UNI-T UDP3305S Series User Manual page 18

Operation steps:
1. Press the power switch to power on the instrument.
2. Enter series mode:
Press " ", and the screen will display that CH1 and CH2 enter the series mode. The key backlight lights up, and
SER appears on the screen with a wiring diagram.
3. Connect the load:
Connect the load according to the wiring diagram on the screen. Connect the positive pole of the load to the
positive pole (red) of the CH1 output terminal, and connect the negative pole of the load to the negative pole
(black) of the CH2 output terminal.
4. Set the voltage, current, overvoltage and overcurrent protection:
Refer to chapter "Constant Voltage Output". All the channels in series connection should be operating in
constant voltage mode.
5. Turn on the output:
Press the key of CH1or CH2 to enter the series connection output mode. At this time, the CH1 and CH2
output indicators are all green (CV mode). If the indicator is red, please check whether the set current meets
the load requirements.
Power Supply Parallel Connection
High currents can be provided by connecting power supplies in parallel. In this case, the output current is the sum
of the output currents of all the channels. When the UDP3305S series power supply enters the parallel mode, users
only need to set its output voltage, output current, and the overvoltage and overcurrent protection values.
Operation steps:
1. Press the power switch to power on the instrument.
2. Enter parallel mode:
Press " ", and the screen will display that CH1 and CH2 enter the parallel mode. The key backlight lights up,
and PARA appears on the screen with a wiring diagram.
3. Connect the load:
Connect the load according to the wiring diagram on the screen. Connect the positive pole of the load to the
positive pole (red) of the CH1 output terminal, and connect the negative pole of the load to the negative pole
UDP3305S Series Programmable DC Power Supply User Manual
Parallel Connection Setting Interface