The HP/Agilent 6634B is a 100 W single-output DC power supply delivering 0–100 V at 0–1 A for automated test systems and rack-mount integration. This series-pass regulated unit combines fast programming response, precision measurement, and GPIB control to meet high-throughput manufacturing test requirements. Command processing executes in less than 4 ms, while output programming settles within 2 ms (standard) or 400 µs (fast mode). The built-in DVM measures actual output voltage and current with 0.03% + 2 mV accuracy, supported by dual-range low-current measurement for precision monitoring.
## Technical Specifications
**Output**
• Voltage: 0–100 V
• Current: 0–1 A
• Power: 100 W
**Programming Accuracy (25°C ±5°C)**
• Voltage: 50 mV
• Current: 0.05% + 0.5 mA
**Measurement Accuracy (GPIB/front panel, 25°C ±5°C)**
• Voltage: 0.03% + 2 mV
**Ripple and Noise (20 Hz–20 MHz)**
• Voltage (normal mode): 0.5 mV RMS / 3 mV peak-to-peak
• Voltage (fast mode): 2 mV RMS / 25 mV peak-to-peak
• Current: 2 mA RMS
**Regulation**
• Load regulation (voltage): 2 mV
• Load regulation (current): 2 mA
• Line regulation (voltage): 0.5 mV
• Line regulation (current): 1 mA
**Response Time**
• Command processing: < 4 ms
• Output programming (rise/fall): < 2 ms standard, < 400 µs fast mode
• Output settling (1 LSB): < 6 ms standard, < 2 ms fast mode
• Measurement time: 50 ms average
**Input Power**
• Full load: 3.5 A, 250 W
• Line voltage (Opt 120): 104–127 Vac, 47–63 Hz
• Line voltage (Opt 220): 191–233 Vac, 47–63 Hz
• Line voltage (Opt 230): 207–253 Vac, 47–63 Hz
**Physical**
• Dimensions: 425.5 mm W × 88.1 mm H × 364.4 mm D
• Weight: 12.7 kg
## Key Features
• Active down-programmer sinks full rated current for fast output discharge to zero volts
• Dual-range precision low-current measurement for accurate output monitoring
• Fast-mode response for high-speed test sequences
• Load and line regulation specifications ensure stable operation across input and output conditions
## Compatibility & Integration
**Interfaces**
• GPIB (HP-IB) with SCPI command support
• RS-232 programming interface
**Environmental**
• Operating humidity: Maximum 95% relative humidity
• Altitude: Up to 2000 meters
• Installation category II, pollution degree 2
**Standards Compliance**
• EMC Directive 89/336/EEC (ISM 1B)
• Low Voltage Directive 73/23/EEC and 93/68/EEC
• CE marked
**Optional Equipment**
• Opt 760: Isolation and polarity reversal relays
