UNI-T UDP3305S-U Series User Manual
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UNI-T UDP3305S-U Series User Manual

UNI-T UDP3305S-U Series User Manual

Programmable dc power supply
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User Manual
UDP3305S-U Programmable DC Power Supply
REV 1.1
October 2024

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Summary of Contents for UNI-T UDP3305S-U Series

  • Page 1 User Manual UDP3305S-U Programmable DC Power Supply REV 1.1 October 2024...

  • Page 2: Copyright Information

    UNI-T or an authorized UNl-T distributor. Power cords, accessories and fuses, etc. are not included in this warranty. If the product is proved to be defective within the warranty period, UNI-T reserves the rights to either repair the defective product without charging of parts and labor, or exchange the defected product to a working equivalent product (determined by UNI-T).

  • Page 3: Safety Information

    If the products is shipped domestically to the purchase receipt of the original purchaser. If the product is shipped to the location of the UNI-T service center, UNI-T shall pay the return shipping fee. If the product is sent to any other location, the customer shall be responsible for all shipping, duties, taxes, and any other expenses.
  • Page 4 User Manual UDP3305S-U Series Programmable DC Power Supply grounded before use. Operating voltage Please ensure that the main supply does not exceed 10% of rated operating range to prevent product damage. Input voltage Please notice the product symbols before connecting. The instrument supports 2 kinds of AC input method: 110V and 220V.

  • Page 5: Product Overview

    User Manual UDP3305S-U Series Programmable DC Power Supply Product Overview This chapter includes: Product (Features and Specifications) Front Panel Rear Panel Product UDP3305S-U output ranges are shown in the table below: Model Maximum output voltage Maximum output current CH1: 33V CH1: 5.2A...
  • Page 6 User Manual UDP3305S-U Series Programmable DC Power Supply 1.1.2 Specifications Technical indexes Models UDP3305S-U CH1&CH2：0～32V×2 Voltage CH3：0～6V CH4：5V（USB output） Output rating CH1&CH2：0～5A×2 Current CH3：0～3A×1 CH4：2A（USB output） Power 348W Power supply regulation: ≤0.01%+2mV Regulation Load regulation: ≤0.01%+2mV Ripple and ＜350μVrms/2mVpp(5Hz~1MHz) noise...
  • Page 7 User Manual UDP3305S-U Series Programmable DC Power Supply Voltage: 10mV Programming resolution Current: 1mA Voltage: 10mV Read back resolution Current: 1mA Programming Voltage: ±（0.3%+20mV） accuracy （25±5℃） Current: ±（0.2%+5mA） Read back Voltage: ±（0.1%+20mV） accuracy （25±5℃） Current: ±（0.15%+5mA） Rise: full load＜50ms; no-load＜30ms Fall: full load＜45ms;...

  • Page 8: Front Panel

    User Manual UDP3305S-U Series Programmable DC Power Supply Front Panel 1.2.1 Keys Function WAVE Enable the waveform display function Enable or disable the series connection function PARA Enable or disable the parallel connection function LIST/DELAYER Enable and switch between list mode or delayer Instruments.uni-trend.com...
  • Page 9 User Manual UDP3305S-U Series Programmable DC Power Supply STORAGE Internal and external storage and recall Numeric keys Input the number or decimal point Exit the current interface and return to the previous interface Select channel 1 Select channel 2 Select channel 3 and switch between 1.8V, 2.5V, 3.3V, 5V...

  • Page 10: Inspection And Installation

    User Manual UDP3305S-U Series Programmable DC Power Supply 2 . Inspection and Installation This chapter includes: Packing List Requirements for Power Supply Operating Environment Cleaning 2.1 Packing List Before using the instrument: 1. Check whether the appearance of the product is damaged, scratched or has other defects;...

  • Page 11: Operating Environment

    User Manual UDP3305S-U Series Programmable DC Power Supply power interface, take out the old fuse and replace it with a new one, and install the fuse slot back after completion. Warning: Please do not use the damaged power cord. Operating Environment UDP3305S-U can only be used in normal temperature and low condensing zone.

  • Page 12: Output Terminals

    User Manual UDP3305S-U Series Programmable DC Power Supply Press the power switch to power on the instrument. Output Terminals 1. Each channel can be used as an independent channel. 2. When CH1 and CH2 are connected in series or in parallel, pay attention to the wiring method.

  • Page 13: Front Panel Operations

    User Manual UDP3305S-U Series Programmable DC Power Supply 4 Front Panel Operations This chapter includes: Constant Voltage Output Constant Current Output Power Supply Series and Parallel Connections List Mode and Delayer Advanced Functions Display Setting Store and Recall System Settings...

  • Page 14: Constant Current Output

    User Manual UDP3305S-U Series Programmable DC Power Supply Caution Pay attention to the polarity when connecting them to avoid damaging the instrument and the devices connected to the instrument. 5. Set the voltage and current: Method 1 Press the "Voltage" or "Current" key, and the cursor will be displayed at the end of the voltage or current setting value.

  • Page 15: Power Supply Series And Parallel Connections

    User Manual UDP3305S-U Series Programmable DC Power Supply 6. Set overvoltage and overcurrent protection: It is the same as setting overvoltage and overcurrent protection in constant voltage mode. 7. Turn on the output: Turn on the output of the corresponding channel and the actual output voltage, output current, output power as well as the output mode (CC) are high-lighted in the user interface.
  • Page 16 User Manual UDP3305S-U Series Programmable DC Power Supply Power Supply Series Connection Higher voltages can be provided by connecting power supplies in series. In this case, the output voltage is the sum of the output voltages of all the channels. When the UDP3305S-U power supply enters the series mode, users only need to set its output voltage, output current, and the overvoltage and overcurrent protection values.
  • Page 17 User Manual UDP3305S-U Series Programmable DC Power Supply Parallel Connection Setting Interface 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.
  • Page 18 User Manual UDP3305S-U Series Programmable DC Power Supply Operation steps: 1. Press the power switch to power on the instrument. 2. Enter the timer/delayer mode: Press to step through the list mode and delayer setting interface. Note: For the same channel, the timer function and delayer function are mutually exclusive. When the timer is enabled, delayer is disabled.
  • Page 19 User Manual UDP3305S-U Series Programmable DC Power Supply 1. Press “Type” to select the desired template; 2. Press “Edit object” to select "Voltage" or "Current"; 3. Define waveform start group values and total points; 4. Press “More” to set the waveform parameters such as the voltage, maximum and minimum current, high and low levels, pulse width, period and inversion;...
  • Page 20 User Manual UDP3305S-U Series Programmable DC Power Supply 1. Press “Type” to select the desired template; 2. Press “Start group” to edit the start group number; 3. Press "Total points" to set the number of points required for this delay (maximum 2048 points);...
  • Page 21 User Manual UDP3305S-U Series Programmable DC Power Supply level time equals the period T minus the pulse width t (T-t). The high and low level values determine the maximum and minimum amplitudes of the pulse. Pulse waveform 3. Ramp The Ramp waveform is as shown in the figure below.
  • Page 22 User Manual UDP3305S-U Series Programmable DC Power Supply 6. Stair Up Down The Stair Up Down waveform is as shown in the figure below. The instrument determines the amplitude of the Ramp according to the maximum and minimum currently set.
  • Page 23 User Manual UDP3305S-U Series Programmable DC Power Supply 4.6 Delayer Templates The optional delayer templates include: state generation, fix time, increase, and decline. 1. State Generation The state generation mode is a template that controls the On/Off state of the output terminal. "0" means off and "1"...
  • Page 24 User Manual UDP3305S-U Series Programmable DC Power Supply After entering the list mode function, press “storage” to save/read. List mode storage interface (the file suffix is LIST) After entering the delayer function, press “storage” to save/read. Delayer storage interface (the file suffix is DLY) Save and name files by using the knob.

  • Page 25: Waveform Display

    User Manual UDP3305S-U Series Programmable DC Power Supply File read interface Waveform Display UDP3305S-U power supply has waveform display function, which can display the output voltage, current and power of each channel on the screen. When each channel operates independently, voltage, current and power waveforms of three channels can be displayed on the screen at the same time.
  • Page 26 User Manual UDP3305S-U Series Programmable DC Power Supply 4.10 Preset UDP3305S-U power supply provides 5 sets of output presets that can be freely edited and stored. Users can set the voltage, current, limit voltage and limit current parameters of each channel and series and parallel channel in advance, and load the parameters when using, so as to avoid the step of resetting parameters every time when turning on the instrument.
  • Page 27 User Manual UDP3305S-U Series Programmable DC Power Supply channel will stop monitoring, and only the CH3 channel can be monitored synchronously. Operation steps: 1. Press the power switch to power on the instrument. 2. Enter the monitor interface: Press , select “Monitor”, and then press the “Enter” key or the knob to enter the monitor setting interface.
  • Page 28 User Manual UDP3305S-U Series Programmable DC Power Supply Trigger input Trigger output Operation steps: 1. Connect the digital I/O interface on the rear panel to the external trigger source. 2. Press the power switch to power on the instrument. 3. Enter the trigger interface: Press , select “Trigger”, and then press the “Enter”...

  • Page 29: System Settings

    User Manual UDP3305S-U Series Programmable DC Power Supply 4.13 System Settings In the system settings interface, users can view and modify system parameters, such as the IP address, baud rate of RS232 interface, current system software version, and screen brightness.

  • Page 30: Limited Warranty And Liability

    UNI-TREND TECHNOLOGY (CHINA) CO., Ltd. UNI-T products are protected under patent laws in China and internationally, covering both granted and pending patents. Licensed software products are the properties of UNI-Trend and its subsidiaries or suppliers, all rights reserved. This manual contains information that replaces all earlier published versions.

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