The UDP1306C is a single-channel programmable linear DC power supply delivering 0–32 V at 0–6 A — 192 W of clean DC from a value-tier instrument.

The 32 V ceiling and 6 A current capability cover most service-shop and bench needs (powering boards under repair, driving solenoids and small motors, sourcing test current for relay coils, validating regulated subsystems against their input rails), and the linear topology keeps output ripple under 2 mVrms.

An auxiliary fixed 5 V / 2 A output handles logic-side power on a board under test while the main channel sources the load — useful when characterizing a regulated subsystem against its input rail. SCPI over USB-Device or RS-232 lets the UDP1306C join an automated test setup at the same control reach as the higher-tier UDP3000C three-channel platform; five preset storage groups, shutdown memory, and a Digital I/O hardware ON/OFF pin pair round out the workflow set.

For industrial maintenance, equipment service, single-rail bench work, teaching labs, and DIY/hobbyist electronics where one programmable rail at 6 A is the right answer, the UDP1306C is the value-tier point in UNI-T's linear PSU lineup.

Across the Design. Debug. Deploy.™ Lifecycle

The UDP1306C fits the workflow we call Design. Debug. Deploy. — the three-act cycle most engineering teams actually run a power supply through.

In Design, five preset storage groups and shutdown memory let a planned voltage profile execute repeatably while the rest of the bench attends to capture and analysis.

In Debug, OVP/OCP/OTP protections, the auxiliary 5 V / 2 A logic-side rail, and three-window 4-digit V/I readout make it safe to push a marginal load and see exactly what's happening at the terminals.

In Deploy, SCPI over USB-Device or RS-232 means the same supply that ran on the design bench can drop into a production rack or service station and be controlled by the same scripts. One instrument, three phases, no relearning.

• 0–32 V / 0–6 A single-channel main output — 192 W rated. The 32 V ceiling covers automotive and industrial 24 V rails with margin; the 6 A capability handles most single-rail bench work.
• Auxiliary fixed 5 V / 2 A output — independent rail with its own short-circuit and over-voltage protection. Powers logic-side circuits while the main channel drives the load under test.
• Linear topology, ≤2 mVrms ripple — pass-element regulation. Load regulation ≤0.01% + 3 mV in CV mode. Clean for low-noise analog work.
• SCPI programmable — USB-Device + RS-232 with full SCPI command set, same control reach as the higher-tier UDP3000C platform.
• 10 mV / 1 mA setting resolution — three-window 4-digit V/I display (set value / output value / selectable third readout).
• OVP / OCP / OTP protection — configurable thresholds plus over-temperature shutdown. Auxiliary 5 V / 2 A rail has independent short-circuit and over-voltage protection.
• Five preset storage groups — save and recall full instrument states for fast bench setup. Shutdown memory restores last settings on power-up.
• Hardware output ON/OFF via Digital I/O — back-panel pin pair for external interlock circuits, panic buttons, or test-fixture safety integration.
• Front-panel 5 V / 2 A USB-A charging port — independent USB-A receptacle for charging a phone or powering a USB device. Charging only — the SCPI data interfaces are USB-Device and RS-232 on the back panel.
• Keypad lock + output setting viewable — lock the front-panel keys to preserve a known-good test condition; view stored setpoints without disturbing the live output.
• Intelligent cooling fan — load- and temperature-controlled; quiet at light load.

Single-Channel Linear at the Value Tier

Linear pass-element regulation, single adjustable channel, 0–32 V at 0–6 A, 192 W — built for general-purpose bench work, industrial maintenance, equipment service, teaching labs, and DIY/hobbyist electronics. 6 A on a single rail covers most service-shop power needs (powering boards under repair, driving solenoids and small motors, sourcing test current for relay coils), and the linear topology keeps output ripple under 2 mVrms — clean for low-noise analog work that doesn't need the higher-tier UDP3000C platform.

Three-window 4-digit voltage and current display (set value, output value, and a selectable third readout) keeps the instrument legible across the bench. 10 mV / 1 mA setting resolution. Constant-voltage and constant-current modes with automatic crossover. Load regulation ≤0.01% + 3 mV in CV; ≤0.1% + 10 mA in CC.

SCPI Control Over USB-Device or RS-232

The UDP1306C carries the same SCPI command interface as the UDP3000C platform: back-panel USB-Device and RS-232 ports, with a Digital I/O pin pair for hardware ON/OFF remote control. For test-fixture integration on a service bench, automated burn-in stations, and small-batch production test, SCPI gives the same automation reach as higher-tier UDP3000C-platform supplies.

Voltage and current setpoint, OVP/OCP threshold, output enable, memory recall, and readback are all accessible from a host script. Five preset storage groups keep frequently used configurations available for fast recall under SCPI. The Digital I/O ON/OFF pin pair enables external interlocks and safety circuits without needing software intervention.

Auxiliary 5 V / 2 A Output and Front-Panel USB Charging

The UDP1306C carries two fixed-voltage 5 V / 2 A outputs in addition to the main adjustable channel — and they're not the same rail.

The auxiliary 5 V / 2 A output is a screw-terminal rail on the back panel for wiring into the DUT. It has its own short-circuit and over-voltage protection on the rail itself, so a fault on the logic side won't take down the main bench supply. Use it to power logic-side circuits on a board under test while the main 0–32 V channel sources the regulated rail you're tuning.

The front-panel 5 V / 2 A USB-A charging port is a USB-A receptacle for charging a phone, powering a USB-powered device, or running a USB lamp on the bench. Charging only — no data lines. The SCPI data interfaces are USB-Device and RS-232 on the back panel, distinct from this charging port.

OVP / OCP / OTP Protection

Three independent protections cover the most common ways a load fails: a short or low-impedance fault drives current up (OCP), a misconfigured DUT pulls voltage out of spec (OVP), or a sustained over-load heats the supply itself (OTP). All three trip the output off and display a fault state on the front panel.

OVP and OCP thresholds are user-configurable via the front-panel keys. OTP is internal and not user-configurable. The auxiliary 5 V / 2 A rail has independent short-circuit and over-voltage protection on the rail itself, separate from the main channel's OVP/OCP — meaning a logic-side fault on the auxiliary rail does not affect the main channel and vice versa.

Five Preset Storage Groups and Hardware ON/OFF

Five preset storage groups save and recall the full instrument state — voltage setpoint, current setpoint, OVP and OCP thresholds, output enable. Recall is a single front-panel keypress; the SCPI command set exposes the same recall under remote control. Shutdown memory restores the last operating state on power-up: a clean line-cycle interruption resumes operation at the prior settings, useful when a bench needs to come back online without manual reconfiguration.

Hardware ON/OFF via Digital I/O. The back-panel Digital I/O pin pair enables external control of the output state — TTL-level input toggles the main channel on or off without needing software involvement. Useful for external interlocks (panic-button kills the output before software can react), test-fixture safety integration (DUT cover open ⇒ output off), and any scenario where output state needs to follow a hardware signal.

Applications

Industrial Maintenance and Equipment Service

Single-channel 0–32 V / 6 A covers most service-shop power needs: powering boards under repair, driving solenoids and small motors, sourcing test current for relay coils, validating regulated subsystems. The 32 V ceiling and 6 A current capability handle 24 V-rail equipment with headroom; SCPI integrates the supply into existing test fixtures and burn-in stations. The auxiliary 5 V / 2 A output handles logic-side power on a board under repair while the main channel sources the rail being tested.

DIY Electronics and Hobbyist Workshops

Programmable linear supply at the price point hobbyist budgets allow. The auxiliary 5 V / 2 A output handles logic-side power on the board you're building while the main channel sources the rail you're tuning. The 32 V ceiling covers higher-voltage prototypes that 30 V supplies clip against. Front-panel USB charging port powers a logic analyzer, multimeter, or any USB-powered bench accessory without needing a separate wall-wart.

Teaching Labs and Trade Schools

Single-channel programmable supply at a per-station cost that lets a teaching lab equip a 20-bench classroom inside budget. Five preset storage groups let a single instrument support multiple lab exercises without manual reconfiguration each session.

Small-Batch Production Test

Programmable single-rail supply at a price point that allows deploying multiple instances on a small-batch production line. SCPI over USB-Device or RS-232 scripts the test sequence; the auxiliary 5 V / 2 A output handles logic-side power on the unit under test while the main rail drives the load. Hardware Digital I/O ON/OFF supports panic-button and interlock integration on test fixtures.

Specifications

Options & Accessories

Every UDP1306C ships with the instrument, a region-specific power cord, a USB communication cable, output cables, an English user manual and a factory calibration certificate.

• UDP1306C instrument
• Power cord (region-specific)
• USB communication cable
• Output cables
• English user manual
• Factory calibration certificate

FAQ's

UDP1306C vs UDP6700 / UDP6900B — linear vs switching, when to choose which?

The UDP1306C is linear; the UDP6700 and UDP6900B series are switching. The choice is mostly about ripple and noise floor versus efficiency and current-rating-per-dollar.

• Choose linear (UDP1306C) when low ripple and clean noise floor matter more than power density — analog circuit work, audio, low-noise sensor characterization, anything where ≤2 mVrms output ripple is worth the trade-off in size and weight.
• Choose switching (UDP6700) when you need higher rated power per chassis dollar and the load is digital or insensitive to switching noise — industrial maintenance with mid-current loads, automotive subsystem testing, motor-drive bench work. UDP6700 also offers wide-range power-ratio-3.0 envelopes that linear topologies cannot match.
• Choose UDP6900B when the bench needs LAN with web control, USB-Host, RS-485 with Modbus, slope mode, auto-range, multi-machine daisy-chain, and a built-in DVM in addition to high-current switching output.

What's the difference between the UDP1306C and the UDP3303C?

Channel count and form factor. The UDP1306C is a single-channel value-tier instrument (1 main adjustable + 1 fixed 5 V / 2 A auxiliary). The UDP3303C is a three-channel UDP3000C-platform supply (CH1 + CH2 adjustable + CH3 logic-rail selector). Choose UDP1306C if you need one programmable rail at this price point; choose UDP3303C if you need the multi-channel CH3 logic-rail flexibility on the higher-tier platform.

Does the UDP1306C have LAN?

No. The UDP1306C's data interfaces are USB-Device and RS-232 only. The Digital I/O pin pair on the back panel handles hardware ON/OFF — useful for external interlocks but not for data communication. For LAN with LXI/web interface, the UDP3000S series adds it on the higher-tier multi-channel linear platform.

What is the auxiliary 5 V / 2 A output for, and how is it different from the front-panel USB charging port?

The auxiliary 5 V / 2 A output is a fixed-voltage rail on screw terminals at the back panel — for wiring into the DUT to power logic-side circuits while the main 0–32 V / 6 A channel sources the rail you're tuning. The auxiliary rail has its own short-circuit and over-voltage protection on the rail itself, so a fault on the logic side won't take down the main bench supply. The front-panel 5 V / 2 A USB-A port is a separate, independent receptacle for charging a phone or powering a USB device — charging only, no data lines. They are two different physical outputs at the same nominal voltage.

Can the UDP1306C run automated voltage sweeps?

Yes — SCPI control over USB-Device or RS-232 supports remote voltage and current setpoint commands plus readbacks. Five preset storage groups keep frequently used configurations available for fast recall. For complex programmable waveform output (list mode and trigger delayer), the UDP3000S series and the switching UDP6700/UDP6900B series add those capabilities.

Why is the rated output power 192 W if 32 V × 6 A = 192 W?

192 W is the rated output power, which equals the maximum simultaneous voltage × current product the supply can deliver continuously on the main channel. The 32 V ceiling and 6 A ceiling are the individual maxima; the supply can deliver any voltage/current combination inside the 192 W envelope, including 32 V at lower currents or 6 A at lower voltages. The auxiliary 5 V / 2 A rail (10 W) is independent of the main channel's 192 W budget; the front-panel USB charging port (also 5 V / 2 A, 10 W) is a third independent output and likewise does not draw from the main channel's budget.