Chapter 2 Quick Start
To Use the Power Supply in Constant Voltage Mode
28
To Use the Power Supply in Constant Voltage Mode
To set up the power supply for constant voltage (CV) operation, proceed as
follows.
For each step, use the keys shown on the left margin.
1 Connect a load to the desired output terminals.
With power-off, connect a load to the desired output terminals.
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); the 8V/20A* or 25 V/7 A** range is selected (the
8V
* or
25V
** annunciator turns on); and the knob is selected for
voltage
control.
Press * or ** key to operate the power supply in the 20V/10A* or
50V/4A** range before proceeding to the next step. The
20V
* or
50V
**
annunciator turns on.
3 Set the display to the limit mode.
No t i c e that the
Limit
annunciator flashes, indicating that the display is in the
li mit mod e. Wh en t he d isp lay is in th e
lim it
mode, you can see the volt age and
current limit values of the power supply.
4 Adjust the knob for the desired current limit.
Check that the
Limit
annunciator still flashes. Set the knob for
current
control.
The second digit of the ammeter will be flashing. The flashing digit can be
changed using the resolution selection keys and the flashing digit can be
adjusted by turning the knob. Adjust the knob to the desired current limit.
1
You can use the resolution selection keys to move the flashing digit to the
right or left w hen settin g curr ent.
In
constant voltage
m ode, the voltage valu es betwee n the m ete r and
limit modes are the same, but the current values are not. Moreover , if t he
display is in the meter mode, you cannot see the change of current limit
value when adjusting the knob. We recommend that you should set the
displ ay to “lim it” m ode to see the chan ge of curr en t lim it valu e in the
constant voltage mode whenever adjusting the knob.
Power
20V,10A 50V,4A
Display
Limit
Voltage
Current
1
*For Agilent E3633A Model **For Agilent E3634A Model
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