Smu.source.protect.level - Keithley 2450 Reference Manual

Model 2450 Interactive SourceMeter® Instrument Reference Manual

smu.source.protect.level

This attribute sets the overvoltage protection setting of the source output.
Type TSP-Link accessible
Attribute (RW) Yes
Usage
limit = smu.source.protect.level
smu.source.protect.level = limit
limit
Details
Overvoltage protection restricts the maximum voltage level that the instrument can source. It is in effect when
either current or voltage is sourced.
This protection is in effect for both positive and negative output voltages.
When this attribute is used in a test sequence, it should be set before the turning the source on.
Even with the overvoltage protection set to the lowest value, never touch anything
connected to the terminals of the Model 2450 when the output is on. Always assume that a
hazardous voltage (>30 V
device under test (DUT) and external circuitry, do not set the voltage source to levels that
exceed the overvoltage protection value.
Example
smu.source.func = smu.FUNC_DC_VOLTAGE
smu.source.protect.level = smu.PROTECT_40V
Also see
Overvoltage protection
2450-901-01 Rev. B/September 2013
Affected by
Restore configuration
Instrument reset
Power cycle
Source configuration list
Function change
The limit value; set as smu.PROTECT_x where x is 2V, 5V, 10V, 20V, 40V, 60V,
80V, 100V, 120V, 140V, 160V, 180V, or NONE
) is present when the output is on. To prevent damage to the
rms
(on page 2-98)
Section 8: TSP command reference
Where saved Default value
Configuration script smu.PROTECT_NONE
Source configuration list
Sets the maximum voltage limit of the
instrument to 40 V.
8-141