Keithley 2657A User Manual

Model 2657A High Power System SourceMeter® Instrument Reference Manual Section 2: General operation
2657A-901-01 Rev. B/December 2012 2-85
To set the primary address remotely:
gpib.address = address
To set the primary address remotely to 20:
gpib.address = 20
Note that changing the GPIB address takes effect when the command is processed. Any response
messages generated after processing this command are sent with the new settings. If command
messages are being queued (sent before this command has executed), the new settings may take
effect in the middle of a subsequent command message, so care should be exercised when setting
this attribute from the GPIB interface.
Terminator
When receiving data over the GPIB, the instrument terminates messages on any line feed character
or any data byte with EOI asserted (line feed with EOI asserted is also valid). When sending data, it
appends a line feed character to all outgoing messages. The EOI line is asserted with the terminating
line feed character.
General bus commands
General commands are commands that have the same general meaning, regardless of the
instrument (for example, DCL). The following table lists the general bus commands.
General bus commands
Command Effect on Model 2657A
REN
Goes into remote operation when next addressed to listen. See REN
(on page 2-85) for
details.
IFC Goes into talker and listener idle states. See IFC (on page 2-86) for details.
LLO
LOCAL key locked out. See LLO
(on page 2-86) for details.
GTL
Cancel remote; restore Model 2657A front-panel operation. See GTL
(on page 2-86) for
details.
DCL
Returns the Model 2657A and all devices on the GPIB to known conditions. See DCL
(on page 2-86) for details.
SDC Returns the Model 2657A to known conditions. See SDC (on page 2-86) for details.
GET Initiates a trigger. See GET (on page 2-87) for details.
SPE, SPD Serial polls the Model 2657A. See SPE, SPD (on page 2-87) for details.
REN
The remote enable (REN) command is sent to the Model 2657A by the controller to set up the
instrument for remote operation. Generally, the instrument should be placed in the remote mode
before you attempt to program it over the bus. Setting REN true does not place the instrument in the
remote state. You must address the instrument to listen after setting REN true before it goes into
remote operation.

Keithley 2657A Specifications

General

Brand	Keithley
Model	2657A
Category	Measuring Instruments
Language	English