The Keysight 42841A Bias Current Source is a highly stable, high-current DC bias source designed for use with compatible LCR meters (such as the 4284A, 4285A, and E4980A) to perform accurate DC bias current measurements on inductors and magnetic components. It provides up to 20 A of DC bias current individually, and can be configured in a dual-unit setup to deliver up to 40 A of DC bias current.
Specifications
General
| Parameter | Value |
|---|---|
| Interfaces | Proprietary control interface (rear panel connector for host LCR meter) |
| Display | Status indicator LEDs (No built-in digital screen) |
Physical
| Parameter | Value |
|---|---|
| Power Supply | 90 to 132 V AC / 198 to 264 V AC (switchable), 47 to 66 Hz, 600 VA max |
| Operating Temperature | 0 to 45 °C |
| Dimensions (W×H×D) | 426 mm × 177 mm × 498 mm |
| Weight | 25 kg |
Current Source Output
| Parameter | Value |
|---|---|
| Output Current Range (Single Unit) | 0.01 A to 20.0 A (with 42842A/B test fixture) |
| Output Current Range (Dual Units) | 0.02 A to 40.0 A (with 42842B test fixture) |
| Output Current Range (with 42851A) | 0.01 A to 2.0 A (with 4285A and 42851A) |
| Programming Resolution (Single Unit) | 0.01 A |
| Programming Resolution (Dual Units) | 0.02 A |
| Programming Accuracy (Single Unit) | ±(1% of setting + 5 mA) at 23 °C ± 5 °C |
| Programming Accuracy (Dual Units) | ±(1% of setting + 10 mA) at 23 °C ± 5 °C |
| Programming Accuracy (with 42851A) | ±(1% of setting + 5 mA) |
System Integration
| Parameter | Value |
|---|---|
| Compatible LCR Meters | Keysight / Agilent / HP 4284A, 4285A, E4980A |
| Compatible Bias Current Fixtures | Keysight / Agilent 42842A (20 A max), 42842B (40 A max), 42851A (2 A max) |
| Number of Bias Channels | 1 |
| Control Interface | Dedicated 25-pin D-sub connector for connection to HP 4284A/4285A |
Physical and Environmental
| Parameter | Value |
|---|---|
| Storage Temperature Range | -20 °C to 60 °C |
| Operating Humidity Range | ≤ 95% RH at 40 °C |
| Cooling System | Internal forced-air cooling fan |
DC Bias Output
| Parameter | Value |
|---|---|
| DC Compliance Voltage | 10 V max. |
Performance
| Parameter | Value |
|---|---|
| Supported Frequency Range | 20 Hz to 1 MHz (with 4284A); 75 kHz to 30 MHz (with 4285A and 42851A) |
| Warm-up Time | 30 minutes |
Safety
| Parameter | Value |
|---|---|
| Interlock Function | Equipped (disables DC bias output when interlock circuit is open) |
Outputs
| Parameter | Value |
|---|---|
| External Current Monitor Output | 0 to 2 V DC (corresponding to 0 to 20 A), BNC connector on rear panel |
User Interface
| Parameter | Value |
|---|---|
| Front Panel Status Indicators | BIAS ON, INTERLOCK, THERMAL, UNREGULATED |
Inputs & Outputs
| Parameter | Value |
|---|---|
| Rear Panel Connectors | High-current DC BIAS output terminals, 25-pin D-sub CONTROL connector, BNC INTERLOCK connector, BNC EXT MON connector |
Environmental
| Parameter | Value |
|---|---|
| Operating Altitude | Up to 2,000 m |
Compliance & Safety
| Parameter | Value |
|---|---|
| Safety Compliance | IEC 61010-1 / EN 61010-1 |
| EMC Compliance | EN 55011 Group 1, Class A / EN 50082-1 |
| Pollution Degree | 2 |
| Overvoltage Category | II |
Technology
DC Bias Current Source
Applications
DC bias testing for inductors and magnetic components