Keithley SSIO-24 User Manual

SSIO-24 Digital I/O Board

User 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 error­free 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

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User Guide

for the

SSIO-24

Digital I/O

Board

Revision C – August 2002

Copyright © Keithley Data Acquisition 1991

Part Number: 81250

Keithley Instruments, Inc.

28775 Aurora Road, Cleveland, OH 44139

[phone] • Fax: [phone]

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Basic™ is a trademark of Dartmouth College.

IBM® is a registered trademark of International Business Machines Corpora-

tion.

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.

DriverLINX is a registered trademark of Scientific Software Tools, Inc.

All other brand and product names are trademarks or registered trademarks
of their respective companies.

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.

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

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

Operators

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

Maintenance personnel

properly, for example, setting 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

pairs 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.

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,

the circuit 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.

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

is the individual or group responsible for the use and maintenance of

are trained to work on live circuits, and perform safe installations and re-

A good safety practice is to expect that hazardous voltage is present

Safety Precautions

perform routine procedures on the product to keep it operating

no conductive part of

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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 connections.

If you are using a test fixture, keep the lid closed while power is applied to the device under
test. Safe operation requires 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
or death. Always read the associated information very carefully before performing the indi­cated procedure.

The
Such damage may invalidate 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.

!

WARNING

CAUTION

heading in a manual explains dangers that might result in personal injury

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

Contents

CHAPTER 1: INTRODUCTION

1.1 Overview. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1

1.2 Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1

1.3 Accessories . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2

CHAPTER 2: INSTALLATION

2.1 Overview. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1

2.2 Terminal Block TB7. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1

2.3 Port Direction Switch S1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-3

2.4 Mode Selection Block J3 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-4

2.5 Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-6

2.6 Connector Pin Assignments . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-8

CHAPTER 3: PROGRAMMING

3.1 Overview. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1

3.2 Examples . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1

CHAPTER 4: FACTORY RETURNS

4.1 Fuse Replacement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1

4.2 Return Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1

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