Amrel PPS-2322

The Amrel PPS-2322 is a dual-channel programmable DC power supply engineered for benchtop testing, laboratory research, and integration into automatic test equipment (ATE) systems. Each independent channel delivers 0–32V at 0–2A, with combined output capacity of 232 W. The unit supports independent or tracking-mode operation, front-panel keypad control, and GPIB remote programming. Voltage and current settings are fully programmable, with integrated over-voltage protection (OVP) and over-current protection (OCP). Output connections are provided via front-panel binding posts and rear-panel screw terminals; remote-sense terminals enable accurate load regulation. The LCD display and dual control interfaces—local keypad and GPIB—accommodate both manual bench use and automated test sequences. Internal architecture includes an Analog Devices AD7541 12-bit DAC for voltage resolution, 80C31 microprocessor control, and pass-transistor output stage. An internal cooling fan operates continuously during use. The supply occupies 1U of vertical rack space and is configurable for 1/2 rack or 19-inch rack mounting. Operating range spans 0°C to 50°C; airflow requires minimum 1 in. clearance on all sides with intake through sides and exhaust through rear. Calibration in local or remote mode is supported and may require external measurement equipment. Reverse-polarity protection guards against accidental wiring errors.

– Technical Specifications

• Channels: 2 independent
• Output voltage: 0–32V per channel
• Output current: 0–2A per channel
• Total power: 232 W
• Voltage programming via 12-bit DAC
• Current programming with full programmability
• Over-voltage protection (OVP)
• Over-current protection (OCP)
• Tracking mode for synchronized dual-channel operation
• Output enable/disable function
• Display: LCD
• Microprocessor: 80C31
• Operating temperature: 0°C to 50°C
• Rack height: 1.75 in. (1U)

– Key Features

• Dual independent channels for multi-rail test configurations
• GPIB interface for remote control and integration into ATE systems
• Front-panel binding posts and rear-panel screw terminals for flexible wiring
• Remote sense terminals for load regulation accuracy
• Output enable/disable for sequenced power delivery
• Reverse-polarity protection
• Local and remote calibration modes

– Typical Applications

• Benchtop circuit characterization and troubleshooting
• Component qualification and stress testing
• Automatic test equipment (ATE) integration
• Multi-supply laboratory systems requiring synchronized outputs

– Compatibility & Integration

GPIB interface enables seamless integration into automated test systems. Configurable rack mounting supports standard 19-inch racks or 1/2 rack installations. Designed for laboratory and manufacturing environments with standard operating temperatures.