Racal Instruments 1260-50A User manual

1260 VXI
SWITCHING CARD
1260-50A/B
200MHz
MULTIPLEXER MODULE
PUBLICATION NO. 980673-015
RACAL INSTRUMENTS
Racal Instruments, Inc.
4 Goodyear St., Irvine, CA 92618-2002
Tel: (800) RACAL-ATE, [phone], [phone]; FAX: [phone]
Racal Instruments, Ltd.
480 Bath Road, Slough, Berkshire, SL1 6BE, United Kingdom
Tel: [phone]; FAX: [phone]
Racal Systems Electronique S.A.
18 Avenue Dutartre, 78150 LeChesnay, France
Tel: [phone]; FAX: [phone]
Racal Systems Elettronica s.r.l.
Strada 2-Palazzo C4, 20090 Milanofiori Assago, Milan, Italy
Tel: [phone]; FAX [phone]
Racal Elektronik System GmbH.
Technologiepark Bergisch Gladbach, Friedrich-Ebert-Strasse, D-51429 Bergisch Gladbach, Germany
Tel.: [phone]; FAX: [phone]
Racal Australia Pty. Ltd.
3 Powells Road, Brookvale, NSW 2100, Australia
Tel: [phone], FAX: [phone]
Racal Electronics Pte. Ltd.
26 Ayer Rajah Crescent, 04-06/07 Ayer Rajah Industrial Estate, Singapore 0513.
Tel: [phone], FAX: [phone]
Racal Instruments, Ltd.
Unit 5, 25F., Mega Trade Center, No 1, Mei Wan Road, Tsuen Wan, Hong Kong, PRC
Tel: [phone], FAX: [phone]
http://www.racalinstruments.com
PUBLICATION DATE: March 26, 2001
Copyright 2001 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.

WARRANTY STATEMENT
All Racal Instruments, Inc. products are designed and manufactured to exacting standards and in full
conformance to Racal’s ISO 9001 procedures.
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: [e-mail]
Telephone: [phone] (USA)
[phone] (UK)
[phone] (Hong Kong)
Fax: [phone] (USA)
[phone] (UK)
[phone] (Hong Kong)
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:
[e-mail].
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.

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 instrument is configured to operate on the voltage at the power source. See
Installation Section.
2. Ensure the proper fuse is in place for the power source to operate.
3. 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.

Amendment 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, 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 that are available for the 1260-01T.

Control Information for the 1260-50A and –50C
The following information describes the control-register-to-relay-channel mapping for a 1260-50A and 1260-
50C Relay Modules. This information may be used to control a 1260-50A (50C) when using a 1260-01T in the
register-based mode of operation.
Each relay on this module is controlled by setting or clearing a single bit within a Control Register. 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 from logical channels to control bits. The logical channels are used when
operating the relay module in message-based mode. The control bits within the Control Registers are used to
operate the module in register-based mode.
Each Control Register is located 2 addresses from the previous Control Register. That is, each Control
Register is located at an odd address. 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.
Channel Control Register Control Bit
002
100
201
303
404
10 1 0
11 0 6
12 0 7
13 1 1
14 1 2
19 0 5
20 1 6
21 1 5
22 1 6
23 1 7
24 2 0
29 1 3
30 2 4
31 2 2
32 2 3
33 2 5
34 2 6
39 2 1
40 3 2
41 3 0
42 3 1
43 3 3
44 3 4
49 2 7
50 5 5
51 5 6
52 5 2
53 5 4
54 5 3
59 3 5
60 4 7
61 4 5
62 4 4
63 4 6
64 5 0
69 5 7
70 4 1
71 3 7
72 3 6

Channel Control Register Control Bit
73 4 0
74 4 2
79 5 1
80 6 3
81 6 1
82 6 0
83 6 2
84 6 4
89 4 3
90 7 1
91 6 7
92 6 6
93 7 0
94 7 2
99 6 5
100 7 6
101 7 4
102 7 5
103 7 7
104 8 0
109 7 3
110 8 4
111 8 2
112 8 3
113 8 5
114 8 6
119 8 1
120 9 2
121 9 0
122 9 1
123 9 3
124 9 4
129 8 7
130 10 0
131 9 6
132 9 7
133 10 1
134 10 2
139 9 5
140 10 6
141 10 4
142 10 5
143 10 7
144 11 0
149 10 3
150 11 4
151 11 2
152 11 3
153 11 5
154 11 6
159 11 1

Control Information for the 1260-50B and –50D
The following information describes the control-register-to-relay-channel mapping for a 1260-50B and 1260-
50D Relay Modules. This information may be used to control a 1260-50B (50D) when using a 1260-01T in the
register-based mode of operation.
Each relay on this module is controlled by setting or clearing a single bit within a Control Register. 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 from logical channels to control bits. The logical channels are used when
operating the relay module in message-based mode. The control bits within the Control Registers are used to
operate the module in register-based mode.
Each Control Register is located 2 addresses from the previous Control Register. That is, each Control
Register is located at an odd address. 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.
Channel Control Register Control Bit
002
100
201
303
404
10 1 0
11 0 6
12 0 7
13 1 1
14 1 2
19 0 5
20 1 6
21 1 5
22 1 6
23 1 7
24 2 0
29 1 3
30 2 4
31 2 2
32 2 3
33 2 5
34 2 6
39 2 1
40 3 2
41 3 0
42 3 1
43 3 3
44 3 4
49 2 7
50 5 5
51 5 6
52 5 2
53 5 4
54 5 3
59 3 5
60 4 7
61 4 5
62 4 4
63 4 6
64 5 0
69 5 7
70 4 1
71 3 7
72 3 6

Channel Control Register Control Bit
73 4 0
74 4 2
79 5 1

User Manual 1260-50A/B
i
Table of Contents
Chapter 1
INTRODUCTION..........................................................................................................................1-1
1260-50A/B 200MHz Multiplexer Module...................................................................................1-1
Specifications............................................................................................................................1-3
Chapter 2
INSTALLATION INSTRUCTIONS.................................................................................................2-1
Unpacking and Inspection.........................................................................................................2-1
Reshipment Instructions............................................................................................................2-1
Option 01 Installation.................................................................................................................2-1
Module Installation.....................................................................................................................2-1
Chapter 3
MODULE SPECIFIC SYNTAX......................................................................................................3-1
1260-50A/B Module Specific Syntax..........................................................................................3-1
Syntax....................................................................................................................................3-1
OPEN and CLOSE.............................................................................................................3-1
PSETUP.............................................................................................................................3-2
PDATAOUT........................................................................................................................3-2
Chapter 4
DRAWINGS..................................................................................................................................4-1
Chapter 5
PARTS LIST.................................................................................................................................5-1
Chapter 6
PRODUCT SUPPORT..................................................................................................................6-1
Product Support ........................................................................................................................6-1
Reshipment Instructions............................................................................................................6-1
Support Offices .........................................................................................................................6-2

User Manual 1260-50A/B
ii
List of Figures
Figure 1-1, 1260-50A/B ................................................................................................................1-1
Figure 1-2, 1260-50A/B Functional Diagram.................................................................................1-2
Figure 1-3, 1260-50A/B Front Panel and J200-J203 Connector Pin Configuration...................... 1-5

User Manual 1260-50A/B
Introduction 1-1
Chapter 1
INTRODUCTION
1260-50A/B
200MHz
Multiplexer
Module
The 1260-50A/B provides eight/sixteen 1 x 4 multiplexers (refer
to the Functional Diagram Figure 1-2). Relays CHI9, 29,..., 159
provide for the connections between the adjacent I x 4 groups
under software control. Thus, the 1260-50A/B module can be
configured as multiplexers up to I x 39/1 x 79 size. The 200 MHz
bandwidth is guaranteed for all possible multiplexer sizes. The
only restriction is the groups not needed for a connection
between any two channels have to be disconnected to achieve
200 MHz bandwidth.
Figure 1-1, 1260-50A/B

User Manual 1260-50A/B
Introduction 1-2
Figure 1-2, 1260-50A/B Functional Diagram
E
D
C
B
A
L
K
J
H
F
S
R
P
N
M
X
W
V
U
T
E
D
C
B
A
L
K
J
H
F
S
R
P
N
M
X
W
V
U
T
E
D
C
B
A
L
K
J
H
F
S
R
P
N
M
X
W
V
U
T
E
D
C
B
A
L
K
J
H
F
S
R
P
N
M
X
W
V
U
T
J200 J201 J202 J203
K5 CH04
K4 CH03
K2 CH02
K1 CH01
K3 CH00
K6
CH19 K30
CH59 K54 CH99 K78 CH139
K11 CH14
K10 CH13
K8 CH12
K7 CH11
K9 CH10
K12
CH29
K18
CH39
K24
CH49
K48
CH69 K60 CH109 K84 CH149
K42
CH79 K66 CH119 K90 CH159
K72
CH129
K36
CH89
K29 CH44
K28 CH43
K25 CH42
K25 CH41
K27 CH40
K53 CH84
K51 CH83
K49 CH82
K50 CH81
K52 CH80
K77 CH124
K76 CH123
K74 CH122
K73 CH121
K75 CH120
K44 CH54
K45 CH53
K43 CH52
K47 CH51
K46 CH50
K59 CH94
K57 CH93
K55 CH92
K56 CH91
K58 CH90
K83 CH134
K82 CH133
K80 CH132
K79 CH131
K81 CH130
K17 CH24
K16 CH23
K14 CH22
K13 CH21
K15 CH20
K41 CH64
K39 CH63
K37 CH62
K38 CH61
K40 CH60
K65 CH104
K64 CH103
K62 CH102
K61 CH101
K63 CH100
K89 CH144
K88 CH143
K86 CH142
K85 CH141
K87 CH140
K23 CH34
K22 CH33
K20 CH32
K19 CH31
K21 CH30
K35 CH74
K33 CH73
K31 CH72
K32 CH71
K34 CH70
K71 CH114
K70 CH113
K69 CH112
K67 CH111
K69 CH110
K95 CH154
K94 CH153
K92 CH152
K91 CH151
K93 CH150
1260-50A
1260-50B

User Manual 1260-50A/B
Introduction 1-3
Specifications Minimum Option 01 Firmware Revision
User Connector
Maximum Switchable Voltage
(Signal to Ground)
Maximum Switchable Current Per
Channel
Maximum Carry Current Per Channel
Life Expectancy
Typical at Signal Level <1.0 V, .010 A
DC Performance
Path Resistance
AC Performance
Impedance
Bandwidth (-3 dB)
Insertion Loss
(1 x 4 Multiplexer)
Crosstalk Across Groups 50 Ohm
Termination
Isolation Between Channels 50 Ohm
Termination
VSWR (50 Ohm Termination) (1 x 4
Multiplexer)
18.1
GMCT Series Crimp
Shielded Contact
from ERNI
200V DC/Peak AC
Resistive Load
0.5A DC/Peak AC
Resistive Load
1 A DC/Peak AC
Resistive load
250 x 106
<0.7 Ohm
50 Ohm
>200 MHz
<0.70 dB at 100 MHz
10 MHz: <= -40 dB
100 MHz: <= -40 dB
200 MHz: <= -35 dB
10 MHz: <= -40 dB
100 MHz: <= -40 dB
200 MHz: <= -35 dB
1.3 :1 at 100 MHz

User Manual 1260-50A/B
Introduction 1-4
Rise Time
(Typical I x 4 Multiplexer)
Fall Time
(Typical 1 x 4 Multiplexer)
Propagtion Delay Time
(Typical I x 4 Multiplexer)
Switching Time
Cooling Requirements
Airflow
Backpressure
Power Requirements ('pm)
+5 V
+12 V
Weight
1.6 ns
1.6 ns
3 ns
39 ±5mS
4 litres / sec
0.5 mm H20
2.5 A
0.5 A
1.174 Kg (2.59 lbs)
without Option Ol
1.315 Kg (2.90 lbs)
with Option Ol
Coaxial Cable, Optional Racal Instruments P/N Length, Feet Insert ion Loss
@200 MHz VSWR @ 100 MHz
407184-001 2 <.5 dB 1.2:1
407184-003 6 < 1.0 dB 1.2:1
407184-006 12 <2.0 dB 1.2 :1
Coaxial cables have been tested to 1GHz, and are available as
an option. Each cable contains a coaxial pin at each end. The
cables are available in 2, 6, and 12 feet, and can be cut by
customers to any length. (Example: The 6-foot cable can be cut
to two 3-foot or one 2-foot and one 4-foot cable.) Coax pins (P/N
602144-900) may be purchased separately. The 1260-SOA
requires 40, and the 1260-SOB requires 80. To crimp coaxial
pins, use crimp tool TMDC 16CX4 from Hughes or Die #X-530
and Handle # HX3 from Daniels.

User Manual 1260-50A/B
Introduction 1-5
Figure 1-3, 1260-50A/B Front Panel
and J200-J203 Connector Pin Configuration
ABC
DF
E
HK
J
LN
M
PRS
TV
X
WU
ABC
DF
E
HK
J
LN
M
PRS
TV
X
W
U
ABC
DF
E
HK
J
LN
M
PRS
TV
X
WU
FAIL
Racal
Instruments
1260-50A
J
2
0
0
J
2
0
1
!
!
ABC
DF
E
HK
J
LN
M
PRS
TV
X
WU
ABC
DF
E
HK
J
LN
M
PRS
TV
XW U
ABC
DF
E
HK
J
LN
M
PRS
TV
X
WU
ABC
DF
E
HK
J
LN
M
PRS
TV
XW U
FAIL
Racal
Instruments
1260-50B
J
2
0
2
J
2
0
3
!
!
J
2
0
0
J
2
0
1
!
!

User Manual 1260-50A/B
Introduction 1-6
This page was left intentionally blank.

User Manual 1260-50A/B
Installation Instructions 2-1
Chapter 2
INSTALLATION INSTRUCTIONS
Unpacking and
Inspection 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. Remove the instrument from its
carton, preserving the factory packaging as much as possible.
Inspect the switching module for any defect or damage.
Immediately notify the carrier if any damage is apparent. Have a
qualified person check the instrument for safety before use.
Reshipment
Instructions Use the original packing when returning the switching module to
Racal Instruments for calibration or servicing. The original
shipping carton and the instrument’s plastic foam will provide
the necessary support for safe reshipment. If the original
packing is unavailable, wrap the switching module in plastic
sheeting and use plastic spray foam to surround and protect the
instrument. Reship in either the original or a new shipping
carton.
Option 01
Installation Installation of the Option 01 to the 1260-50A/B is described in
the Installation section of the 1260 Series VXI Switching Cards
Manual.
Module
Installation Installation of the 1260-50A/B Switching Module into a VXI
mainframe, including the setting of DIP switches, is described in
the Installation section of the 1260 Series VXI Switching Cards
Manual. The ID byte DIP switch, SW1-5 should be set OFF for
the 1260-50A module and ON for the 1260-50B module.

User Manual 1260-50A/B
Installation Instructions 2-2
This page was left intentionally blank.

User Manual 1260-50A/B
Module Specific Syntax 3-1
Chapter 3
MODULE SPECIFIC SYNTAX
1260-50A/B
Module Specific
Syntax
NOTE
The 1260-50A/B Coaxial switching module is
supported by the Option 01 Operating Systems at
Revision levels 18.1 and above.
The 1260-50A/B RF Multiplexer supports the OPEN, CLOSE,
PSETUP, RESET and PDATAOUT commands.
Syntax The module specific syntax for the 1260-50A/B RF Multiplexer is
as follows:
OPEN and CLOSE OPEN <module address>.<channel>[ ;<module address> . <channel>J
where <module address> is the address.
<channel> is the relay to be closed to connect an input to
the output.
Note that Channels remain closed until opened by an OPEN
command, RESET command, VXI hard or soft reset or power-
off.
The range of values for <channel> is:
1260-50A: ............................................................00-04, 10-14, 1
9
50-54, 59, 60-64, 69, 70-74, 79
1260-50B: 00-04, 10-14, 19 20-24, 29, 30-34, 39, 40-44, 49,
50-54, 59, 60-64, 69, 70-74, 79, 80-84, 89, 90-94,
99, 100-104, 109, 110-114, 119, 120-124, 129,
130-134, 139, 140-144, 149, 150-154, 159
The Module Specific Syntax for the CLOSE command is the
same as for the OPEN command.