UDP4303S 4-Channel 297W Precision Programmable Linear DC Power Supply
Brand
UNI-T
|
Model
UDP4303S
|
🇨🇳 China
A four-channel fully isolated 297W linear supply with dual 32V/3A, 15V/3A, and 6V/10A outputs, 1μA low-current resolution, 8kSa/s waveform sampling, and 1ms List control.
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Description
The UDP4303S is a four-channel, fully isolated 297W precision programmable linear DC power supply with sub-350μVrms noise for multi-rail analog, sensor, IoT, and embedded systems. Every channel supports remote sense and 1μA low-current measurement, while 8kSa/s waveform display, 1ms/512-group List output, one-touch CH1+CH2 series/parallel operation, controllable bleeder, and OVP/OCP/OTP are joined by USB, LAN, RS-232, Digital I/O, web, and SCPI control.
Specifications
- Supply typeProgrammable linear DC power supply
- Output channels4, fully isolated
- Total output power297W
- CH1/CH2 rated output0–32V/0–3A each
- CH3 rated output0–15V/0–3A
- CH4 rated output0–6V/0–10A
- Voltage load/line regulation<0.01% + 2mV
- Current Load Regulation Rate<0.01% + 250μA
- Ripple and noiseVoltage <350μVrms/2mVpp; current <2mArms (20Hz–20MHz)
- Transient response<50μs to ±15mV settling
- Programming resolutionVoltage 1mV; current 0.1mA
- Readback resolutionVoltage 1mV; current 0.1mA; low-current mode 1μA
- Programming accuracyCH1–3: voltage ±(0.03%+8mV), current ±(0.15%+5mA); CH4: voltage ±(0.04%+4mV), current ±(0.15%+10mA)
- Readback accuracyCH1–3: voltage ±(0.03%+8mV), current ±(0.15%+5mA); CH4: voltage ±(0.08%+3mV), current ±(0.15%+10mA)
- Low-current measurement accuracy0.25% + 28μA under constant conditions
- Sampling Rate8kSa/s on all four channels
- List time resolution1ms, up to 512 groups
- Series/parallel outputCH1+CH2: up to 64V series or 6A parallel
- Display4.3-inch TFT LCD, WVGA 480×272
- InterfaceUSB Device, USB Host, LAN, RS-232, 4-line Digital I/O, and remote sense on all channels
Features
- Four fully isolated channelsCH1/2, CH3, CH4, and communications are isolated to reduce crosstalk and ground loops
- Ultra-low-ripple linear output<350μVrms/2mVpp for precision analog and low-noise measurements
- 1μA low-current modeMeasures sleep current, leakage, and IoT standby consumption on every channel
- 8kSa/s waveform displayDisplays voltage, current, and power behavior for all four channels in real time
- 1ms List outputUp to 512 groups with sine, ramp, triangle, pulse, and other templates
- One-touch series/parallel/trackingCH1+CH2 provides 64V series, 6A parallel, or synchronized tracking
- Controllable bleederRapidly discharges disabled outputs or can be disabled for battery testing
- Configurable OCP0–10s delay with <3ms fastest response, plus OVP, OTP, and sense protection
- Remote sense on all channelsFour-wire lead-drop compensation with sense-terminal protection
- Automation and web controlSCPI over USB/LAN/RS-232, built-in web server, and Digital I/O trigger
Attributes
- Dimensions (W×H×D)225 × 159.6 × 445 mm
- Weight (source difference)Visible US specification: 10.5 kg; US JSON-LD: 12.2 kg; store shipping weight: 13.5 kg
- AC input100V/120V/220V/230V ±10%, 50/60Hz; rear-panel selector must match
- Operating Temperature0–40°C
- Command processing time<10ms
- Local storageAt least 10 status, 10 List, 10 Delayer, and 5 quick presets; USB export
- AccessoriesUS page: regional power cord, 1.5m USB A-to-B cable, Digital I/O plug, factory calibration certificate, and English manual; FAQ also lists one 5-pin and two 8-pin plugs
- CertificationCE and cTUVus; US page also marks RoHS
- Warranty (regional difference)US page: 3+2 years; actual coverage follows TECPEL quotation/sales terms
- Software/firmwareInstrument Application, UNI-T SDK, and UDP4303S Firmware V1.15 (2025-07)
- Official documentsData sheet, quick-start guide, English/German user manuals, and programming manual
- Technical-source noteModel values follow official UNI-T global and US pages; weight differences remain separately labelled
