The HP/Agilent 66311D is a DC power supply engineered for high-throughput automated testing in digital wireless communications. It delivers 0–15 V at 0–3 A continuous output, with peak current capability to 5 A for up to 7 ms, and supports current sinking to 2.8 A for battery charger validation. The unit features a built-in digital voltmeter (DVM) and automatic open-sense detection to prevent improper remote voltage settings and ensure accurate device under test calibration. Rapid transient response—recovering to within 20 mV of final value in less than 35 µs following 0.1–1.5 A load steps—minimizes voltage dip (70 mV) during pulsed current demands typical of modern digital devices.
## Technical Specifications
**Output Ratings**
• Voltage: 0–15 V
• Continuous Current: 0–3 A
• Peak Current (7 ms max): 5 A
• Current Sinking: up to 2.8 A
**Accuracy (25°C ±5°C)**
• Voltage Programming: ±10 mV (% of setting + fixed value)
• Current Programming: ±1.33 mA (% of setting + fixed value)
• DC Readback: ±0.04% of setting + 5 mV
• AC + DC RMS Readback (60 Hz–10 kHz, > 25 mVrms): ±1% of setting + 5 mV
**Ripple and Noise (20 Hz–20 MHz)**
• Voltage RMS: 1 mV
• Voltage Peak-to-Peak: 6 mV
• Current RMS: 2 mA
**Transient Response**
• Recovery Time: < 35 µs (within 20 mV of final value)
• Voltage Dip: 70 mV
**Physical**
• Dimensions: 212.8 mm W × 88.1 mm H × 435 mm D
• Weight: approximately 9 kg
• Steel chassis construction
**Environmental**
• Operating Temperature: 0°C to 55°C
• Humidity: up to 95% relative humidity
• Altitude: up to 2000 m
• Installation Category II, Pollution Degree 2
## Key Features
• Built-in DVM for precision voltage measurement
• Microampere-range measurement capability for sleep-mode characterization
• Dynamic current pulse measurement for multi-mode battery drain analysis (talk, active, standby, sleep)
• Overvoltage and overcurrent protection
• Automatic open sense-connection detection
## Typical Applications
• Digital wireless device battery charger testing
• Pulsed-load battery drain characterization
• Device under test power delivery validation
• Sleep and active-mode current profiling
## Compatibility & Integration
• HP-IB (IEEE 488.2, SCPI command set) interface
• RS-232 available on select configurations
