The Keysight (formerly Agilent HP) 6634A is a 100-watt single-output programmable linear DC power supply capable of both sourcing and sinking current. Designed for precision laboratory and automated test equipment (ATE) applications, it features high-performance low-noise output, high programming accuracy, and a standard GPIB interface with software calibration.
Specifications
General
| Parameter | Value |
|---|---|
| Interfaces | GPIB (HP-IB) |
| Display | Vacuum Fluorescent Display (VFD) |
Physical
| Parameter | Value |
|---|---|
| Power Supply | 100 VAC / 120 VAC / 220 VAC / 240 VAC (factory-configured or switch-selectable depending on option), 47 to 63 Hz, 350 VA max |
| Operating Temperature | 0 to 55 °C |
| Dimensions (W×H×D) | 212.8 mm × 88.1 mm × 398.3 mm |
| Weight | 9.6 kg |
| Rack Mount Options | Option 908 (Rack flange kit), Option 909 (Rack flange and front handle kit) |
Output Specifications
| Parameter | Value |
|---|---|
| Number of Outputs | 1 |
| DC Output Voltage Range | 0 to 100 V |
| DC Output Current Range | -1 to +1 A (two-quadrant source/sink capability) |
| Maximum Rated Power | 100 W |
| DC Output Voltage Programming Range | 0 to 102.38 V |
| DC Output Current Programming Range | 0.004 to 1.0238 A |
| Output Isolation Voltage | ±240 Vdc from chassis ground |
Regulation
| Parameter | Value |
|---|---|
| Load Regulation (Voltage) | 0.01% + 2 mV |
| Load Regulation (Current) | 0.01% + 0.25 mA |
| Line Regulation (Voltage) | 0.01% + 2 mV |
| Line Regulation (Current) | 0.01% + 0.25 mA |
Ripple and Noise
| Parameter | Value |
|---|---|
| Constant Voltage Ripple (RMS) | 0.5 mV |
| Constant Voltage Ripple (Peak-to-Peak) | 3 mV |
| Constant Current Ripple (RMS) | 0.5 mA |
Programming Accuracy
| Parameter | Value |
|---|---|
| Voltage Programming Accuracy | 0.05% + 50 mV |
| Current Programming Accuracy | 0.06% + 1.2 mA |
| OVP Programming Accuracy | 0.1% + 1 V |
Readback Accuracy
| Parameter | Value |
|---|---|
| Voltage Readback Accuracy | 0.05% + 50 mV |
| Current Readback Accuracy | 0.05% + 0.8 mA |
Resolution
| Parameter | Value |
|---|---|
| Voltage Programming Resolution | 25 mV |
| Current Programming Resolution | 0.25 mA |
| OVP Programming Resolution | 500 mV |
| Typical Voltage Readback Resolution | 25 mV |
| Typical Current Readback Resolution | 0.25 mA |
Transient Response & Drift
| Parameter | Value |
|---|---|
| Load Transient Response Time | 100 µs (to recover to within 100 mV of nominal following a 10% to 100% load change) |
| Voltage Temperature Coefficient | 0.01% + 1 mV per °C |
| Current Temperature Coefficient | 0.01% + 0.025 mA per °C |
Protection and Sense Capabilities
| Parameter | Value |
|---|---|
| Overvoltage Protection (OVP) Range | 2 to 110 V |
| Remote Sensing Capability | Yes |
| Maximum Remote Sense Lead Drop | 0.5 V per lead |
Compliance & Calibration
| Parameter | Value |
|---|---|
| Calibration Method | Software calibration over HP-IB (no internal potentiometers) |
Connectivity & Interface
| Parameter | Value |
|---|---|
| Output Connection Terminals | Rear-panel screw terminals (standard); front-panel binding posts optional |
| Operating Modes Selector | Fast or normal mode selectable via rear-panel switch |
| Built-in Relays & DFI/RI Option | Available as factory option |
Environmental Specifications
| Parameter | Value |
|---|---|
| Storage Temperature Range | -40 to 75 °C |
| Cooling Method | Fan cooled |
Physical Characteristics
| Parameter | Value |
|---|---|
| Shipping Weight | 11.8 kg |
| Form Factor | Half-rack, 2U |
Power
| Parameter | Value |
|---|---|
| AC Input Voltage | 100 VAC / 120 VAC / 220 VAC / 240 VAC (jumper selectable, ±10%) |
| AC Input Frequency | 47 to 63 Hz |
| Maximum AC Input Power | 350 VA |
| AC Input Current | 3.4 A @ 100 VAC / 2.9 A @ 120 VAC / 1.6 A @ 220 VAC / 1.5 A @ 240 VAC |
| AC Input Fuse | 4 A SB (100/120 VAC) / 2 A SB (220/240 VAC) |
| AC Input Voltage Options | Option 100 (100 VAC) / Option 120 (120 VAC) / Option 220 (220 VAC) / Option 240 (240 VAC) |
Performance
| Parameter | Value |
|---|---|
| Up-programming Time (No Load) | 15 ms (to within 1% of final value) |
| Up-programming Time (Full Load) | 15 ms (to within 1% of final value) |
| Down-programming Time (No Load) | 500 ms (to within 1% of final value) |
| Down-programming Time (Full Load) | 15 ms (to within 1% of final value) |
| Command Processing Time | 20 ms |
| Output Voltage Drift (8 hours) | 0.03% + 10 mV |
| Output Current Drift (8 hours) | 0.03% + 0.5 mA |
| Output Voltage Drift (30 minutes) | 0.04% + 15 mV |
Interfaces
| Parameter | Value |
|---|---|
| GPIB Interface Capabilities | SH1, AH1, T6, L4, SR1, RL1, PP1, DC1, DT1, C0, E1 |
| Analog Programming & Monitor (Option 002) | Provides 0-5 V or 0-10 V analog control and monitor outputs |
Protection
| Parameter | Value |
|---|---|
| Overcurrent Protection (OCP) | Programmable shutdown |
| Overtemperature Protection | Output shutdown upon high temperature |
Software & Programming
| Parameter | Value |
|---|---|
| Programming Language | HP proprietary command set (non-SCPI) |
Technology
Linear DC Power Supply
Applications
Precision DC power sourcing and sinking, automated testing (ATE)