Racal Instruments 1260-X133 User manual

1260 VXI SWITCHING CARD
1x4 MULTIPLEXER PLUG-IN
MODEL 1260-X133
PUBLICATION NO. 980914-X133
RACAL INSTRUMENTS
United States
(Corporate Headquarters and Service Center)
4 Goodyear Street, Irvine, CA 92618
Tel: [phone]; Fax: [phone]
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Tel: [phone]; Fax: [phone]
Europe
(European Headquarters and Service Center)
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Tel: [phone]; Fax: [phone]
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Tel: [phone]; Fax: [phone]
Via Milazzo 25, 20092 Cinisello B, Milan, Italy
Tel: [phone]; Fax: [phone]
Racal Instruments Group Limited, Technologie Park, D-51429 Bergisch Gladbach, Germany
Tel: [phone]; Fax: [phone]
[email protected]
[email protected]
[email protected]
http://www.racalinstruments.com
[email protected]
www.racalinstruments.de
PUBLICATION DATE: December 15, 2005
Copyright 2005 by Racal Instruments, Inc. Printed in the United States of America. All rights reserved.
This book or parts thereof may not be reproduced in any form without written permission of the publisher.

THANK YOU FOR PURCHASING THIS RACAL INSTRUMENTS PRODUCT.
For this product, or any other Racal Instruments product that incorporates software drivers, you may access
our web site to verify and/or download the latest driver versions. The web address for driver downloads is:
http://www.racalinstruments.com/downloads
If you have any questions about software driver downloads or our privacy policy, please contact us at
[email protected]
WARRANTY STATEMENT
All Racal Instruments, Inc. products are designed and manufactured to exacting standards and in full
conformance to Racal’s ISO 9001:2000 processes.
This warranty does not apply to defects resulting from any modification(s) of any product or part without Racal
Instruments express written consent, or misuse of any product or part. The warranty also does not apply to
fuses, software, non-rechargeable batteries, damage from battery leakage, or problems arising from normal
wear, such as mechanical relay life, or failure to follow instructions.
This warranty is in lieu of all other warranties, expressed or implied, including any implied warranty of
merchantability or fitness for a particular use. The remedies provided herein are buyer’s sole and exclusive
remedies.
For the specific terms of your standard warranty, or optional extended warranty or service agreement, contact
your Racal customer service advisor. Please have the following information available to facilitate service.
1. Product serial number
2. Product model number
3. Your company and contact information
You may contact your customer service advisor by:
E-Mail: [email protected]
Telephone: [phone] (USA)
[phone] (UK)
Fax: [phone] (USA)
[phone] (UK)

RETURN of PRODUCT
Authorization is required from Racal Instruments before you send us your product for service or calibration.
Call your nearest Racal Instruments support facility. A list is located on the last page of this manual. If you are
unsure where to call, contact Racal Instruments, Inc. Customer Support Department in Irvine, California, USA
at 1-800-722-3262 or 1-949-859-8999 or via fax at 1-949-859-7139. We can be reached at:
[email protected].
PROPRIETARY NOTICE
This document and the technical data herein disclosed, are proprietary to Racal Instruments, and shall not,
without express written permission of Racal Instruments, be used, in whole or in part to solicit quotations from
a competitive source or used for manufacture by anyone other than Racal Instruments. The information
herein has been developed at private expense, and may only be used for operation and maintenance
reference purposes or for purposes of engineering evaluation and incorporation into technical specifications
and other documents which specify procurement of products from Racal Instruments.
DISCLAIMER
Buyer acknowledges and agrees that it is responsible for the operation of the goods purchased and should
ensure that they are used properly and in accordance with this handbook and any other instructions provided
by Seller. Racal Instruments products are not specifically designed, manufactured or intended to be used as
parts, assemblies or components in planning, construction, maintenance or operation of a nuclear facility, or
in life support or safety critical applications in which the failure of the Racal Instruments product could create
a situation where personal injury or death could occur. Should Buyer purchase Racal Instruments product for
such unintended application, Buyer shall indemnify and hold Racal Instruments, its officers, employees,
subsidiaries, affiliates and distributors harmless against all claims arising out of a claim for personal injury or
death associated with such unintended use.

FOR YOUR SAFETY
Before undertaking any troubleshooting, maintenance or exploratory procedure, read carefully the
WARNINGS and CAUTION notices.
This equipment contains voltage hazardous to
human life and safety, and is capable of
inflicting personal injury.
If this instrument is to be powered from the AC line (mains) through an
autotransformer, ensure the common connector is connected to the neutral (earth
pole) of the power supply.
Before operating the unit, ensure the conductor (green wire) is connected to the
ground (earth) conductor of the power outlet. Do not use a two-conductor extension
cord or a three-prong/two-prong adapter. This will defeat the protective feature of the
third conductor in the power cord.
Maintenance and calibration procedures sometimes call for operation of the unit with
power applied and protective covers removed. Read the procedures and heed
warnings to avoid “live” circuit points.
Before operating this instrument:
1. Ensure the proper fuse is in place for the power source to operate.
2. Ensure all other devices connected to or in proximity to this instrument are properly grounded or
connected to the protective third-wire earth ground.
If the instrument:
- fails to operate satisfactorily
- shows visible damage
- has been stored under unfavorable conditions
- has sustained stress
Do not operate until, performance is checked by qualified personnel.

1260-X133 User Manual
i
Table of Contents
Chapter 1.............................................................................................................................. 1-1
SPECIFICATIONS.......................................................................................................................... 1-1
Introduction.................................................................................................................................. 1-1
Specifications.............................................................................................................................. 1-2
Power Dissipation........................................................................................................................ 1-3
About MTBF ................................................................................................................................ 1-4
Ordering Information ................................................................................................................... 1-5
Chapter 2.............................................................................................................................. 2-1
INSTALLATION INSTRUCTIONS................................................................................................... 2-1
Unpacking and Inspection........................................................................................................... 2-1
Reshipment Instructions.............................................................................................................. 2-1
Installation................................................................................................................................... 2-2
Module Configuration .................................................................................................................. 2-2
Connector Pin Assignments........................................................................................................ 2-6
Front Panel Connector.............................................................................................................. 2-10
Mating Connectors................................................................................................................. 2-12
Chapter 3.............................................................................................................................. 3-1
MODULE OPERATION................................................................................................................... 3-1
Setting the Module Address........................................................................................................ 3-1
Operating Modes......................................................................................................................... 3-2
Operating In Message-Based Mode............................................................................................ 3-4
Channel Descriptors For The 1260-X133................................................................................ 3-4

1260-X133 User Manual
ii
Reply To The MOD:LIST? Command.......................................................................................3-5
Operating The 1260-X133 in Register-Based Mode....................................................................3-5
Configuring Larger Multiplexers ...................................................................................................3-8
Chapter 4...............................................................................................................................4-1
PRODUCT SUPPORT.....................................................................................................................4-1
Product Support ...........................................................................................................................4-1
Reshipment Instructions...............................................................................................................4-1
Support Offices ............................................................................................................................4-2

1260-X133 User Manual
iii
List of Figures
Figure 1-1 The 1260-X133............................................................................................................. 1-1
Figure 2-1 Single 1x4 Multiplexer Example (Channels 50 through 53).......................................... 2-3
Figure 2-2 Single 2x8 Matrix Example...........................................................................................2-3
Figure 2-3 Single 1x2 Multiplexer Example (Channels 250 through 251)...................................... 2-4
Figure 2-4 Single 1x4 Configurable Multiplexer Example (Channels 420 through 431)................ 2-4
Figure 2-5 1260-X133 Block Diagram............................................................................................ 2-5
Figure 2-6 Front-Panel Connector Pin Numbering ...................................................................... 2-11
Figure 3-1 Front View – Module Addresses for 1 through 6.......................................................... 3-1
Figure 3-2 Front View – Module Addresses for 7 through 12........................................................ 3-2
Figure 3-3 Message-Based Mode of Operation............................................................................. 3-3
Figure 3-4 Register-Based Mode of Operation.............................................................................. 3-3
List of Tables
Table 2-1 1260-X133 Front-Panel Connections for J200 .............................................................. 2-6
Table 3-1 Control Register Channel Assignments......................................................................... 3-7

1260-X133 User Manual
iv
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1260-X133 User Manual
Racal Instruments ©2005 Specifications 1-1
Chapter 1
SPECIFICATIONS
Introduction The 1260-X133 is a plug-in switch module developed for the Racal
Instruments 1260-100X Adapt-a-Switch Platform. The 1260-X133
includes the following features:
•Standard Adapt-a-Switch plug-in design, providing for ease of
replacement.
•Data-driven embedded descriptor, allowing immediate use with
any Option-01T switch controller, regardless of firmware
revision level.
•Capability of combining multiple multiplexers on-board to form
large matrix.
Figure 1-1 The 1260-X133

1260-X133 User Manual
Specifications 1-2 Racal Instruments ©2005
Specifications Bandwidth (-3 dB)
1 x 4 30 MHz
2 x 8 30 MHz
1 x 2 60 MHz
Insertion Loss
1MHz: < 0.2 dB
10MHz: < 0.5 dB
Isolation
1MHz: > 60 dB
10MHz: > 45 dB
Crosstalk
1MHz: < -60 dB
10MHz: < -50 dB
Switching Voltage
AC 250 V, Max (Pollution Class 2)
DC 220 V, Max (Pollution Class 2)
AC/DC 300V, (Pollution Class 1)
Switching Current
AC 2 A, Max
DC 2 A, Max
Switching Power
AC 62.5 VA, Max
DC 60 W, Max
Path resistance
@ 1mA: < 700 mΩ
@ 1A: < 1 Ω
Capacitance
Channel to Chassis < 200 pF
Open Channel < 5 pF
Insulation resistance > 109Ω
Relay Settling Time < 15 ms
Noise Floor < -100dBm at quiescent
Maximum Power Dissipation
60W
Cooling (25% Relays energized operating at full rated current)
2.00 Liters/sec @ 0.15 mmH2O
Shock 30g, 11 ms, ½ sine wave

1260-X133 User Manual
Racal Instruments ©2005 Specifications 1-3
Vibration 0.013 in. P-P, 5-55 Hz
Bench Handling 4 in., 45°
Temperature
Operating 0°C to +55°C
Non-operating -40°C to +75°C
Relative Humidity 85% + 5% non-condensing at
< 30°C
Altitude
Operating 10,000 feet*
Non-operating 15,000 feet
Power Requirements
+5 VDC 500mA + 30mA per energized relay
(2A Max.)
Weight 1.0 lb. (0.45 kg.)
Dimensions 4.4”Hx0.75”Wx12.6”D
MTBF (50% rated load, 0.1 cycle/hour))
With relays 130,226 hours at 25°C
With relays 117,034 hours at 30°C
Safety Standard EN61010-1
Pollution Class 2
Impulse Withstand 1000V
* Operation at 15,000 feet requires de-rating of maximum overall
power dissipation to 49W
Power
Dissipation While the cooling of the Adapt-a-Switch carrier is dependent upon
the chassis into which it is installed, the carrier can normally
dissipate approximately 160W. The maximum power dissipation for
an individual module is 60W. Care must be taken, then, in the
selection and loading of the plug-in modules used in the carrier. It
is not possible to fully load the carrier, energize every relay, and
run full power through every set of contacts, all at the same time.
In practice this situation would never occur.
To properly evaluate the power dissipation of the plug-in modules,
examine the path resistance, the current passing through the relay
contacts, the ambient temperature, and the number of relays
closed at any one time.

1260-X133 User Manual
Specifications 1-4 Racal Instruments ©2005
For example, if a 1260-X133 module has 8 relays closed, passing
a current of 2A, then:
Total power dissipation =
[(current)2* (path resistance) * 8] + (quiescent power)
By substituting the actual values:
Total power dissipation =
[(2 A)2* (0.7 Ω) * 8] + ( 2.5 W) = 24.9 W at 55°C
This is acceptable power dissipation for an individual plug-in
module. In practice, rarely are more than 25% of the module’s
relays energized simultaneously, and rarely is full rated current run
through every path. In addition, the actual contact resistance is
typically one-half to one-fourth the specified maximum, and
temperatures are normally not at the rated maximum. The power
dissipated by each plug-in should be no more than 15 W if all six
slots are used simultaneously. This yields the following guideline:
0.5 A Max. 71 channels closed
1 A Max. 17 channels closed
2 A Max. 4 channels closed
The numbers in the above table represent worst-case, elevated-
temperature, end-of-life conditions.
Additionally, if fewer plug-in modules are used, more power may
be dissipated by the remaining cards. By using a chassis with high
cooling capacity, such as the Racal Instruments 1261B, almost any
configuration may be realized.
About MTBF The 1260-X133 MTBF is 130,226 hours at 25°C and 117,034
hours at 30°C, calculated in accordance with MIL-HDBK-217E,
with the electromechanical relays set at 50% rated load at 85°C.
Factors affecting relay life expectancy are:
1. Switched voltage
2. Switched current
3. Switched power
4. Maximum switching capacity
5. Maximum rated carrying current
6. Load type (resistive, inductive, capacitive)

1260-X133 User Manual
Racal Instruments ©2005 Specifications 1-5
7. Switching repetition rate
8. Ambient temperature
The most important factor is the maximum switching capacity,
which is an interrelationship of maximum switching power,
maximum switching voltage and maximum switching current.
When a relay operates at a lower percentage of its maximum
switching capacity, its life expectancy is longer. The maximum
switching capacity specification is based on a resistive load, and
must be further de-rated for inductive and capacitive loads.
The relay used on the 1260-X133 plug-in is Racal part no. 310346.
The relay manufacturer’s specifications for this relay are:
Life Expectancy
Mechanical 100,000,000 operations
Electrical 100,000 operations at full rated load
500,000 operations at 30VDC/1A
resistive, 125VDC/0.24A resistive
For additional relay specifications, refer to the relay manufacturer’s
data sheet.
Ordering
Information Listed below are part numbers for both the 1260-X133 switch
module and available mating connector accessories. Each
1260-X133 uses a single mating connector.
ITEM DESCRIPTION PART #
1260-X133 Switch Module Switch Module, 20 (1x4), 12(1x2) Single
Wire SW, 2 A
Consists of:
P/N 980914-X133 Manual
408009
160-pin Mating Connector 160 Pin Conn. Kit with pins 407664
Cable Assy. 6ft, Sleeved 160 Pin Cable Assy, 6 Ft, 24 AWG 407408-001
Additional Manual 1260-X133 Manual 980914-X133

1260-X133 User Manual
Specifications 1-6 Racal Instruments ©2005
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1260-X133 User Manual
Racal Instruments ©2005 Installation Instructions 2-1
Chapter 2
INSTALLATION INSTRUCTIONS
Unpacking and
Inspection 1. Before unpacking the switching module, check the exterior of
the shipping carton for any signs of damage. All irregularities
should be noted on the shipping bill and reported.
2. Remove the instrument from its carton, preserving the factory
packaging as much as possible.
3. Inspect the switching module for any defects or damage.
Immediately notify the carrier if any damage is apparent.
4. Have a qualified person check the instrument for safety
before use.
CAUTION
The instrument contains ESD-sensitive devices. Open
the package at an ESD-safe work station.
Reshipment
Instructions 1. Use the original packing material when returning the
switching module to Racal Instruments for servicing. The
original shipping carton and the instrument’s plastic foam will
provide the necessary support for safe reshipment.
2. If the original packing material is unavailable, wrap the
switching module in an ESD shielding bag and use plastic
spray foam to surround and protect the instrument.
3. Reship in either the original or a new shipping carton.

1260-X133 User Manual
Installation Instructions 2-2 Racal Instruments ©2005
Installation Installation of the 1260-X133 Switching Module into a 1260-100X
Adapt-a-Switch Carrier assembly is described in the “Installation”
section of the 1260-100X Adapt-a-Switch Carrier manual.
For installation of the 1260-X133 into a 1256 Switching System,
refer to the 1256 User Manual.
Module
Configuration The 1260-X133 contains 20 configurable 1x4 multiplexers, 6 1x2
multiplexers and 6 configurable 1x2 multiplexers. On-board
configuration relays allow four 1x4 multiplexers to be configured in
to a 2x8 matrix, two 1x2 multiplexers to be configured into a 1x4
multiplexer.
Twenty 1x4 multiplexers are numbered from 0 through 19. Each
multiplexer (mux) is made up of four relays, referred to as
channels. Figure 2-1 shows an example of one of these
multiplexers (multiplexer 5). In this example, the inputs are
channels 50 through 53. The user may close one or more relays to
connect the inputs to the common output.
Five 2x8 matrix cells are named from X1 to X5, and numbered
from 0 to 4. Each matrix cell contains four 1x4 multiplexers which
are named from 4M1 to 4M3. Beside the 1x4 muxes, each cell also
contains 8 input configuration relays and two output configuration
relays which are number from 8x0 to 8x9 (x is from 0 to 4) as the
channels, 8x0 to 8x7 are inputs channels, 8x8 and 8x9 are outputs.
Figure 2-2 shows an example of one of 2x8 matrix cells (X3).
Six 1x2 multiplexers are named as Y cell, and numbered from 0
through 5 with 200 offset. Each multiplexer (mux) is made up of
two relays, referred to as channels. Figure 2-3 shows an example
of one of these multiplexers (multiplexer 5). In this example, the
inputs are channels 250 through 251. The user may close one or
both relays to connect the inputs to the common output.
Six configurable 1x2 multiplexers are numbered from 0 through 5
with 400 offset. Each 1x2 multiplexer (mux) is made up of two
relays, referred to as channels. Three 1x4 mux can be configured
from these six 1x2 mux and three output configuration relays. They
are named from Z1 to Z3. The output configuration relays for three
1x4 muxs are numbered 501, 503 and 505 as channels. Figure 2-
4shows an example of one of these 1x4 multiplexers (multiplexer
2&3). In this example, the inputs are channels 420 through 421
and 430 through 431. The user may close one or more relays to
connect the inputs to the common output.

1260-X133 User Manual
Racal Instruments ©2005 Installation Instructions 2-3
CH50 IN
CH51 IN
CH53 IN
CH52 IN MUX 5 COM OUT
Figure 2-1 Single 1x4 Multiplexer Example (Channels 50 through 53)
4-1X4 Mux, 1- 2X8 Matrix
4M1
4M2
4M3
4M4
T
a
T
a
T
a
T
a
T
a
T
a
T
a
T
a
T
b
T
b
T
b
T
b
T
b
T
b
T
b
1x4 IN
1x4 IN
1x4 IN
1x4 IN
T
b
2x8 ROW
2X8 COL
1x4 OUT
7
5
6
3
2
4
7
5
6
3
2
4
IN1
IN2
IN3
IN4
IN1
IN2
IN3
IN4
IN1
IN2
IN3
IN4
IN1
IN2
IN3
IN4
8 Relays 16 Relays 2 Relays
2X8 COL
1x4 OUT
7
5
6
3
2
4
4M1_C
4M2_C
4M3_C
4M4_C
CH828
CH829
CH820
CH821
CH822
CH823
CH824
CH825
CH826
CH827
Symbol Key
4M =
7
5
6
3
2
4
T
b
=
T
a
=
Single
Relay
Figure 2-2 Single 2x8 Matrix Example

1260-X133 User Manual
Installation Instructions 2-4 Racal Instruments ©2005
IN1
IN2 COM
CH250
CH251
Figure 2-3 Single 1x2 Multiplexer Example (Channels 250 through 251)
2M1
2M2
1x2 OUT
OR
1x4 OUT
1x2 OUT
3
2
4
IN1
IN1
IN2
IN2
2M1_C
2M2_C
CH420
CH421
CH430
CH431
CH503
Figure 2-4 Single 1x4 Configurable Multiplexer Example (Channels 420 through 431)
Since each channel is independently controlled, the user can
simultaneously connect any combination of mux inputs to the
common output of the same multiplexer.
For example, referring to Figure 2-1, the user may connect the
channel 51 and channel 53 inputs to the common output by closing
the channel 51 and channel 53 relays at the same time. Taking this
concept further, the user could even close the relays for channels 50
through 53 all at the same time, connecting all of this multiplexer’s
inputs to its common output.
From Figure 2-1 to Figure 2-4 are just showing the single examples
for different configurations on 1260-X133. For an entire block diagram
of 1260-X133, refer to Figure 2-5.

1260-X133 User Manual
Racal Instruments ©2005 Installation Instructions 2-5
4-1X4 Mux, 1- 2X8 Matrix -
5 Cells Total (X1 to X5)
4M1
4M2
4M3
4M4
T
a
T
a
T
a
T
a
T
a
T
a
T
a
T
a
T
b
T
b
T
b
T
b
T
b
T
b
T
b
1x4 IN
1x4 IN
1x4 IN
1x4 IN
T
b
2x8 ROW
2X8 COL
1x4 OUT
7
5
6
3
2
4
7
5
6
3
2
4
IN1
IN2
IN3
IN4
IN1
IN2
IN3
IN4
IN1
IN2
IN3
IN4
IN1
IN2
IN3
IN4
8 Relays 16 Relays 2 Relays
130 Relays
100 I/O Signals
15 Relays
18 I/O Signals
2X8 COL
1x4 OUT
7
5
6
3
2
4
2-1x2 OR 1-1X4
3 Cells Total (Z1 to Z3)
2M1
2M2
1x2 OUT
OR
1x4 OUT
1x2 OUT
3
2
4
12 Relays
18 I/O Signals
1-1x2
6 Cells Total
(_Y, 2M1 to 2M6)
2M1 to 2M6
IN1
IN2 C
IN1
IN1
IN2
IN2
4M1_C
4M2_C
4M3_C
4M4_C
2M1_C
2M2_C
CH2x0
CH2x1
CH4x0
CH4x1
CH4x0
CH4x1
CH50x
CH8x8
CH8x9
CH8x0
CH8x1
CH8x2
CH8x3
CH8x4
CH8x5
CH8x6
CH8x7
x is from 0 to 5
x is from 0 to 5 x is 1,3,5
x is from 0 to 4
Figure 2-5 1260-X133 Block Diagram

1260-X133 User Manual
Installation Instructions 2-6 Racal Instruments ©2005
Connector Pin
Assignments Table 2-1 provides the pin assignments for the front panel
connector.
Table 2-1 1260-X133 Front-Panel Connections for J200
Cell 1x4 MUX /
1X2 MUX Mux Channel Pin
0 Mux 0 Common A19
0 0 A32
0 1 A29
0 2 A26
4M1
0 3 A23
1 Mux 1 Common A16
1 10 A12
1 11 A9
1 12 A6
4M2
1 13 A3
2 Mux 2 Common A17
2 20 A30
2 21 A27
2 22 A24
4M3
2 23 A21
3 Mux 3 Common A14
3 30 A10
3 31 A7
3 32 A4
X1
4M4
3 32 A1
4 Mux 4 Common B19
4 40 B32
4 41 B29
4 42 B26
4M1
4 43 B23
5 Mux 5 Common B16
5 50 B12
5 51 B9
5 52 B6
X2
4M2
5 53 B3