National Instruments VXI-1000 Manual de usuario

VXI-1000

Rackmount Adapter Kit

Installation Guide

bus

July 1990 Edition

Part Number 320265-01

National Instruments Corporate Headquarters

6504 Bridge Point Parkway

Austin, TX 78730-5039

(512) 794-0100

(800) 433-3488 (toll-free U.S. and Canada)

Technical support fax: (512) 794-5678

Branch Offices:

Australia 03 879 9422, Belgium 02 757 00 20, Canada 519 622 9310, Denmark 45 76 73 22, France 1 48 65 33 70,

Germany 089 714 50 93, Italy 02 48301892, Japan 03 3788 1921, Netherlands 01720 45761, Norway 03 846866,

Spain 91 896 0675, Sweden 08 984970, Switzerland 056 45 58 80, U.K. 0635 523545

Limited Warranty

The VXI-1000 rackmount adapter kit is warranted against defects in materials and workmanship for a period of one

year from the date of shipment, as evidenced by receipts or other documentation. National Instruments will, at its

option, repair or replace equipment that proves to be defective during the warranty period. This warranty includes

parts and labor.

A Return Material Authorization (RMA) number must be obtained from the factory and clearly marked on the

outside of the package before any equipment will be accepted for warranty work. National Instruments will pay the

shipping costs of returning to the owner parts which are covered by warranty.

National Instruments believes that the information in this manual is accurate. The document has been carefully

reviewed for technical accuracy. In the event that technical or typographical errors exist, National Instruments

reserves the right to make changes to subsequent editions of this document without prior notice to holders of this

edition. The reader should consult National Instruments if errors are suspected. In no event shall National

Instruments be liable for any damages arising out of or related to this document or the information contained in it.

EXCEPT AS SPECIFIED HEREIN,NATIONAL INSTRUMENTS MAKES NO WARRANTIES, EXPRESS OR IMPLIED,

AND SPECIFICALLY DISCLAIMS ANY WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR

PURPOSE. CUSTOMER'S RIGHT TO RECOVER DAMAGES CAUSED BY FAULT OR NEGLIGENCE ON THE PART

OF NATIONAL INSTRUMENTS SHALL BE LIMITED TO THE AMOUNT THERETOFORE PAID BY THE CUSTOMER.

NATIONAL INSTRUMENTS WILL NOT BE LIABLE FOR DAMAGES RESULTING FROM LOSS OF DATA, PROFITS,

USE OF PRODUCTS, OR INCIDENTAL OR CONSEQUENTIAL DAMAGES, EVEN IF ADVISED OF THE POSSIBILITY

THEREOF. This limitation of the liability of National Instruments will apply regardless of the form of action,

whether in contract or tort, including negligence. Any action against National Instruments must be brought within

one year after the cause of action accrues. National Instruments shall not be liable for any delay in performance due

to causes beyond its reasonable control. The warranty provided herein does not cover damages, defects,

malfunctions, or service failures caused by owner's failure to follow the National Instruments installation, operation,

or maintenance instructions; owner's modification of the product; owner's abuse, misuse, or negligent acts; and

power failure or surges, fire, flood, accident, actions of third parties, or other events outside reasonable control.

Under the copyright laws, this book may not be copied, photocopied, reproduced, or translated, in whole or in part,

without the prior written consent of National Instruments Corporation.

Product names listed are trademarks of their respective manufacturers. Company names listed are trade names of

their respective companies.

Introduction

The rackmount adapter kit is an option for the VXI-1000 mainframe. This manual discusses how

to assemble and install the kit and mount the mainframe. Illustrations are included to guide you

through the installation steps.

The kit adapts the VXI-1000 for mounting in a standard 19-inch wide rack. The depth between

the front and rear vertical rails can be no less than 22 inches and no more than 28 inches. The

VXI-1000 can be mounted flush with the front of the rack, or recessed up to three inches.

Warning: The equipment rack must either be bolted to the floor or include extension feet. An

unsecured rack is unsafe if the mainframe rackmounting assembly is extended on its

tracks.

Mounting Requirements

The rackmounted equipment configuration must meet the following requirements for rackmount

installation:

• A clear mounting space at least 7 inches high and 23 inches deep in a standard 19-inch

equipment rack.

• At least 2 inches clearance between the sides of mainframe and the sides of the rack for air

circulation.

Note: You may need to remove the VXI-1000's top and bottom covers to prevent interference

with equipment mounted directly above or below the VXI-1000.

What Your Kit Should Contain

Your rackmount adapter kit should contain the following components:

Components

Adjustable Mounting Bracket Assemblies (2)

Chassis Track Sections (2)

Stationary Track Sections (2)

Intermediate Track Sections (2)

Rear Mounting Brackets (2)

8-32 Pan Head Screws (12)

(continues)

VXI-1000 Rackmount Adapter Kit Installation Guide 2 © National Instruments Corporation

Components

(continued)

10-32 x 5/16 inch Pan Head Screws (8)

10-32 x 3/8 inch Pan Head Screws (12)

Bar Nuts (6)

L Brackets (2)

Front Cover Panel with 1/4 Turn Fasteners

Make sure each of these items is in your kit. If any item is missing, contact National

Instruments.

Tools Required

You will need the following tools to assemble the rackmount adapter kit:

• No. 1 Phillips screwdriver

• No. 2 Phillips screwdriver

• Small pointed tool, such as a scribe or punch

Mounting Bracket, Chassis Section, and Front Panel

Installation

Refer to Figures 1, 2, and 3 for the following instructions.

Step 1. Remove the Carrying Handle

With the mainframe in the upright or "tower" position, pull up on the instrument carrying handle

to expose the small holes on each handle mount. Carefully push a scribe or punch into one of the

holes while pulling the handle toward the center. This releases the handle retaining spring. Once

the spring is released, remove the scribe and continue to pull the handle until it disengages from

the handle mount. Repeat this procedure for the other handle mount, then store the handle for

future use.

Step 2. Remove the Top and Bottom Covers

Detach the top and bottom covers by removing the 14 pan head screws that secure each cover to

the mainframe. If you want to mount the VXI-1000 within a 7-inch high (4U) space directly

above or below other pieces of equipment, store the covers and screws for future use, and

proceed to step 3. Otherwise, remove the eight rubber feet from the covers and re-install the

covers on the mainframe. Store the feet and mounting hardware for future use.

Rear

Pan Head Screws

(14 Each Cover)

Bottom Cover

Rubber Feet (8)

Top Cover

Handle

Handle Release Holes (2)

Handle Mount (2)

Figure 1. Carrying Handle and Covers

Step 3. Install the Adjustable Mounting Bracket Assemblies

Place one of the adjustable mounting bracket assemblies on the right side of the mainframe. Use

four of the 8-32 pan head screws to secure the bracket. Repeat this procedure to secure the other

bracket assembly to the left side.

VXI-1000 Rackmount Adapter Kit Installation Guide 4 © National Instruments Corporation

"L" Bracket

Mounting Area

Handle

Front Cove

Front

Adjustable Mounting

Bracket

Chassis Track Section

Bottom CoverPan Head Screws (8)

8/32 Bracket Mounting Screws (4)

Top Cover

10-32 x 5/16" Chassis Track Mounting Screws (4)

Figure 2. Adjustable Mounting Bracket and Chassis Section (Right Side View)

Step 4. Install the Chassis Track Section

Remove the chassis track sections from the shipping carton. Notice that there are right and left

sections. Properly orient and mount the right chassis section to the adjustable mounting bracket,

using four of the 10-32 x 5/16 inch pan head screws. Repeat this procedure to install the left

chassis section.

Step 5. Adjust the Mounting Bracket for Recessed Mounting

The adjustable mounting bracket is shipped from the factory in the flush mount position. For

recessed mounting, loosen the eight pan head screws on each bracket and extend the brackets as

required (see Figure 2). Be sure to retighten the screws.

Step 6. Install the Front Cover Panel (Recessed Mount Only)

The cover panel gives a finished appearance and protects instrument modules and cabling. To

accommodate the front panel installation, the mainframe must be recessed (see step 5) with

adequate clearance between the cover panel and the instrument cables. The front panel attaches

to the adjustable bracket assemblies with two L brackets, as shown in Figure 3. Secure each L

bracket to bracket assemblies using two 8-32 pan head screws. Secure the front cover to the L

brackets with 1/4 turn fasteners.

"L" Brackets

Figure 3. L Bracket Installation (Front View)

VXI-1000 Rackmount Adapter Kit Installation Guide 6 © National Instruments Corporation

Track Installation

Refer to Figures 4, 5, and 6 for the following instructions.

1. Measure the distance between the front and rear rails (depth between the front and rear

vertical rails can be no less than 22 inches and no more than 28 inches).

2. Attach a rear mounting bracket to each stationary track section. Use two 10-32 x 3/8 inch

pan head screws and one bar nut for each assembly. Choose an alignment to match the rail

spacing. Do not fully tighten the screws. The front rail mounting method is shown in Figure

5. Figures 6a and 6b illustrate the rear rail mounting methods for deep and shallow racks,

respectively.

3. Install the stationary track assemblies into the rack. Use four 10-32 x 3/8 inch pan head

screws to secure each track assembly to the rack rails. Use bar nuts if the rack rail holes are

not threaded. Tighten the rack rail screws enough to secure the stationary track assemblies to

the rack while still allowing movement. Fully tighten the screws that attach the rear

mounting brackets to the stationary sections.

4. Slide the intermediate track sections into the stationary tracks so they lock in their extended

positions.

5. Carefully lift the mainframe into place so the chassis track sections align with the

intermediate track sections. Slide the chassis tracks into the intermediate tracks and push the

mainframe halfway into the rack. It will stop at the first detent.

6. The sliding track sections should align themselves as the mainframe is pushed into the rack.

Tighten all loose screws.

If the tracks do not operate smoothly, loosen the screws that secure the stationary track sections

to the front and rear rails. Center the mainframe assembly, allowing the tracks to seek their

proper position, then retighten the screws.

The tracks require no lubrication because of their special finish.

Stop Latch

Hole

Intermediate

Track

Chassis

Track

Automatic

Latches

10-32 x 3/8" Pan Head

Screws (4)

Rear Mounting

Bracket

10-32 x 3/8" Pan Head

Screws (2) Flat Ba

Nuts

Stationary

Track

Figure 4. Track Installation (Right Assembly Shown)

Bar Nut

(Use If the Front Rail Is Not Tapped)

10-32 x 3/8"

Pan head screws

Figure 5. Front Rail Mounting Method

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