User Manual

2400 Series SourceMeter
®
User’s Manual Common Commands 16-3
Command reference
*IDN? — identification query
The identification code includes the
manufacturer, model number, serial number, and firmware revision levels and is
sent in the following format:
KEITHLEY INSTRUMENTS INC., MODEL nnnn, xxxxxxx, yyyyy/zzzzz /a/d
Where: nnnn is the model number.
xxxxxxx is the serial number.
yyyyy/zzzzz is the firmware revision level of the digital board ROM and
display board ROM, including date and time of build.
a is the analog board revision level.
d is the digital board revision level.
*OPC — operation complete
*OPC? — operation complete query
When *OPC is sent, the OPC bit in the Standard
Event Register will set after all pending command operations are complete. When
*OPC? is sent, an ASCII “1” is placed in the Output Queue after all pending com-
mand operations are complete.
Typically, either one of these commands is sent after the INITiate command. The
INITiate command is used to take the instrument out of idle in order to perform
measurements. While operating within the trigger model layers, all sent com-
mands (except DCL, SDC, IFC, SYSTem:PRESet, *RST, *RCL, *TRG, GET, and
ABORt) will not execute.
After all programmed operations are completed, the instrument returns to the idle
state at which time all pending commands (including *OPC and/or *OPC?) are
executed. After the last pending command is executed, the OPC bit and/or an
ASCII “1” is placed in the Output Queue.
*SAV <NRf> — save
*RCL <NRf> — recall
Parameters:0 = Memory location 0
1 = Memory location 1
2 = Memory location 2
3 = Memory location 3
4 = Memory location 4
Reads identification code
Sets OPC bit
Places a “1” in output queue
Save present setup in memory
Return to setup stored in memory