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Using the Protection Function
Protection function
Each output has independent protection functions. A front panel status indicator will turn on when a protection
function is set. Protection functions are latching, which means that they must be cleared once they are set.
Of the following protection functions, only OV, OC, LIM+ and UVI are user-programmable.
– OV: Over-voltage protection is a hardware OVP whose trip level is programmable. The OVP is enabled by
default. In Load mode, the over-voltage protection level is not programmable and is fixed at 110% of the rated
input voltage.
– OV-: Negative voltage protection is a hardware OVP.
– OC: Over-current protection is a programmable function that can be enabled or disabled. When enabled, the
output will be disabled when the output current reaches the current limit setting.
– OT: Over-temperature protection monitors the temperature of each output and shuts down the output if any
temperature exceeds the maximum factory-defined limits.
– CP+: CP+ indicates that a positive power limit condition has disabled the output. Refer to
tection
for further information.
– INH: The Inhibit input (pin 3) on the rear panel digital connector can be programmed to act as an external shut-
down signal. Refer to
– LIM+: In CV, CP and CV mode, LIM+ indicates the output is in positive current limit. In CC mode, LIM+ indicates
the output is in positive voltage limit.
– UVI: Under-voltage inhibit (UVI) protection. UVI is disabled by default. Refer to
information.
Configuring protection
In Power Supply mode, the protection functions are configured on the Source Settings window
Press Source Settings to access the Source Settings window. Next, press Protection to access the protection
functions.
In Load mode, the protection functions are configured on the Load Settings window
Press Load Settings to access the Load Settings window. Next, press Protection to access the protection functions.
Keysight E36731A User's Guide
Inhibit Input
for further information.
Over-Power Pro-
Under Voltage Inhibit
for further
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