User`s guide
4
1 8V/20A* or 25V/7A** range selection key Selects the 8V/20A or 25V/7A
range and allows the full rated output to 8V/20A or 25V/7A.
2 20V/10A* or 50V/4A** range selection key Selects the 20V/10A or
50V/4A range and allows the full rated output to 20V/10A or 50V/4A.
3 Overvoltage protection key Enables or disables the overvoltage protection
function, sets trip voltage level, and clears the overvoltage condition.
4 Overcurrent protection key Enables or disables the overcurrent protection
function, sets trip current level, and clears the overcurrent condition.
5 Display limit key Shows voltage and current limit values on the display and
allows knob adjustment for setting limit values.
6 Recall operating state key Recalls a previously stored operating state from
location ‘‘1’’, ‘‘2’’, or ‘‘3’’.
7 Store operating state / Local key
1
Stores an operating state in location ‘‘1’’,
‘‘2’’, or ‘‘3’’ / or returns the power supply to local mode from remote interface
mode.
8 Error / Calibrate key
2
Displays error codes generated during operation, self-
test and calibration / or enables calibration mode (the power supply must be
unsecured before performing calibration). See Service Guide for more details
on calibration.
9 I/O Configuration / Secure key
3
Configures the power supply for remote
interfaces / or secure or unsecure the power supply for calibration. See
Service Guide for more details on how to secure or unsecure the power supply.
10 Output On/Off key Enables or disables the power supply output. This key
toggles between on and off.
11 Control knob Increases or decreases the value of the blinking digit by turning
clockwise or counter clockwise.
12 Resolution selection keys Move the blinking digit to the right or left.
13 Voltage/current adjust selection key Selects the knob control function for
voltage or current adjustment.
1
The key can be used as the ‘‘Local’’ key when the power supply is in the remote
interface mode.
2
You can enable the ‘‘calibration mode’’ by holding down this key when you turn on
the power supply.
3
You can use it as the ‘‘Secure’’ or ‘‘Unsecure’’ key when the power supply is in the
calibration mode.
*For Agilent E3633A Model **For Agilent E3634A Model