The Keysight Agilent 11941A is a handheld close-field magnetic (H-field) probe designed for EMI and EMC diagnostic measurements. Operating over the 9 kHz to 30 MHz frequency range, it is individually calibrated to provide highly accurate, repeatable measurements of magnetic field strength when connected to a 50-ohm spectrum analyzer or receiver.
Specifications
General
| Parameter | Value |
|---|---|
| Interfaces | SMA (female) RF connector |
Physical
| Parameter | Value |
|---|---|
| Power Supply | None (passive device) |
| Operating Temperature | 0 to +55 °C |
| Dimensions (W×H×D) | 43 mm × 211 mm × 19 mm |
| Weight | 0.11 |
RF & Electrical Performance
| Parameter | Value |
|---|---|
| Frequency Range | 9 kHz to 30 MHz |
| Probe Type | Close-Field H-Field (Magnetic) |
| Output Impedance | 50 ohms nominal |
| Active or Passive Operation | Passive |
| Calibration Accuracy | ±2 dB |
Magnetic & Electric Field Characteristics
| Parameter | Value |
|---|---|
| E-Field Suppression | High rejection due to balanced dual-loop design |
| Calibration Type | Individually calibrated with antenna factor chart |
Connectivity & Interface
| Parameter | Value |
|---|---|
| RF Output Connector Type | SMA |
| Connector Gender | Female |
| Connector Impedance | 50 ohms |
| Compatibility | Spectrum analyzers, EMI receivers, and oscilloscopes with 50-ohm inputs |
Environmental
| Parameter | Value |
|---|---|
| Storage Temperature Range | -40 to +75 °C |
Electrical
| Parameter | Value |
|---|---|
| Maximum Safe Input Power | 0.5 W |
Calibration
| Parameter | Value |
|---|---|
| Calibration Field Impedance | 377 Ω |
Technology
EMC/EMI Near-Field Probe
Applications
EMI/EMC Diagnostics and Troubleshooting