Constant Current Operation - Agilent Technologies E3633A User Manual

Chapter 3 Front-Panel Operation

Constant Current Operation

Constant Current Operation

To set up the power supply for constant current (CC) operation, proceed as follows.
• Front-panel operation:
1 Connect a load to the output terminals.
With power-off, connect a load to the (+) and (-) output terminals.
Power
2 Turn on the power supply.
The power supply will go into the power-on / reset state; the output is disabled (the
OFF
** annunciator turns on); and the knob is selected for voltage control.
25V
To operate the power supply in the 20V/10A* or 50V/4A** range, press
50V,4A
on.
Display
3 Set the display to the limit mode.
Limit
Notice that the
mode. When the display is in the limit mode, you can see the voltage and current limit
values of the selected supply.
In constant current mode, the current values between the meter mode and limit
mode are the same, but the voltage values are not. Moreover, if the display is in
the meter mode, you cannot see the change of voltage limit value when adjusting
the knob. We recommend that you should set the display to "limit" mode to see
the change of voltage limit value in the constant current mode whenever adjusting
the knob.
1
4 Adjust the knob for the desired voltage limit.
Check that the
to indicate the knob is selected for voltage control. The blinking digit can be changed
using the resolution keys and the blinking digit can be adjusted by turning the knob.
Adjust the knob for the desired voltage limit.
1
You can use the resolution selection keys to move the blinking digit to the right or
left when setting the voltage.
*For HP E3633A Model
26
annunciator turns on); the 8V/20A* or 25V/7A** range is selected (the
** key before proceeding to the next step. The
annunciator blinks, indicating that the display is in the limit
Limit
annunciator still blinks and the second digit of voltmeter blinks
Limit
**For HP E3634A Model
8V
20V,10A
* or ** annunciator turns
20V 50V
* or
* or