Racal Instruments 1260-43 User manual

1260 VXI SWITCHING CARD
THREE, 8X24 MATRIX, MODULE
MODEL 1260-43
PUBLICATION NO. 980673-067
RACAL INSTRUMENTS
United States
(Corporate Headquarters and Service Center)
4 Goodyear Street, Irvine, CA 92618
Tel: [phone]; Fax: [phone]
5730 Northwest Parkway Suite 700, San Antonio, TX 78249
Tel: [phone]; Fax: [phone]
Europe
(European Headquarters and Service Center)
18 Avenue Dutartre, 78150 LeChesnay, France
Tel: [phone]; Fax: [phone]
29-31 Cobham Road, Wimborne, Dorset BH21 7PF, United Kingdom
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: January 19, 2006
Copyright 2006 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 auto-
transformer, 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.

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1260-43 User Manual
i
Table of Contents
Chapter 1...............................................................................................................................1-1
SPECIFICATIONS...........................................................................................................................1-1
Introduction...................................................................................................................................1-1
Specifications...............................................................................................................................1-3
Ordering Information ....................................................................................................................1-4
Chapter 2...............................................................................................................................2-1
INSTALLATION INSTRUCTIONS....................................................................................................2-1
Unpacking and Inspection............................................................................................................2-1
Reshipment Instructions...............................................................................................................2-1
Module Installation .......................................................................................................................2-1
Module Configuration ...................................................................................................................2-2
Front Panel Connectors............................................................................................................2-5
Mating Cables.........................................................................................................................2-10
More About Maximum Current Ratings ..................................................................................2-11
Installation..................................................................................................................................2-11
Chapter 3...............................................................................................................................3-1
MODULE OPERATION....................................................................................................................3-1
Operating Modes..........................................................................................................................3-1
Operating The 1260-43 in Register-Based Mode.........................................................................3-1

1260-43 User Manual
ii
Chapter 4...............................................................................................................................4-1
PRODUCT SUPPORT.....................................................................................................................4-1
Product Support ...........................................................................................................................4-1
Reshipment Instructions...............................................................................................................4-1
Support Offices.............................................................................................................................4-2
AppendixA..........................................................................................................................A-1
LOGICAL RELAY LAYOUT............................................................................................................A-1
AppendixB..........................................................................................................................B-1
1260-43 RELAY LAYOUT...............................................................................................................B-1

1260-43 User Manual
iii
List of Figures
Figure 1-1, The 1260-43..................................................................................................................1-2
Figure 2-1, 1260-43, Physical Block Diagram..................................................................................2-3
Figure 2-2, 1260-43, Logical Block Diagram....................................................................................2-4
Figure 2-3, Front Panel Connector Numbering................................................................................2-5
Figure 3-1, Register-Based Mode of Operation...............................................................................3-1
List of Tables
Table 2-1, 1260-43 Front Panel Pinouts..........................................................................................2-6
Table 2-2, Mating Cable Manufactures..........................................................................................2-10
Table 3-1, Control/ Status Register Address Offset Assignments...................................................3-3
Table 3-2, Control/ Status Register Relay Assignments................................................................3-10

1260-43 User Manual
iv
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1260-43 User Manual
Racal Instruments ©2006 Specifications 1-1
Chapter 1
SPECIFICATIONS
Introduction
The 1260-43 is an ultra high-density matrix switch card. Each
module consists of three 8x24 matrices, which are interconnected
via a 10 lane bus. On-board configuration relays allow software
control of the matrix configuration.
Multiple modules can be linked together via a front panel 10 Lane
bus to form larger matrices. This allows the user to construct very
large Matrices.
With its combination of density, versatility, expandability, and
excellent signal integrity, the 1260-43 is ideal for constructing large
switching systems. It allows great flexibility in the connection of a
large numbers of instruments to a large number of test points.
The 1260-43 is an excellent choice for continuity, audio, video,
telecom, datacom, and ATE systems testing.
An Option 01T is required to communicate with any set of switch
cards. Provisions for an Option 01T is not provided for on the
1260-43. Another switch card must be in the system that has an
Option 01T installed in order for the 1260-43 to work.
The following features are included in the 1260-43
•Data-Driven embedded descriptor, allowing immediate use
with any Option-01T switch controller, regardless of
firmware revision level.
•Three 8x24 Matrices in a Single VXI Slot
•10 Lane Matrix expansion Bus
•Programmable Load Terminations
•Link Multiple modules via the front panel
Each switch can handle current up to 2 Amps. The 1260-43 plug-in
fits into a standard VXI chassis.

1260-43 User Manual
Specifications 1-2 Racal Instruments ©2006
Figure 1-1, The 1260-43

1260-43 User Manual
Racal Instruments ©2006 Specifications 1-3
Specifications Bandwidth (-3dB) 40 MHz
Isolation
100 KHz > 80 dB
1 MHz > 70 dB
10 MHz > 45 dB
Insertion Loss
10 MHz < 1 dB
40 MHz < 3 dB
Crosstalk
100 KHz < -70 dB
1 MHz < -60 dB
10 MHz < -50 dB
Switching Voltage
AC 250 V, Max
DC 220 V, Max
Switching Current
AC 2 A, Max.
DC 2 A, Max
Switching Power
60W, 62.5 VA, Max
Path resistance < 900 mΩ@ 2A
Capacitance
Shunt < 0.5 uF
Crosstalk < 0.36 uF
Insulation resistance > 109Ω
Relay Settling Time < 10 ms
Shock 30g, 11 ms, ½ sine wave
Vibration 0.013 in. P-P, 5-55 Hz
Bench Handling 4 in., 45°
Cooling Airflow: 5.6 liters/sec
Backpressure: 0.59 mm H2O
Temperature
Operating 0°C to +55°C
Non-operating -40°C to +75°C
Relative Humidity 85%, non-condensing at < 30°C

1260-43 User Manual
Specifications 1-4 Racal Instruments ©2006
Altitude
Operating 10,000 feet*
Non-operating 15,000 feet
Power Requirements
(for 20 mA per energized relay)
8.5 A max. @ +5V
Weight 4.62 lbs
MTBF (including relays) 25,535 hours (MIL-HDBK-217E)
Relay Life Expectancy
Mechanical 1X108operations
Electrical 500,000 operations at 30V / 1A
Dimensions (Module) C-Size, Single Slot VXI bus Module
*Operation at 15,000 feet requires de-rating of maximum overall
power dissipation to 49W.
Ordering
Information Listed below are part numbers for the 1260-43 switch module. The
1260-43 uses an IDC type of mating connector.
ITEM DESCRIPTION PART #
1260-43 Switch Module 1260-43, 3, 8 x 24, 1-wire, 2A, Multiplexer 408006
Interconnecting Bus Cable Cable, 1260-43, 20 Position, 4” 602715-001
I/O Bus Cable Cable, 1260-43, 20 Position, 3’ 602715-002
I/O Bus Cable Cable, 1260-43, 34 Position, 3’ 602715-003
Additional Manual 980673-067

1260-43 User Manual
Racal Instruments ©2006 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.
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.
Module
Installation Installation of the 1260-43 Switching Module into a VXI mainframe,
including the setting of switches SW1-1 through SW1-4, is
described in the Setup Section of the 1260A Option 01T Users
Manual, Publication No. 980806-999.

1260-43 User Manual
Installation Instructions 2-2 Racal Instruments ©2006
Module
Configuration
The 1260-43 is an ultra high-density matrix switch card. Each
module consists of three 8x24, single wire matrices, which are
interconnected via a 10 lane bus. On-board configuration relays
allow software control of the matrix configuration.
The 1260-43 is comprised of three boards, the 405237, 405249
and the 405250. The 405249 is the main controller board, used in
interfacing to the VXI bus and thus has all the control logic for
communicating with the bus. In addition the control board decodes
the address’s that select the relay enable read/write ports. The
405237 is the relay board and contains 900 relays of which 450
relays are on top with another 450 relays on the bottom. The
405249 (control board) connects to the 405237 (relay board) via
four 250 pin flex cables. The flex cables pass the relay coil
enabling signals from the control board to the relay board. The
405250 is the interface board and contains 8 connectors used to
connect to the outside world. The interface board connects to the
relay board using two 80 pin flex cables.
The 405250 board shifts the ‘Output Bus’ one position to the left
before connecting to J207. This is transparent to the user and is
done in order for the 1260-43 to be compliant with the IFTE
specification when daisy-chaining two or more 1260-43’s together.
This shift eliminates the need to place the shift in the daisy-
chaining cable. Thus the daisy-chaining cable becomes point-to-
point.

1260-43 User Manual
Racal Instruments ©2006 Installation Instructions 2-3
For a block diagram of the 1260-43, refer to both
Figure 2-1 and Figure 2-2.
Figure 2-1, 1260-43, Physical Block Diagram

1260-43 User Manual
Installation Instructions 2-4 Racal Instruments ©2006
Figure 2-2, 1260-43, Logical Block Diagram

1260-43 User Manual
Racal Instruments ©2006 Installation Instructions 2-5
Front Panel
Connectors The 1260-43 has six 34-pin front-panel connectors, labeled J200-
J205 and two 20-pin connectors, labeled J206 and J207. Each
matrix consists of a pair of 34-pin connectors. The two 20-pin
connectors are used for bussing the 10 lane bus in and out of the
1260-43. See Figure 2-3 for front panel connector locations. Table
2-1 shows the signal assignments to connector pins.
Figure 2-3, Front Panel Connector Numbering

1260-43 User Manual
Installation Instructions 2-6 Racal Instruments ©2006
Table 2-1, 1260-43 Front Panel Pinouts
J200
1 GND 2 O23C+
3 GND 4 O21C+
5 GND 6 O19C+
7 GND 8 O17C+
9 GND 10 O15C+
11 GND 12 O13C+
13 GND 14 O11C+
15 GND 16 O9C+
17 GND 18 O7C+
19 GND 20 O5C+
21 GND 22 O3C+
23 GND 24 O1C+
25 GND 26 I7C+
27 GND 28 I5C+
29 GND 30 I3C+
31 GND 32 I1C+
33 NC 34 NC
J201
1 GND 2 O24C+
3 GND 4 O22C+
5 GND 6 O20C+
7 GND 8 O18C+
9 GND 10 O16C+
11 GND 12 O14C+
13 GND 14 O12C+
15 GND 16 O10C+
17 GND 18 O8C+
19 GND 20 O6C+
21 GND 22 O4C+
23 GND 24 O2C+
25 GND 26 I8C+
27 GND 28 I6C+
29 GND 30 I4C+
31 GND 32 I2C+
33 NC 34 NC