UNI-T UDP3305S-E Performance Series Programmable Linear DC Power Supply — Education Variant
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
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
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
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.
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
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.
Warranty
This instrument is backed by UNI-T's 3+2 Year Warranty — 3 years of standard coverage, plus 2 additional years free when you register your product. That's 5 years of total protection at no extra cost.
The warranty covers manufacturing defects and component failures under normal use conditions. UNI-T instruments are built for professional daily use, and our warranty reflects that commitment to long-term reliability.
| 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 |
Data Sheets and Manuals
Software / Firmware Downloads
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