UNI-T UDP3305S-E 4-Channel Programmable Linear

DC Power Supply 0-30V 0-5A with List Mode &

SCPI Control

Multi-Channel Programmable Linear DC Power Supply for Precision Testing and Automated Applications

The UNI-T UDP3305S-E is a multi-channel programmable linear DC power supply designed for electronics development, laboratory testing, production inspection, and automated test applications. Featuring two adjustable main channels (0–30V, 0–5A each), an auxiliary 0–6V / 0–3A channel, and a fixed 5V / 2A USB output, it provides flexible power configurations for different electronic devices and testing requirements.

With programmable list mode supporting up to 2,048 parameter steps and 99,999 cycles, the UDP3305S-E can generate automatic output sequences using built-in waveform templates, including sine, square, staircase, and ramp patterns. This helps reduce repetitive manual adjustments during product testing, aging tests, and reliability evaluations.

The instrument also provides USB, LAN, RS232, and Digital I/O interfaces, together with SCPI command support for remote operation and automated test system integration. Combined with low-ripple linear output, voltage and current tracking, and series/parallel operation, the UDP3305S-E is a versatile bench power solution for engineers, research laboratories, and electronics manufacturers.

Key Features

Four Output Channels for Flexible Bench Testing

The UDP3305S-E provides multiple output options for powering different electronic circuits and devices:

• CH1: 0–30V / 0–5A

• CH2: 0–30V / 0–5A

• CH3: 0–6V / 0–3A

• CH4: Fixed 5V / 2A USB output

The two main channels support series, parallel, and tracking modes, allowing users to configure the output according to different testing requirements. The additional low-voltage channel is suitable for powering compatible auxiliary circuits and electronic components.

Programmable List Mode with Up to 2,048 Steps

The built-in list mode supports up to 2,048 groups of programmable output settings and a maximum of 99,999 cycles. Users can create sequential voltage and current settings to perform repetitive power supply tests without manually adjusting the output at every step.

This function is particularly useful for automated testing, product aging, repeated power cycling, and long-duration reliability evaluations.

Built-In Waveform Templates for Dynamic Output Testing

The UDP3305S-E provides built-in sine, square, staircase, and ramp waveform templates for generating dynamic output sequences.

These waveform patterns allow users to configure changing output conditions for evaluating electronic circuits under different voltage profiles. They can be used in power supply testing, voltage variation evaluation, and product response testing.

Remote Control Through Multiple Communication Interfaces

The instrument provides multiple interfaces for local computer control and automated test system integration:

• USB Host

• USB Device

• LAN Ethernet

• RS232 Serial Interface

• Digital I/O

With standard SCPI command support, the power supply can communicate with compatible computer software and external test systems. USB, LAN, and RS232 interfaces provide different connection options, while Digital I/O supports external trigger and control signal connections for coordinated testing.

SCPI Support for Automated Test System Integration

SCPI command compatibility makes the UDP3305S-E suitable for integration into programmable test environments. Engineers can use supported commands to configure output settings and control the instrument through compatible software.

It can also be integrated into LabVIEW-based testing workflows through suitable communication programming, helping users build customized automated test systems.

Low-Ripple Linear Output for Precision Applications

The linear power supply architecture provides low output ripple and noise, making it suitable for electronic circuits and components that require stable DC power during testing.

With voltage-mode ripple and noise below 350μVrms / 2mVpp under the specified 5Hz–1MHz measurement bandwidth, the UDP3305S-E supports precision bench testing and electronics development applications.

Series, Parallel and Tracking Modes

The two main output channels support series, parallel, and tracking operation. These configurations provide additional flexibility when different voltage or current combinations are needed.

Users can select the appropriate output arrangement for compatible circuit testing without relying on multiple separate power supplies.

High-Resolution Voltage and Current Programming

The UDP3305S-E provides fine voltage and current programming resolution, together with voltage and current readback functions. Its programming and readback accuracy specifications support detailed output configuration and monitoring during laboratory and production testing.

Built-In Parameter Storage

The instrument provides 10 internal parameter storage groups for saving frequently used settings. Users can recall stored configurations to reduce repeated setup work during routine testing.

Applications

Electronics Research and Development

Suitable for R&D engineers developing and evaluating electronic circuits, sensors, control boards, and other electronic components. Low-ripple output and programmable voltage and current settings provide flexible power conditions for development and verification.

Automated Production Testing

List mode and SCPI remote control support repetitive testing tasks and automated test workflows. The programmable output sequence can reduce manual intervention during production inspection and functional testing.

Product Aging and Reliability Testing

Programmable output sequences and repeat cycles can be used to provide changing DC supply conditions during product aging and reliability evaluations. This helps engineers conduct repeated power supply tests with less manual adjustment.

University and Research Laboratory Experiments

The multi-channel output configuration supports laboratory experiments involving different DC voltage and current requirements. Programmable control and multiple communication interfaces also provide flexibility for teaching, research, and experimental system development.

Industrial Control Board Testing

Suitable for powering compatible industrial control boards, electronic modules, and low-voltage control circuits during inspection, maintenance, and troubleshooting.

Electronic Equipment Repair and Maintenance

The adjustable main channels and auxiliary low-voltage output provide flexible DC power for repair workshops and electronic maintenance benches.

Sensor and Electronic Component Testing

Provides adjustable and programmable DC power for evaluating compatible sensors, electronic components, and circuit modules under different supply conditions.

Quality Check and Terms of Service

Package Includes:

• UNI-T UDP3305S-E Power Supply × 1

• AC Power Cord × 1

• Alligator Clip Test Leads × 2

• USB Data Cable × 1

• Product Download Guide × 1

• Certificate of Conformity × 1

Quality Inspection: The instrument and included accessories should be inspected before shipment to ensure they are in good condition.

Customer Support: Contact us with any questions about product specifications, operation, or compatibility. Our team will assist you with your inquiry.

Technical Specifications

Model and Output Specifications

List Mode and Programmable Functions

Electrical Performance Specifications

<small>Voltage ripple and noise measurement bandwidth: 5Hz–1MHz.</small>

Programming and Readback Specifications

<small>Measurement conditions: 25 ± 5°C.</small>

Temperature Coefficient

Communication Interfaces

Physical and Power Specifications