GW Instek GPS-x303 Series - Manual (Page 10)

MULTI-OUTPUT POWER SUPPLY
USER MANUAL
14
5-4. Operation Mode
(1) Independent Operation
The “CH1” and “CH2” supplies each provide a 0 to rating volts output at up
to rating amps. This procedure covers the use of the CH1 and CH2 supplies
only when they are used independently from each other. When used in the
independent operating mode, the operation controls of the two power supplies
are completely independent and either supply can be used individually or
both can be used simultaneously.
A. Disengage both Tracking mode switches (both switches out) so that the
power supply is in the independent operating mode.
B. Adjust “Voltage” control and “Current” control to the desired output
voltage and current.
C. Turn off the power supply and the equipment to be powered during
hook-up.
D. Connect the positive polarity of the device being powered to the red (+)
terminal of the power supply.
E. Connect the negative polarity of the device being powered to the black (-)
terminal of the power supply.
F. Fig.5-2 illustrates the connection procedure.
Power
Supply
Fig. 5-2 Independent Operation
MULTI-OUTPUT POWER SUPPLY
USER MANUAL
15
(2) Series Tracking Operation
When the series tracking mode of operation is selected, the position (Red)
terminal of the CH2 supply output is internally connected to the negative
(black) terminal of the CH1 supply.
In the series tracking mode, the maximum output voltage of both CH1 and
CH2 supplies can be simultaneously varied with one control. The maximum
CH2 supply voltage is automatically set to the same as the CH1 supply by
using the CH1 VOLTAGE controls.
A. Set the power supplies to the Tracking series mode by engaging the left
Tracking switch and release the right Tracking switch.
WARNING. Voltage more than 60V DC has a lethal shock hazard
to the user. Be careful when connecting power supplies in series to
achieve voltages higher than 60V DC total or 60V DC between any
connection and earth ground.
Note :
Simultaneously metering of both current and voltage can be obtained in the
mode of operation setting one of the displays for current metering and one
for voltage metering. In this case, the output voltage (across the two supplies)
is actually double the displayed value. For example, if the CH1 display is set
for voltage metering and the CH2 display for current metering, the output
voltage across the CH1 positive (red) terminal and the CH2 negative (black)
terminal would be double the reading on the CH1 LED Display (since both
supplies are putting out the same voltage). The actual output current would
be the value read from the CH2 LED Display (since the two supplies are
wired in series, current flowing through each supply must be equal).
B. Set the CH2 CURRENT control to the full clockwise position. The
maximum current is set by using the CH1 CURREN control. Follow the
instructions for “Setting current Limit” (select “CH1” or “CH2” supply
independently by using the CH1 CURRENT control).
Note:
Because the supplies are being used in series, either CURRENT control can
be used to set maximum current. If desired, the CH1 CURRENT control can
be rotated fully clockwise and the CH2 CURRENT control can be used to