The HP/Agilent 6691A is a 6600 W DC power supply delivering 0–30 V at 0–220 A for high-demand manufacturing test, burn-in, and automated test equipment environments. It combines precise analog and programmable control with low output ripple, remote sensing, and comprehensive protection to support integration into complex multi-output test systems via GPIB and serial connectivity.
## Technical Specifications
**Output Ratings**
• Voltage: 0–30 V
• Current: 0–220 A
• Power: 6600 W
**Programming Accuracy (at 25 ±5°C)**
• Voltage: 0.04% + 30 mV
• Current: 0.1% + 125 mA
**Readback Accuracy (front panel or GPIB, 25 ±5°C)**
• Voltage: 0.05% + 45 mV
• Current: 0.1% + 165 mA
**Output Ripple & Noise (20 Hz–20 MHz)**
• Voltage (RMS): 2.5 mV
• Voltage (peak-to-peak): 25 mV
• Current (constant current, load inductance >5 µH rms): 50 mA
## Key Features
• Analog voltage and current control via rear panel inputs (modulation: 0 to –5 V for voltage, 0 to +5 V for current; input impedance ≥30 kΩ)
• SCPI command set for instrument control
• Remote sensing: up to half rated voltage drop per load lead
• Built-in voltage and current measurements
• Overvoltage, overcurrent, and overtemperature protection
• Programmable shutdown with fast up-and-down ramp capability
• External TTL shutdown input and linked power supply shutdown
• Fan-speed control for reduced acoustic noise
• Error status reporting
## Interfaces & Control
• GPIB interface for local and remote operation
• Analog programming and monitoring via rear panel
• Serial link supports control of up to 16 outputs at one GPIB address using auxiliary mainframes
## Physical & Environmental
• Dimensions: 425.5 mm W × 221.5 mm H × 674.7 mm D
• Rack-mountable; compatible with 5000 W Agilent 6680 Series footprint
• Installation Category III
• Qualified for temperature, humidity, altitude, shock, vibration, ESD, AC line, EMC, and RFI environments
