Tektronix 575 User manual

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EL 575~

easurement and Control System

For IBM PC/XT/AT, PS/2, and 100% Compatible Computers

Publication Date: November 1990 Document Number: 575-901-01 Rev. C

Third Edition (Novemberl990)

All rights reserved. No part of this manual may be reproduced in any form or by any electronic means, including information storage and retrieval systems, without permission in writing from Keithley . Changes are made periodically to the information contained herein. These changes will be incorporated in the new edition of this publication.

Keithley Instruments, Inc. warrants this product to be free from defects in material and workmanship for a period of 1 year from date of shipment.

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

During the warranty period, we will at our option, either repair or replace any product that proves to be defective.

To exercise this warranty, write or call your local Keithley representative, or contact Keithley headquarters in Taunton, MA. You will be given prompt assistance and return instructions. Send the product, transportation prepaid, to the indicated service facility. Repairs will be made and the product returned, transportation prepaid. Repaired or replaced products are warranted for the balance of the origmal warranty period, or at least 90 days.

MCLAIMER OF WARRANTIES AND LIABILITY

The information contained in this manual is believed to be accurate and reliable. However, Keithley assumes no responsibility for any errors, omissions, or inaccuracies whatsoever. Without limiting the foregoing, KEITHLEY DISCLAIMS ANY AND ALL WARRANTIES, EXPRESSED OR IMPLIED, INCLUDING THE WARRANTY OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE, WITH RESPECT TO THE INFORMATION CONTAINED IN THIS MANUAL AND THE SOFTWARE DESCRIBED HEREIN. The entire risk as to the quality and performance of such information and software is upon the buyer or user. Keithley shall not be liable for any damages, including special or consequential damages, arising out of the use of such information or software even if Keithley has been advised in advanced of the possibility of such damages. The use of the information contained in

the manual and software described herein is subject to Keithley, standard license agreement, which must be exe-

cuted by the buyer or user before the use of such information or software.

NOTICE

Keithley reserves the right to make improvements in the product described in this manual at any time and without

notice.

Data Acquisition Division 440 Myles Standish Blvd. Taunton, MA 02780 (508) 880-3000

All Keithley product names are trademarks or registered trademarks of Keithley Instruments, Inc. Other brand and product names are trademarks or registered trademarks of their representative holders.

This equipment generates, uses, and can radiate radio frequency energy and, if not installed and used in accordance with the instruction manual, may cause interference to radio communications. It has been tested and found to comply with the limits for a Class A computing device pursuant to Subpart J of Part 15 of FCC Rules, which are designed to provide reasonable protection against such interference when operated in a commercial environment. Operation of this equipment in a residential area is likely to cause interference in which case the user at hi own expense will be required to take whatever measures may be required to correct the interference.

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WARNING

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Use of this product constitutes acceptance of the terms and conditions of this

agreement.

You may not:

1. Provide use of the software to users who are not individually licensed by Keithley~

2. Make copies of the Users Manual or the software for distribution outside of your business or profession.

3. Make alterations in the software.

4 Grant sublicenses, leases, or other rights in the software to others.

5. Make verbal or media translations of the Users Manual.

6. Make modification for use on non-compatible hardware.

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Table of Contents

SPECIFICATIONS

General Specifications . . . . . . . . . . . . . . .

Standard Channel Capacity . . . . . . . . . .

Analog Input Performance, AMMlA . . .

Analog Input Performance, AMM2 . . . . .

Analog Trigger Performance . . . . . . . . . .

Analog Output Performance . . . . . . . . . .

Digital Input/Output Performance . . . . .

Power Control Performance . . . . . . . . . . ..........................

MODEL 575 SETUP AND OPERATION

Welcome to the Model 575

Features of the Model 575 ................................................ 2-3

ScopeofthisManual ................................................... 2-3

ConventionsUsedinfhisManual .......................................... 2-4

Software for the Model 575 ............................................... 2-4

SystemRequirements ................................................... 2-5

Unpacking the Model 575 ................................................ 2-6

Opening the Model 575 or Computer ....................................... 2-7

Installing the IBIN Card ................................................. 2-8

InstallingtheModel575 ................................................. 2-8

SoftwareInstallation ................................................... 2-11

KDAC500 Hardware Configuration ....................................... 2-12

Safe Control Setups ................................................... 2-12

Program Initialization at Power-Up ........................................ 2-13

TechnicalSupport .................................................... 2-14

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

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...... 1-3

......

1-3

l-3

...... 1-5

......

l-6

1-7

...... l-7

......

l-7

2-3

CONNECTING SIGNALS TO THE MODEL 575

Setting Up Measurement and Control ....................................... 3-3

SignalConnections .....................................................

“Channel” and “Slot” ...................................................

AnalogInput-Slot 1 Trigger - Slot 2

Option Slot - Slot 3 .................................................... 3-13

Analog output - Slot 4

DigitalI/O-Slot5 ................................................... 3-14

Power Control-Slot 6

External Input - Slot 7 ................................................. 3-16

AdvancedTopics ..................................................... 3-17

Gain ............................................................... 3-17

A/DConverterRange ................................................. 3-18

Single-Ended vs Differential Input ........................................ 3-18

MeasuringCurrents.. ................................................. 3-19

Measuring Floating Sources ............................................. 3-20

InputFiltering ....................................................... 3-20

AnalogoUtputRange .................................................. 3-21

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

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

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

3-3

3-4

3-8

3-10 3-13 3-15

MODEL 575 TECHNICAL REFERENCE

Introduction.. Communicating with the PC

InterfaceCard ........................................................

PowerSupply Model 575 Mother Board MotherBoardFunctions..

AnalogInput ........................................................

AnalogTrigger..

OptionSlot ..........................................................

Analogoutput .......................................................

DigitalInputandOutput RelayControl

ExternalInput .......................................................

CommandLocationsinNumericOrder

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

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OPTION MODULES AND INTERFACES

Introduction.. ........................................................

Keithley Module Library ModuleManuals IBIN Interface Card(s)

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

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

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

CALIBRATION, MAINTENANCE, AND TROUBLESHOOTING

4-l 4-l 4-4

4-4

4-6 4-11 4-11 4-16 4-19

4-21

4-26 429 431 4-34

5-3

5-7

5-9

Introduction CalibrationInformation When You Should Calibrate Environmental Conditions Recommended Calibration Equipment CalibratingtheAMMlAorAMM2 Calibrating the +5V Supply

Calibratingthe-10VSupply

Troubleshooting Information General Troubleshooting Isolating the Problem

SystemChecks.. ......................................................

PowerSupplychecks ..................................................

Mother Board Checks

SignalChecks ........................................................

AnalogInput ........................................................

AnalogOutput

DigitaiCircuitry ......................................................

Special Handling of Static Sensitive Devices

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

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PARTS LIST, SCHEMATIC DIAGRAMS, AND COMPONENT LAYOUTS

List of Replaceable Parts

OrderingInfonnation

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

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

6-3 6-3 6-3 6-4 6-4 6-4 6-4 6-5 6-5 6-5

6-7

6-9 6-10 6-10 6-10 6-13 6-13 6-13 6-13

7-3

List of Figures

2-l 2-2 3-l 3-2 3-3 3-4 3-5 3-6 41 42 4-3 44 4-5 6-l

AMM Module and Analog Trigger Cable .............................. 2-9

AMM Module Mounting Bracket ................................... 2-10

Model 575 Terminal Block ......................................... 3-3

Model 575 Mother Board .......................................... 3-6

Model 575 Sideboard ............................................. 3-7

Model 575 I/O Connections ........................................

Typical Trigger Modes

Single-pole Input Filter ........................................... 3-21

System Block Diagram ............................................ 4-4

System Mother Board ............................................. 4-7

SystemSideBoard..

Option Slot Pinout .............................................. 4-10

Power Control Pinout ............................................ 429

Power Supply Checks (Option Slot) ................................. 6-11

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

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

3-9

3-l 1

. . .

ill

List of Tables

3-l 3-2 3-3 3-4 41 4-2 4-3

4-4 4-5 4-6 47 48 5-l 5-2 5-3 6-l 6-2

Model 575 Functions and Channel Assignments Digital Channels and Ports Power Control Relays for the KM3 External Input Channels - Slot 6 Model 575 Slot Assignments Slot 1 &MM) Command Locations and Functions Slot 2 (TRIGGER) Command Locations and Functions Slot 3 (OPTION) Command Locations and Functions Slot 4 (ANALOG OUT) Command Locations and Functions Slot 5 (DIGITAL I/O) Command Locations and Functions Slot 5 (RELAY) Command Locations and Functions Slot 6 (EXT) Command Locations and Functions

Signal Conditioning Modules Module Power Consumption Module Self-ID Resistor Values Power Supply Voltage Tolerances

SignalChecks .................................................. 6-12

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

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

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

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

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

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

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

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

3-5 3-15 3-16 3-17

4-8

4-14 4-18 420 4-24 4-27 4-30 4-32

5-4

5-5 5-6

6-10

Model 575 Specifications

General Specifications Standard Channel Capacity Analog Input Performance, AMMI A Analog Input Performance, AMM2 Analog Trigger Performance Analog Output Performance

Digital Input/Output Performance Power Control Performance

General Specifications

Models:

575-l - base model 575 chassis with AMMlA E-bit Analog Master Measure-

ment module.

575-2 - base model 575 chassis with AMM2 16-bit Analog Master Measurement

module.

Host Computer Configuration:

IBM PC, XT, AT, and PS/2 models and 100% compatible personal computers with at least 512K of RAM, dual disk drives, approved DOS, color graphics card and monitor.

Interface and Bus Compatibility:

ISIN/A for PC/XT/AT bus and I’S/2 Model 25 and 30;

requires a half-length slot. IBIN-ES/:! for l?S/Z Microchannel bus; requires one full-length

PS/2

expansion slot.

Power Requirements:

5V @ 2A maximum from host computer (not including power requirement of optional plug in card). Can also be powered from any external source of 8-18V AC or DC @ 3A. Wall transformer power supply or automotive power cable available as options.

Expansion Slots: 2. One

slot normally used for AMMlA or AMM2 Master Analog Measurement Module. If analog input is not needed, both slots may be used for digital, analog output, stepper control, or pulse-counting modules.

Signal Connections:

Quick disconnect screw terminals and multi-pin ribbon cable connec-

tors.

Operating Temperature: 0 Storage Temperature: -20 Humidity (Non-condensing):

to 40 degrees C.

to +70 degrees C.

up to 80%.

Certification: Dimensions and Weight: 85mm Interface Cable: Supplied

Meets FCC part 15J, Class A.

6-foot, shielded.

software: KDAC500/1 Interpreter Software for IBM BASICA, Compaq BASICA,

and Microsoft GW BASIC, providing realtime interrupt-driven acquisition and control.

Standard Channel Capacity

Analog through external mass termination (typically used for Analog Devices 3B).

Trigger:

Trigger signal may be a dedicated trigger signal, or any analog input to the Model 575. The trigger output may trigger an A/D conversion, assert an interrupt request (IRQ) to the PC, or both.

Analog output: 2 channels Digital input and

channels. TTL compatible; high-true logic.

Power relay control: 16 channels

compatible low-true logic for power control.

input:

16 single-ended, or 8 differential channels. 8 additional single-ended channels

single differential input channel for monitoring an external signal acting as a trigger.

output: 32 channels total, programmable for input or output in groups of 8

Analog Input Performance, AMMI A

high x 241mm wide x 302mm deep. 3.0 kg

for sensing or control (uses two digital I/O ports). TTL

Input Channels:

Local: 8 differential or 16 single-ended inputs- Global input for analog in-

puts from option slot 3-10 (external input function).

l-3

LOCAL PROG

RAMMABLE

GAIN AMPLIFIER

Programmable Gains: xl, Gain Accuracy: &0.045% @ xl gain; &0.08% @ xl0

x10

Nonlinearity: +O.Ol%

Temperature Coefficient: Input Resistance: Input Bias Current: <InA Input Noise:

>lOOM.Q

<1001.~V p-p, O.lHz to 1OOkHz

&O.OOl% per degree C @ xl gain; 3~0.0017% per degree C @ xl0 gain

CMRR: >7OdB, DC to 6OJ32

Input Protection:

10.000 VOLT REFERENCE

Accuracy: &0.025% Temperature Coefficient: &0.0017% Noise:

25pV p-p, 0.1 to 1OHz

k3OV maximum with system powered, f15V maximum with system off.

per degree C

gain

GLOBAL AMPLIFIER AND A/D CONVERTER

AiD

Converter:

AID

Range: Resolution: 12 bits Conversion Time: Software Trigger:

Successive approximation type, self-calibrating for gain and offset.

Software selectable, 0 to +lOV unipolar and klOV bipolar-

(1 part in 4096)

161-15, including acquisition time

One-shot mode: A single reading is available 16@ after trigger location in memory is addressed. Continuous Mode: Conversions are continuously triggered every 16~s by internal crystal-controlled clock

External Trigger:

Continuous conversions begin with the falling edge of EXT TRIG input and

stop when trigger input is high. TTL-compatible. Noise: cl /2 LSB on ah ranges

Programmable Gains: xl, x2, x5, Gain Accuracy: +(0.04% +l Non-linearity: &0.033% Temperature Coefficient: &0.003% Filter: Software

selectable, 1OOkHz or 2kHz single pole.

xl0

LSB) @ xl gain; z&(0.15% +1 LSB) @ x2, x5, and xl0 gain.

per degree C.

l-4

Settling Time (to 0.05% of final reading): 12@ with 1OOkHz filter, 600@ with 2kHk

filter.

Analog Input Performance, AMM2

Input Channels: Local: 8 differential or 16 single-ended inputs. Global input for analog in-

puts from option slots 3-10 (external analog input function).

LOCAL PROG

Programmable Gains: Gain Accuracy: &0.016% @ xl gain; M.O25% @ xl0 gain Nonlinearity: Temperature Coefficient: Input Resistance: >lOOMQ

Input Bias Current: <lnA Input Noise: <5OpV

RAMMABLE GAIN AMPLIFIER

xl, xl0

zkO.Ol%

kO.OOl% per degree C @ xl gain; &0.0017% per degree C @ xl0 gain

p-p, O.lHz to 1OOkHz

CMRRz >8OdB, DC to 6OHz

Input Protection:

10.000 VOLT REFERENCE

Accuracy: &O-02% Temperature Coefficient: &0.0012%

k3OV maximum with system powered, kl5V maximum with system off.

per degree C

Noise: 2OpV p-p, 0.1 to 1OHz

GLOBAL AMPLIFIER AND A/D CONVERTER

A/D

Converter: Successive

approximation type, self-calibrating for gain and offset.

A/D Range: Software selectable, 0 to +lOV unipolar and +lOV bipolar.

Resolution: 16 Conversion Time: 201.15,

bits (1 part in 65,536)

including acquisition time

Software Trigger: One-shot mode: A single reading is available 20$3 after trigger location in memory is addressed. Continuous Mode: Conversions are continuously triggered every 2Ofi

by internal crystal-controlled clock

External Trigger:

Continuous conversions begin with the falling edge of EXT TRIG input and

stop when trigger input is high. TIL-compatible. Noise: ~0.005% of fuh scale rms on ah ranges and gains, >85dB signal to noise ratio (sine

wave rms signal to rms noise).

Programmable Gains:

xl,

x2, x5, x10

l-5

Gain Accuracy: rt(O.O2%

Non-linearity: 50.006%

+l LSB) @ xl gain; rt(O.O3% +l LSB) @ x2, x5, and xl0 gain.

Temperature Coefficient: M.O02%

Filter:

Software selectable, 1OOkHz or 2kHz single pole.

Settling Time (to 0.003% of final reading):

Analog Trigger Performance

Channels: Trigger

Software Strobe.

Ranges: 0 Resolution: Level Accuracy: 52% Input Impedance:

Input Protection: Input Coupling: Trigger Slope: Rising Input Connection:

AMM card for global amp connection supplied.

1, differential input

Source: External trigger input, Global Amplifier output of AMMlA or AMM2, or

to +lV, 0 to -IV, 0 to +lOV or 0 to -1OV.

8-bits

+l LSB.

1OW (External Input).

f3OV max (powered), kl5V max (unpowered).

AC or DC

or Falling Slope.

3-pin quick disconnect screw terminal block for external input. Cable to

per degree C.

16@ with 1OOkHz filter, SOOfi with 2kHz filter.

Revision

Level: For use with AMMlA or AMM2 Master Measurement Module Revision D

(July, 1989) or later.

Input filter:

Software-selectable single pole low-pass filter with the following characteristics:

-3db Frequency Settling time to 1/2LSB IMHZ

3ookHz 1ookHz

3olcHz lOkH2

3kHz

3.31-1s 1ocls

33p.s

1oofi 333@

1kHz

3OOHz

output:

1. Low-true trigger signal to mother board connector for triggering AMMlA or

3.3mS

AMM2 in adjacent slot, and or

2. interrupt request (IRQ) to host computer,

3. status register.

IRQ is open collector low-true pulse 500nS typical. A/D trigger signal is software selectable to

be either a 5OOnS low-true pulse, or a low-true level.

l-6

Analog Output Performance

Channel capacity: 2 Resolution: Ranges:

Output updating: Maximum output load: 2162 Settling time: Maximum output frequency: 2OOkHz Non-linearity: Accuracy: 33.15% Temperature coefficient: &0.0025%

13 bits (12 data bits plus polarity bit).

HOV, &5V, &2V, &lV

Instantaneous or global strobe update of analog output.

minimum. 100pF maximum.

5@S to 0.01% klLSB for any step size.

+lLSB

+5mV for *lOV range; &0.2% +4mV for other ranges.

Digital Input/Output Performance

Channel Capacity:

put or output.

Input Range: High Level Input Current: 20@ Low Level Input Current: -0.4mA

32 channels, non-isolated. Programmable in groups of 8 channels for in-

TIL compatible, high true.

per degree C.

Output Drive Capability: 10

Power Control Performance

Channel Capacityz

channels. Channels used for power control are taken from the available digital I/O port C and port D channels.

Input/Output Range:

Drive Capability:

state relays available for AC or DC

16, non-isolated. Programmable for power sense or control in groups of 8

TIL compatible, low true.

For use with optional KM3 mounting board and extension cable. Solid-

TIT loads, 20mA sink @ 0.5V.

sense

and control.

l-7

Model 575 Setup and Operation

Welcome to the Model 575 Features of the Model 575

Scope of this Manual Conventions Used in this Manual Software for the Model 575 System Requirements Unpacking the Model 575 Opening the Model 575 or Computer Installing the IBIN Card Installing the Model 575 Software Installation

KDAC500 Hardware Configuration Safe Control Setups Program Initialization at Power-Up Technical Support

Welcome to the Model 575

The Model 575 is a work station data acquisition and control device - an interface between a

personal computer and the real world. With this system, you can use various IBM, Compaq, and compatible personal computers for direct data acquisition and intelligent process control.

The Model 575 is a complete system. It integrates hardware, software, and documentation to make measurement and control technology easy to use. The Model 575 combines the most often used analog and digital I/O functions into a single package. It provides the convenience, performance, channel counts, and expansion capability normally associated with mainframe acquisition instruments with the economy of single-board type systems.

The Model 575 has two expansion slots, one of which is normally occupied by a master analog input module. This leaves one slot for other modules you might want to add. If your application does not require analog input, you may use both slots for expansion. (The STBPl/STEM module set may also be mounted in the expansion slots, but must be accessed through PEEK and POKE commands).

Features of the Model 575

Shielded all-metal case, external to the PC.

One option slot for adding a signal-conditioning module.

Accepts 12-bit (62.5kHz) AMMlA or 16-bit AMM2 (5OkHz) Master Analog Measurement Module. Add up to 32 more analog input channels via option slot.

Trigger circuitry for synchronizing data acquisition to external analog or digital events. Provides oscilloscope-like trigger modes. Add a TRGl module for specialized triggering based on two trigger input signals.

Dual high-speed 13-bit analog output channels- Add up to five more analog output channels via option slot.

Thirty-two digital I/O channels organized as four 8-bit ports A, B, C, and D. Progmmmable in groups of 8 channels for input or output. Add up to 32 more digital I/O channels via option slot.

Sixteen power control channels use digital I/O ports C and D. Programmable for sensing or switching of AC or DC loads. Up to 16 more power control channels via option slot.

* Convenient mass-termination connector for direct connection of up to 8 Analog Devices 3B

signal conditioning modules, or other single-ended analog inputs.

Memory-mapped interface for PC/XT, AT, PS/2, or compatibles.

Operates from power supplied by PC, or optional transformer or automotive cable. Requires 8-18V AC or DC @ 3A max.

Scope of This Manual

This manual is one of several documents you have received with the Model 575. Its purpose is to help you get your Model 575 fully operational and acquiring data as quickly as possible. The Model 575 manual will refer you to the manuaIs which came with your IBIN interface

card, analog master measurement module, and other modules you may have received with the Model 575. There is a place for these manuals at the end of the reference section of the Model 575 manual. Please insert them in the Model 575 binder and keep them handy through

the following discussions.

2-3

This manual presumes that you have a working knowledge of how to turn on your computer, load the disk operating system, and enter commands. If you are setting up a new computer for use with the Model 575, please complete the set-up. Verify that your computer is working correctly before you continue with the Model 575 installation.

Your computer may have two floppy disk drives, or a combination of floppy and fixed disk drives. You should be able to use the DOS commands which format diskettes, make directories, and change directories. You should also be familiar with techniques for copying individual files and groups of files from disk to disk for your particular configuration. You’ll also need to run Advanced BASIC (BASICA, GWBASIC, or GW-BASIC) and BASIC programs.

Please refer to the DOS manuals which came with your computer if you need to review any of these operations. The Model 575 manual does not replace the DOS or computer hardware manuals.

Conventions Used in This Manual

The following safety symbols and terms are used in this manual and are found on the instru-

ment:

Thesymbol ! A indicates that you should refer to the operating instructions in this manual

for further details.

The WARNING heading indicates dangers that might result in personal injury or death. Always read the associated information very carefully.

The CAUTION heading indicates hazards that could damage the instrument. Such damage may invalidate the warranty.

The NOTE heading indicates useful information which will simplify or otherwise explain a procedure.

From time to time, this manual will refer to the personal computer used to control and communicate with the Model 575. The computer will be referenced generically as “computer” or

‘TC” unless a given piece of information refers to a specific type of machine. If so, the com-

puter will be mentioned by name.

This manual will also provide instructions for entering commands and specific key strokes.

Keyboard functions such as “Control “, “Ah”, “Enter”, “Shift”, etc. will be abbreviated as they appear on most keyboards, and enclosed in brackets. Examples: <Ctrl>, cAlt>, <Enter>, <ShiftB.

Software for the Model 575

2-4

The Model 575 is shipped with KDAC500/1, a BASICA interpreter version of the KDAC500 software family. Optional versions of this software include KDAC500/B and KDAC5OO/M.

KDAC500/B is a Borland-compatible compiler version for use with Borland Turbo C and Turbo Pascal. KDAC500/M is compatible with Microsoft C, Quick C, QuickBASIC, Quick PACAL, and FORTRAN. Any references in this manual to KDAC500 are intended for the

“/I” interpreter version of the software.

The Model 575 is not compatible with Keithley’s Soft500 or Quick500. These packages predate the Model 575 and do not support all its features. This manual may direct you to another hardware manual which mentions Soft500 or Quick500. Generally, these remarks can be considered equally valid for KDAC500/1 unless noted otherwise.

If you have questions about the compatibility of the Model 575 with third-party software, check with Keithley or the publisher of the software.

System Requirements

The Model 575 is compatible with most personal computers using the PC/XT/AT bus or the Microchannel bus. These computers may use the V20, V30,8086,8088,80286, or 80386 processor.

The interface between the Model 575 and computer is the Keithley IBIN-A for PC, XT, AT, and I’S/2 models with conventional bus, or the IBIN-l?S/2 for ES/2 models with the Microchannel bus. Be certain that the interface you received with your Model 575 is the correct one for your computer.

Personal computers are available with a wide variety of disk drives, memory cards, video adapters, and other 575 will include the following elements:

Correct DOS version: For IBM personal computers, PS/2 systems, and compatibles, select the DOS version recommended by the computer manufacturer, but nothing earlier than IBM PC-DOS 3.1, Compaq DOS 3.0, or MS-DOS 3.0.

Sufficient Memory: The computer should contain 64OK for maximum data capacity. 512K is the minimum RAM requirement.

Disk Drives: running KDAC500 and most other data acquisition software can most efficiently be done from a fixed disk drive. While it is possibIe to use dual 360K floppy drives, the installation will not provide much room for data, nor will it provide the speed of a fixed disk.

Video Adapter: KDAC graphics require an IBM Color Graphics Adapter, IBM Enhanced Graphics Adapter, or Hercules Color Card. Most current EGA cards have 256K of video

memory. Such cards preclude addressing the IBIN interface card at AFF80 or anywhere in the memory block AOOOO-BFEFF. Use CFE80, or another address which does not conflict with the computer hardware.

accessories.

A workable computer configuration for use with the Model

2-5

For VGA-based video, you may need to locate the IBIN address in the DO00 page of memory or higher. No-bit VGA boards may require reconfiguration for 8-bit operation.

Hercules-type monochrome graphics cards may be used with KDAC500. However, KDAC graphics functions will not operate in Hercules graphics mode.

The dual-mode text-and-graphics adapter in Compaq portables is compatible with KDAC500 graphics.

Graphic adapters which make use of the computer’s non-ma&able interrupt require an installation of KDAC500 which does not use the computer’s NMI. See the KDAC500 manual for details.

NOTE: Some computers may offer switchable clock speeds. These computers should be operated only at clock speeds for which the software was installed.

NOTE: Installation of a math coprocessor will increase the speed of execution of KDAC500 commands handling graphics and data arrays. Interpreter BASIC does not generally recognize or use the coprocessor for BASIC functions. Make sure that any computer configuration switches associated with a coprocessor are correctly set, or your software or hardware may operate improperly.

KDAC5OO’s installation process will normally check the computer, BASIC, and other set-up parameters. If a compatibility problem exists with your computer, a message or some other indication will result during installation. For this reason, it is advisable to install KDAC500, even if you plan to use another software package exclusively. If you have any questions regarding suitability of a certain computer or hardware with KDAC500, contact Keithley Data

Acquisition and Control.

Unpacking the Model 575

The Model 575, documentation, and accessories are shipped in one or more cartons. Locate all

shipping cartons, and check that you have the following items.

In addition to the Model 575 manual which you are reading, you should have the following:

Model 575 Measurement and Control System

AMMlA or AMM2 Analog Master Measurement Module with mounting hardware and trigger cable assembly. (Model 575-l and 575-2 only).

IBIN-A or IBIN-l?S/2 Interface Card

Connecting Cable for the IBIN and 575.

Ground wire assembly

KDAC500/1 Diskette Set

KDAC500/1 Software Manual

Any options you may have purchased

2-6

If any items are missing, check the shipping paperwork to see if they have been back ordered. If a problem exists, contact

Keithley Data Acquisition

Opening the Model 575 or Computer

This manual will instruct you to open the case of the Model 575 and computer during instal-

lation and when making connections to the system-

’ WARNING: User supplied lethal voltage may be present on connections and option card. To avoid the possibility of electric shock, disable external power sources before making any adjustments or connections to this product. The Model 575 is

cally sensitive

areas, nor for connection to humans.

and Control customer support.

not for use in electri-

ALWAYS observe

the following safety rules during installation.

1. If you need to open the computer: A. Turn off or disconnect any equipment connected to inputs of the Model 575.

B. Turn off the computer and disconnect the power cord.

2. If you need to open the Model 575:

Set the Model 575 ON/OFF switch to OFF.

B. Turn off or disconnect any equipment connected to the inputs of the Model 575.

NOTE: It is not necessary to turn off the computer when you open only the Model 575 case.

’ WARNING: To avoid the possibility of electric shock, connect a safety ground wire from the ground post on the rear panel of the Model 575 to a safety ground. This wire is included with the Model 575, and is an important part of the instahation.

CAUTION: The Model 575, like the computer, is a delicate electronic device. Keep and op-

erate both at room temperature. If the Model 575 than 110 degrees F or less than 32 degrees F, allow them to return to normal room temperature (60 to 90 degrees Fl before you turn them on. Otherwise, serious damage may result.

CAUTION: Maintain enough space around each part of the system to provide ample cool-

ing

air.

not

block

ventilation grillwork at the

other equipment.

computer have been subjected to more

front

or back of the computer, on any

CAUTION: Do not exceed the input ratings of the Mode1 575. Apply no more than &15VDC to a non-isolated analog input of the Model 575.

CAUTION: Do not apply the Model 575.

CAUTION: Do not install or remove a module from the Model 575 option slot while power

to the Model 575 is on.

than i-5.5 VDC or negative voltages to any digital input of

2-7

Installing the IBIN Interface Card

The Model 575 requires that an IBIN-A or IBIN-l?S/2 interface card be installed in the com-

puter. This card contains circuitry which enables the PC to communicate with the Model 575.

For the following steps, you may consult the IBIN-A or IBIlW?S/2 manuals for further details. These manuals may refer to Soft.500 and Q&&500. For the purposes of interface installation, the information applies equally to the KDAC500/1 software package except as noted.

1. Turn off the PC and disconnect the power cord.

2. Consult the documentation which came with your PC for instructions on opening the cabinet. Remove the cover(s) from the computer in order to gain access to the expansion slots in the computer.

3. Locate your IBIN-A or IBIN-E/2 interface card and manual. If you are installing an IBIN-A, note the dipswitch bank which sets the interface address.

Check the IBIN manual for information on setting these switches. Generally, the address

“CFF80” can be used with the widest range of computer configurations. For CFF80, set switches 1,2, and 5-8 OFF, and switches 3 and 4 ON. Refer to IBIN-A manual for detailed steps to complete the IBIN configuration.

If you are installing an IBIN-E/2, there are no switches to be set. The card will be configured later through software.

4. You can plug the interface card into any appropriate expansion slot in the computer. (Slot 8 in the original IBM PC/XT should not be used.)

5. After the IBIN is installed, replace all screws, covers, and other hardware on the computer.

Installing the Model 575

The 575-l and 575-2 include an AMM module. You must install this module in the 575 before installing any option modules. The AMM modules are physically identical and are installed in the same way. Continue with the following steps after you have installed the interface in your computer.

I. Connect one end of the Model 575 cable to the mating connector on the interface card.

Tighten the screws on the cable end to the interface card connector.

2. Attach the free end of the connecting cable to the Model 575 and tighten the connector mews.

3. Attach one end of the safety ground to the binding post on the rear of the Model 575. Attach the other end of the ground wire to a properly grounded point.

’

WARNING: To eliminate the from the terminal post on the rear of the Model 575 to a safety ground. Plug the computer and other AC-powered equipment into a properly-grounded 3-wire receptacle.

4. If you have an AMMlA or AMM2 module or an option module, make sure the Model 575 is turned off. Unlatch the fastener on the side of the Model 575 cabinet and open the Model 575.

possibility of shock, connect an

18 AWG ground wire

2-8

5. Prepare the AMM module for installation. Confirm that trigger select jumper J3 on the A.MM module is over pins 1 and 2 (see Figure 2-l). Confirm that trigger select jumper W201 on the Model 575 mother board is over pins 1 and 2.

&2-

CHAMFER

IO,

JZOI

CmBAL

Figure 2-1. AMM Module and Analog Trigger Cable

l.,.‘L.

f _ GND c7-i1cH0cND

117

GLOBAL

Ah4rou-r

2-9

If you wish to connect your signals to the AMM module

at this time, cons& the sections

of this manual covering the appropriate topics. Remove the cable clamp along the back edge of the Ah4h4 module. Attach your input signals to the quick-disconnect blocks on the AMM module and replace the connectors. Replace the cable clamp and attach the

mounting saew

nearest the card edge connector on the AMM module. A small right-angle bracket and screw are included to fasten the rear comer of the AMM module to the rear panel of the Model 575. Install this bracket to the other cable clamp

mounting mounting screw (see

hole on the rear comer of the AMM module with the remaining cable clamp

Five Z-2).

End View

Side View

t==@q5&b

Threaded Hole

Figure 2-2. AMM Module Mounting Bracket

8. Install the module in the Model 575 now. Hold the module ing upward. Insert the forward edge of the module into the lower module guide located on the power supply shield,

and

slide the module into the lower option slot connector,

Fasten the support tab to the rear panel of the Model 575 with the supplied screw.

9. Attach the trigger cable from the GLOBAL OUTPUT J7 at the top edge of the AMM module to the trigger GLOBAL INPUT terminal J201 on the Model 575 mother board using the supplied cable. Pay close attention to the orientation of the beveled comer on the connector at each end of the cable. (see Figure 2-l).

NOTE: If you reverse the connections of the trigger transmission cable at J7 or J201, you may introduce noise into all analog input measurements, or invert the polarity of the trigger signaL

Bracket

with

the component side fac-

2-10

10. To install an optional module, see the manual for your option module for any required configuration of gains, ranges, switches, etc. Set up the module and

make connections

according to your application. Hold the module with the component side facing upward. Insert the forward edge of the module into the upper module guide located supply shield, and slide the module into the upper option slot connector.

Attach

the power

rightangle bracket to the rear comer, plus any necessary mounting screws or strain relief to complete the hardware installation.

11. If you are powering the Model 575 from the optional

external

transformer, set the switch SW301 located on the Model 575 side board “up” for external power and connect the transformer plug to the rear of the Model 575. Plug in the transformer.

CAUTION: DO NOT switch the “PCEXT” erating the 575 off the transformer supply. This can send a transient through the PC’s 5V supply and crash the computer system. It does no damage to the 575, but may damage the computer under some conditions. To return to internal power, first turn off the computer.

power

switch inside the 575 to “PC” when op-

Leave the 575 turned on and then unplug the transformer from the back of the 575. Wait a few minutes for the voltage to decay in the 575 power supply. Turn the 575 off, and then

set the internal switch to “PC”. Turn the computer and 575 back on.

12. Connect the power cable of the PC to a properly grounded 3-wire outlet.

13. If this is a floppy disk system, insert your DOS diskette in Drive A:.

14. Turn on the computer. It should complete power-on self test and boot as usual. If the computer behaves abnormally during or after the power-on self test, or if you encounter error messages or other problems, turn off the computer and check your work. If you cannot solve the problem, contact Keithley Data Acquisition and Control Applications Sup-

port

15. If you are installing the Model 575 in a l?S/2 computer with Miaochannel architecture, you should now do the hardware configuration as described in the IBlN-PS/2 manual. This procedure makes reference to a Soft500 diskette as the “option diskette”. For KDAC500/1, the option diskette is the Supplemental Diskette. The necessary disk file is

“a6571 .ADF”. Note that you must perform this installation with a “backup copy” of the

IBM Reference diskette as described in your computer documentation.

This completes installation of the Model 575 hardware.

A Note

External Power Supplies

The Model 575 can be powered by several different methods. Normally, the system operates from +5V which it receives from the computer bus through the IBIN card and cable. The

power supply section of the Model 575 converts a portion of this power to Cl5V which is also required by the Model 575.

The maximum current draw of the Model 575 is specified as 2A. Generally, a computer with

at least a 60W power supply and no high-current options will be sufficient. Example of highcurrent options include some types of video and memory cards, and older, full-length plug-m modem cards. If you have a marginal problem, it may become evident as a failme of the system to boot on power up, or frequent disk access or memory errors. A severe problem will probably result in the computer power supply or Model 575 power supply shutting down immediately upon power-up (the “ONLINE” or “POWER” light may flicker).

If a problem exists, the Model 575 may be powered by an external source of 8-18V AC or DC.

The actual source of power may be an external AC transformer, DC supply, or automotive

power connection. NOTE: If you operate the 575 using the 15-foot “CABL-15” cable, you will require the external

power supply.

CAUTION: DO NOT switch the ‘TUEXT” power switch inside the 575 to “PC” when operating the 575 off the transformer supply. This can send a transient through the PC’s 5V supply and crash the computer system. It does no damage to the 575, but may damage the computer under some conditions. To return to internal power, first turn off the computer. Leave the 575 turned on and then unplug the transformer from the back of the 575. Wait a few minutes for the voltage to decay in the 575 power supply. Turn the 575 off, and then set the internal switch to “PC”. Turn the computer and 575 back on.

Software Installation

You should now install your data acquisition software. Consult the manual which accompanies the software for complete installation instructions. The Model 575 package includes

2-11

KDAC500/1 software, which supports all functions of the Model 575. You may use KDAC500 or any other software package which supports the Model 575.

If you are using KDAC500, consult the KDAC500/1 manual now, particularly the sections

covering installation for your particular disk drive and memory configurations.

have installed a working copy of KDAC500 to a floppy or fixed disk, continue with the following configuration information to create a KDAC500 hardware configuration file for the

Model 575.

Hardware Configuration

Virtually all data acquisition software packages include some form of utility which supplies the software with a record of your specific data acquisition hardware and how it is set up. Most configuration utilities generate a file which is read into the software when you run the package.

You should now run the configuration utility for your chosen software package. Consult yur software documentation for specific instructions.

Safe Control Set-Ups

After you

Keithley Instruments manufactures its data acquisition and control products to the highest technical and safety standards. However, you, the user of this equipment, have ultimate control over how the equipment is used in the field. It is important that you follow safe operating procedures, especially where you are controlling external equipment or processes which are sensitive to power-on sequences or drive levels.

When the Model 575 is turned on, all digital channels on the Model 575 mother board power up as digital inputs, and the analog output channels stabilize at OV output. These outputs will remain off until commanded to change state. Note, however, that any output module mounted in the Model 575 option slot may initialize with random output levels when the

Model 575 is turned on. See the manual covering the specific module for more details.

If you are using an optional output module and its power-on output levels are important, you may want to use the HARDINIT.EXE utility which is included in the KDAC500/1 software. HARDINlT.FXE will set the output levels of all analog and digital outputs to 0, including those on any module in the option-slot. Note that there will still be a short period between power-on of the computer and execution of I-IARDINlT where the output of optional digital or analog output modules may be random.

Consult the KDACSOO/I Software Manual for instructions on setting up and using HAR-

DINlT.EXE. Normally you will not need to use HARDINIT.EXE unless you plug a digital or

analog output module into the Model 575 option slot.

2-12

Please consider the following points about the Model 575 and your particular applications when you design control configurations:

Where loss of power, interruption of the control program, or failure of any equipment can lead to unsafe conditions, do not leave equipment unattended.

Before you energize any external equipment or processes, make sure the computer and Model 575

During power-up of the Model 575, a power-on reset circuit holds the Model 575’s out-

have

been switched on and have stabilized.

puts off for a few seconds. Outputs will not respond to programmed changes during this time- After the power-on reset period, the outputs will remain off until programmed to change state.

If you are using the HARDINIT utility, wait until the computer has fully executed HAR-

DINIT before powering up any external equipment or processes.

Revision A, B, and C of the DOMl, PCMl, and KM.2 modules, which you may use in the Model 575 option slot, do not contain a power-on reset (the

feature was

added with Revision D). Output lines on pm-Rev D. modules may power up in a random state under some circumstances. Do not use pre-Rev D. versions of these modules where random output at power up is undesirable. Where necessary, use the HARDINLT.EXE utility to reset these modules at power-up. Older modules can be factory-modified to include the power-on reset. Contact Keithley Data Acquisition and Control for more information.

DIOl modules do not contain a power-on reset. Use the DIOl only to sense TTL level digital signals, or for digital applications where random output at power-up is of no consequence. Use HARDNIT where necessary. DIOIA modules do contain power-on reset.

The AOMI, AOM2, AOM3, and AOM4 analog output modules do not contain a power-

on reset. Therefore, these modules may power up with random output. Properly initialize all analog output channels with HARDNT or a KDAC500 program before applying power to external equipment or processes. AOM5 modules do contain power-on reset.

AIM7 modules do not incorporate an “open thermocouple sense”. Make sure thermocou-

ple used with the AIM7 are in good condition and operating properly.

The CALL KDINTT command in KDAC500 will initialize digital and analog output chan-

nels to 0, and can be called after KDAC500 has loaded.

10.

In some cases, external equipment or processes must be returned to a particular state be-

fore control can be interrupted or power can safely be removed. For power-down, turn

off

otherwise prepare external equipment before turning off the computer or Model

575.

Program Initialization at Power-Up

The following techniques can be used with KDAC500/1 software to implement automatic hardware initialization and program recovery under many circumstances. For other software, consult the appropriate documentation.

CAUTION: Any momentary loss of +5V power on the computer bus will cause the reset

circuitry in the

To execute a KDAC500 test program automatically when KDAC500 loads:

A. Write and debug a KDAC500 program to perform the desired measurement or con-

troL

B. Boot the computer and then enter the command KDAC500 <your program name>.

The KDAC.500 test program will execute automatically when KDAC500 loads.

To initialize all output modules to 0 when the computer and data acquisition system are

turned on (the system will pause and prompt for the data acquisition system to be turned

on): A. Modify the AUTOEXECBAT file on disk from which computer boots to execute the

KDAC500 HARDINIT utility. Include the HARDING’ pause option (“-p”) to remind that data acquisition system must be on.

Model

575

to return the

digital and

analog output circuitry to the reset state.

2-13

B. Make sure all external equipment is turned off. C. Boot the computer using an AUTOFXEC.BAT file containing the KDAC500 HAR-

DlNlT command.

D. When HARDINIT instructs, confirm that the data acquisition system is on, and then

press the <Enter> key.

E. When AUTOEXECBAT completes execution, all outputs will be initialized.

To initialize all output modules to 0 when the computer and data acquisition system are re-energized after a power failure (the control program will not be restored):

NOTE: Output channels may produce random levels until HARDINIT initializes hardware.

A. Modify the AUTOEXECBAT file on the disk from which computer boots to execute

the KDAC500 HARDJNlT utility. DO NOT use HARDINJT’s pause option (“-p”).

B. When power is restored, AUTOEXECBAT will execute HARDINIT and automati-

cally initialize output hardware to 0.

4. To initialize all output modules to 0 and resume a control program when computer and data acquisition system are re-energized after a power failure:

NOTE: Output channels may produce random levels until HARDINIT initializes hardware.

A. Modify the AUTOEXEC.BAT file on disk from which computer boots to execute

KDAC-500 HARDINIT utility. DO NOT use HARDINIT’s pause option (“-p”).

B. Add as a last line of the DOS AUTOEXEC.BAT file a command to execute KDAC500

and your program: KDAC500 cyour program name>. If necessary, include a DOS Cl-Dir command before the KDAC500 command to move to the directory containing

KDAC5OO.

‘Write and debug a JXDAUUU program to perform the desired measurement or con-

trol task.

D. When power is applied to the computer, AUTOEXECBAT will execute HARDINlT.

HARDINIT will initialize all output channels to 0 automatically. AUTOEXEC.BAT will then run KDAC500 which will automatically execute AUTOEXJZC.BAS and your

KDACXKI test program.

----

Technical Support

If you experience any difficulty with the Model 575 or your software, first try to determine whether the problem lies with software or hardware. You can contact Keithley technical support at (508) 880-3000. Before you call, please have the following jnformation available.

Your computer make, model, and type, including amount of RAM, disk drives, and

whether you have a coprocessor chip. Be specific; “clone” is meaningless.

The type of data acquisition software you are using with the Model 575.

Your DOS version.

A printout of your DOS AUTOBXEC.BAT and CONFIGSYS files. If you are running KDAC500, also have a copy of your KDAC5OO.BAT and INSTALLXIF files.

A list of any options of special configuration in your computer or the Model 575.

If at all possible, have your computer and data acquisition system powered up and accessible when you call. If the problem seems to be more with third-party software than the Model 575,

consider

2-14

contacting

the publisher of the software.

Connecting Signals to the Model

Setting Up Measurement and Control Signal Connections ‘Channel” and “Slot” Detailed Connection Information Analog Input - Slot 1 Trigger - Slot 2 Option Slot - Slot 3 Analog Output - Slot 4 Digital l/O - Slot 5 Power Control - Slot 5

575

External Input - Slot 6 Advanced Topics Gain A/D Converter Ranges Single-Ended vs Differential Input Measuring Currents Measuring Floating Sources Input Filtering Analog Output Ranges KDAC560 Hardware Configuration Table If You Have Trouble SHELLing to CONFIG.EXE

Setting Up Measurement and Control

The Model 575 permits you to conveniently make measurements and generate control signals for a wide variety of conditions. This section of the Model 575 manual presents information you will need for setting up the various acquisition and control functions of the Model 575.

Signal Connections

The Model 575 uses quick-disconnect terminal blocks for convenient connection and disconnection of signal leads. The AMMIA, AMM2 and AIM3A modules also provide for a ribbon cable mass termination for analog input connections. This hardware is available with newer AMMlA and AMM2 modules.

Open your Model 575 and you will note a series of brown screw-terminal blocks mounted on the rear of the Model 575 mother board. These terminals are for digital I/O. You will also note a pair of smaller brown terminal blocks located at the front of the mother board near the front panel. These terminals are for analog output and trigger input. Finally, the AMMlA or AMM2 module, as well as most other modules you may mount in the remaining option slot, will have these brown terminal blocks. See Figure 3-1.

TOD View

0 0 0 0 0 0 0 0 0

II’

‘II

100000000001

Set Screw

Side View

Wire Receptacle

Figure 3-l. Model 575 Teiminal Block

A quick-disconnect terminal block can be removed from the mother board by pulling it

straight off the motherboard with a firm, even pressure. Do not pry the terminals with a screwdriver or sharp object, or you may damage the board.

CAUTION: Some older Keithley signal conditioning modules do not have removable ter-

minal blocks. These blocks are blue, rather than brown. You may find these types of terminals on modules which you are installing in the Model 575 option slot(s). Do not attempt to remove the blue

terminal

blocks or you will damage the board.

3-3

To make connections to a quick-disconnect terminal block, first strip 3/16 of insulation the end of the wire which you want to attach. Loosen the desired terminal screw on the block and slide the bare end of the wire into the hole beneath metal tab visible in the hole. Tighten

the screw to compress the tab against the wire.

After you have attached all the desired signal wires to a terminal block, replace the terminal block on the mother board or module from which it was removed.

There are also four “D” holes each in the Model 575 front and rear panels that will accommodate standard BNC connectors. To install a BNC connector in the front panel, use a pointed knife to cut the pane1 overlay (the rear panel holes are open). Solder leads to the BNC connector and mount the connector in the open hole. Connect the leads to the desired terminal block according to the steps listed above. The rear panel also contains an empty area which can be

custom punched for your own special connectors.

“Channel” and “Slot”

This manual uses the terms “slot” and “charmer. Channel refers to an independent path over which signals travel between the Model 575 and the outside world. Individually-numbered screw terminals on each Model 575 terminal block provide connection to its various input and output channels. One to three screws make up a channel connection, depending on the type of measurement or control signal.

from

The meaning of “slot” is not as obvious as “channel”. The Model 575’s companion product, the 5OOseries, will accept up to 10 optional I/O modules which plug into physical slots on the Model 500 mother board. Thus, one describes modules as being mounted in certain “slots”.

The Model 575 has two physical slots in which modules may be mounted. One slot is normalIy occupied by an AMMlA or AMM2 module, leaving the other slot for an optional signal conditioning module. However, the term “slot” is still associated with other I/O functions on the Model 575 mother board. The test software views the Model 575 as a series of slots into which certain modules have been mounted. Some of these are “virtual” slots which consist of circuitry built into the Model 575 mother board. Table 3-l shows these I/O functions and their corresponding slot numbers.

The following information describes connections and jumpering for the various functions of the Model 575. You should also consult the manual for the AMMlA or AMM2 if one is mounted in slot 1. Similarly, consult the documentation for any optional module you have mounted in slot 3. Throughout the following discussion, refer to Figure 3-2,3-3, and 3-4 which are component and terminal I/O drawings of the Model 575 mother board and sideboard.

+ 95 hidden pages

Tektronix 575 User manual

Specifications and Main Features

Frequently Asked Questions

User Manual