Keithley 2520, User Manual, Page: 145 / 329

10-6 Remote Operations Model 2520 User’s Manual
Primary address
The Model 2520 ships from the factory with a GPIB primary address of 25. When the unit
powers up, it momentarily displays the primary address. You can set the address to a value
from 0 to 30, but do not assign the same address to another device or to a controller that is
on the same GPIB bus (controller addresses are usually 0 or 21).
The primary address can be checked and/or changed from the COMMUNICATIONS
SETUP menu accessed with the COMM key. This menu option also allows you to select
the 488.1 or SCPI protocol (
Appendix G ).
To set the primary address:
1. Press the COMM key.
2. Select GPIB, then press ENTER.
3. Use the EDIT keys to set the primary address to the desired value, then press
ENTER.
4. Select GPIB or 488.1 protocol, then press ENTER. (See Appendix G for details.)
5. Press EXIT to return to normal display.
General bus commands
General commands are those commands, such as DCL, that have the same general mean-
ing regardless of the instrument.
Table 10-1 lists the general bus commands.
Table 10-1
General bus commands
Command Effect on Model 2520
REN
IFC
LLO
GTL
DCL
SDC
GET
SPE, SPD Goes into remote when next addressed to listen.
Goes into talker and listener idle states.
LOCAL key locked out.
Cancel remote; restore Model 2520 front panel operation.
Returns all devices to known conditions.
Returns Model 2520 to known conditions.
Initiates a trigger.
Serial polls the Model 2520.