UDP3305S-E 4Ch 328W 30V/5A Programmable Linear DC Power Supply, EDU
.ut-cat{color:#333;font-family:Arial,Helvetica,sans-serif;line-height:1.5;} .ut-cat h4{color:#1a1a1a;font-size:1.15em;margin:1.5em 0 .5em;padding-bottom:.25em;border-bottom:2px sol id #ccc;} .ut-cat h2{color:#1a1a1a;font-size:1.25em;margin:1.2em 0 .4em;} .ut-cat h3{color:#222;font-size:1.05em;margin:1em 0 .3em;} .ut-cat p{margin:.6em 0;} .ut-cat ul{margin:.5em 0;padding-left:1.4em;}.ut-cat li{margin:.25em 0;} .ut-cat img{max-width:100%;height:auto;} .ut-cat table{border-collapse:collapse;width:100%;margin:.5em 0;} .ut-cat th,.ut-cat td{border:1px solid #ddd;padding:6px 10px;text-align:left;vertical-align:top;} .ut-cat td strong{color:#222;} Overview The UNI-T UDP3305S-E is the Education variant of the Performance Series UDP3000S platform — same 4-channel chassis, same 328W headline, same one-key series/parallel, same SCPI over USB / LAN / RS-232, same Web Server browser control, same OVP/OCP/OTP, same real-time waveform display as the UDP3305S — at 10 mV voltage resolution instead of 1 mV. CH1 and CH2 deliver 0–30V at up to 5A independently or in software-routed series (up to 60V) or parallel (up to 10A) without external wiring. CH3 provides a 0–6V/3A logic-level channel. CH4 supplies a fixed 5V/2A USB charging output for powering DUTs directly. For multi-station electronics teaching labs, trade-school programs, and university EE coursework where the curriculum needs proper programmable instrumentation but doesn't require ±1 mV setpoint precision, the Education variant delivers the full Performance Series feature set at deployment economics that scale to twenty stations rather than two. R&D benches that don't need 1 mV resolution but do want a real linear bench supply with full automation reach for the same hardware. Across the Design. Debug. Deploy.™ Lifecycle Across the design-debug-deploy lifecycle: Design. Four isolated linear-topology channels at low ripple set the bias and supply rails that analog and sensor designs need from first prototype. Debug. Series/parallel/tracking modes and 4-wire remote sense compensate for cable IR drop during validation. Deploy. SCPI over USB and LAN with web control drive curriculum-paced labs and production characterization without leaving the supply's front panel. Affordability meets precision — design, debug, deploy. Key Features 10 mV / 1 mA Setting Resolution — Performance Series Education Variant — Same Performance Series UDP3000S 4-channel chassis as the UDP3305S, with 10 mV voltage resolution sized for teaching labs and budget-conscious R&D benches. Step up to UDP3305S for 1 mV precision when the workflow demands it; both variants share the same automation, the same display, and the same protection. 4 Fully Isolated Channels (328W Total) — CH1 & CH2: 0–30V/5A independent; CH3: 0–6V/3A logic-level; CH4: 5V/2A USB charging output. Channel grounds are isolated — connect them where you need them, leave them floating where the test demands it. One-Key Series and Parallel — Software-routed combination of CH1 + CH2: up to 60V in series or 10A in parallel without external wiring between channel terminals. No jumper cables, no shorting bars, no risk of miswiring. Linear Topology, < 350 µVrms Ripple — Linear pass-element regulation, not a switching converter. Output ripple stays under 350 µVrms (5 Hz–1 MHz) and 2 mVpp peak-to-peak. Line and load regulation hold inside 0.01% + 2 mV. 4.3-Inch TFT with Real-Time Waveform Display — Plots voltage, current, and power waveforms across all configured channels simultaneously. Inrush, transient steps, and power-up sequences visible at the supply itself. List Output and Delayer Functions — Programmable voltage/current waveforms with built-in templates (sine, ramp, pulse). 10 list profiles + 10 delayer files + 5 preset configurations. SCPI over LAN, RS-232, USB-Host + Web Server Browser Control — Full automation reach plus driverless web-page control from any laptop on the same subnet — useful for instructor-paced lab workstations. External Trigger via Digital I/O — Hardware input/output trigger lines for cross-instrument timing coordination beyond software loops. OVP / OCP / OTP with Configurable Monitor — Per-channel protection with free-form trigger condition (V/I/P upper limits, OR logic) and selectable response (output off, beeper, both). Voltage/current limit caps for guarded operation. Keyboard lock prevents accidental reconfiguration. Detailed Features UDP3305S-E 4.3-inch TFT — voltage, current, and power readouts plus configured limits in one view Performance Series Hardware at Education-Tier Economics Same 4-channel chassis, same 328W headline, same one-key series/parallel, same SCPI + LAN + Web Server, same OVP/OCP/OTP, same waveform display as the UDP3305S — at 10 mV voltage resolution instead of 1 mV. For teaching labs, multi-station deployments, and curriculum-driven workflows where the headline measurement isn't ±1 mV but rather "the supply delivers what's set, cleanly, and supports the experiment," the Education variant puts a full Performance Series programmable linear bench supply on every station at economics multi-station departments can actually deploy. × UDP3305S-E 4.3-inch TFT — voltage, current, and power readouts plus configured limits in one view Multi-Station Lab Deployment 10 mV resolution is more than enough for the typical undergraduate electronics curriculum — diode V-I sweeps, op-amp characterization, transistor biasing, basic switching-supply lab, sensor bridge excitation. SCPI command control over LAN means a TA can pre-load list profiles and presets across an entire lab from one workstation. The keyboard lock keeps a running test-bench from being accidentally reconfigured. The 4.3" TFT shows three channels of voltage/current/power simultaneously — enough screen for two students working a station to both see the supply's state at once. UDP3305S-E — one-key series (60V) or parallel (10A) combination of CH1 + CH2 × UDP3305S-E — one-key series (60V) or parallel (10A) combination of CH1 + CH2 Real-time V/I/P waveform display across all configured channels Real-Time Voltage / Current / Power Waveform Display The 4.3-inch TFT LCD plots voltage, current, and power waveforms in real time across all configured channels — every channel, simultaneously. Inrush events, load steps, and power-up transients are visible directly on the supply's display, no oscilloscope required for routine power-behavior observation. Set/limit values for voltage, current, OVP, and OCP all appear next to live readouts so the configuration and the actual output stay on one screen. × Real-time V/I/P waveform display across all configured channels List Output and Delayer Functions The list function generates programmable voltage and current waveforms with up to 10 stored list profiles per supply. Built-in templates (sine, ramp, pulse) accelerate setup; the editor lets you define waveform points, dwell intervals, voltage/current limits, and inversion freely. The delayer function adds programmable on/off sequencing — useful for power-on/off reliability testing, sequenced rail bring-up, and stress cycling. 10 delayer files plus 5 preset configurations keep frequently used setups one keypress away. List output editor — sine/ramp/pulse templates, programmable dwell intervals × List output editor — sine/ramp/pulse templates, programmable dwell intervals External Trigger via Digital I/O The rear-panel digital I/O port supports input-trigger mode (external systems control the supply remotely — toggle outputs, advance through list steps, change channels) and output-trigger mode (the supply provides trigger pulses and status flags to drive other instruments in a coordinated test setup). Falling-edge / rising-edge triggering and selectable response (output toggle, output on, output off) cover the common automation patterns directly without an additional sequencer. Rear-panel data interfaces: USB-Host, LAN, RS-232, Digital I/O SCPI over LAN, RS-232, USB — and Web Server Browser Control SCPI command control runs over LAN, RS-232, and USB-Host. The built-in Web Server adds browser-based remote control: any laptop or workstation on the same subnet operates the front panel through a web page — no driver install, no application. For instructor-paced teaching labs, this means one laptop can preview and check every station's configuration without walking the room. For automated test integration, included PC software drops the UDP3305S-E into existing scripted environments. Digital I/O adds hardware trigger lines for tighter timing coordination than software loops alone. × Rear-panel data interfaces: USB-Host, LAN, RS-232, Digital I/O OVP / OCP / OTP with Configurable Monitor Conditions Per-channel over-voltage protection, over-current protection, and over-temperature protection guard the device under test. The Monitor function allows free configuration of the protection trigger condition (V upper limit, I upper limit, P upper limit, with logical OR combination) and the response — output off, warning beeper, or both. Voltage and current limit functions cap the adjustable range for guarded teaching-lab or operator-supervised configurations. Keyboard lock prevents accidental reconfiguration during an unattended run. Intelligent Fan Control and Channel Isolation Fan speed adjusts automatically with internal temperature, keeping noise low at light loads — useful in classroom and shared-lab environments where supply noise carries across the room. All four channels are fully isolated from each other — connect grounds where you need them, leave them floating where the test demands it. CH1+CH2 one-key series and parallel modes use software-routed combination, no external wiring required between the channel terminals. UDP3305S-E rear panel — data interfaces, AC input, fan exhaust, protected ground × UDP3305S-E rear panel — data interfaces, AC input, fan exhaust, protected ground Applications Education / Teaching Lab A real Performance Series programmable linear bench supply at education-tier deployment economics — sized for multi-station electronics teaching labs, trade-school programs, and university EE coursework where the curriculum needs proper instrumentation, not consumer-grade bench gear. The Education variant gives every station the same 4-channel chassis, the same automation, the same waveform display the senior-year R&D bench has — at 10 mV resolution sized for the curriculum. 4 channels per station (CH1 + CH2 + CH3 logic + CH4 USB output) — covers an entire experiment from one supply One-key series/parallel for higher voltage / higher current labs without external wiring confusion Keyboard lock prevents accidental reconfiguration on shared station hardware SCPI over LAN means an instructor can push presets across the entire lab from one workstation R&D Engineering For R&D workflows where 10 mV setting resolution is sufficient — embedded prototyping, breadboard validation, generic device-power for off-the-shelf modules — the Education variant of the Performance Series delivers the same UDP3000S chassis at an entry point that makes it easy to add a second supply to the bench. When the application advances to work that needs 1 mV precision, step up to UDP3305S on the same workflow. Same waveform display, same list/delayer, same protection, same SCPI as the UDP3305S CH3 0–6V/3A handles 5V/3.3V/1.8V logic rails directly Web Server browser control for remote-bench access Step up to UDP3305S when the application needs 1 mV resolution Test Lab / Consultancy Where a contract lab is running short-cycle validation work that doesn't require ±1 mV setpoint precision — production-test rigs, incoming-inspection fixtures, hobbyist-product certification — the Education variant covers the workflow with full SCPI automation at an entry-station price point. Full SCPI command set over LAN/RS-232/USB-Host 5 preset configurations recall complete 4-channel setups one keypress Digital I/O for hardware-paced sequence steps Linear topology — quieter than typical switching supplies for sensitive DUT measurement Accessories & In the Box Included UDP3305S-E Power cord (matched to country of destination) USB data cable Quick-start guide Optional Alligator-clip test leads (replacement / additional) Rack-mount kit (if applicable to deployment) Frequently Asked Questions What's the difference between the UDP3305S-E and the UDP3305S? Both are Performance Series models on the same UDP3000S 4-channel platform — same chassis, same 328W headline, same one-key series/parallel, same SCPI over LAN/RS-232/USB-Host, same Web Server browser control, same OVP/OCP/OTP, same real-time waveform display. The difference is voltage setting resolution and target use case: UDP3305S-E is the Education variant with 10 mV resolution, sized for teaching labs and budget-conscious R&D benches that don't require ±1 mV setpoint precision. The UDP3305S is the same hardware platform at 1 mV resolution for embedded prototyping, sensor characterization, and analog work where setpoint precision matters. Is this enough resolution for an undergraduate electronics curriculum? Yes. 10 mV voltage resolution and 1 mA current resolution covers diode V-I sweeps, op-amp characterization, transistor biasing, basic switching-supply lab, sensor-bridge excitation, and digital-circuit power. The 4.3-inch TFT shows three channels of voltage/current/power simultaneously — enough screen for two students at a station to both see the supply's state. Where the curriculum eventually moves into work that needs 1 mV resolution (precision analog, low-current sensor characterization), the same station can be upgraded to UDP3305S with no other workflow change. Specifications Output Topology DC Linear Output Channels 4 channels Headline Voltage 30V Headline Current 5A Total Output Power 328W Voltage Resolution 10 mV Current Resolution 1 mA Programmable Yes (SCPI command set) Touch Screen No Data Interface USB-Host, LAN, RS-232, Digital I/O Certifications CE RoHS Compliant Yes Documentation UDP3305S-E Datasheet, User Manual, and Software/Firmware Downloads Options & Accessories Included in box: Power cord English download guide multi-language safety manual calibration report (COC)
