Programming Overvoltage Protection; Setting The Ovp Level And Enable The Ovp Circuit; Programming Overvoltage Protection' Starting - Agilent Technologies E3647A User Manual

Chapter 3 Front-Panel Operation and Features

Programming Overvoltage Protection

Programming Overvoltage Protection
Overvoltage protection guards the load against output voltages reaching values greater
than the programmed protection level. It is accomplished by shorting the output via
an internal SCR when the trip level is set to equal or greater than 3 volts, or by
programming the output to 1 volt when the trip level is set to less than 3 volts.
The following steps show how to set the OVP trip level, how to check OVP operation,
and how to clear overvoltage condition.
• Front-panel operation:

Setting the OVP Level and Enable the OVP Circuit

Power
1 Turn on the power supply.
or
1 2
2 Select the output to be programmed.
Over
Voltage 3 Enter the OVP menu and set the desired trip level.
LEVEL 22.0V (E3646A)
Use the knob and the resolution selection key
level. Note that you cannot set the trip levels to lower than 1.0 volt.
Over
4 Enable the OVP circuit.
Voltage
OVP ON
Over
Voltage 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 and annunciators turn on if the OVP circuit is enabled.
OVP1 OVP2
or to set the desired trip
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