The NI PXI-4110 is a triple-output programmable DC power supply for the PXI platform, delivering independent voltage and current control across three isolated channels. Channel 0 provides 0 to +6 V at 5 A maximum; Channels 1 and 2 deliver ±20 V at 1 A maximum each. All channels feature 16-bit resolution for voltage and current programming, with voltage steps as fine as 120 µV and current steps to 400 nA depending on range. The module sources up to 46 W total output power when externally powered via an auxiliary DC input (11 VDC to 15.5 VDC, 5 A maximum). Internal PXI powering limits isolated channels to 100 mA while the 0–6 V channel reaches full current.
Technical Specifications
Output Channels
• Channel 0: 0 to +6 V, 5 A maximum
• Channel 1: 0 to +20 V, 1 A maximum
• Channel 2: 0 to −20 V, 1 A maximum
• Channels 1 and 2 isolated from earth ground, non-isolated from each other
Resolution & Accuracy
• Voltage programming: 120 µV steps (0–6 V), 400 µV steps (±20 V)
• Current programming: 20 µA steps (1 A range), 400 nA steps (20 mA range)
• 16-bit resolution for voltage setpoint, current limit, voltage readback, and current readback
• Voltage accuracy: ±(0.025% + 2 mV) on 0–6 V; ±(0.025% + 4 mV) on ±20 V channels
• Current accuracy: ±(0.05% + 0.4 mA) at 1 A range; ±(0.05% + 0.2 mA) at 20 mA range
Power & Response
• Voltage output speed: < 80 ms in 20 mA range
• Transient recovery: < 0.1% of voltage range within 50 µs after load current step (50% to 100%)
• Voltage load regulation: 0.1% to 0.42% per ampere, channel-dependent
• Line regulation (auxiliary input): ±(0.01% + 1 mV) per volt of input change on Channels 1 and 2
– Key Features
• Three independent isolated output channels with dual voltage ranges
• Fine-step programming and measurement resolution across all channels
• Configurable for internal or external powering modes
• Fast transient response suited for dynamic load testing
• Precise load and line regulation for stable, repeatable output
– Typical Applications
Component characterization, power supply validation, circuit development, and multi-rail test scenarios requiring isolated voltage and current control.
– Compatibility & Integration
Designed for PXI chassis integration. Full power operation requires external auxiliary power source such as the NI APS-4100.
