18-82 SCPI Command Reference 2400 Series SourceMeter
®
User’s Manual
2440
<n> = -42 to 42 Specify V-Source limit
4 Set limit to 4V
8 Set limit to 8V
12 Set limit to 12V
16 Set limit to 16V
20 Set limit to 20V
24 Set limit to 24V
32 Set limit to 32V
33 to 42 Set limit to NONE
NONE Set limit to 42V
DEFault Set limit to 42V (NONE)
MINimum Set limit to 4V
MAXimum Set limit to 42V (NONE)
Query [:LIMit]? Query limit level
[:LIMit]? DEFault Query *RST default limit
[:LIMit]? MINimum Query lowest allowable limit
[:LIMit]? MAXimum Query highest allowable limit
Description This command is used to set the Over Voltage Protection (OVP) limit for
the V-Source. The V-Source output will not exceed the selected limit.
An exception to this is a parameter value that exceeds 160V for the
Model 2400, 500V for the Model 2410, 48V for the Model 2420, 80V
for the Models 2425 and 2430, or 32V for the Model 2440. Exceeding
those values allows the V-Source to output its maximum voltage. The
OVP limit is also enforced when in the I-Source Mode.
The limit parameter values are magnitudes and are in effect for both
positive and negative output voltage. You can express the limit as a posi-
tive or negative value.
If you specify a value that is less than the lowest limit, the lowest limit
will be selected. If you specify a value that is between limits, the lower
limit will be selected. For example, if you specify a value of 110 for the
Model 2400, the 100V limit will be selected.
WARNING Even with the voltage protection limit set to the lowest value (20V),
NEVER touch anything connected to the terminals of the SourceMeter
when the OUTPUT is ON. Always assume that a hazardous voltage
(>30V rms) is present when the OUTPUT is ON.
To prevent damage to DUT (devices under test) or external circuitry,
DO NOT program the V-Source to levels that exceed the voltage pro-
tection limit.
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