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Product Description


Uni-Trend Technology Inc.
UNI-T manufactures innovative, reliable, safe to use, and user friendly T&M products. With products meeting industry standards, UNI-T is able to fully satisfy product demands from around the world.


UDP3305S 4-Channel Programmable Linear DC Power Supply

DC Power Supply Panel
- LCD Display
- Function Key
- Digital Keyboard
- Rotary Encoder
- Shift, Preset & Home Keys
- Channel Selection & Output Control
- Output Channel & Indicator
- Input Source Selection
Key Features of the UDP3305S Programmable Liner DC Power Supply
Maximum power up to 373W
Multiple protection: OCP/OVP/OTP
Excellent load regulation & line regulation
Ultra low output ripple & noise
Support one key serial & parallel output function
4.3-in. TFT screen displays 3 channels & multiple parameters at the same time
List/delayer function to control voltage & current output as required
External trigger function to realize industrial automation control
Provide USB host, USB device, LAN, RS232, digital IO & interfaces
Support SCPI remote command control
- With waveform display function, real-time and dynamic display of output voltage/ current/ power waveform
- Intelligent speed control of fan can effectively reduce fan noise during operation
- Support 10 groups of file storage & transfer out, and support USB flash disk reading & writing
- High precision display of 5-digit voltage/ 4-digit current, with resolutions of 10mV/1mA and 1mV/1mA
- Keyboard lock function to prevent misoperation
Technical Specification
Channel | 4 |
Voltage Rating | CH1&CH2: 0~30V, CH3: 0~6V, CH4: 5V (USB Output) |
Current Rating | CH1&CH2: 0~5A, CH3: 0~3A, CH4: 2A (USB Output) |
Power Rating | 328W |
Max V / A DC | 30V/5A |
Max V / A Resolution | 1mV/1mA |
Programmable | True |
Display Screen | 4.3 Inch |
Accuracy | <0.3%+20mV/<0.2%+5mA |
Interfaces | USB/RS232/LAN, Digital I/O |
UDP3305S Function Information
LCD Interactive Interface
Using a 4.3-inch high-definition display screen, it provides users with a man-machine interface with rich functions and simple operation, which can display the current set output voltage/current, actual output voltage/current and protection output voltage/current value of the power supply in real time. The functional interface is simple and comprehensive, easy to operate.
One-key Setting for Series & Parallel
The series-parallel connection between CH1 and CH2 of the main channel can be realized without external connection, which simplifies the connection and makes the test easier.
List / Delayer Function
With list and delay setting functions, it can set up to 2048 sets of data according to test requirements, and the number of cycles can reach 99999. It is used with waveform templates, which is very convenient for cycle testing and aging testing.
Protection Function
The UNI-T UDP3305S has OVP / OCP / OTP function to provide protection for power supply. It is equipped with current and voltage limit functions. It is equipped with monitor function, which can freely set protection conditions and give alarms.
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