Agilent Technologies
E1472A/73A/74A/75A
50 Ohm and 75 Ohm
RF Multiplexers/Expanders
User’s Manual
*E1472-90003*
Manual Part Number: E1472-90003
Printed in U.S.A. E1100
Contents
E1472A/73A/74A/75A RF Multiplexers User’s Manual
AGILENT TECHNOLOGIES WARRANTY STATEMENT ............................................5
Safety Symbols............................................................................................................6
WARNINGS.................................................................................................................6
Chapter 1
Getting Started ..............................................................................................................9
Using This Chapter ......................................................................................................9
How to Use this Manual ...............................................................................................9
RF Multiplexers Description....................................................................................... 10
General Description ............................................................................................11
Basic Operation ..................................................................................................11
Typical Configuration ..........................................................................................12
InstrumentDefinition ...........................................................................................12
Programming the RF M ultiplexers.............................................................................. 13
Addressing the Multiplexers ............................................................................... 13
Initial Operation ..................................................................................................16
Chapter 2
Configuring the RF Multiplexers ...............................................................................17
Using This Chapter .................................................................................................... 17
Warnings and Cautions.............................................................................................. 17
Setting the Address Switch........................................................................................18
Selecting the Interrupt Priority....................................................................................19
Expanding the RF Multiplexer....................................................................................20
Selecting the Relay Drive Level.................................................................................22
Connecting User Inputs to E1472A/E1473A..............................................................24
Cabling Guidelines .............................................................................................24
Connecting User Inputs to E1474A/E1475A..............................................................25
Cabling Guidelines .............................................................................................25
Cables and Connectors .............................................................................................28
Cables ................................................................................................................28
Connectors .........................................................................................................29
Chapter 3
Using the RF Multiplexers ..........................................................................................31
Using This Chapter .................................................................................................... 31
RF Multiplexer Commands.........................................................................................31
Switching Channels ...................................................................................................32
Saving and Recalling States...................................................................................... 34
Detecting Error Conditions .........................................................................................34
Synchronizing the RF Multiplexer..............................................................................36
3
Chapter 4
RF Multiplexer Command R eference ........................................................................37
Using This Chapter .................................................................................................... 37
Command Types........................................................................................................ 37
Common Command Format ...............................................................................37
SCPI Command F ormat .....................................................................................37
SCPI Command Reference........................................................................................39
[ROUTe:] ....................................................................................................................40
[ROUTe:]CLOSe .................................................................................................40
[ROUTe:]CLOSe? ...............................................................................................41
[ROUTe:]OPEN? .................................................................................................41
SYSTem .....................................................................................................................43
SYSTem:CDEScription? .....................................................................................43
SYSTem:COPTion? ............................................................................................43
SYSTem:CPON ..................................................................................................44
SYSTem:CTYPe? ...............................................................................................44
SYSTem:ERRor? ................................................................................................ 45
Common Commands Quick Reference .....................................................................46
SCPI Commands Qu ick Reference............................................................................ 47
Appendix A
RF Multiplexer Specifications ....................................................................................49
Appendix B
Register-Based Programming ...................................................................................51
About This Appendix..................................................................................................51
Addressing the Registers...........................................................................................51
Reading t he Registers ...............................................................................................52
Manufacturer ID Register ...................................................................................52
Device Type Register ......................................................................................... 52
Status/ControlRegister .......................................................................................52
Remote Module ID Registers .............................................................................53
Channel E nable Registers ..................................................................................53
Writing to the Registers..............................................................................................53
Status/ControlRegister .......................................................................................53
Channel E nable Registers ..................................................................................54
Selecting Channels Using Your Own Rel ays .............................................................57
Appendix C
RF Multiplexer E rror Messages .. ...............................................................................61
Appendix D
Relay Life .....................................................................................................................63
Replacement Strategy................................................................................................63
Relay Life Factors......................................................................................................63
End-of-Life Determination..........................................................................................63
Index................................................................................................................................65
4
AGILENT TECHNOLOGIES WARRANTY STATEMENT
AGILENT PRODUCT: E1472A/73A/74A/75ARF Multiplexers DURATION OF WARRA NTY: 3years
1. AgilentTechnologieswarrantsAgilent hardware,accessories and supplies againstdefectsin m aterials and workmanshipfor the period
specified above. If Agilent receives notice of such defectsduring the warrantyperiod,Agilent will, at its option,either repair or replace
products which prove to be defective. Replacement products may be either new or like-new.
2. Agilent warrants that Agilent software will not fail to execute its programming instructions,for the period specified above, due to
defects in material and workmanship when properly installed and used. If Agilent receives notice of such defects during the warranty
period, Agilent will replace software media which does not execute its programming instructions due to such defects.
3.Agilentdoes not warrantthat the operationof Agilent productswill be interruptedor error free. IfAgilentis unable,withina reasonable
time,to repair or replaceany product to a condition as warranted, customer will be entitledto a refundof the purchase price upon prompt
return of the product.
4. Agilent productsmay contain remanufactured parts equivalent to new in performance or may have been subject to incidental use.
5. The warranty period begins on the date of delivery or on the date of installation if installedby Agilent. If customerschedules or delays
Agilentinstallation more than 30 days after delivery, warranty begins on the 31st day from delivery.
6.Warranty doesnot apply to defectsresultingfrom(a) improper or inadequatemaintenance or calibration, (b) software,interfacing, parts
or supplies not supplied by Agilent, (c) unauthorized modification or misuse, (d) operation outside of the publishedenvironmental
specifications for the product, or (e) improper site preparation or maintenance.
7. TO THE EXTENT ALLOWED BY LOCAL LAW, THE ABOVE W ARRANTIES ARE EXCLUSIVE AND NO OTHER
WARRANTY OR CONDITION, WHETHER WRITTEN OR ORAL, IS EXPRESSED OR IMPLIED AND AGILENT
SPECIFICALLY DISCLAIMS ANY IMPLIED WARRANTY OR CONDITIONS OF MERCHANTABILITY, SATISFACTORY
QUALITY, AND FI TNESS FOR A PARTICULAR PURPOSE.
8.Agilentwill be liablefor damage to tangiblepropertyperincidentup to the greaterof $300,000 or the actualamount paid for the product
that is the subject of the claim, and for damages for bodily injury or death, to the extent that all such damages are determined by a court
of competent jurisdiction to have been directly caused by a defective Agilent product.
9. TO THE EXTENT ALLOWED BY LOCAL LAW, THE REMEDIES IN THIS WARRANTY STATEMENT ARE CUSTOMER’S
SOLE AND EXLUSIVE REMEDIES. EXCEPT AS INDICATED ABOVE, IN NO EVENT WILL AGILENT OR ITS SUPPLIERS BE
LIABLE FOR LOSS OF DATA OR FOR DIRECT, SPECIAL, INCIDENTAL, CONSEQUENTIAL (INCLUDING LOST PROFIT OR
DATA), OR OTHER DAMAGE, WHETHER BASED IN CONTRACT, TORT, OR OTHERWISE.
FOR CONSUMER TRANSACTIONS IN AUSTRALIA AND NEW ZEALAND: THE WARRANTY TERMS CONTAINED IN THIS
STATEMENT, EXCEPT TO THE EXTENT LAWFULLY PERMITTED, DO NOT EXCLUDE, RESTRICT OR MODIFY AND ARE
IN ADDITION TO THE MANDATORY STATUTORY RI GHTS APPLICABLE TO THE SALE OF THIS PRODUCT TO YOU.
U.S. G overnment Restricted Right s
The Software and Documentation have been developed entirely at private expense. They are delivered and licensed as "commercial
computersoftware" as defined in DFARS 252.227- 7013 (Oct 1988), DFARS 252.211-7015 (May 1991) or DFARS 252.227-7014 (Jun
1995), as a "commercial item" as defined in FAR 2.101(a), or as "Restricted computer software" as defined in FAR 52.227-19 (Jun
1987)(or any equivalent agency regulation or contract clause), whichever is applicable.You have only those rightsprovided for such
Software and Documentation by the applicable FAR or DFARS clause or the Agilent standard software agreement for the product
involved.
E1472A/73A/74A/75A RF M ultiplexers User’s Manual
Copyright© 1990-1992,2000 AgilentTechnologies, Inc. All rights reserved.
Edition 4
5
Documentation History
All Editions and Updates of this manual and their creation date are listed below. The first Editionof the manual is Edition 1. The Edition
number incrementsby 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 Editionis 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 history page.
Edition1 ............................................January, 1990
Edition2 ............................................October,1991
Edition3 ..........................................November,1992
Edition4 ..........................................November,2000
Safety Symbols
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product. Indicates that the user must refer to
product. Indicates that the user must refer to
the manual for specific WARNING or
the manual for specific WARNING or
CAUTION information to avoid personal
CAUTION information to avoid personal
injury or damage to the product.
injury or damage to the product.
Indicates the field wiring terminal that must
be connected to earth ground before
operating the equipment — protectsagainst
electrical shock in case of fault.
WARNING
Alternating current (AC)
Direct current(DC).
Warning. Risk of electrical shock.
Calls attention to a procedure, practice, or
conditionthat could cause bodily injury or
death.
or
Frameorchassisgroundterminal—typically
connects to the equipment's metal frame.
CAUTION
Calls attention to a procedure, practice, or
conditiont hat couldpossiblycausedamageto
equipmentor permanent l oss of data.
WARNINGS
The following general safety precautionsmust be observed during all phases of operation, service, and repair of this product. Failure to
complywith these precautions or with specific warnings elsewhere in this manual violates s afety standardsof design, manufacture, and
intendeduse of the product. Agilent Technologies assumes no liabilityfor 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 protectionagainst 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 coversor 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 switchedoff.To avoid dangerouselectrical shock, DO NOT performproceduresinvolvingcover or shield removal unlessyou
are qualified to do so.
DO NOT operate damaged equipment: Wheneverit is possible that the safety protection features built into this product have been
impaired,either through physical damage, excessivemoisture,or any other reason, REMOVE POWER and do not use the product until
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DO NOT serviceor adjust alone: Do not attemptinternalserviceor adjustmentunless anotherperson, capable of renderingfirstaid and
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are maintained.
6
DECLARATION OF CONFORMITY
According to ISO/IEC Guide 22 and CEN/CENELEC EN 45014
Manufacturer’s Name: Agilent Technologies, Inc.
Manufacturer’s Address: Measurement Products Unit
815 14
Loveland, CO 80537 USA
Declares, that the product
Product Name: 50 Ohm and 75 Ohm RF Multiplexers/Expanders
Model Number: E1472A/73A/74A/75A
Product Options: This dec laration includes all options of the above product(s).
Conforms with the following E uropean Directives:
The product herewith complieswith the requirements of the Low Voltage Directive73/23/EEC and the EMC Directive 89/336/EEC
and carries the CE Marking accordingly.
Conforms with the following product standards:
EMC Standard Limit
IEC 61326-1:1997 + A1:1998 / EN 61326-1:1997+ A1:1998
CISPR11:1997 + A1:1997 / EN 55011-1991 Group 1, ClassA
IEC 61000-4-2:1995+A1998 / EN 61000-4-2:1995 4 kV CD, 8 kV AD
IEC 61000-4-3:1995 / EN 61000-4-3:1995 3 V/m, 80-1000 MHz
IEC 61000-4-4:1995 / EN 61000-4-4:1995 0.5kV signal lines,1 kV power lines
IEC 61000-4-5:1995 / EN 61000-4-5:1995 0.5 kV line-line, 1 kV line-ground
IEC 61000-4-6:1996 / EN 61000-4-6:1996 3 V, 0.15-80 MHz
IEC 61000-4-11:1994/ EN 61000-4-11:1994 1 cycle, 100%
th
Street S.W.
[1]
Canada:ICES-001:1998
Australia/New Zealand: AS/NZS 2064.1
Safety IEC 61010-1:1990+A1:1992+A2:1995 / EN 61010-1:1993+A2:1995
Canada: CSA C22.2 No. 1010.1:1992
UL 3111-1
Supplemental Information:
[1] The product was tested in a typical configuration with Agilent Technologies test systems.
September 5, 2000
Date Name
Quality Manager
Title
For further information, please contact your local Agilent Technologies sales office, agent or distributor.
Authorized EU-representative: Agilent Technologies Duetschland GmbH, Herrenberger Strase 130, D 71034 Boblingen, Germany
Revision: A.03 Issue Date: 09/05/00
7
Notes:
8
Using This Chapter
This c hapter des cribes the RF Multiplexer and Expander modules and
contains information on how to program them using Standard C ommands
for Programmable Instruments (SCPI). This chapter contains the following
sections:
• How to Use This Manual...............................9
• RFMultiplexersDescription...........................10
• ProgrammingtheRFMultiplexers......................13
How to Use this Manual
This manual shows how to operate, configure, and program the E1472A
50 Ohm RF Multiplexer, E1473A 50 Ohm RF Multiplexer Expander, E1474A
75 Ohm RF Multiplexer, and E1475A 75 Ohm RF Multiplexer Expander
modules. The RF Multiplexer is a VXIbus C-Size register-based slave
device, and can operate in a C-size VXIbus mainf rame using a com mand
module such as the E1406. For other manufacturers’ mainframes, r efer to
the applicable m anual supplied by the manufacturer.
Chapter 1
Getting Started
NOTE Except where noted, the term “RF Multiplexer” refers to the E1472A
50 Ohm RF Multiplexer and E1474A 75 Ohm RF Multiplexer Modules.
The t erm “Expander” refers to the E 1473A 50 Ohm RF Multiplexer
Expander, and E1475A 75 Ohm RF Multiplexer Expander Modules.
Most information in this manual applies to RF Multiplexer operations in a
command module. Standard Commands for Programmable In struments
(SCPI) i s the programming language. For non-SCPI programming, s ee
Appendix B for register-based programmin g.
Chapter 1
Getting Started 9
RF Multiplexers Description
Figure 1-1 shows the 50 Ohm and 75 Ohm RF Multiplexer and 50 Ohm and
75Ohm RF Multiplexer Expander modules switching diagram. During power
off, power on and reset, channel 0 is connected to COM on each bank.
00
01
COM 00
02
03
10 Getting Started
E1472A
Figure 1-1. RF Multiplexers/Expanders Switching Diagram
Chapter 1
General Description The RF Multiplexer (6 x 4:1) and the Expande r (6 x 4:1) modulesare VXIbus
C-Size regi s ter-based products which p rovide bidirectional switching for
user inputs and outputs. Switching consists of connecting one channel to
common in that bank. T he RF Multiplexer c an operate in a C-Size VXI
mainframe using a command module s uc h as an E1406.
Up to two Expander m odules can be controlled by a single RF Multiplexer
module, providing a total of eighteen (4:1) multiplexer banks. Thes e
Expander modules can either be inserted i nto the C -Size mainframe nex t to
the RF Multiplexer, or can be located up to eight meters from the RF
Multiplexer using the remote expander cables. Locating the Expander
module close to the external devi ce keeps connecting cable lengths to a
minimum, thereby reducing the possibility of cross-talk and insertion loss
of hig h frequency signals.
You may connect E1475AExpander or E1473A E xpander to the E1472A or
E1474A Multiplexer. The drivers o n both m odules can support either of the
expander relay modules.
Basic Operation The RF Multiplexer modules and Expander module consists of six banks of
channels (bank 0 through bank 5) to f orm six4:1 multiplexers. The switching
sections of the RF M ult iplexer and Expander modules are identical. See
Figure 1-1 fora simplifiedswitching diagram. B ank s are arranged as f ollows:
• 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.
In the remainder of this manual, channels are referred to as n0 through n3
and Com n0, where n is the bank number (0 through 5). Each channel is
switched(connec tedto itscommon ) by closingth e appropriate (nonlatching)
relays. Channels n 0 through n3 can be switched to Com n0 for all bank s.
Only one channel in each bank can be connected to its common at a time.
User i nputs/outputs to each channel are via SMB c onnectors. When a
channel is CLOSed, it is internally connected to the COMmon connector.
When achann el is open, itis internally disconnected. Open channels are not
terminated. At power-off, power-on, or reset, c hannel n0 is switched to the
COM n0 connector, and all other channels (n1 through n3) are open
(non-terminated) for all banks.
Chapter 1
Getting Started 11
Typical
Configuration
The RF M ultiplexer and Expander relays are configured in a “t ree” structure
which provides high isolation and low VSWR (voltage standing wave ratio).
Each channel can switch user inputs up to 24 Watts (42V peak). User input
frequencies to the 50 Ohm RF Multiplexer and Expander modules can be
from DC to 3 GHz. User input frequencies to the 75 Ohm RFMultiplexer and
Expander modules can be f r om DC to 1.3 GHz.The RF Multiplexer can be
configured for several arrangements, s uc h as standard, tree,or matrix (see
Chapter 4 for more information).
For a Standard Commands for Programmabl e Instruments (SCPI)
environment, one or more RF Multiplexers (with or without Expanders
connected) can be defined as a switchbox instrument. For a switc hbox
instrument, all RF Multiplexer channels within the instrument can be
addressed using a single interf ac e address.
Instrument
Definition
Plug-in modules inst alle d in a mainframe or used with a command module
are treated as independent instruments each having a unique secondary
GPIB address. Each instrument is also assigned a dedicated error queue,
input and output buffers, status registers and, if applicable, dedicated
mainframe/command module memory sp ac e for readings or data. An
instrument may be compo se d of asingle plug-in module (suchas a counter)
or multipl e plug-in modules (for a Switchbox or Scanning Voltmeter
Instrument).
12 Getting Started
Chapter 1
Programming the RF Multiplexers
To program the RF Multiplexers using SCPI, you must select the controller
language, interfaceaddress,a nd SCPI commandsto be used. Guidelines to
select SC P I commands for the RF Multiplexers follow. See the specific
command module manual for interface addressing and controller language
information.
NOTE This discussion applies to SCPI programming. See Appendix B for details
on programming RF Multiplexer registers.
Addressing the
Multiplexers
RF Multiplexer Channel
Addresses
RF Multiplexer Card
Numbers
NOTE The Expander module(s) card number is the same as the RF Multiplexer to
To addres s specific channels within a n RF Multiplexer, you must specify
the SCP I command and RF Mul tiplexer channel address. For the RF
Multiplexer, use CLOSe (channel_list) to switch (connect) channels.
For th e RF Multiplexer, the channel address (channel_list) has the form
(@ccmmnn) where cc = RF Multiplexer card number (01-99), mm =RF
Multiplexer/Expander module number (00-02), and nn = channel num ber
(00-03, 10-13, 20-23, 30-33, 40-43, or 50-53). Use the form:
• (@ccmmnn) for a single channel
• (@ccmmnn,ccmmnn) for multiple channels
The RF Multiplexer card number depends on the switchbox configuration
(single-module or m ultiple -module) set for the RF Multiplexers. (Leading
zeroes can be ignored for the card number.)
which it is connected.
• Single-module. For asingl e-module switchbox, the c ard number is
always 01.
Chapter 1
• Multiple-module. For a multiple-module switchbox, the RF
Multiplexer module with the lowes t logical address is always c ard
number 01. The card number with the next successive logical
address is 02, etc.
Figure 1-2 illustrates the c ard numbers and lo gical addresses of a typical
multiple-module switchbox. The logical addresses inFigure 1-2 apply to RF
Multiplexersinstalledin a VXI mainframe with a command module . See your
specific command module manual for more information on switchboxes and
logical addressing. For uses in other systems or m ainframes, see the
appropriate manuals.
Getting Started 13
Command Module
Multiple Module Switch Box Card Numbers
CARD NUMBER 01
RF Multiplexer Module
Logical Address 120
Secondary Address 15
CARD NUMBER 02
RF Multiplexer Module
Logical Address 121
NOTE:
Physical placement of the Module in the
Logical Address Order is not required,
but is recommended.
CARD NUMBER 08
RF Multiplexer Module
Logical Address 127
CARD NUMBER 09
RF Multiplexer Module
Logical Address 128
Secondary Address 15
Figure 1-2. Card Numbers for Multiple-Module Switches
Module Numbers The module number identifies the module (RF Multiplexer, Expander #1, or
Expander #2) within the card. The number depends on the desired module
(RF Multiplexer, Expander #1, or Expander #2). Figure 1-3 illustrates the
module numbers of a typical card.
Module Numbers
Command Module
CARD NUMBER 01 MODULE #00
RF Multiplexer Module
CARD NUMBER 01 MODULE #2
ExpanderModule #02
14 Getting Started
CARD NUMBER 01 MODULE #01
ExpanderModule #01
NOTE:
Physicalplacement of the Module in the
LogicalAddress Order is not required,
but is recommended.
Figure 1-3. Typical Module Numbers
• RF Multiplexer. Module number is 00. If the RF Multiplexer does
not have E x pander module(s) connected, the module num ber can
be omitted.
• Expander module #1. Module number is 01. Used to select the
Expander module (if installed) connecte d to the RF Multiplexer
RMD 3/RMD 2 internal ribbon connector.
• Expander module #2. Module number is 02. Used to select the
Expander module (if installed) connecte d to the RF Multiplexer
RMD 5/RMD 4 internal ribbon connector.
Chapter 1
Channel Numbers The channel numbers are 00-03, 10-13, 20-23, 30-33, 40-43, and 50-53.
The channel is addressed using channel numbers. Us e commas (,) to form
a channel list. Only vali d channels can be accessed in a channel list.
NOTE The RF Multiplexer will accept and execute channel ranges
(ccmmnn:ccmmnn) without generating an error, but t he result is to close
the la st channel in each bank within the range spec ified. For example,
after CLOSe (@010101:010151) is executed, card 01, module 01 channels
03, 13, 23, 33, 43, and 51 would remain closed.
Example: RF Multiplexer Channel List
Channel Lists:
CLOSe (@10001)
CLOSe (@10101,20101)
Connect channel 01 to COM
00 on the RF Multiplexer
module, card 01.
Connect channel 01 to COM
00 on the Expander #1
module, cards 01 and 02.
SCPI Command Format You can send SCPI commands in either short or long form. A long form
example is:
CLOSe (@10102)
The same command shown without the lower case letters is the short form.
The c ommand then becomes:
CLOS (@10102)
Some c ommands are shown with brackets ([ ]). These are implied or
optional c ommands you do not have to execute. For ex ample, the
command is an implied command and is shown as:
[ROUT:]CLOS (@10102)
Thus, to execute these commands, e nter:
CLOS (@10102)
ROUTe
Chapter 1
SeeChapter3 for more information about SCPI commands and how tosend
them.
Getting Started 15
Initial Operation You can use the following program example to verify initial RF Multiplexer
operation by closing a channel and querying channel closure. Th e example
first resets the switchbox and then closes channel 02 of a single RF
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 chan nel has been sent to the switchbox.
A ret urned “0" shows that the c ommand to close the channel has not been
sent to the switchbox.
This ex ample uses BASIC as the program language. The computer
interfaces to the mainframe using GPIB. The GPIB interface sel ec t code is
7, the primary address is 09, and the secondary addres s is 15. See the
specific command module user’s guide for addressing information.
10 OUTPUT 70915;"*RST"
20 OUTPUT 70915;"CLOS (@102)"
30 OUTPUT 70915;"CLOS? (@102)"
40 ENTER 70915;Value
50 PRINT Value
60 END
!Resetsthemodule.Switches
all channel n 0 to COM n 0.
!Connect channel 02 to
COM 00.
!Query channel 02.
!Enter results into value.
!Display results (should
return "1").
!End program.
16 Getting Started
Chapter 1
Configuring the RF Multiplexers
Using This Chapter
Thischapter sh ows how to connect external wiring to the RF Multiplexer and
Expander connectors and how to configure the modules for operation.
• WarningsandCautions ............................. 17
• SettingtheAddressSwitch .......................... 18
• SelectingtheInterruptPriority........................ 19
• Expanding the RF Multiplexer . . ...................... 20
• SelectingtheRelayDriveLevel....................... 22
• Connecting User Inputs to E1472A/73A ................ 24
• Connecting User Inputs to E1474A/75A ................ 25
• CablesandConnectors............................. 28
Warnings and Cautions
Chapter 2
WARNING SHOCK HAZARD. Only service-trained personnel who are
aware of the hazards involved should install, remove, or
configure the RF Multiplexer. Before you remove any installed
module, disconnect AC power from the mainframe and from
other modules that may be connected to the RF Multiplexer.
CHANNEL WIRING INSULATION. All channels that have a
common connection must be insulated s o that the us er is
protected from electrical shock in the event that two or more
channels are connected together. This m eans wiring for all
channels must be insulated as though e ach channel carries the
voltage of the highest voltage channel.
CAUTION MAXIMUM POWER. The maximum power that can be applied to any
SMB connec tor is 24 W (24 VA). The maximum voltage that c an be applied
to any SMB connector is 42V peak. The maximum current that can be
applied to any SMB con nec tor is 1A DC/AC RMS.
STATIC ELECTRICITY. Static elect r icity is a major cause of component
failure. To prevent damage t o the electrical components in the RF
Multiplexer, observe anti-static techniques whenever removing a module
from the mainframe or whenever working on a module.
Chapter 2
Configuring the RF Multiplexers 17
Setting the Address Switch
The logical address switch (LADDR) factory setting is 120. You may have
changed the setting during module installation. Valid address values are
from 0 to 255. If the RF Multiplexer is used with a command module in a
C-Size m ainframe, see the command module user’s guide for addressi ng
information. Otherwise, see Figure 2-1 to change the setting.
NOTE The address switch selected value must be a m ult ipl e of 8 if the module is
the firs t module in a “switchbox” used in a VXI mainf r ame, and is being
instructed by SCPI commands.
Logical Address
Switch Location
F
N
F
O
O
DECIMAL
VALUE
128
64
32
16
8
4
2
1
Figure 2-1. Addr ess Selection
0
2
1
=
4
6
+
2
3
+
6
1
+
8
18 Configuring the RF Multiplexers
Chapter 2
Selecting the Interrupt Priority
The RF M ultiplexer module generates an interruptafter a channel has been
closed. These interrupts are sent to, and acknowledgements are received
from, t he command module via the VXIbus backplane interrupt lines.
For most applica tions where the RF Multiplexer module is installed in a
C-Size mainframe, the interrupt priority jumper does not have to be moved.
This is because the VX Ibus interrupt lines have the same priority and
interrupt prio rity is established by installing modules in slots numerically
closest to the command module. Thus, slot 1 has a higher priority than slot
2, slot 2 has a higher priority than slot 3, etc.
See Figure 2-2 to change the interrupt priority. You can select eightdifferent
interrupt priority levels. Level 1 is the lowest priority and Level 7 is the
highest priority. Level X disables the interrupt. The module’s factory setting
is L ev el 1. To change, remove the 4-pin jumper (part number 1258-0247)
from the old priority location and reinstall in the new priority location (Figure
2-2 shows a priority change from 1 to 7). If the 4-pin jumper is not used, the
two jumper locations mus t have the same interrupt priority level selected
(see Figure 2-2).
NOTE Level X interrupt priority should not be used under normal operating
conditions. Changing the priority level jumper is not recommended. Do not
change unless specifically instructed to do so.
Chapter 2
Using 2-Pin
Jumper or Shorts
IRQ
7
6
5
4
3
2
1
X
Using 4-Pin
Jumper
IRQ
7
6
5
4
3
2
1
X
Figure 2-2. Interrupt Priority Selection
Configuring the RF Multiplexers 19
Interrupt
Priority
Selection
Expanding the RF Multiplexer
Each RF Multiplexer module i s capable of controlling up to two Expander
modules, providing a total of eighteen (4:1) bank s. The Expander modules
can b e physically located in the C-Siz e mainframe next to the RF
Multiplexer, or up to eight meters away using extension cables. Use Figure
2-3 and the following procedure to connect the Expander modules.
1 Verify a 3-1 cable (part number E 1472-61601) is installed in the
Remote Module Driver (RMD) 2/4/5 cable slot. Cable can be
connected without remov ing the shield.
2 Cut the cable ties holding the cables, and pull the cables through the
slots in the shield.
3 Mark the 3-1 c ables as shown in Figure 2-3 (cro ss out unused RMD
number).
4 Connect the 3-1 cables to the Expander modules as follows:
- RMD3 cable to Expander (module 01) Bank 3-5 connector.
- RMD2 cable to Expander (module 01) Bank 0-2 connector.
- RMD5 cable to Expander (module 02) Bank 3-5 connector.
- RMD4 cable to Expander (module 02) Bank 0-2 connector.
NOTE RMD1 cable is c onnected to E1472A/74A (module 00) Bank 3-5 connector,
and RMD0 cable is connected to E1472/74A (module 00) Bank 0-2
connector at the factory. These connections are not accessible wi th the
shield in place and should not be moved.
5 If the Expander module is physically located (up to eight meters)
away from the mainframe, you can daisy c hain up to 10 extender
cables (part number E1473-80002) for each RMD connection (see
Figure 2-3,module 02).
6 Fol d and tie unused RMD cables.
20 Configuring the RF Multiplexers
Chapter 2
Shield
RMD1
RMD0
P200
P400
Shield
RMD3
Shield
RMD5
Module 00
E1472A or
E1474A
A2-A3
RMD2
A1-A2
Module 01
E1473A or
E1475A
Module02
E1473A or
E1475A
Figure 2-3. ExpanderModule Connections
RMD4
A1-A2
Chapter 2
Configuring the RF Multiplexers 21
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