-SCS Parameter Analyzer Reference Manual Section 13:
LPT library function reference
4200A-901-01 Rev. C / February 2017 13-139
pulse_current_limit
This command sets the current limit of the pulse card.
Usage
int pulse_current_limit(int instr_id, long chan, double ilimit);
The instrument identification code of the pulse card, such as VPU1 or VPU2
Channel number of the pulse card:
or
Current limit value (in amps, range and load dependent):
• 5 V range, 50 Ω load : −0.2 to +0.2
• 20 V range, 50 Ω load: −0.4 to +0.4
• 20 V range: −0.8 to +0.8
Default is 5 V range, 0.105
Pulse modes
Standard, Full Arb, Segment Arb
Details
You can set the current limit independently for each pulse card channel.
Current limit protects the DUT by using the specified DUT load to calculate the voltage required to
reach the current limit. A pulse card channel will not exceed the voltage required to reach the set
current limit value at the specified DUT load.
For information on the effect of loading on the limits, refer to
DUT resistance determines pulse
voltage across DUT (on page 5-61). For an example and values for load-line effect, refer to Example
5: Maximum voltage and current, high voltage range (on page 5-64).
Example
pulse_current_limit(VPU1, 1, 1e-3)
Sets the current limit of pulse card channel 1 to 1 mA.
Also see
pulse_load (on page 13-145)
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