2 Operation and Features
Programming the Overvoltage Protection
36 E3632A User’s Guide
3 Enter the OVP menu and set the desired trip level.
LEVEL 32.0 V
You will see the above message on the display when you
enter the OVP menu. Adjust the control knob for the
desired OVP trip level. Note that you cannot set the trip
levels to lower than 1.0 V.
4 Enable the OVP circuit.
OVP ON
You will see the above message after pressing
.
5 Exit the OVP menu.
CHANGED
The CHANGED message is highlighted for a second to show
that the new OVP trip level is now in effect. If the OVP
settings are not changed, NO CHANGE will be displayed.
The power supply will exit the OVP menu and the display
will return to the meter mode. Check that the OVP
annunciator turns on.
Checking the OVP operation
To check OVP operation, raise the output voltage to near the
trip point. Then very gradually increase the output by
turning the knob until the OVP circuit trips. This will cause
the power supply output to drop to near zero, the OVP
annunciator to flash, and the CC annunciator to turn on. The
OVP TRIPPED message also appears on the display.
Clearing the overvoltage condition
When the OVP condition occurs (the OVP TRIPPED message is
shown on the display), the OVP annunciator flashes. When it
was caused by external voltage source such as a battery,
disconnect it first. The following steps show how to clear the
overvoltage conditions and get back to normal mode
operation. In the following steps, the display will go back to
OVP TRIPPED if you let the display time- out after about
several seconds.
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