Racal Instruments 1266 User manual

RACAL INSTRUMENTS
1266
4 Slot VXI Mainframe
PUBLICATION NO. 980880
EADS North America Defense Test and Services, Inc.
4 Goodyear, Irvine, CA 92618
Tel: [phone]; Fax: [phone]
[email protected]
[email protected]
[email protected]
http://www.eads-nadefense.com
PUBLICATION DATE: May 23, 2006
Copyright 2003 by EADS North America Defense Test and Services, 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.

v
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If you have any questions about software driver downloads or our privacy policy, please contact us at
[email protected]
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For the specific terms of your standard warranty, or optional extended warranty or service agreement, contact
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vi
PROPRIETARY NOTICE
This document and the technical data herein disclosed, are proprietary to EADS North America Defense Test
and Services, Inc., and shall not, without express written permission of EADS North America Defense Test
and Services, Inc., be used, in whole or in part to solicit quotations from a competitive source or used for
manufacture by anyone other than EADS North America Defense Test and Services, Inc. The information
herein has been developed at private expense, and may only be used for operation and maintenance
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Buyer acknowledges and agrees that it is responsible for the operation of the goods purchased and should
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vii
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.

viii

Table of Contents
Racal 1266 4-Slot C-Size VXI Mainframe Manual
Contents ix
Chapter 1
Getting Started ............................................................................................................1-1
Chapter Overview ......................................................................................................1-1
Product Overview ......................................................................................................1-1
Initial Mainframe Setup .............................................................................................1-3
AC Power Requirements ....................................................................................1-3
Positioning the Mainframe for Adequate Cooling .............................................1-3
Connecting Permanent Earth Ground ...............................................................1-4
Installing VXI Instruments ........................................................................................1-5
Slot 0 Functions ..................................................................................................1-5
Installation Guidelines ........................................................................................1-5
Installing C-Size Instruments .............................................................................1-6
Front Panel Features .................................................................................................1-6
Chapter 2
Installing Mainframe Options .................................................................................2-1
Chapter Overview ......................................................................................................2-1
Rack Mounting Using Rack Slide Kit .......................................................................2-2
Parts List .............................................................................................................2-2
Installation Procedure .........................................................................................2-2
Rack Mounting Using Support Rail Kit ..................................................................2-12
Parts List ...........................................................................................................2-12
Installation Procedure .......................................................................................2-12
Installing Intermodule Chassis Shields....................................................................2-20
Parts List ...........................................................................................................2-20
Installation Procedure .......................................................................................2-20
Installing the Airflow Restricter Kit ........................................................................2-22
Chapter 3
Servicing the Mainframe ............................................................................................3-1
Chapter Overview ......................................................................................................3-1
Replaceable Parts List................................................................................................3-1
Problem Isolation .......................................................................................................3-2
Replacing Mainframe Components ...........................................................................3-2
Removing Mainframe Accessory Items .............................................................3-3
Removing the Mainframe Cover ........................................................................3-4
Replacing the Power Supply Assembly ............................................................3-5
Replacing the Monitor Board .............................................................................3-6
Replacing the Fan Assembly ..............................................................................3-7
Replacing the Front Panel Tapped Strip ............................................................3-8
Cleaning Instructions ................................................................................................3-9
Appendix A
1266 Product Specifications ...................................................................................... A-1
Product Description .................................................................................................. A-1
Product Dimensions .......................................................................................... A-1
Options and Accessories ................................................................................... A-2

x Contents
General VXI Specifications .............................................................................. A-2
Monitor Specifications ...................................................................................... A-3
Backplane Specifications .................................................................................. A-3
Power Specifications................................................................................................. A-3
Total Usable Power ........................................................................................... A-4
Peak and Dynamic Current ............................................................................... A-4
Output Voltage .............................................................................................A-4
Power Input ....................................................................................................... A-5
Cooling Specifications.............................................................................................. A-5
Cooling Table ................................................................................................... A-6
Cooling Chart .................................................................................................... A-6
Safety/Environmental Specifications........................................................................ A-6
Environmental Specifications ...........................................................................A-7
Electromagnetic Compliance/Safety Specifications .........................................A-7
Power Supply Protection ................................................................................... A-8
Repair ................................................................................................................ A-9
Index ............................................................................................................................... I-1

Getting Started 1-1Chapter 1
Chapter 1
Getting Started
Chapter Overview
Chapter contents are:
•Product Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1
•Initial Mainframe Setup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3
•Installing VXI Instruments . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-5
•Front Panel Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-6
Product Overview
The 1266 VXI mainframe is designed in full compliance with VXIbus
specification revision 1.4 and VMEbus system specification revision C.1.
The mainframe has three configurations: Standard, Portable, and Rack
Mount.
•The Standard Configuration consists of the 4-slot C-size mainframe
with front panel monitor, protective bumpers and a carrying handle.
Optional filler panels and shields can be added to the Standard
Configuration.
•The Rack Mount Configuration consists of the Standard
Configuration with the protective bumpers and carrying handle
removed. For this configuration, the mainframe can be rack mounted
using the Rack Mount/Cable Route Adapter Kit with either the Rack
Slide Kit or the Support Rail Kit.
Figure 1-1 shows the options and accessories available for the 1266
mainframe. See Appendix A - 1266 Product Specifications for description
and part numbers for mainframe and accessory options.

1-2 Getting Started Chapter 1
Figure 1-1. 1266 Mainframe Configurations/Options
Rack Mount Configuration
Rack Mount/Cable
Adapter Kit
Protective
Bumpers
Rack Slide Kit
Right Hand Shown
Support Rail Kit
Right Hand Shown
OR
Bumpers
Protective
Carrying
Handle
S
tandard
C
on
f
iguration
Option 04 (407870-007)
Option 01(407870-009) Option 05 (407870-008
)

Getting Started 1-3Chapter 1
Initial Mainframe Setup
The 1266 mainframe is shipped from the factory ready to use. This section
describes procedures for initial mainframe setup, including:
•AC Power Requirements
•Positioning the Mainframe for Adequate Cooling
•Connecting Permanent Earth Ground
NOTE This chapter shows initial setup procedures for the Standard Configuration.
See Chapter 2 - Installing Mainframe Options for information on rack
mounting the mainframe and installing mainframe options.
AC Power
Requirements
The 1266 mainframe can be operated at line voltages of 90 - 140 Vac (@ 47
Hz to 440 Hz) or 90 - 264 Vac (@47 - 66 Hz). The mainframe ships with a
power cord and with a fuse installed in the power supply. The fuse is suitable
for all line voltages, but is not accessible. Appendix A - 1266 Product
Specifications contains input power specifications.
WARNING The power cord is the only way to disconnect the mainframe
from AC power. Therefore, the power cord must be accessible
to the operator at all times. When the 1266 mainframe is
mounted in a system cabinet, the power cord need not be
accessible since the cabinet must have its own disconnect
device. Some fault conditions require removal of AC power for
recovery to occur. See Chapter 3 - Servicing the Mainframe.
Positioning the
Mainframe for
Adequate Cooling
A cooling fan provides air for module and power supply cooling. The fan
operates in Variable Speed or Full Speed mode as controlled by the front
panel Fan Speed switch. Full Speed mode is recommended for maximum
cooling when acoustic noise is not a factor.
Variable Speed mode allows quietest operation while providing sufficient
power supply and module cooling. In Variable Speed mode, the fan speed
is controlled automatically as a function of temperature rise in the mainframe
and the ambient temperature.
Airflow enters the 1266 mainframe rear panel, flows through the power
supply, fan and modules and exhausts out the left side (as viewed from the
front in horizontal orientation). This allows mainframes to be stacked or
rack-mounted directly on top of one another.
When placing the mainframe on a work bench or if the mainframe is rack
mounted, provide at least a one-inch clearance at the back and sides to
allow proper air flow. (Air filters are not necessary on 1266 mainframes.)

1-4 Getting Started Chapter 1
Connecting
Permanent Earth
Ground
The mainframe can be connected to a permanent earth ground. This
connection is made on the back of the mainframe (see Figure 1-2).
WARNING For protection from electrical shock when operating at
frequencies greater than 66 Hz, connect the chassis ground
terminal to permanent earth ground.
1 Connect a 16 AWG (1.3 mm or larger) wire to the PEM nut shown
in Figure 1-2. The wire must be green with a yellow stripe, or bare (no
insulation). Use a M4 x 10 screw, grounding lug, and toothed washers
(or toothed lug) as shown in Figure 1-2.
2 Attach the other end of the wire to a permanent earth ground using
toothed washers or a toothed lug.
Figure 1-2. Connecting the 1266 Mainframe to a Permanent Earth Ground
Permanent Earth
Ground Connection
Location
Toothed
Washers
Back Cover
Wire Lug
Green Wire
With Yellow
Stripe

Getting Started 1-5Chapter 1
Installing VXI Instruments
This section shows how to install VXI instruments (modules) in a 1266
mainframe, including:
•Slot 0 Functions
•Installation Guidelines
•Installing C-Size Instruments
Slot 0 Functions The 1266 mainframe has 4 slots labeled 0 through 3. Any VXI instrument
can be installed in slots 1 through 3. However, slot 0 is reserved for devices
capable of providing the system’s slot 0 functionality, such as the Racal
1260-00C GPIB Slot 0 controller or the Agilent E8491A, IEEE 1394 Firewire
Slot 0 controller. This functionality includes:
•locating instruments installed in the mainframe
•managing (arbitrating) data flow across the backplane
•providing the system clock (SYSCLK - 16 MHz)
Installation
Guidelines
1 Multiple instruments that combine to create a virtual instrument (e.g.,
a scanning multimeter), and instruments which access the backplane
local bus should be installed in adjacent slots.
2 To prevent damage to VXI instruments, do not install instruments
unless the Power On/Standby switch is in Standby position.
3 Insert the instrument into the mainframe by aligning the instrument
with the card guides inside the mainframe. Slowly push the
instrument into the slot until it seats in the backplane connectors.
The front panel of the instrument should be even with the front edges
of the mainframe.
When installing or removing an instrument in Slot 0, you will need to
move the front panel protective bumper aside. Restore the bumper to
its original position after the instrument is installed or removed.
4 Tighten the retaining screws on the top and bottom of the module.
WARNING All instruments within the VXI mainframe are grounded
through the mainframe chassis. During installation, tighten
the instrument's retaining screws to secure the instrument
to the mainframe and to make the ground connection.
NOTE The 1266 is shipped with 1-slotplastic filler panelsthat do
not provide EMC protection.
To comply with EMC requirements, order 1-slot metal filler panels
(407870-004) to cover empty mainframe slots.

1-6 Getting Started Chapter 1
Installing C-Size
Instruments
Install C-size modules directly into the mainframe by first placing the
module’s card edges into the front module guides (top and bottom). Side the
module to the rear of the mainframe until the module connectors mate solidly
with the backplane connectors. Secure the module’s front panel to the
mainframe using the module’s front panel mounting screws.
The easiest way to install B-size modules is with a "B to C size adapter"
allowing a B-size module to be installed just like a C-size.
Front Panel Features
Figure 1-3 shows the 1266 Front Panel features, and the table describes the
features. When the mainframe is connected to an AC supply and the Power
Switch is pressed ON, the Voltages, Temp, and Fan lights flash Amber for
about one second, and then turn Green. These lights should
remain Green. A flashing Amber light indicates an error condition. In this
case, see Chapter 3 - Servicing the Mainframe.
Figure 1-3. 1266 Mainframe Front Panel Features
Power
0
Stdby
On
Voltages
1
Te m p Fan Speed
2
Fan
3
Full
Var
123 4 5
Racal
Instruments
Racal
Instruments
Racal
Instruments
Racal
Instruments

Getting Started 1-7Chapter 1
No. Indicator/Switch Description
1 Power Switch Stdby - AC power is applied to the mainframe, but not to installed VXI instruments.
On - AC power applied to the mainframe, and DC power to installed VXI instruments.
2 Voltages Indicator Green - all voltages on the VXI backplane are present. (Does not necessarily indicate
voltages are within VXI specifications.)
Flashing Amber - one or more voltages is not present or is incorrect. The backplane
voltages and allowed variations are listed below:
Voltage Allowed Variation
+5V +4.875V to +5.125V
+12V +11.64V to +12.6V
-12V -12.6V to -11.64V
+24V +23.28V to +25.2V
-24V -25.2V to -23.28V
-5.2V -5.46V to -5.044V
-2V -2.1V to -1.9V
3 Temp Indicator Green - the power supply temperature is acceptable.
Flashing Amber - the power supply is approaching thermal shutdown.
4 Fan Indicator Green - mainframe cooling fan is operating properly.
Flashing Amber - mainframe cooling fan is not operating.
5 Fan Speed Switch Full - the mainframe cooling fan is operating at full speed.
Var(iable) - the mainframe cooling fan is providing adequate cooling (default setting).

1-8 Getting Started Chapter 1

Installing Mainframe Options 2-1Chapter 2
Chapter 2
Installing Mainframe Options
Chapter Overview
This chapter contains procedures to install hardware options available with
the 1266 mainframe, including:
•Rack Mounting Using Rack Slide Kit . . . . . . . . . . . . . . . . . . 2-2
•Rack Mounting Using Support Rail Kit . . . . . . . . . . . . . . . . . 2-12
•Installing Intermodule Chassis Shields . . . . . . . . . . . . . . . . . 2-20
•Installing the Airflow Restricter Kit . . . . . . . . . . . . . . . . . . . . 2-22
NOTE Mainframe illustrations in this chapter may show empty mainframes.
However, you may receive integrated (pre-configured) VXI systems with
VXI instruments (modules) already installed in the mainframe.
In general, you will NOT need to remove the VXI instruments to perform
installation procedures in this chapter. However, to install shields you must
first remove any installed instruments. To do this, reverse the procedure in
Installing VXI Instruments in Chapter 1 - Getting Started to remove the
instruments.

2-2 Installing Mainframe Options Chapter 2
Rack Mounting Using Rack Slide Kit
This section contains instructions to mount the 1266 mainframe in a
standard EIA cabinet using the Option 04, Rack Mount/Cable Route Adapter
Kit (P/N 407870-007) and the Option 01, Rack Slide Kit (P/N 407870-009).
The rack slide kit allows you to extend the mainframe from the cabinet for
easier access to installed instruments.
Parts List Table 2-2 shows the parts for the Standard Rack Mount/Cable Routing Kit
and for the Rack Slide Kit.
Installation
Procedure
There are three main steps to rack mount the 1266 mainframe using the
Option 04, Rack Mount/Cable Route Adapter Kit and the Option 01, Rack
Slide Kit:
•Configure the Mainframe
•Set up Rack Cabinet
•Install the Mainframe
Table 2-1. Rack Mount Kit and Rack Slide Kit Parts Lists
Quantity Description
Rack Mount/Cable Route Adapter Kit Option 04 (407870-007)
1 Rack Mount Adapter (right)
1 Rack Mount Adapter (left)
2 Handle (for Rack Mount Adapters)
4 10-32 X 0.375" Flat Head Screw (Handle Screws)
12 M3 X 0.5 Pan Head Screw (Adapter-to Mainframe Screws)
4 Adapter Dress Screw
4 Self-Retained Nut (for Rack Mount Adapters)
Rack Slide Kit Option 01 (407870-009)
1 pair Rack Slides
12 10-32 X .375" Pan Head Screw
4 10-32 X .50" Flat Head Screw
8 10-32 Self-Retained Nut