The HP/Agilent 66309D is a dual-output DC power supply purpose-built for mobile communications and battery device testing. Each of its two independent outputs delivers 0–15 V at 0–3 A (45 W max per output, with 5 A peak capability for up to 7 ms). A built-in digital voltmeter provides direct measurement of external voltages from −4.5 Vdc to +25 Vdc, eliminating the need for external instrumentation.
## Technical Specifications
Output ratings span 0–15 V and 0–3 A per channel with 45 W maximum power per output. Peak current reaches 5 A for transient testing up to 7 ms. Programming accuracy is 0.05% + 10 mV for voltage and 0.05% + 1.33 mA for current (at 25°C ±5°C). DC readback accuracy for voltage measures 0.03% + 5 mV. Current readback ranges from 0.2% + 0.5 mA (positive range) to 0.1% + 2.5 µA in the ±20 mA range.
Voltage noise and ripple stay exceptionally low: 1.0 mV RMS and 6 mV peak-to-peak. Current ripple is 2 mA RMS. Transient response time is less than 35 µs with a 70 mV voltage drop. Output programming settles in under 200 µs rise/fall time, with full settling to 1 LSB within 6 ms (2 ms in fast mode).
The integrated DVM achieves 0.04% + 5 mV DC accuracy and 1% + 5 mV AC+DC RMS accuracy (60 Hz to 10 kHz). Common mode measurement range extends to −4.5 Vdc to +25 Vdc.
## Key Features
• Simultaneous independent control of main battery and charger circuitry testing
• Excellent voltage transient response prevents test interruptions from wiring voltage drops
• Open-sense wire connection detection for cellular telephone applications
• Adaptive fan speed for quiet operation at reduced power levels
• Built-in digital voltmeter eliminates external measurement equipment
• GPIB and remote interfaces for automated test systems
## Typical Applications
Mobile device battery characterization, wireless charging circuit validation, cellular telephone power integrity testing, and simultaneous battery/charger circuit evaluation.
## Compatibility & Integration
GPIB connectivity enables integration into automated test benches. Optional 521 adds solid-state output disconnect relays. Rackmount kits available: Option 1CM (standard) and Option AXS (side-by-side). Weight: 9.7 kg. Operating altitude to 2000 m, humidity to 95%.
