Technical data

Operation and Features 2
Programming the Overvoltage Protection
E364xA User’s and Service Guide 47
3 Enter the OVP menu and set the desired trip level.
LEVEL 22.0 V (E3646A)
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.
4 Enable the OVP circuit.
OVP ON
5 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
OVP1 and OVP2 annunciators turn 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 OVP1 or
OVP2 annunciator to flash depending on the output operated,
and the CC annunciator to turn on. The OVP1 (or OVP2) TRIP
message also appears on the display.
Clearing the overvoltage condition
When the OVP condition occurs, the OVP1 or OVP2
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 OVP1 (or OVP2) TRIP
if you allow the display to time- out after about several
seconds.
Over
Voltage
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Over
Voltage
Over
Voltage