The Keysight Technologies (formerly Agilent HP) E4412A is a high-performance CW diode power sensor designed for measuring average power across a wide frequency range of 10 MHz to 18 GHz. It offers a 90 dB dynamic range (-70 dBm to +20 dBm) with exceptional SWR characteristics, minimizing mismatch uncertainties and ensuring precise RF power measurements when used with compatible power meters.
Specifications
General
| Parameter | Value |
|---|---|
| Interfaces | Proprietary multi-pin connector (uses 11730A series sensor cables) |
Physical
| Parameter | Value |
|---|---|
| Power Supply | Powered directly from the host power meter |
| Operating Temperature | 0 to 55 °C |
Frequency and Power Range Specifications
| Parameter | Value |
|---|---|
| Frequency Range | 10 MHz to 18 GHz |
| Power Measurement Range | -70 dBm to +20 dBm (100 pW to 100 mW) |
| Dynamic Range | 90 dB |
Impedance and VSWR (Standing Wave Ratio)
| Parameter | Value |
|---|---|
| Nominal Input Impedance | 50 Ω |
| Input Connector Type | Type-N (male) |
| Maximum SWR (10 MHz to <30 MHz) | 1.22 |
| Maximum SWR (30 MHz to <2 GHz) | 1.15 |
| Maximum SWR (2 GHz to <6 GHz) | 1.17 |
| Maximum SWR (6 GHz to <11 GHz) | 1.20 |
| Maximum SWR (11 GHz to <18 GHz) | 1.27 |
Measurement Accuracy and Linearity
| Parameter | Value |
|---|---|
| Zero Set | ±50 pW |
| Zero Drift | < ±15 pW (over 1 hour at constant temperature) |
| Measurement Noise | < 115 pW |
Compatibility and System Interface
| Parameter | Value |
|---|---|
| Calibration Factor Data Storage | Onboard EEPROM |
| Compatible Power Meter Models | Keysight EPM (E4418A/B, E4419A/B), EPM-P (E4416A, E4417A), and P-series (N1911A, N1912A) power meters |
| Maximum Measurement Speed | Up to 400 readings per second (with E4416A) |
Sensor Characteristics
| Parameter | Value |
|---|---|
| EEPROM Calibration Data | Calibration factors stored in internal EEPROM |
Calibration Factor Uncertainty
| Parameter | Value |
|---|---|
| Calibration Factor Uncertainty (6 GHz to 11 GHz) | ±2.5% (at 25 °C ± 5 °C) |
| Calibration Factor Uncertainty (11 GHz to 18 GHz) | ±3.0% (at 25 °C ± 5 °C) |
| Calibration Factor Uncertainty (10 MHz to 2 GHz, 0 to 55 °C) | ±2.1% |
| Calibration Factor Uncertainty (2 GHz to 6 GHz, 0 to 55 °C) | ±2.5% |
| Calibration Factor Uncertainty (6 GHz to 11 GHz, 0 to 55 °C) | ±2.8% |
| Calibration Factor Uncertainty (11 GHz to 18 GHz, 0 to 55 °C) | ±3.4% |
Maintenance
| Parameter | Value |
|---|---|
| Recommended Calibration Cycle | 1 year |
Technology
Diode Power Sensor
Applications
RF and Microwave Power Measurement