Keithley 7001 User Manual

IEEE-488 Reference
5-59
Bit 5, Event Summary Bit (ESB)  Set bit indicates that an enabled standard event has oc-
curred. The event can be identified by reading the Standard Event Status Register using the
*ESE? query command (see paragraph 5.10.2).
Bit 6, Master Summary Status (MSS) / Request Service (RQS)  Set bit indicates that one
or more enabled conditions have occurred to generate a service request (SRQ). Note that the
IEEE-488.1 standard designates Bit 6 as the RQS bit and is read by performing a Serial Poll.
Bit 7, Operation Summary Bit (OSB)  Set bit indicates that an enabled operation event has
occurred. The event can be identified by reading the Operation Event Status Register using the
following SCPI command structure:
:STATus:OPERation?
See paragraph 5.16 for details.
10 OUTPUT 707; “*SRE?” ! Request contents of register
20 ENTER 707; A$ ! Address 7001 to talk
30 PRINT A$ ! Display value of register
40 END
Programming
example
Figure 5-16
Status Byte Register
B7 B6 B5 B4 B3 B2 B1 B0
(2 )
7
(2 )
6
(2 )
5
(2 )
4
(2 )
3
(2 )
2
32
0/1
Bit Position
Event
Decimal Weighting
Value
Value : 1 = Event Bit Set
0 = Event Bit Cleared
Events : OSB = Operation Summary Bit
MSS = Master Summary Status
RQS = Request Service
ESB = Event Summary Bit
MAV = Message Available
QSB = Questionable Summary Bit
EAV = Error Available
OSB ESB MAV QSB EAV
0/1 0/1 0/1 0/1
128 16 8 4
MSS,
RQS
64
0/1
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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