Keithley 7001 User Manual

IEEE-488 Reference
5-34
3. Command path rules:
A. Each new program message must begin with the root command, unless it is
optional (e.g., [:SENSe]). If the root is optional, simply treat a command word
on the next level as the root.
B. The colon (:) at the beginning of a program message is optional and need not
be used. Example:
:stat:pres = stat:pres
C. When the path pointer detects a colon (:) it will move down to the next com-
mand level. An exception is when the path pointer detects a semicolon (;),
which is used to separate commands within the program message (see next
rule).
D. When the path pointer detects a colon (:) that immediately follows a semico-
lon (;), it resets back to the root level.
E. The path pointer can only move down. It cannot be moved up a level. Execut-
ing a command at a higher level requires that you start over at the root com-
mand.
4. Using common commands and SCPI commands in same message:
Both com-
mon commands and SCPI commands can be used in the same message as long as
they are separated by semicolons (;). A common command can be executed at any
command level and will not affect the path pointer. Example:
:stat:oper:enab <NRf>; ptr <NRf>; *ESE <NRf>; ntr <NRf>
5. Program Message Terminator (PMT): Each program message must be terminat-
ed with an LF (line feed), EOI (end or identify) or an LF + EOI. The bus will hang
if your computer does not provide this termination. The following example shows
how a multiple command program message must be terminated:
:rout:open all; scan (@1:5) <PMT>
6. Command execution rules:
A. Commands are executed in the order that they are presented in the program
message.
B. An invalid command will generate an error and, of course, not be executed.
C. Valid commands that precede an invalid command in a multiple command
program message will be executed.
D. Valid commands that follow an invalid command in a multiple command pro-
gram message will be ignored. Example:
:rout:open all; harve; scan?
:open all will execute. Harve is an invalid command and will generate an error.
The scan query will be ignored.
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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