The information contained in this document is subject to change without notice. HEWLETT-PACKARD (HP) MAKES NO WARRANTY OF ANY KIND W ITH REGARD TO THIS MATERIAL, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 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 document c ontains proprietary information which is protected by copyright. All righ ts ar e re served. No part o f this document may be photocopied, reproduced, or translate d to another lan guage wit h out the prior written consent of Hewlett -Packar d C ompany. 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 Do cumentat ion have been devel ope d entir ely at privat e expe nse. The y are delivere d and licens ed as " comme rci al
computer software" as defined in DF ARS 252. 227-7013 (Oct 19 88), DF ARS 252.211 -7015 (Ma y 1991) or DFARS 252. 22 7 -7 014
(Jun 1995), as a "commercial item" as defined in FAR 2.101(a), or as "Restrict ed c ompute r so ftwar e" as defi ned in FAR 52.2 27-19 (Jun
1987) (or any equivalent agency regulation or contract cl ause), whi cheve r is applicable. You have onl y those rights provided f or such So ftware and Documentation by the applicable FAR or DFARS clause or the H P s tanda rd software agreement for the product involved.
HP E1472A, E1473 A, E1474A, E1475A 50- & 75-Ohm RF Multiplexers/Expanders User’s Manual
Copyright © 1992 He wle tt-Pa cka rd Company. All Right s Reser ve d.
Edition 2
HP E1472A/73A/74A/75A User’s Manual 3
Documentatio n 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 Edition number increment s by 1 whenever the manua l is revised . Updates , which are issued betw een Edi ti ons, c ontain repla ce ment pa ges
to correct or add additional information to the current Edition of the manual. Whenever a new Edition is created, it wil l contain all of
the Update inf ormat ion for the pre viou s Editi on. Each new Ed iti on or Update also incl ude s a revis ed c op y of this documentation history page.
Edition 1 (Part Number E1472-90001). . . . . . . . . . . . . . . . . . . . . . January 1990
Edition 1 (Part Number E1474-90001). . . . . . . . . . . . . . . . . . . . . . October 1991
Edition 2 (Part Number E1472-90002). . . . . . . . . . . . . . . . . . . . November 1992
Safety Symbols
Instruction manual symbol affixed to product. Indicat es that the user must refer to the
manual for specific WARNING or CAUTION information to avoid personal injury
or damage to the product.
Indicates the field wiring terminal that must
be connected to earth ground before operating the equipment—protects against electrical shock in case of fault.
Frame or chassis ground termi nal — t ypi-
or
cally connects to the equipment’s metal
frame.
WARNING
CAUTION
Alternating current (AC).
Direct curren t (DC).
Indicate s ha za rdous voltages.
Calls at te nt i on t o a pr ocedure, practice, or
condition that could cause bodily injury or
death.
Calls at te nt i on t o a pr ocedure, practice, or condition that could possibly cause damage to
equipme nt or perma nen t los s of data.
WARNINGS
The following ge ner al safet y prec aut ions mus t be observed du ring al l phas es of oper ation , ser vice , and repai r of this pr oduct.
Failure to comply with these precautions or with specific warnings elsewhere in this manual violates safety standards of design,
manufacture, and inten ded use of the product. Hewlett-Packard Company assumes no liability for the custo mer’s failu re to
comply with these requirements.
Ground the equipment: For Safety Cl as s 1 equipmen t (equ ipment ha vin g a protective ea rth ter mi nal) , an unint erru ptib le sa fety earth
ground must be provide d from the ma in s power sour ce to the produ ct input wi rin g termi nals or suppli ed power cable .
DO NOT operate the produc t in an explosive at mospher e or in the presen ce of flammable gases or fume s.
For continued protect ion a gainst fire, repl ace the line fuse (s) only with fuse(s) of the same voltage and current rating and type.
DO NOT use repaired fuses or short-circui ted fuse holders.
Keep away from live circuits: Operatin g 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, danger ous v oltage s m ay exist even with the
equipment switched off. To avoid dangerous ele ctrical shock , DO NOT perf orm procedures involving cover or shield removal unless
you are qualified to do so.
DO NOT operate damaged equipment: Whene ver it i s p ossibl e tha t the sa fe ty protection features buil t into t hi s product have been impaired, eithe r t hr ough physical damage, excessive moisture , or any other reason, REM OVE POWER and do not use the product until
safe operation can be verified by service-tra ined personn el. If necessary, return the produ ct to a Hewlett-P ackar d Sale s and Ser vice Office for service and repair to ensure that safety features are maintained.
DO NOT service or adjust alon e: 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 modifica tion to the product. Retur n the product to a Hewlet t-P ackar d Sales and Ser vice O ffice for
service and repair to ensure that sa fe ty features are mai nt ai ned.
4 HP E1472A/73A/74A /75A User’s Manual
Declaration of Conformity
according to ISO/IEC Guide 22 and EN 45014
Manufacturer ’s Na me: Hewlett-Pa ckar d C ompany
Loveland Manufacturing Center
Manufactu rer ’s Address: 815 14th Street S.W.
Loveland, Colorado 80537
declares, that the product:
Product Name: Six 1x4, 50- and 75-Oh m RF Multipl exer and Expa nder
Model Number(s): HP E1472A/E1473A/E1474A/E1475A
Product Opti ons: All
conforms to the foll ow in g Product Specifications:
Safet y: IEC 348:1978 /HD 401 S1:1 981
CSA 556B
UL 1244
EMC: CISPR 11:1990/EN55011 (1991): Group1 Class A
EN50082-1: 1992
IEC 801-2:1991: 4kVCD, 8kVAD
IEC 801-3:1984: 3 V/m
IEC 801-4:1988: 1kV Po wer Line, 0. 5k V Signa l Line s
Supplementary Information: The pr oduct herewith complies w ith th e req uirements of the Low Voltage Directive
73/23/EEC and the EMC Directive 8 9/336/ EEC and carries th e "CE" markin g accordingly.
Safet y qualifica tion per formed May, 1989.
Tested in a typical HP B-size VXI configuration.
September 5, 1996 Jim White, QA Manager
European conta ct: Your loca l He wlett-Pa cka rd Sales a nd Servi ce O ffic e or Hewlett- Packa rd GmbH, Departm ent
HQ-TRE, Herr en ber ger Straße 130, D- 71034 Böblingen, Germa ny (FAX +49-7031-143143).
HP E1472A/73A/74A/75A User’s Manual 5
Notes
6 HP E1472A/73A/74A /75A User’s Manual
How to Use this Manual
1
Manual Overview This manual sho ws how to operate, c onfigure, and progra m the HP E1472A
50 Ω RF Multiplexer, E1473A 50 Ω RF Multiplexer Expander, E1474A
75 Ω RF Mul ti plexer, and E1475A 7 5 Ω RF Mult iplexer Expander modules.
Except where noted , the term “RF Multiplexer” refers to the HP E1472A
50 Ω RF Multiplexer and E147 4A 75 Ω RF Multip lexer M odules. The term
“Expander” refers to the HP E1473A 50 Ω RF Multiplexer Expander, and E1475A
75 Ω RF Multiplexer Expander Modules.
The RF Multiplexer is a VXIbus C-Size register - ba s ed slave device, and can oper at e
in a C-size VXIbus mainframe using an HP Command Module such as the HP
E1405 or HP E1406. For oth er ma nufacturers’ mainfra mes, refer to the applicabl e
manual supplied b y the manufacturer.
Most information in this manua l appl ies to RF Multiplexer oper ati ons in an HP
75000 Series C S ystem Comma nd M odule. The Standard Comma nd s for
Programmabl e Instrument s (SCPI) is used as the programming langu age. F or
non-SCPI program ming , refer to Appendi x B for regist er- based progra mmi ng.
1
Manual Cont ent This manual has fou r chap ter s and th re e append ixes.
• Chapters 1 and 2 provide RF Multiplexer a nd Expand er descript ions and
configurations, and Chapter 3 shows several ways to use the RF
Multiplexer and the Expander . For basic opera tions usi ng SCPI, use
thes e ch apters. For register programmin g use Chap ters 1 and 2, and
append ix B.
• Chapter 4 describes SCPI commands.
• Appendix A lists the RF Multiplexer specifications and provides
informati on about relays, Appendix B has register based program ming information, and Appen dix C lists error codes and messages.
1
Suggested
Sequence to Use
BASIC OPERATIONS/
CONFIGURATION
This Manual
SCPI
Programming
CHAPTER 1
CHAPTER 2
CHAPTER 3
ADVANCED/REFERENCE
INFORMATION
CHAPTER 4
Register
Programming
CHAPTER 1
CHAPTER 2
APPENDIX
B
HP E1472A/73A/74A/75A User’s Manual 7
Notes
8 HP E1472A/73A/74A/75A User’s Manual
Getting Started
Using This Chapter This chapter descr ibe s the RF Multi plexer and Expa nd er modules, and conta ins
information on how to program them using SCPI (Standard Comm a nds for
Programmable Instruments) commands. This chapter contains the following
sections:
• RF Multiplexer Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Page 9
• Ins trumen t Definition . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Page 11
• Programm in g the RF Multiplexer . . . . . . . . . . . . . . . . . . . . . . . . . Page 11
• Initial Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Page 15
1
1
RF Multiplexer
Descriptio n
Refer to Figure 1- 1 for t he following explanation of the 50 Oh m and 75 Ohm RF
Multiplexer and 50 Ohm and 75 Ohm RF Multipl ex er Expan der modul es.
General Description The RF Multiplexer (6 x 4:1) and the Expand er (6 x 4:1) modules are VXIbus
C-Size register- ba s ed products w hich provi de bidirecti onal s witchi ng for user inputs
and outputs. Switching consists of connecting one cha nn el to comm on in that bank .
The RF Multiplexer can operate in a C-Size VXIbus mainframe using an HP
Control Module such as an HP E1 405 or HP E140 6.
Up to two Expander m odu les can be c ontrol led by a single RF Mult ip lexer module,
providing a total of eighteen (4:1) multiplexer banks. These Expander modules can
either be inser t ed into the C-Size mainframe next to the RF Mul ti pl ex er, or can be
located up to eight meter s from t he RF Mu ltipl exer using the remote expander
cables. Locating the Expander module close to the external device keeps
connecting cable lengths to a minimum, thereby reducing the possibility of
cross-talk and inserti on loss of high frequ en cy signal s.
You may connect either HP E1475A 75 Ohm Expander Rel a y Modules or
the HP E1473A 50 Ohm Exp ander Rela y M odules t o the HP E1472A or
HP E1474A Multipl exer module. The drivers on both modu les can supp ort eith er
of the expander relay modules.
Basic Operation The RF Mult iplexer module and each Exp ander module consists of si x ba nks of
channels (ban k 0 through bank 5) to form six 4:1 multip lexer s. The s witch ing
sections of the RF Mul tipl ex er and Expan der modules a re iden t ica l. See Figure 1-1
for a simplified switchin g diagr am. Banks are arrang ed as foll o ws:
• Bank 0 includes channels 00 through 03 and Com 00.
• Bank 1 includes channels 10 through 13 and Com 10.
• Bank 2 includes channels 20 through 23 and Com 20.
• Bank 3 includes channels 30 through 33 and Com 30.
• Bank 4 includes channels 40 through 43 and Com 40.
• Bank 5 includes channels 50 through 53 and Com 50.
Chapter 1 Getting Started 9
RF MUX
Note: Duri ng Power off, Power Up, and Reset,
Channel 0 is connected to COM on Each Bank.
Figure 1-1. Multipl exer/Exp an der Swi tch ing Diagram
10 Getting Started Chapter 1
In the remainder of this manua l, chan nels are r ef erred t o as n0 through n3 and Com
n0, where n is the ba nk number (0 through 5). Ea ch ch annel is switched ( c onnected
to its common) by closin g the appropri ate ( nonla tchi ng) rel a ys. Channels n0
through n3 can b e s witched to Com n0 for all banks. Only one channel in each
bank can be conne cted to its common at a time.
User inputs/outputs t o ea ch cha n nel are via SMB connectors. When a channel is
CLOSed, it is internally connected to the COMmon connector. When a channel is
open, it is internally disconnected. Open chan nels are not terminated. At
power-off, p ower-on, or reset, channel n0 i s s witched t o the COM n0 connector,
and all other channel s (n1 throug h n3) are open (non -t ermi nated) f or all banks.
Typical Configuration The RF Multiplexer and Expander relays are con figured in a “tree” structure which
provides high isolation and low VSWR (voltage standing wave ratio). Each
channel can switch user inputs up to 24 watts (42 V peak). User input frequencies
to the 50 Ω RF Multip lexer and Expa nder modu les ca n be from DC to 3 G Hz. User
input frequencies to the 75 Ω RF Multip lexer and Expander modules can be from
DC to 1.3 GHz. The RF Multiplex er can be confi gured for sev eral arra ngem en ts,
such as standard, tree, or matri x (see Chapter 3 for more information).
For a SCPI (Standard C ommands for Progra m mable Inst rum en ts) environm en t, one
or more RF Multiplexers ( with or without Expanders c onnected) can be de fined as a
switchbox instr um en t. For a switchbox instrum en t , all RF Multip lexer cha nnel s
within the instrument can be addressed using a single interface address.
1
Instrument
Definition
1
Programmin g the
RF Multiplexer
HP plug-in modules i nsta lled in an HP mainfr ame or used with an HP comma nd
module are trea t ed as indepen den t instrum en ts ea ch having a unique s e condary
HP-IB address. Each instrum ent is also assigned a dedica ted er ror queue, i nput an d
output bu ff ers, status registers and, if applicable, dedicated ma in frame/
command mod ule memory space for readings or dat a . An in str ument may be
composed of a single plu g-i n module (such as a counter) or multiple p lug -in
modules (for a Switchbox or Scanning Voltmeter Instru men t ).
To program the RF Mu ltipl exer using SCPI, you must select the con tr oll er
langua ge, i nter face ad dress, and SCPI commands to be used. Guidelines to select
SCPI comman ds for t he RF Mu ltipl exer follow. Refer to your specific
HP Control Module Manual for interface addressin g and contr oller langu age
information.
Chapter 1 Getting Started 11
Note
This discussion appl ies to SCPI progra mming . See Appendix B (RF Mult iple xer
Register s ) for de tails on RF Mul ti pl exe r reg ist ers.
Specifying SCPI
Commands
RF Multiplexer
Channel Addresses
RF Multiplexer Card
Numbers
Note
To address specific channels within an RF Multiplexer, you must specify the SCPI
command and RF Mult iplexer channel address. For the RF Multiplexer, use
CLOSe (channel_list) to switch (c onne ct) channels.
For the RF Multiplexer, the channel address (channel_list) has the form
(@ccmmnn) wher e cc = RF Multiplexer card num ber (01-99), mm=RF
Multiplexer/ E xpa nder modu le num ber (00-02) , and nn = cha nnel nu mb er
(00-03,10 -13,20-23,30 -33, 40-43, or 50- 53). Use the f orm:
• (@ccmmnn) for a single cha nnel
• (@ccmmnn,ccmmnn) for multip le ch annels
The RF Multiplexer card num ber depends on the switchb ox c onfiguration
(single-modul e or mul tipl e- module) set for the RF Multiplex ers. (Leading zeroes
can be ignored for the card number.)
The Expander modul e (s) card number is the same as th e RF Multi plex er it is
connec te d to .
• Single-modu le. For a single-mod ule switchbox, the card numb er is always
01.
• Multiple-module. For a mult ip le-module s witch box, th e RF Multiplexer
module with the lowest logical 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 numbers and logical addresses of a typical
multiple-modu le switchbox.
The logical addresses n oted i n Figure 1 -2 appl ies to RF Multipl ex ers inst alled i n an
HP 75000 Series C Mainframe w ith an HP Command M odule. See your specifi c
“HP Command Module Manual” for more information on switchboxes and logical
addressing. For uses in other systems or mainframes, see the a ppropr i ate ma nua l s.
12 Getting Started Chapter 1
MULTIPLE MODULE SWITCH BOX CARD NUMBERS
Figure 1-2. Card Numb ers for Mult iple- Mo dul e Switch boxe s
MODULE NUMBERS
Figure 1-3. Module Numbers
Chapter 1 Getting Started 13
Module Number The module number iden ti fies t he mod ule ( RF Multi pl ex er, Expa nd er #1, or
Expander #2) within the card . The number depends on t he desired m odule (RF
Multiplexer, Expander #1, or Expander #2). Figure 1-3 i ll ustrates the module
numbers of a typical ca rd.
• RF Multiplexer. Module num ber is 00. If the RF Multiplexer
does not have Expander module(s) c onnected, the module
number can be omitted.
• Expander modu le #1 . Module number is 01. Used to select
the Expander module (if installed) connected to the RF Multiplexer
RMD 3/RMD 2 internal ribbon connector.
• Expander modu le #2 . Module number is 02. Used to select
the Expander module (if installed) connected to the RF Multiplexer
RMD 5/RMD 4 internal ribbon connector.
Channel Number T he chann el number s are 0 0-03 ,10-13 ,2 0-23 ,30-33 , 40 -43, and 50-53. The cha nnel
is addressed using channel numbers. Use commas (,) to form a channel list. Only
valid channels can be acc essed in a channel list.
Note
SCPI Command
Format Used in
This Manual
The RF Multiplexer will accept and exec ute chann el ranges (c cmmnn:c c mmnn)
without generat ing an error, bu t the resul t is to close the last chann el in each ban k
within the range spec if ied. Fo r ex ample, after CLOSe (@010101:010151) is
executed, card 01, module 01 c hannels 03, 13, 23, 33, 43, and 51 would remain
closed.
Example RF Multi ple xer Channel List
Channel Lists:
CLOSe (@10001) Connect channe l 01 to COM 00
on the RF Multipl exe r modul e ,
card 01.
CLOSe (@10101,20101) Connect channe l 01 to COM 00
on the Expander #1 module ,
cards 01 and 02.
You can send SCPI commands in either sh ort or long form. A long form ex am pl e
is:
CLOSe (@10102)
The same command shown with out the lower ca s e letters is the short form. The
command then becomes:
CLOS (@10102)
14 Getting Started Chapter 1
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 ROUTe
command is an implied command and is shown in this manual as:
[ROUT:]CLOS (@10102)
Thus, to execute these c ommands, simply enter:
CLOS (@10102)
See Chapter 4 for more explanation about SCPI commands and how to send them.
1
Initial Operation Use the following progra m exam ple to veri fy init ial RF Multi plex er oper ati on by
closing a channel and quer ying chann el closur e. The example fi rst resets the
switchbox and then cl oses channel 02 of a single RF Multiplex er module (ca rd
number 1) in the switchbox. The pr ogram next queries the cha nnel closure state. A
returned "1" shows t hat the c omm and t o close the channel has been sent to the
switchbox. A returned " 0" shows tha t the com m an d to clos e the channel has not
been sent to the switchbox.
The computer used in the exampl e is an HP Series 20 0/300 c omputer with HP
BASIC as the program la ngu ag e. Th e computer interfaces to the m ainframe using
the Hewlett-Packa rd Interface Bus ( HP-IB).
the HP-IB primary address is 09, and the HP-IB secondary address is 15. Refer to
the your specific “HP Command Module User’s Guide” for addressing information.
1
The HP-IB interface select c ode is 7,
Example: Reset the switchbox and connect RF Mul tiplexer cha nnel 02 to
COM 00.
10 OUTPUT 70915;"*RST" Resets the module. S witche s al l
channel n0 to COM n0.
20 OUTPUT 70915;"CLOS (@102)" Connect channel 02 to COM 00.
30 OUTPUT 70915;"CLOS? (@102)" Query channel 02.
40 ENTER 70915;Value Enter result s int o v alu e.
50 PRINT Value Display result s (shou ld retur n
"1").
60 END Terminate progra m.
1 HP-IB is Hewlett-Pa ck ard’s im plemen t a tion of IEEE Std 488.1-198 4
Chapter 1 Getting Started 15
Notes
16 Getting Started Chapter 1
Configurin g the R F Mu lti plex er Modul es
Using This Chapter This chapt er show s how to conne ct exter nal wiri ng to the RF Multip lexer and
Expander c onnect ors, and how to configur e the modul e for opera ti on. This chapt er
contains the followin g secti ons:
• Warnings and C autions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Page 17
• Setting the Address Switch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Page 18
• Selecting the Interrupt Priorit y . . . . . . . . . . . . . . . . . . . . . . . . . . . . Page 19
• Expanding the RF Multiplexer . . . . . . . . . . . . . . . . . . . . . . . . . . . . Page 20
• Selecting the Relay Drive Level . . . . . . . . . . . . . . . . . . . . . . . . . . . Page 22
• Connectin g Us er Input s To E14 72A/ 73A . . . . . . . . . . . . . . . . . . . Page 23
• Conne cting Us er Input s To E14 74A/ 75A . . . . . . . . . . . . . . . . . . . Page 24
• Cables and Connectors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Page 27
1
Warnings and
2
Cautions
Warning
Caution
SHOCK HAZARD. Only servi ce-trained personnel who are aware of the
hazards in vol ved s hould install, remove, or configure the RF Multiple xe r.
Before you rem ove any installe d mod ule, disconnec t AC p ower fro m the
mainframe and from other modules that ma y be conne cte d to the RF
Multiplexer.
CHANNEL WIRING INSULATION. All channels that have a common
connecti on m ust be ins ulated s o that the user is prote cte d fr om elec tric al shock
in the event that two or more channels are connecte d toget her. This means
wiring for all cha nnel s must be insulated as though each channel carries the
voltage of the highe st voltage channe l.
MAXIMUM POWER. The maximum power that can be appl ied to a ny SMB
connector is 24 W (24 VA). The maximum vol ta ge that ca n be ap pli ed t o any S M B
connector is 42 V peak. The maximum curren t that can be appl ied to any SM B
connector is 1 A DC/AC RMS.
STATIC ELECTRICITY. Sta ti c el ectricity is a major cause of component failure.
To prevent damage to the electrica l c omponents in the RF Multiplexer, o bserve
anti-static tech ni ques when ever removing a module from the m ainframe or
whenever working on a module.
Chapter 2 Configuring the RF Multiplexer 17
2
Setting th e
Address Switch
Note
LOCATE AND SET THE LOGICAL SWITCH
The logical address switch (LADDR) factory setting is 120. You may have
changed the setting during module insta llation . Valid address values are from 0 to
255. If the RF Multiplexer is used with an HP Com ma nd Modul e in a C Si ze
Mainframe, refer to the “HP Command Module User’s Guide” for addressing
information. Otherwise, use Fig ure 2-1 t o chan ge the s etting.
The address s witch selecte d value must be a multiple of 8 if the module is the first
module in a “switchbox ” used in a VXIb us main frame , and bei ng in struc t ed by
SCPI commands.
Figure 2-4 Address Selection
18 Configuring the RF Multiplexer Chapter 2
1
Selecting the
Interrupt Priority
Note
The RF Multiplexer modul e gener a t es a n in terrupt after a channel has been closed.
These interrupts are sent to, and acknowledgements are received from, the HP
Command Module via the VXIbus backplane interrupt lines.
For most applica t i ons wher e t he RF Mult iplexer module is installed i n an HP 75 000
Series C mainframe, the interrup t priority jumper does not have to be moved. This
is because the VXIbus interrupt lines have the same priority and interrupt priority is
established by installi ng modu les in slots numeri cal ly closest to the Command
Module. Thus, slot 1 has a higher pr i ority than sl ot 2, slot 2 has a higher pr iorit y
than slot 3, etc.
Refer to Figure 2-2 t o change th e interrupt priority. You can select eight differ en t
interrupt pri ority le vels. Level 1 is the lo west priority and Level 7 is the high est
priorit y. Level X disables the interrupt. The Module’s factory setting is Le vel 1.
To change, rem ove th e 4-pin jumper ( HP P/N 1258-0 247) from the ol d priori t y
location and reinstall in the new priorit y location (Figure 2-2 shows a priority
change from 1 to 7). If the 4-pin jumper is not used, the two jump er loca tions m ust
have the same interrupt priority level selected (see Figure 2-2).
Level X interrupt priority shou ld not be used unde r norma l operat in g condi tions.
Changing the priorit y level jumper is no t reco mmen de d. Do not change unle s s
specificall y inst ruc ted to do so.
Figure 2-5 Interrupt Priorty Selection
Chapter 2 Configuring the RF Multiplexer 19
1
Expan ding the
RF Multiplexer
Note
Each RF Multiplex er module is ca pable of c ontrol ling up to two Expander modules,
providing a tota l of eighteen (4:1) ban ks. The Expander m odules can be physical ly
located in the C-Siz e m a in fra m e next t o the RF Multiplexer, or up to eight meters
away using extension cables. Use Figur e 2-3 and the pro cedure below to conne ct
the Expander Modul es.
1. Verify a 3-1 cable (HP P/N E1472-6 1601 ) is insta lled in the Remot e
Module Driver (RMD) 2/4/5 cable slot. Cable can be connected without
removing the shield.
2. Cut the cable ties holdi ng the cables, and pull the cables throug h the slots
in the shield .
3. Mark the 3-1 cables as shown in Figure 2-3 (cross-out unused RMD
number).
4. Connect the 3-1 cables to the Expa nder M odules as fol l ows:
RMD3 cable to HP Expander (mod ule 01) Bank 3-5 c onnect or.
RMD2 cable to HP Expander (mod ule 01) Bank 0-2 c onnect or.
RMD5 cable to HP Expander (mod ule 02) Bank 3-5 c onnect or.
RMD4 cable to HP Expander (mod ule 02) Bank 0-2 c onnect or.
RMD1 cable is con ne ct ed to HP E1 472A /74A (module 00) Bank 3-5 con ne ctor, and
RMD0 cabl e is con nect e d to HP E1472/ 74A (module 00) Ban k 0-2 co nne ctor at the
factory. These conne ctio ns are not acce ssibl e with the shield in place and sho uld
not be moved.
5. If the Expa nd er module is ph ysica lly l ocated (up to eight meters) awa y
from the mainframe, you can daisy chain up to 10 extender cables (HP P/N
E1473-80002) for ea ch RMD con necti on (see Fi gure 2-3,
module 02).
6. Fold and tie unused RMD cables.
20 Configuring the RF Multiplexer Chapter 2
Loading...