Astronics RACAL INSTRUMENTS 1260-38 User manual

RACAL INSTRUMENTS™
1260-38
MULTIPLEXER/SCANNER
Publication No. 980673-037 Rev. A
Astronics Test Systems Inc.
4 Goodyear, Irvine, CA 92618
Tel: [phone]; Fax: [phone]
[e-mail] [e-mail]
[e-mail] http://www.astronicstestsystems.com
Copyright 1995 by Astronics Test Systems 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
ASTRONICS TEST SYSTEMS PRODUCT
For this product, or any other Astronics Test Systems 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.astronicstestsystems.com/support/downloads
If you have any questions about software driver downloads or our privacy policy, please contact us
at:
[e-mail]
WARRANTY STATEMENT
All Astronics Test Systems products are designed to exacting standards and manufactured in full
compliance to our AS9100 Quality Management System processes.
This warranty does not apply to defects resulting from any modification(s) of any product or part
without Astronics Test Systems 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, contact Customer Support. 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 Customer Support by:
E-Mail: [e-mail]
Telephone: [phone] (USA)
Fax: [phone] (USA)

RETURN OF PRODUCT
Authorization is required from Astronics Test Systems before you send us your product or sub-assembly for
service or calibration. Call or contact Customer Support at 1-800-722-3262 or 1-949-859-8999 or via fax at 1-
949-859-7139. We can also be reached at: [e-mail].
If the original packing material is unavailable, ship the product or sub-assembly in an ESD shielding bag and
use appropriate packing materials to surround and protect the product.
PROPRIETARY NOTICE
This document and the technical data herein disclosed, are proprietary to Astronics Test Systems, and shall
not, without express written permission of Astronics Test Systems, be used in whole or in part to solicit
quotations from a competitive source or used for manufacture by anyone other than Astronics Test Systems.
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 Astronics Test Systems.
TRADEMARKS AND SERVICE MARKS
All trademarks and service marks used in this document are the property of their respective owners.
•Racal Instruments, Talon Instruments, Trig-Tek, ActivATE, Adapt-A-Switch, N-GEN, and PAWS are
trademarks of Astronics Test Systems in the United States.
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 document and any other
instructions provided by Seller. Astronics Test Systems 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 Astronics Test Systems product could create a situation where personal
injury or death could occur. Should Buyer purchase Astronics Test Systems product for such
unintended application, Buyer shall indemnify and hold Astronics Test Systems, 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.

This page was left intentionally blank.

Publication No. 980673-037 Rev. A 1260-38 User Manual
Astronics Test Systems Addendum Page 6/98 1
NOTE FOR SYSTEMS WITH 1260-OPT 01T
The “Module-Specific Syntax” section of this manual shows the command syntax for the 1260-01S
Smart Card. If you are using the newer 1260-01T Smart Card, the commands will NOT work as
shown.
Consult the 1260-01T Manual for a description of the commands that may be used with the 1260-
01T Smart Card.
The channel numbers described in this manual are valid for the 1260-01T. The channel numbers
continue to be used for the 1260-01T.
The syntax of the commands that use channel numbers has changed for those cards controlled by
the 1260-01T.
The new syntax used to close a channel is:
CLOSE (@ <module address> ( <channel> ) )
For example, with for a relay module whose <module address> is set to 7, closing <channel> 0 is
performed with the command:
CLOSE (@ 7 (0))
Using the older 1260-01S, the command would be (as shown in this manual):
CLOSE 7.0
Many other command syntax differences exist. Please consult chapter 2 of the 1260-01T manual
for a description of the commands which are available for the 1260-01T.

1260-38 User Manual Publication No. 980673-037 Rev. A
Addendum Page 6/98 2 Astronics Test Systems
Control Information for the 1260-38A and 1260-38B
The following information describes the control-register-to-relay-channel mapping for a 1260-38A or 1260-38B
Relay Module. This information may be used to control the module when using a 1260-01T in the register-
based mode of operation.
Each channel on this module is controlled by setting or clearing a single bit. Control Registers on the module
operate 8 channels simultaneously. There are eight control bits per Control Register. Setting the bit to a 1
closes the relay; setting the bit to a 0 opens the relay.
The table below shows the mapping between logical channels used to operate the relay module in message-
based mode and the bits within the Control Registers that may be used to operate the channel in register-
based mode.
Each Control Register is located 2 addresses from the previous Control Register. This is shown in Table 2-2
of the 1260-01T manual. Control Register 0 is located at the “Base A24 Address” for the module. Consult the
“Register-Based Operation” Section of Chapter 2 of the 1260-01T manual for a description of calculating
control register addresses.
Note that when the 1260-01T message-based interface is used, ODD MUXes (channels 10 through 17, 30
through 37, channels 50 through 57, …, 150 through 157) are operated in parallel with EVEN MUXes to
operate as a 4-wire MUX. That is, when channel 0 is closed using the message-based interface with a 1260-
38B, the firmware also closes channel 10; when channel 143 is opened, the firmware opens channel 153 as
well.
Channel
Control Register
Control Bit
0
0
0
1
0
1
2
0
2
3
0
3
4
0
4
5
0
5
6
0
6
7
0
7
10*
1
0
11*
1
1
12*
1
2
13*
1
3
14*
1
4
15*
1
5
16*
1
6
17*
1
7
20
2
0
21
2
1
22
2
2
23
2
3
24
2
4
25
2
5
26
2
6
27
2
7
30*
3
0
31*
3
1
32*
3
2
33*
3
3
34*
3
4
35*
3
5
36*
3
6
37*
3
7
40
4
0
41
4
1
42
4
2
43
4
3
44
4
4
45
4
5

Publication No. 980673-037 Rev. A 1260-38 User Manual
Astronics Test Systems Addendum Page 6/98 3
Channel
Control Register
Control Bit
46
4
6
47
4
7
50*
5
0
51*
5
1
52*
5
2
53*
5
3
54*
5
4
55*
5
5
56*
5
6
57*
5
7
60
6
0
61
6
1
62
6
2
63
6
3
64
6
4
65
6
5
66
6
6
67
6
7
70*
7
0
71*
7
1
72*
7
2
73*
7
3
74*
7
4
75*
7
5
76*
7
6
77*
7
7
80
8
0
81
8
1
82
8
2
83
8
3
84
8
4
85
8
5
86
8
6
87
8
7
90*
9
0
91*
9
1
92*
9
2
93*
9
3
94*
9
4
95*
9
5
96*
9
6
97*
9
7
100
10
0
101
10
1
102
10
2
103
10
3
104
10
4
105
10
5
106
10
6
107
10
7
110*
11
0
111*
11
1
112*
11
2
113*
11
3
114*
11
4
115*
11
5
116*
11
6
117*
11
7
120
12
0
121
12
1
122
12
2
123
12
3
124
12
4
125
12
5

1260-38 User Manual Publication No. 980673-037 Rev. A
Addendum Page 6/98 4 Astronics Test Systems
Channel
Control Register
Control Bit
126
12
6
127
12
7
130*
13
0
131*
13
1
132*
13
2
133*
13
3
134*
13
4
135*
13
5
136*
13
6
137*
13
7
140
14
0
141
14
1
142
14
2
143
14
3
144
14
4
145
14
5
146
14
6
147
14
7
150*
15
0
151*
15
1
152*
15
2
153*
15
3
154*
15
4
155*
15
5
156*
15
6
157*
15
7
1000
16
1
1001**
16
2
1002**
16
0
2000
16
5
2001**
16
6
2002**
16
4
3000
17
1
3001**
17
2
3002**
17
0
4000
17
5
4001**
17
6
4002**
17
4
5000
18
1
5001**
18
2
5002**
18
0
6000
18
5
6001**
18
6
6002**
18
5
7000
19
1
7001**
19
2
7002**
19
0
8002**
19
4
9000
16
3
9001
16
7
9002
17
3
9003
17
7
9004
18
3
9005
18
7
9006
19
3
9007
19
5
* This channel is operated automatically by the firmware for the 1260-38B when controlled using the message-
based interface. This channel is NOT programmable when using the message-based interface for the 1260-
38B. This channel is set to the same state as the corresponding even MUX channel (e.g. when channel 127
is closed, channel 137 is closed automatically by the firmware; when channel 24 is opened, channel 34 is also
opened by the firmware).
** This channel is not available when programming a 1260-38B in message-based mode.

Publication No. 980673-037 Rev. A 1260-38 User Manual
Astronics Test Systems i
Table of Contents
Chapter 1............................................................................................................................1-1
MODULE SPECIFICATION ..........................................................................................................1-1
Introduction ...............................................................................................................................1-1
1260-38 Module Specification ...................................................................................................1-2
Ordering Information .................................................................................................................1-5
Safety........................................................................................................................................1-5
Chapter 2............................................................................................................................2-1
INSTALLATION INSTRUCTIONS.................................................................................................2-1
Unpacking and Inspection.........................................................................................................2-1
Option 01 Installation.................................................................................................................2-1
Module Installation.....................................................................................................................2-2
1260-38 ID Byte ........................................................................................................................2-2

1260-38 User Manual Publication No. 980673-037 Rev. A
ii Astronics Test Systems
Chapter 3............................................................................................................................3-1
MODULE OPERATION ................................................................................................................3-1
Module Configuration................................................................................................................3-1
Two-Wire Operation ..............................................................................................................3-2
Four-Wire Operation..............................................................................................................3-2
One-Wire Operation ..............................................................................................................3-2
100ΩResistor Channels........................................................................................................3-3
Front Panel Connectors.........................................................................................................3-3
Mating Connectors.................................................................................................................3-3
1260-38 Module Specific Syntax...............................................................................................3-4
Syntax ...................................................................................................................................3-4
CLOSE Command .............................................................................................................3-5
OPEN Command ...............................................................................................................3-5
PDATAOUT Command......................................................................................................3-5
PSETUP Command...........................................................................................................3-6
Chapter 4............................................................................................................................4-1
OPTIONAL HARNESS ASSEMBLIES..........................................................................................4-1

Publication No. 980673-037 Rev. A 1260-38 User Manual
Astronics Test Systems iii
List of Figures
Figure 1-1, 1260-38 Multiplexer / Scanner....................................................................................1-2
Figure 3-1, 1260-38 Module Configuration Block Diagram............................................................3-7
Figure 3-2, 1260-38 Multiplexer Configuration Block Diagram ......................................................3-8
Figure 3-3, 1260-38 Pin Connections, Front View.........................................................................3-9

1260-38 User Manual Publication No. 980673-037 Rev. A
iv Astronics Test Systems
List of Tables
Table 3-1, 1260-38 Channel Number/Connector Pin/Cable Mapping.......................................... 3-10

Publication No. 980673-037 Rev. A 1260-38 User Manual
Astronics Test Systems v
DOCUMENT CHANGE HISTORY
Revision Date Description of Change
A 11/11/09
Revised per EO 29960
Revised format to current standards. Company
name revised throughout manual. Manual now
revision letter controlled. Added Document
Change History Page v. Back o
f cover sheet.
Revised Warranty Statement, Return of Product,
Proprietary Notice and Disclaimer to current
standards. (Chap2-
1) Unpacking and inspection.
Revise to current standards. Removed
Reshipment Instructions in (Chap. 2-
1) and
removed (Chap 5). Information. Now appears in
first 2 sheets behind cover sheet. Updated table
of contents to reflect changes made. .
Added company name to footer/lower corner
opposite of Page no’s i thru vi.

1260-38 User Manual Publication No. 980673-037 Rev. A
vi Astronics Test Systems
This page was left intentionally blank.

Publication No. 980673-037 Rev. A 1260-38 User Manual
Astronics Test Systems Module Specification 1-1
Chapter 1
MODULE SPECIFICATION
Introduction The 1260-38 1 x 128 Two-
Wire Scanner/Multiplexer Module
consists of eight pairs of 1 x 8 multiplexers. These eight pairs of
multiplexers, in conjunction with interconnecting relays, allow the
1260-38 module to be configured as:
•One 1 x 64 Four-wire multiplexer
•One 1 x 128 Two-wire multiplexer
•One 1 x 256 One-wire multiplexer
In addition, each pair of 1 x 8 multiplexers can be independently
configured as:
•Two 1 x 8 Two-wire multiplexers
•One 1 x 16 Two-wire multiplexer
•One 1 x 32 One-wire multiplexer
•One 1 x 8 Four-wire multiplexer
Figure 3-1, 1260-38 Module Configuration Block Diagram, and
Figure 3-2, 1260-
38 Multiplexer Configuration Block Diagram,
shows a diagrammatic representation of the switch module and
multiplexer pair, respectively.

1260-38 User Manual Publication No. 980673-037 Rev. A
Module Specification 1-2 Astronics Test Systems
Figure 1-1, 1260-38 Multiplexer / Scanner
1260-38 Module
Specification Maximum Switch Power 125VA, 60W
Maximum Switch Voltage 25OVAC, 22OVDC
Maximum Switch Current 2A AC, 2A DC
Bandwidth (50Ω)
1 x 8 Configuration >30MHz
1 x 16 Configuration >30MHz
1 x 128 Configuration >2MHz
Insertion Loss (50Ω)
1 x 8 Configuration <0.10dB to 100kHz
<0.25dB to 1MHz
<1.70dB to 10MHz

Publication No. 980673-037 Rev. A 1260-38 User Manual
Astronics Test Systems Module Specification 1-3
Insertion Loss (50Ω)
1 x 128 Configuration < 0.20dB to 100kHz
< 1.00dB to 1MHz
Crosstalk (50Ω)
1 x 8 Configuration < -55dB to 100kHz
< -50dB to I MHz
< -22dB at 10MHz
Isolation (50Ω)
1 x 8 Configuration > 40dB to 100kHz
> 35dB to 1MHz
> 20dB at 10MHZ
Path Resistance
1 x 8 Configuration < 0.25Ω
1 x 128 Configuration < 0.75Ω
Thermal EMF
1 x 8 Configuration < 15µV
1 x 128 Configuration < 20µV
Impedance
High-Low > 2000MΩ
High-Chassis > 2000MΩ
Low to Chassis > 2000MΩ
Capacitance
Channel to Chassis (1 x 8) < 5pF
Channel to Chassis (1 x 128) < 5pF
High to Low (1 x 8) < 120pF
High to Low (1 x 128) < 600pF
Temperature
Operating 00C to +550C
Non-Operating 400C to +710C
Relative Humidity 95+1-5% RH Non-
Condensing < 300C
75+1-5 %RH > 300C
45+1-5 %RH > 400C

1260-38 User Manual Publication No. 980673-037 Rev. A
Module Specification 1-4 Astronics Test Systems
Altitude
Operating 10,000ft
Non-Operating 15,000ft
Vibration 0.013" double amplitude,
5-55Hz
Shock, functional 30g, 11msec, ½ sine wave
Bench Handling 4inch drop
Cooling Requirement
Without Option 01 installed
Airflow 1.0 liters/sec
Backpressure 0.05mm H20
With Option 01 installed
Airflow 2.0 liters/sec
Backpressure 0.2mm H20
Power Requirement
Without Option 01 installed
+5V Static Current, I pm 0.4A
+5V Dynamic Current, I dm 0.075A
With Option 01 installed
+5V Static Current, I pm 2.5A
+5V Dynamic Current, I dm 0.225A
+24V Static Current, I pm 6mA per energized relay
+24V Dynamic Current, I dm 0A
Weight
Without Option 01 installed 3.21b (1.45kg)
With Option 01 installed 3.51b (1.60kg)
Minimum Option 01 Firmware Revision 28.1