Tektronix CH-EXP Series Users Guide

CH-EXP Series

User’s Guide

A GREATER MEASURE OF CONFIDENCE

WARRANTY

Hardware

Keithley Instruments, Inc. warrants that, for a period of one (1) year from the date of shipment (3 years for Models 2000,
2001, 2002, 2010 and 2700), the Keithley Hardware product will be free from defects in materials or workmanship. This
warranty will be honored provided the defect has not been caused by use of the Keithley Hardware not in accordance with
the instructions for the product. This warranty shall be null and void upon: (1) any modification of Keithley Hardware that
is made by other than Keithley and not approved in writing by Keithley or (2) operation of the Keithley Hardware outside
of the environmental specifications therefore.

Upon receiving notification of a defect in the Keithley Hardware during the warranty period, Keithley will, at its option,
either repair or replace such Keithley Hardware. During the first ninety days of the warranty period, Keithley will, at its
option, supply the necessary on site labor to return the product to the condition prior to the notification of a defect. Failure
to notify Keithley of a defect during the warranty shall relieve Keithley of its obligations and liabilities under this
warranty.

Other Hardware

The portion of the product that is not manufactured by Keithley (Other Hardware) shall not be covered by this warranty,
and Keithley shall have no duty of obligation to enforce any manufacturers' warranties on behalf of the customer. On those
other manufacturers’ products that Keithley purchases for resale, Keithley shall have no duty of obligation to enforce any
manufacturers’ warranties on behalf of the customer.

Software

Keithley warrants that for a period of one (1) year from date of shipment, the Keithley produced portion of the software or
firmware (Keithley Software) will conform in all material respects with the published specifications provided such Keithley
Software is used on the product for which it is intended and otherwise in accordance with the instructions therefore.
Keithley does not warrant that operation of the Keithley Software will be uninterrupted or error-free and/or that the Keithley
Software will be adequate for the customer's intended application and/or use. This warranty shall be null and void upon any
modification of the Keithley Software that is made by other than Keithley and not approved in writing by Keithley.

If Keithley receives notification of a Keithley Software nonconformity that is covered by this warranty during the warranty
period, Keithley will review the conditions described in such notice. Such notice must state the published specification(s)
to which the Keithley Software fails to conform and the manner in which the Keithley Software fails to conform to such
published specification(s) with sufficient specificity to permit Keithley to correct such nonconformity. If Keithley deter­mines that the Keithley Software does not conform with the published specifications, Keithley will, at its option, provide
either the programming services necessary to correct such nonconformity or develop a program change to bypass such
nonconformity in the Keithley Software. Failure to notify Keithley of a nonconformity during the warranty shall relieve
Keithley of its obligations and liabilities under this warranty.

Other Software

OEM software that is not produced by Keithley (Other Software) shall not be covered by this warranty, and Keithley shall
have no duty or obligation to enforce any OEM's warranties on behalf of the customer.

Other Items

Keithley warrants the following items for 90 days from the date of shipment: probes, cables, rechargeable batteries, diskettes,
and documentation.

Items not Covered under Warranty

This warranty does not apply to fuses, non-rechargeable batteries, damage from battery leakage, or problems arising from
normal wear or failure to follow instructions.

Limitation of Warranty

This warranty does not apply to defects resulting from product modification made by Purchaser without Keithley's express
written consent, or by misuse of any product or part.

Disclaimer of Warranties

EXCEPT FOR THE EXPRESS WARRANTIES ABOVE KEITHLEY DISCLAIMS ALL OTHER WARRANTIES,
EXPRESS OR IMPLIED, INCLUDING WITHOUT LIMITATION, ALL IMPLIED WARRANTIES OF MERCHANT­ABILITY AND FITNESS FOR A PARTICULAR PURPOSE. KEITHLEY DISCLAIMS ALL WARRANTIES WITH
RESPECT TO THE OTHER HARDWARE AND OTHER SOFTWARE.

Limitation of Liability

KEITHLEY INSTRUMENTS SHALL IN NO EVENT, REGARDLESS OF CAUSE, ASSUME RESPONSIBILITY FOR
OR BE LIABLE FOR: (1) ECONOMICAL, INCIDENTAL, CONSEQUENTIAL, INDIRECT, SPECIAL, PUNITIVE OR
EXEMPLARY DAMAGES, WHETHER CLAIMED UNDER CONTRACT, TORT OR ANY OTHER LEGAL THEORY,
(2) LOSS OF OR DAMAGE TO THE CUSTOMER'S DATA OR PROGRAMMING, OR (3) PENALTIES OR PENALTY
CLAUSES OF ANY DESCRIPTION OR INDEMNIFICATION OF THE CUSTOMER OR OTHERS FOR COSTS, DAM­AGES, OR EXPENSES RELATED TO THE GOODS OR SERVICES PROVIDED UNDER THIS WARRANTY.

Keithley Instruments, Inc.

Sales Offices: BELGIUM: Bergensesteenweg 709 • B-1600 Sint-Pieters-Leeuw • 02-363 00 40 • Fax: [phone]

CHINA: Yuan Chen Xin Building, Room 705 • 12 Yumin Road, Dewai, Madian • Beijing 100029 • 8610-6202-2886 • Fax: [phone]
FINLAND: Tietäjäntie 2 • 02130 Espoo • Phone: [phone] • Fax: [phone]
FRANCE: 3, allée des Garays • 91127 Palaiseau Cédex • 01-64 53 20 20 • Fax: [phone]
GERMANY: Landsberger Strasse 65 • 82110 Germering • 089/84 93 07-40 • Fax: [phone]
GREAT BRITAIN: Unit 2 Commerce Park, Brunel Road • Theale • Berkshire RG7 4AB • 0118 929 7500 • Fax: [phone]
INDIA: Flat 2B, Willocrissa • 14, Rest House Crescent • Bangalore 560 001 • 91-80-509-1320/21 • Fax: [phone]
ITALY: Viale San Gimignano, 38 • 20146 Milano • 02-48 39 16 01 • Fax: [phone]
JAPAN: New Pier Takeshiba North Tower 13F • 11-1, Kaigan 1-chome • Minato-ku, Tokyo 105-0022 • 81-3-5733-7555 • Fax: [phone]
KOREA: 2FL., URI Building • 2-14 Yangjae-Dong • Seocho-Gu, Seoul 137-888 • 82-2-574-7778 • Fax: [phone]
NETHERLANDS: Postbus 559 • 4200 AN Gorinchem • 0183-635333 • Fax: [phone]
SWEDEN: c/o Regus Business Centre • Frosundaviks Allé 15, 4tr • 169 70 Solna • 08-509 04 679 • Fax: [phone]
SWITZERLAND: Kriesbachstrasse 4 • 8600 Dübendorf • 01-821 94 44 • Fax: [phone]
TAIWAN: 1FL., 85 Po Ai Street • Hsinchu, Taiwan, R.O.C. • 886-3-572-9077• Fax: [phone]

28775 Aurora Road • Cleveland, Ohio 44139 • 440-248-0400 • Fax: [phone]

1-888-KEITHLEY (534-8453) • www.keithley.com

4/02

CH-EXP

28775

Technical

Monday -Friday

Series

Aurora

Road,

Cleveland,

Support:

1-888-KEITHLEY

ROO

a.m.

User’s

OH

44139

to

5:OO

pm.

(EST)

Guide

Revision

C

Part Number:

-

October

66450

1996

Basic™ is a trademark of Dartmouth College.

IBM® is a registered trademark of International Business Machines Corporation.
PC, XT, and AT® are trademarks of International Business Machines Corporation.

Microsoft® is a registered trademark of Microsoft Corporation.
Turbo C® is a registered trademark of Borland International.

Information furnished by Keithley Instruments is believed to be accurate and reliable.
However, Keithley Instruments assumes no responsibility for the use of such information nor
for any infringements of patents or other rights of third parties that may result from its
use. No license is granted by implication or otherwise under any patent rights of Keithley

Instruments.

WARNING

Keithley Instruments assumes no responsibility for damages consequent to

the use of this product. This product is not designed with components of a level of

reliability suitable for use in life support or critical applications.

NEW CONTACT INFORMATION

Keithley Instruments, Inc.

28775 Aurora Road

Cleveland, OH 44139

Technical Support: 1-888-KEITHLEY

Monday – Friday 8:00 a.m. to 5:00 p.m (EST)

Fax: [phone]

Visit our website at http://www.keithley.com

S

The following safety precautions should be observed before using this product and any associated instrumentation.
Although some instruments and accessories would normally be used with non-hazardous voltages, there are situations
where hazardous conditions may be present.

This product is intended for use by qualified personnel who recognize shock hazards and are familiar with the safety
precautions required to avoid possible injury. Read and follow all installation, operation, and maintenance information
carefully before using the product. Refer to the manual for complete product specifications.

If the product is used in a manner not specified, the protection provided by the product may be impaired.
The types of product users are:

Responsible body

the equipment is operated within its specifications and operating limits, and for ensuring that operators are adequately
trained.

Operators

of the instrument. They must be protected from electric shock and contact with hazardous live circuits.

Maintenance personnel

the line voltage or replacing consumable materials. Maintenance procedures are described in the manual. The proce­dures explicitly state if the operator may perform them. Otherwise, they should be performed only by service personnel.

Service personnel are trained to work on live circuits, and perform safe installations and repairs of products. Only

properly trained service personnel may perform installation and service procedures.
Keithley products are designed for use with electrical signals that are rated Installation Category I and Installation

Category II, as described in the International Electrotechnical Commission (IEC) Standard IEC 60664. Most mea­surement, control, and data I/O signals are Installation Category I and must not be directly connected to mains voltage
or to voltage sources with high transient over-voltages. Installation Category II connections require protection for high
transient over-voltages often associated with local AC mains connections. Assume all measurement, control, and data
I/O connections are for connection to Category I sources unless otherwise marked or described in the Manual.

Exercise extreme caution when a shock hazard is present. Lethal voltage may be present on cable connector jacks or
test fixtures. The American National Standards Institute (ANSI) states that a shock hazard exists when voltage levels
greater than 30V RMS, 42.4V peak, or 60VDC are present.

age is present in any unknown circuit before measuring.

Operators of this product must be protected from electric shock at all times. The responsible body must ensure that
operators are prevented access and/or insulated from every connection point. In some cases, connections must be ex­posed to potential human contact. Product operators in these circumstances must be trained to protect themselves from
the risk of electric shock. If the circuit is capable of operating at or above 1000 volts,

may be exposed.

Do not connect switching cards directly to unlimited power circuits. They are intended to be used with impedance
limited sources. NEVER connect switching cards directly to AC mains. When connecting sources to switching cards,
install protective devices to limit fault current and voltage to the card.

Before operating an instrument, make sure the line cord is connected to a properly grounded power receptacle. Inspect
the connecting cables, test leads, and jumpers for possible wear, cracks, or breaks before each use.

is the individual or group responsible for the use and maintenance of equipment, for ensuring that

use the product for its intended function. They must be trained in electrical safety procedures and proper use

perform routine procedures on the product to keep it operating properly, for example, setting

afety Precautions

A good safety practice is to expect that hazardous volt-

no conductive part of the circuit

5/02

When installing equipment where access to the main power cord is restricted, such as rack mounting, a separate main
input power disconnect device must be provided, in close proximity to the equipment and within easy reach of the
operator.

For maximum safety, do not touch the product, test cables, or any other instruments while power is applied to the cir­cuit under test. ALWAYS remove power from the entire test system and discharge any capacitors before: connecting
or disconnecting cables or jumpers, installing or removing switching cards, or making internal changes, such as in­stalling or removing jumpers.

Do not touch any object that could provide a current path to the common side of the circuit under test or power line (earth)
ground. Always make measurements with dry hands while standing on a dry, insulated surface capable of withstanding the
voltage being measured.

The instrument and accessories must be used in accordance with its specifications and operating instructions or the
safety of the equipment may be impaired.

Do not exceed the maximum signal levels of the instruments and accessories, as defined in the specifications and op­erating information, and as shown on the instrument or test fixture panels, or switching card.

When fuses are used in a product, replace with same type and rating for continued protection against fire hazard.
Chassis connections must only be used as shield connections for measuring circuits, NOT as safety earth ground con-

nections.
If you are using a test fixture, keep the lid closed while power is applied to the device under test. Safe operation re-

quires the use of a lid interlock.

If or is present, connect it to safety earth ground using the wire recommended in the user documentation.

!

The symbol on an instrument indicates that the user should refer to the operating instructions located in the manual.

The symbol on an instrument shows that it can source or measure 1000 volts or more, including the combined
effect of normal and common mode voltages. Use standard safety precautions to avoid personal contact with these
voltages.

The

WARNING

associated information very carefully before performing the indicated procedure.
The

CAUTION

the warranty.
Instrumentation and accessories shall not be connected to humans.
Before performing any maintenance, disconnect the line cord and all test cables.
To maintain protection from electric shock and fire, replacement components in mains circuits, including the power

transformer, test leads, and input jacks, must be purchased from Keithley Instruments. Standard fuses, with applicable
national safety approvals, may be used if the rating and type are the same. Other components that are not safety related
may be purchased from other suppliers as long as they are equivalent to the original component. (Note that selected parts
should be purchased only through Keithley Instruments to maintain accuracy and functionality of the product.) If you
are unsure about the applicability of a replacement component, call a Keithley Instruments office for information.

To clean an instrument, use a damp cloth or mild, water based cleaner. Clean the exterior of the instrument only. Do
not apply cleaner directly to the instrument or allow liquids to enter or spill on the instrument. Products that consist
of a circuit board with no case or chassis (e.g., data acquisition board for installation into a computer) should never
require cleaning if handled according to instructions. If the board becomes contaminated and operation is affected,
the board should be returned to the factory for proper cleaning/servicing.

heading in a manual explains dangers that might result in personal injury or death. Always read the

heading in a manual explains hazards that could damage the instrument. Such damage may invalidate

Table

Preface

1

Introduction

Configuration
BackplaneLayout
Power
Disk Drives

Cooling

Specifications

2

Installation

Rack Mounting

Board

3

Expansion Chassis Interface Kit

Installation
Restrictions
Specifications

Supplies

Installation

Choices

.................................

....................................

.......................................

.........................................

and

Filtration

................................

........................................

.......................................

.....................................

..........................................

.........................................

........................................

of

Contents

1-4

1-4

1-5

1-6

. 1-6

1-6

2-1

2.2

3-2

3.3

3-4

4

Maintenance and Repair

Maintaining the
Troubleshooting

If

Unit

If

an

LED

5

Factory Return Information

of

List

Figure
Figure
Figure 1.3
Figure
Figure
Figure
Figure

Figures

1.1

1.2

1-4

2.1

2.2

4.1

Air

......................................

Does

Not

on

the

.

CH-EXP12:

.

CH-EXP4: Dimensions

.

Backplane Layout for the CH-Em12

.

Backplane Layout for

.

CH-EXP12:

.

RTMA

.

Air

Filter

Filter

..............................

Power
Backplane

Up

when Switched On

Does

Not

Dimensions

...................

...........

Light

.............

....................

the

Front-Panel

Hole Spacing

CH.EXP4

Mounting

.......................

..........

Holes

................................

..........

.......

4.1
4-2

4.3

44

, 1-2

, 1-3

1-5

, 1-5

2.1

2.2

4.1

iii

List

Table

Table

Table

Table

of

Tables

1.1

1.2

1.3

3.1

.

CH-EXP

CH-Em12

.
.

CH-EXP4

.

Interface

Model Numbers

Specifications

Specifications

Kit

Specifications.

...................

...................

...................

.................

1.1

1.7

1.10

3-4

iv

Preface

This manual serves both designers of systems and users of Keithley’s

CH-EXP

installation, and application information.

This

Series Expansion Chassis.

manual

is organized

as

follows:

It

provides specifications,

1

Chapter

series
backplane layout, specific aspects
specifications
expansion chassis construction.

Chapter

chassis in
backplane

Chapter

of the
interface

Chapter

maintenance
CH-EXP Series Expansion Chassis.

Chapter

Keithley’s repair and

1

-

Introduction

of

expansion

2

-

Installation

an

of

3

-

Expansion

CH-EXP

kit

to

4

-

Maintenance and Repair

5 - Factory Return Information

chassis,

for

power supplies, operating environment, and

equipment rack

an

expansion chassis.

Series Interface Kit and procedures

an expansion chassis

and

on

provides

including configuration, power supplies,

of

describes how to

and

install accessory boards in

Chassis

troubleshooting the operation

return

Interface Kit

policy.

an

overview ofthe

the

enclosable housing, and the

mount

provides

and

a

host computer.

provides information on

provides information on

CH-EXP

an

expansion

an

for

connecting the

and

use

the

overview

filter

of

a

5

Introduction

The

CH-EXP

number
are

self-contained I3M-compatible enclosures complete

supply,

IBM

PC-type accessory boards, including

are

available

Current models include the 6-slot

Series Expansion Chassis enable

of

available

fan

cooling,

for

UO

harnessing,

IBM

PC/AT

slots

of

bus

a

and

you

host computer. The expansion chassis

a

passive backplane

CPU

boards. Expansion

configurations

and

16slot versions listed

to increase

with

power

chat

can accept

(or

their equivalents).

in

the

chassis

Table

1-1.

Table

I

Model

I

CH-EXP4

The

CH-Em12

the tough reliabiIity requirements

1-1

shows

CH-EXP4

portable applications. Figure
Expansion Chassis.

USA.

Number

the

is a versatile table-top chassis suitable for laboratory

1-1.

CH-EXP

1

Slots

I

6

full

is

a

heavy duty rack-mount

dimensions

All

CH-EXP

of

the

1-2

slots

Model

Numbers

I

I

Table-top

chassis

of

the

industrial environment. Figure

CH-ED12

shows

Series chassis are manufactured in the

Expansion Chassis. The

the

dimensions

engineered

of

to

or

the

CH-EXP4

I

meet

1-1

115/230

Switch

Keyboard

Air

FIlters

Backplane

/

V

Connector Reset &witch SMtch

I

:I

OO

1

TOPVIEW

I

17"

432

rnm

1-2

7

Figure

Fans

1-1.

\I

CH-EXP12:

Dimensions

tntroduction

REAR

VIEW

FRONT

VIEW

Cutout for

Connector

Power

Switc

DB-37

Fuse Holder

Backplane

7

IEC

Connector

Power

Fan

Reset

Switch

f

7.19"

Figure

The sections

chassis

and

1-2.

that

follow

provide

CH-EXP4:

Dimensions

describe

specifications

specific

for

each.

aspects

of

the

two

expansion

7

-3

Configuration

Choices

You

can

configure either expansion chassis

for

one

of

two modes:

Backplane

as a stand-alone computer,

0

as

an

extension

Configuring
CPU

board plus any additional components you may require. For
example,
controller board for hard-disk and floppy drives, a keyboard interface,
andor other components.

Configuring
computer requires
chassis. This

for

your expansion

configuration, the

slot

to

expansion chassis
Expansion Chassis Interface Kit

the

you

to

the system while the

to

your computer.

expansion chassis for stand-alone operation requires

may add a video board

extend

kit

the

use

of

contains

chassis,

CH-Em12

may

be used with a single host computer.

or

to

support

accessory board capacity

the

interface

an

adapter board for the host,

and

adds

CH-EXP4

kit

a cable

is

for

an

additional
adds 4 full

fully discussed

a

furnished with your expansion

connecting the boards.

local

monitor, a disk

of

an

existing

an

11

full

slots

slots.

Multiple

in

Chapter

adapter board

In

and

1

The

3.

Layout

a

this

2/3

1-4

Backplane components for each expansion chassis include full-length

accessory board
The backplane layout
backplane layout for the CH-EXP4

slots

and

for

LED

indictors

the

CH-Em12 is shown in Figure

for

each power supply output.

is

shown in Figure

1-4.

1-3.

The

Introduction

TOP

VIEW

,

On

0

0

LEDs

1-4

Power

Figure

TOP

Figure

Supplies

1-3.

VIEW

1-4.

Backplane

Backplane Layout

Layout

for

for

the

CH-EXPi2

the

CH-EXP4

Power

Supplies

The

power supplies

backplane,

CH-EXP4.

CH-EXP4,

They

For

up

to

the

information, refer
expansion

CH-Em4

chassis,

expansion chassis.

provide

deliver

10

up

CIP-EXE'12,

A

at

to

Table

or

to

Table

to

+5

1-2

~5

V

VDC

and

300 W for

up

to

30

is

available.

on

page

1-3

on

page

k12

the

CH-ED12

A

at

For

1-7

if

1-10

VDC

to

the

passive

and

+5

V

is

available;

additional power

you

are

using a CH-Em12

if

you

are

using

65

W

for

for

the

supply

a

the

1-5

Disk

Drives

The

CH-EXPI2

half-height %-inch floppy disk drives as well
hard-disk drive. The
accessible 3%-inch floppy disk drive
hard-disk drive.

can accommodate

Coolinn and Filtration

The

CH-Em12

40

CFM

fan

the

on
environmental dirt
without turning

the

The

provide positive pressurization
drives. The

front panel

four

air

CH-EXP4

contains two

in

the

power

filter

has a single

CH-EXP4

CH-EXP4

power

(shown

supply

in Figure

and

grit. This filter can

off or

screws

on

the

42

does

not contain air filters.

up

to

three externally accessible

as

one internal 3%-inch

can accommodate one externally

as

well

as

one

internal 3%-inch

80

CFM

fans

in

the

front panel

module.

opening the

front

CFM

of

the entire system, including

1-1)

panel.

fan

An

easy-access air filter located

protects

expansion

in

the

system from

be

removed and cleaned

chassis

the

card-cage area. All

as

well

by

removing

the

as

fans

disk

a

Specifications

Table
specifications

1-6

1-2

lists specifications

for

the

for

CH-EXP4.

the

CH-EXP12.

Table

1-3

lists

Introduction

I

Feature

I

Chassis

Table

I

Attribute

1-2.

CH-EXP12

Specifications

I

Specification

I

I

I

Front panel

Cooling

Indicators

I

Speaker

Backplane

I

0.125"

aluminum alloy, clear anodized

Card

Cage Area: Two

and removable

Module: one

Front

Panel:

Activity; Backplane:

Good

1

8

Q

2-inch

14

AT

slots

four-layer construction
ground planes

air

filter; Power Supply

40

CFM,

Power

(16

bit)

On

*5

on

80

CFM,

3%'

fan

and

HDl/HDZ

V/

+12

0.800"

with

5%"

fans,

V

Power

centers;

power and

I

I

Specifications

Dimensions

7'

H

x

482.6

mmx431.8

19'

W

x

17" D (177.8

mm)

mmx

I

1

-7

I

Feature

Table

I

Attribute

1-2.

CH-EXP12

Specifications (cont.)

/

Specification

I

I

I

I

Output

1

-5

1-12

AC

1

Hold-Up

Overvoltage
Protection

Voltage

VDC

VDC

Input

Current

lime

Load

Current

Maximum

I

0.5

A

I

0.5

A

6.3

A

Maximum

Maximum

I

20

ms

Minimum

+5/+12

reaches

63

180

V:

Automatic

110-130%

63

90 VAC,

VAC

of

rated

I

0.0

A

10.0

A

3.1

shutdown

voltages

A

if output

. ..

I

‘1

I

I

I

1-8

I

MTBF

Between

1

Safety

(Mean

Time

Failures)

Approvals

40,000

I

UL1950

hours

Dev.3, CSA

22.2,

mV

EN60950

lntroduct

I

ion

Table

1

Feature

Operating Operating

Environment Temperature

1-2. CH-EXPl2

1

Attribute

Specifications

1

Specification

(cont.)

I

Notes

A 5-pin

card.

2A

minimum

page

2-2.

ribbon

cable is provided

load

Humidity

for

attaching

is

required for the power supply

10

to

85%

Relative Humidity at 40”C,

non-condensing

the

rear panel keyboard connector

to

operate. Refer

to

“Board

to

a

CPU

InstaIlation”

I

on

Specifications

1-9

Table

1-3.

CH-EXP4

Specifications

Feature

Chasis

1

Attribute

Paint

Switches Front Panel: System Reset; Rear Panel:

Connectors

I

Drive Capacity

I

Weight

1

Specification

Gloss

Polane,

Fed-Std.

Power

Rear

C?

1

One

I

6

595

On

Panel: Keyboard

IEC

Power

3%"

floppy

lbs

(2.7

Kg);

Medium

#

2608

and

Shipping:

Pebble

1

5-pin

one

(Gray),

DIN

connector

3%"

hard-diskdrive

10

lbs

(4.5Kg)

I

per

I

I

1-io

Power

.

. .

Supply

-

-

. . . ..

I

Output Power

I

+5

I

+12

.

VDC

VDC

10.5

]

0.2

A

A

I

I

I

Introduction

1

Feature

I

Power

supply

Table

(cont.)

1-3.

1

Attribute

1

Input

Voltage

CH-EXP4

Specifications

1

Specification

1

90

to

260

VAC

Auto-Sensing,

(cont.)

47

to

63

Hz

I
1

I

I

Environment

I
I

Notes

'Each

output

exceed

'A

page

65

minimum load

2-2.

is

able

W

continuous.

is

I

Hold-Up Time

Overvoltage
Protection rated

Short

Circuit

Protection

1

Internal

1

Storage Temperature

1

Operation

to

provide up

required

for

Fuse

Burn-in

to

the

the

maximum load. However, the

power supply

1

(115V)16ms

Crowbar type; trip point

output

i2

V

Pulse

by

pulse

current

1

3.0

A,

250

V,

3AG

Fast

1

Meets

I

-20

to

1

48

hours

to

operate. Refer

VDElFCC

60°C

Class

to

6.2

V

k

0.4

V

or

limiting

Blow

"B"

total

output

cannot

"Board Installation"

I

I

I

I
I

on

Specifications

1-11

Installation

Rack

This chapter describes how to mount

a

rack and how

For

detailed instaIlation procedures about
including disk drives
instructions supplied with

Mounting

To

install

the

via

use

RTMA

space in

to

install boards in

and

the

CH-ED12

four

front-panel

standard spacing. The

any

standard equipment

mounting

CPU

those

into

the

the

chassis.

boards,

accessories.

a

19-inch

holes

CH-ED12

rack.

Screw

CH-EXPI2

any

please

refer

equipment rack, bolt the chassis

shown

requires 7 inches

for

Chassis

expansion chassis

thirduparty accessories,

to

the

manufacturer's

in

Figure

Cover

2-1.

These

of

vertical

holes

in

Rack

Mounting

Figure

2-1.

CH-EXP12:

Front-Panel Mounting Holes

2-

1

The RTMA standard hole spacing pattern

1

,500"

-f

5

,625"

is

shown in Figure

2-2.

Board

Figure

Installation

When installing accessories
chassis, observe

Make certain

1.

can leave the power

Caution:

Remove

2.

remove
shown in Figure

Touch the sheet metal

3.

eliminate any

Do

4.

your intended installation

procedures

For

all

boards.

2-2.

RTMA

the

following procedures

that

the expansion chassis

Never insert or remove

the

top

cover from

the

cover,

you

2-1,

static

on

the

Expansion Chassis Interface

other boards, refer to specific instructions supplied with the

Hole

Spacing

or

working

plugs

connected to maintain chassis grounding.

the

must remove

as

well

of

the expansion chassis

charge.

on

any

model

and

precautions:

and

boards

expansion chassis.

as

the

or

work.

with power on.

the

screw

screws on the side

For

detailed installation

of

PC

are

turned

Note

in

the

to ground

Kit,

refer to Chapter

the

front

of

expansion

off.

You

that

to

paneI,

the chassis.

yourself

and

3.

2-2

Installation

5.

Ensure that

against the

6.

Replace

(CH-Em12

any

disk drive

the

cover

only) is

boards installed in the

housing.

and

check

that

the

set

for

your

local line voltage.

far

end slots do not

115j230V

selector

short

switch

Caution:

properly

7.

Turn

the

Damage

set

the

power

to

the power suppIy may result if you do not

115/230V

on

to the expansion chassis and then

selector switch.

computer.

~ ~~~~~

Notes:

the

simultaneously,

into

Power should

same

time

a

power strip

be

applied

power is applied

plug

both the computer and

and

apply power using

to

the

to

the

host computer.

expansion chassis before or

the

power strip.

In

some

cases

where

the

host

computer

computer may complete boot up before

expansion

this

expansion

button.

Do

not apply power

is

required
requirement
chassis
information

chassis

case,

a software routine

chassis

for

the

is

generally met

(see

Table
on

has

come up. This may lock up the computer.

is

needed to initiate a reboot after the

power

is

on.

to

an

empty expansion

Alternatively,

switching power supply to operate.

by

installing

1-2

on

page

1-7

the power

supply

is a high speed model,

the

one

or

Table

load

for

your

Model).

to

?he

host

To

apply

power

the

expansion chassis

OdOff

switch of the

the

power supply

you

may press the Reset

chassis. A minimum

board

1-3

on page

expansion chassis

in

This

the

on

the

expansion

1-10

for

at

In

load

Board

Installation

2-3

3

Expansion

The Expansion Chassis Interface Kit allows you
personal computer system without timing

an

active bus extension that is hardware
your host computer and
existing
initializing software
required.
interface kit is designed as

Active circuits and high speed
delays.
proper impedance matching between components to
ringing.

YOU

computers. However,
state.
provided, When
is asserted
majority
communicating to the expansion chassis.

can

To

boards

Also,

use

or

software is necessary, no configuration switches or

DMA

and interrupt modes

the

multi-layer printed circuit boards

the

interface kit with

avoid

the

need

the

jumper is placed

on

read operations

of

computers work acceptably without a wait

Chassis

or

noise problems. It provides

and

software-transparent between

the

expansion chassis.

are

required, and no memory or

of

operation

a

true

expansion of the 16-bit

ICs

are

used to minimize propagation

386

and 486 computers

in

some

wes

it

may

be necessary

to

modify

only

your

software, a wait-state jumper is

in

the

WAIT

from

the

expansion chassis.

Interface

Kit

to

expand

No

modification

are

are

position, one wait

your

AT

to

any

I/O

addresses are

fully supported. The

AT

bus.

optimized for

avoid

spikes and

as

well

as

286

to

assert a wait

state

The

great

state

when

This chapter describes how
information on restrictions,

to

install the interface kit, provides

and

lists

the

specifications

of

the interface

kit.

3-1

Installation

The interface
assembly. The transmitter
receiver (LR)

Caution:

boards.

handling the

To

install the interface kit, proceed

1.

Check that power is

2.

Remove

3.

Check that the wait-state jumper

jumper block

circuit

is, with the jumper in the lower position). The majority

applications

4. Select

obstruction.

kt

consists

board

Static

sensitive devices are mounted on the expansion interface

Use a grounded wrist strap or other approved ESD device before

boards

the

covers from the

is

U29.

(The

do

an

unused

Do

of

two boards and a quick-disconnect cable

CT)

board plugs into the host computer and the

plugs into

to

avoid damage to the boards.

on

the

board

not

require a

board

not locate the

the

expansion

as

follows:

off

on

the

host computer and expansion chassis.

host

computer and expansion chassis.

is

in the

LT

board, immediately adjacent

is

shipped configured

wait

state.

slot

in

the

host computer that is free

LT

board next

chassis

desired

to

backplane.

position. The

to

integrated

for

zero wait state, that

of

of

a

CPU

board.

3-2

5.

Plug

the

LT

board into

If

you

bracket.

same

host computer, pIug all of

6.

Plug the LR board into the expansion chassis and secure

bracket.

chassis backplane.

7.

Re-install

8.

Connect the supplied cable between

hear an audible "click' when the connectors seat properly.

are using more than one expansion chassis with the

For

best results, use a

the

host computer

9. Connect the host computer chassis

braided cable secured

ensures

immunity.

a

good quality

the

computer

with

screws and

ground

slot

and secure

the

LT boards into the host.

slot in

and

connection

the

middle

expansion

the

LT

to

the expansion

star

Expansion

chassis

and

washers

and

of

LR cards. You should

improves noise

Chassis

the

mounting

the

mounting

the

expansion

covers.

chassis

at

with a

both ends. This

Interface

Kit

10.

For the
on

the

CH-EXP12,

rear of the chassis) is set for your local line voltage.

check that

the

llY230V selector switch (located

Caution:

115/230V selector switch properly.

11. Apply power
computer,

Note:

the same time power
simultaneously, plug both

into

power strip.

In

some cases where the
computer may complete boot
expansion chassis
this
expansion chassis power
button.

Do

is

required for

requirement

chassis

information
model).

Damage

Power should be applied to the expansion

a

power strip

case,

a

software

not apply power

(see

to

the power supply may result if you fail

first

to

the expansion chassis and then

is

applied

and

apply power

host

has

come up. This may lock

routine is needed to initiate a reboot after

is

to

an

empty expansion chassis. A minimum load

the

switching power supply to operate. This

is

generally met

Table

1-2

on page

on

the power supply load

to

the host

chassis

to

the host computer.

the

computer and

using

computer

up

before

on. Alternatively, you may press

by

installing one

1-7

or Table

the

the

OdOff

is

a high speed model,

the

power supply on the

board

1-3

for

your expansion

To

expansion chassis

switch

up

the

computer.

in

the expansion

on

page

to

set

the

before

apply power

of

or

the

at

the

In

the

the

Reset

1-10

for

chassis

Restrictions

Restrictions

Computer resources such

expansions chassis with

EGA,

and

VGA

graphics

but Super-VGA boards cannot be used in the expansion chassis, because

they transfer

END=*

a

large amount

signal (sometimes called

as

graphics boards can be used in the

some

restrictions.

boards

of

data

can

For

example, Hercules,

be

used

in

the

in a brief period

0WS*)

is

asserted for compressed

expansions chassis,

of

time,

and

CGA,

the

3-3

write

timing. Compression

for

propagation through

board, ensure that the board

the

of

the transfer

cables. Therefore, when using a Super-VGA

is

installed in the

time

does not leave enough

host

computer

time

chassis.

Spec

if

ications

I

Features

Another application that
mastering. Multi-processor applications, wherein

over the
hard-drive interfaces
interfaces. These types

chassis.

Although

has

Table

bus,

are not

the

interface kit

only

been tested with the

3-1

lists

the

Table

3-1.

Interface Kit Specifications

1

Specifications

is

not supported

supported.

or

bus-mastering

of

devices must

can

function

CH-EXP

~~ ~

specifications

Examples

DSP

be

with other expansion

Series

for

the

Expansion

by

the

of

this include

coprocessors

installed in the host computer

of

Interface Kit

a

"smart"

expansion chassis.

Chassis Interface Kit.

is

device

SCSI

and

CD

chassis,

bus

and

I

takes

IDE

ROM

it

3-4

I

Cable Length

Power Required

Operating

Temperature

Humidity

1

Three feet

LT

5 VDC

LR:

5

VDC

0

to

90%

at

1.3

at

1.4 A

ReIative

A

typical

typical

Humidity,

I

non-condensing

4

Maintaining

Maintenance and

This chapter provides information on maintaining and troubleshooting

your

expansion

the

Check
build-up
prevent
Under

normal

Air

the

on

overheating; refer

chassis.

Fi

air

filter

a

regular

conditions,

Air Filter
(under

lter

on

cover)

I

the

CH-Em12

basis

in

to

the

Expansion

order to maintain optimum air

Figure

4-1

for

filter should

the

last

for

Repair

Chassis

location

the

life

for

of

the

of

dust

flow

air

the

and

filter.

chassis.

to

Maintaining

the

I/

Screws

Filter Cover

Air

Filter

for

Figure

4-1.

Air

\

Screws

Filter

Filter

for

Cover

4-1

To

remove the air filter, remove the screws on the front panel that secure

to

the filter cover
and water solution, or blow it clean with compressed air. Replace the filter
if it becomes tom or brittle.
enhancement spray to improve dirt retention. These sprays
from a variety of utility sources. High efficiency filter material
available and can be cut to shape. Be careful not
airflow with excess filter media.

the chassis. Clean

In

the

filter by washing it

particularly dirty environments, use a filter

to

reduce

in

a mild soap

are

available

is

also

the

cooling

Tro

Warning

u b I

es

The air filter does not remove fumes

in

expansion chassis
airborne contaminants.

The expansion chassis is not rated
can use the expansion chassis
appropriately enclosed. Refer
appropriate to your type of environment.

Generally, dust poses no danger

exception

In

particularly dirty environments, floppy drive life

signrticantly reduced. Such environments may call for solid-state
cartridges.
portability. You
floppy drives.

hoot

i

n

is

electrically conductive dust such

Use solid-state cartridges in place of floppy

g

an environment containing potentially damaging

can

also

use networks

or

gases. Therefore, do not use the

for

use in explosive environments.

in

explosive environments only if it

to

the

NEMA

to

a

computer except for disk drives. The

standards

as

metal or carbon particles.

spans

in

dirty environments to replace

for

disks

the

enclosure

can be

for

You

is

4-2

Should a failure occur, use

the

Since

appearing in one component may actually be caused

component. For example,

controller. The simplest diagnostic technique calk for replacing the

suspect board with

except for the minimum required by
replacing each board

components

a

the

following troubleshooting procedures.

of

a computer

a

"video" problem may originate in

new

one.

until

you locate

are

largely interrelated, a problem

If

the problem persists, remove all boards

the

system. Then,

the

problem.

by

some other

the

run

the system,

Maintenance and

disk

Repair

A

generalized repair guide covering all possible computer problems is

beyond

CH-EXP

the

scope

of

this manual.

are

covered in the following sections.

Only

problems directly related

to

the

If

Warning

Unit

Does

-~

Some

of

the

following procedures involve working with

VAC.

Accidental shorting

contact

Not

Foilow

1. Check that

2.

3.

4.

with

this

voltage

Power

this

available at
Check that

properly
Check that
Check that

Note:

Table

specifications appropriate to your expansion chassis).

requirement

automatically shut down to prevent

Up when Switched

procedure:

the

power cord

the

the

1

for

your

the

front power switch is

at

least

The

power supply requires a minimum load to operate (see

1-2

on

page

is

not

of

circuits can damage the computer, while

can

kill or seriously

is

completely plugged

source.

I5/230V

local

selector switch

line voltage.

on.

one

board

is

plugged

1-7

or

Table

1-3

on

page

met, the chassis may power

damage

On

into the backplane,

110

VAC

injure

you.

in

and

that

(CH-EXPI2

1-10

up

to the power supply.

only)

for

the

power supply

If

this

momentarily, then

~

or

power

is

220

is

set

Troubleshooting

4-3

If

an

LED

on

the

Backplane

Follow this procedure:

1.

Check the actual voltage at one

Does

Not Light

of

the

UO

connectors.

Caution:

short

signal
pin

by

the warranty.

2.

Test
resistor. Otherwise, replace the

3.

Test
present at
backplane

or

the

4.

If

the

lead

5.

Test for
supply
supply

Be very careful when probing the

across

in

the

for

from

the

connector pins; if the supply
pin, the board could
the connector

resistance across the resistor.

the voItage at the power supply connector. If voltage is

the

is

faulty. Otherwise, the supply wiring has

power supply

power supply output is

the power supply.

the

voltage.

wiring,

is

faulty.

with

power connector, but not

is

If

backplane

be

your probe

faulty.

not

voltage

or

I/O.

YO

connectors.

pins

are

damaged.

In

addition, do not bend the

tip,

This

damage

If

open, then replace

LED.

at

the

I/O

connector, then the

present, disconnect

is

present,

If voltage is not present,

then

a

short

Do

shorted to a

is

not covered

the

an

open circuit

the

appropriate

exists

in

the

the

power

not

5

Factory

Before returning
notify

the Application Engineering Department,
applications engineer will diagnose and resolve
telephone.
engineer will issue
and ask
any documentation

shipping

Note that if

you

When returning equipment

information:

If

a

telephone resolution

you

to

return

container.

you

must

furnish the invoice number

Your

name,

The invoice number

A

description

Return Information

any

equipment

you

a

Return Material Authorization (RMA) number

the equipment. Please reference the

regarding

are

submitting

address,

of

and

and

the

problem

for

repair, please call

If

possible,

your

problem

is

not possible,

the

equipment

your

equipment

and

date

for

repair, please include the following

telephone number.

date

of

equipment purchase.

or

its

symptoms.

and

for

of

on

purchase.

the

applications

RMA

the outside

repair under

an

by

number

of

warranty,

in

the

the

Repackage

the original anti-static wrapping,

equipment.

Be careful

to

if

possible.

avoid electrostatic discharge; use

5-1

Specifications are subject to change without notice.
All Keithley trademarks and trade names are the property of Keithley Instruments, Inc. All other trademarks and

trade names are the property of their respective companies.

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4/02