Keithley 4200-SCS Reference Manual page 675

Model 4200-SCS Reference Manual
Remarks
Example
pulse_current_limit Sets current limit for the PG2
Purpose
Format
Remarks
See also
Example
4200-901-01 Rev. S / May 2017
Each channel of the PG2 can have a unique burst count. When a burst sequence is
triggered, the PG2 will output the specified number of pulses and then stop. The
pulse_trig function is used to start (or arm) the burst sequence (Burst or Trig
Burst).
With an external trigger source selected, the burst count for channel 1 cannot
NOTE
be less than the burst count for channel 2. Setting the burst count for channel
2 higher than the burst count for channel 1 may cause your system to stop
responding when pulse output is triggered to start. Also, when using one
channel, set the unused channel to the same burst count value. See
pulse_trig_source
The following function sets the burst count for the PG2 channel 1 to 10:
pulse_burst_count(VPU1, 1, 10)
This function sets the current limit of the PG2.
int pulse_current_limit(INSTR_ID instr_id, long chan, double
ilimit)
instr_id
chan
ilimit
Current limit can be independently set for each PG2 channel. Current limit values are
range dependent and can be set from -0.2 A to +0.2 A (5 V range, 50 Ω load) or -0.4 A
to +0.4 A (20 V range, 50 Ω load). Current limit is used to protect the DUT by using the
specified DUT load to calculate the voltage required to reach the current limit. A PG2
channel will not exceed the voltage required to reach the set current limit value at the
specified DUT load.
pulse_load
The following function sets the current limit of PG2 channel 1 to 1 mA:
pulse_current_limit(VPU1, 1, 1e-3)
Return to Section Topics
Section 8: Keithley User Library Tool (KULT)
for details on selecting an external trigger source.
Instrument ID of the PG2: VPU1, VPU2, and so on.
Channel number of the PG2: 1 or 2.
Current limit value (in amps, range and load dependent):
5 V range: -0.2 to +0.2
20 V range: -0.8 to +0.8
Default: 0.105 (5 V range)
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