Keithley 7001 User Manual

Controller Programs
C-9
IBM PC/XT/AT with National
GPIB PC Interface
Introduction
The following program sends a command message to
the Model 7001 from an IBM PC/XT/AT computer and
displays a response message on the CRT. The computer
must be equipped with the National GPIB PC Interface
and the DOS 2.00 (or later revision) operating system.
Interface software must be installed and conÞgured as
described in the instruction manual.
Directions
1. Using the front panel MENU key and the GPIB
menu item, set the primary address of the Model
7001 to 7.
2. With the power off, connect the Model 7001 to the
IEEE-488 interface installed in the IBM computer.
3. Type in BASICA on the computer keyboard to get
into the IBM interpretive BASIC language.
4. Place the interface software disk in the default
drive, type LOAD ÒDECLÓ, and press the return
key.
5. Add the lines below to lines 1-6 which are now in
memory. Modify the address in lines 1 and 2, as de-
scribed in the National instruction manual.
6. Run the program and type in the desired com-
mand message. For example, to request the cur-
rently deÞned Scan List, type in :SCAN? and press
the return key. The Scan List will appear on the
computer CRT.
10 CLS Clear screen.
20 NA$=”GPIB0”:CALL IBFIND (NA$,BRD0%) Find board descriptor.
30 NA$=”DEV1”:CALL IBFIND(NA$,M7001%) Find instrument descriptor.
40 V%=7:CALL IBPAD(M7001%,V%) Set primary address to 7.
50 V%=&H102:CALL IBPOKE(BRD0%,V%) Set timeouts.
60 V%=1:CALL IBSRE(BRD0%,V%) Set REN true.
70 INPUT “ENTER COMMAND MESSAGE “:CMD$ Prompt for command.
80 IF CMD$=”EXIT” THEN 160 See if program is to be halted.
90 IF CMD$+ “ “ THEN 70 Check for null input.
100 CALL IBWRT (M7001%,CMD$) Send command message.
110 IF RIGHT$(CMD$, 1) <> “>” THEN GOTO 70 Check for query command.
120 RD$=SPACE$(100) Define reading input buffer.
130 CALL IBRD(M7001%,RD$) Address 7001 to talk.
140 PRINT RD$ Display message response.
150 GOTO 70 Repeat.
160 V%=0:CALL IBONL(M7001%,V%) Close the instrument file.
170 CALL IBONL(BRD0%,V%)
180 END
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Keithley 7001 Specifications

General

Max Switching Voltage	300 V
Max Switching Current	1 A
Operating Temperature	0°C to 50°C
Switching Speed	1 ms
Interface	GPIB, RS-232
Switching Type	Various, depending on installed switch cards (e.g., electromechanical, solid-state)

Summary

Warranty

Limitation of Warranty

Limits of warranty coverage, remedies, and exclusions.

Safety Precautions

7001 High Density Switch System Specifications

SYSTEM

Core system parameters including capacity, memory, timing, triggers, and I/O.

ANALOG BACKPLANE

Details on analog backplane signals, voltage, current, and isolation.

IEEE-488 BUS IMPLEMENTATION

GENERAL

1 General Information

1.3 Warranty Information

Details and procedures related to product warranty.

1.5 Safety Symbols and Terms

Explanation of safety symbols and terms used throughout the manual.

1.6 Specifications

Technical specifications of the Model 7001 instrument.

2 Card Installation

2.2 Model 701X Series Card Installation

Steps for installing 701X series cards into the mainframe.

2.3 Non-701X Series Cards

Steps for installing non-701X series cards into the mainframe.

4 Front Panel Operation

4.2 Power-up Procedure

Steps for connecting power and starting the instrument.

4.5 Mainframe Programming

4.7 Card Config

4.8 Scan Config

5 IEEE-488 Reference

5.2 IEEE-488 Bus Connections

5.3 Primary Address Selection

5.6 Status Structure

7 Maintenance

7.2 Service Options

7.3 Static-Sensitive Devices

Precautions for handling static-sensitive components.

7.5 Disassembly

Procedures for removing instrument covers and boards.

7.6 Diagnostics

How to run the instrument's built-in diagnostic tests.

7.8 Troubleshooting

Guidance for diagnosing and fixing instrument malfunctions.

8 Replaceable Parts

8.2 Electrical Components List

8.4 Ordering Information

8.5 How to Obtain Factory Service

Process for returning the instrument for factory service.

6 Theory of Operation

6.2 Overall Functional Description

General functional overview of the Model 7001.

6.3 Control Function

Description of the instrument's internal control mechanisms.

6.4 Relay Control Circuitry