Keithley 7001 User Manual

IEEE-488 Reference
5-94
[:LEVel]? Query logic level of specified line
Shortform formats: :sour:ttl?
:sour:ttl2?
:sour:ttl3?
:sour:ttl4?
Response message: 0 (false) or 1 (true)
These commands are used to set the logic levels for the digital output port. The actual level (high
or low) of a digital output line depends on its programmed polarity (see OUTPut Subsystem).
If the polarity of a line is active-high, then that line will be high when it is set to be true (1 or
ON), and low when it is set to be false (0 or OFF). Conversely, if the polarity is active-low, the
line will be low when it is set to be true, and high when it is set to be false.
10 OUTPUT 707; “:sour:ttl on; ttl?”
20 ENTER 707; A$
30 PRINT A$
40 END
Line 10 Sets output line #1 to true, and then queries the state of the output line.
Line 20 Addresses the 7001 to talk.
Line 30 Displays the state of output line #1 (1; on).
Query
command
Description
Programming
example
:SOURce Subsystem
Artisan Scientific - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisan-scientific.com

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