Technical data

Operation and Features 2
Programming the Overvoltage Protection
E364xA User’s and Service Guide 43
2 Enter the OVP menu and set the desired trip level.
LEVEL 22.0V (E3640A)
Use the knob and the resolution selection key or
to set the desired trip level. Note that you cannot set
the trip levels to lower than 1.0 V.
3 Enable the OVP circuit.
OVP ON
4 Exit the OVP menu.
CHANGED
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 if the OVP circuit is enabled.
Checking the OVP operation
To check the 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 annunciator
flashes. When it was caused by an external voltage source
such as a battery, disconnect it first. Clear the overvoltage
condition by adjusting the output voltage level or by
adjusting the OVP trip level.
The following steps show you how to clear the overvoltage
condition and return to the normal mode operation. In the
following steps, the display will return to OVP TRIPPED if you
allow the display to time- out after about several seconds.
Over
Voltage
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Over
Voltage
Over
Voltage