Keithley 6487 Reference Manual page 106

Model 6487 Reference Manual
This example is the same as before except that a setting for the ARM layer count to infinite
has been added. Now, after the INIT:IMM is received, the sweep will begin and all 11
points will be collected with no further commands required. Each point will be spaced
roughly two seconds apart (slightly longer due to the fact that the command sequence
leaves Autozero on). Once the sweep is complete, the source will go to 0V and will be
turned off, but readings will continue to be taken since the ARM count is infinite. These
readings will no longer be separated by the 2-second sweep delay, but instead will be col-
lected at the normal (Slow, 6 PLC) rate.
Status model
Bit 3 of the Operation Condition Register (Section 10) is used to indicate that a sweep is in
progress. It will be set true when the SOUR:VOLT:SWE:INIT command is received and it
remains high until either the last sweep point is completed or a SOUR:VOLT:SWE:ABOR
command is received.
Table 6-3
SCPI commands — sweeps
Commands
SOURce[1]
:VOLTage
:SWEep
:STARt <NRf>
:STOP <NRf>
:STEP <NRf>
:CENTer <NRf>
:SPAN <NRf>
:DELay <NRf>
:INITiate
:ABORt
:STATe?
INITiate
A) :VOLTage:SWEep:STARt <NRf>
This command programs the start voltage, which is the initial setting of the voltage source
during the sweep.
B) :VOLTage:SWEep:STOP <NRf>
This command programs the stop voltage, which is the final setting of the voltage source
during the sweep.
Description
SOURce1 subsystem:
Voltage source commands:
Sweep commands
Set start voltage: -505V to 505V.
Program stop voltage: -505V to 505V.
Program step voltage: -505V to 505V.
Program center voltage: -505V to 505V.
Program span voltage: -505V to 505V.
Set delay: 0 to 999.9999s.
Arm sweep, put source in operate.
Abort sweep, put source in standby.
Query if sweep running: 1 = sweep in progress.
Trigger sweep.
Buffer and Sweeps
Default Ref.
0V A
10V B
1V C
5V D
10V E
1s F
G
H
I
6-13