The Keysight (formerly Agilent / HP) E4418B is a high-performance single-channel RF and microwave power meter from the EPM Series. Designed for benchtop and automatic test equipment (ATE) applications, it provides fast, accurate, and repeatable power measurements. When paired with E-series sensors, it offers high-speed measurements up to 200 readings per second and a dynamic range of up to 90 dB without range-switching delays. It features full backward compatibility with older HP 437B and 436A command sets and supports both Keysight 8480 and E-series power sensors.
Specifications
General
| Parameter | Value |
|---|---|
| Display | LCD with LED backlight |
Physical
| Parameter | Value |
|---|---|
| Power Supply | 100 to 240 VAC at 50/60 Hz; 100 to 120 VAC at 400 Hz; 50 VA maximum |
| Operating Temperature | 0 to 55 °C |
| Dimensions (W×H×D) | 212.6 × 88.5 × 348.3 mm |
| Weight | 4.0 kg |
Measurement Specifications
| Parameter | Value |
|---|---|
| Frequency Range | 9 kHz to 110 GHz (sensor dependent) |
| Power Range | -70 dBm to +44 dBm (100 pW to 25 W) (sensor dependent) |
| Single Sensor Dynamic Range | Up to 90 dB (E-series sensors), up to 50 dB (8480 series sensors) |
| Measurement Speed | Up to 200 readings per second (over GPIB with E-series sensors) |
| Resolution (Logarithmic) | 1, 0.1, 0.01, or 0.001 dB |
| Absolute Accuracy (Logarithmic) | ±0.02 dB (meter only) |
| Absolute Accuracy (Linear) | ±0.5% (meter only) |
Display and Front Panel
| Parameter | Value |
|---|---|
| Measurement Channels | 1 |
Power Reference Subsystem
| Parameter | Value |
|---|---|
| Reference Oscillator Frequency | 50 MHz |
| Reference Oscillator Power Output | 1.0 mW (0 dBm) |
| Reference Oscillator Connector Type | Type-N (female), 50 Ω |
Sensor Compatibility
| Parameter | Value |
|---|---|
| Supported Sensor Families | Keysight 8480 series and E-series sensors |
Connectivity and Interfaces
| Parameter | Value |
|---|---|
| Programming Command Set | SCPI, HP 437B, and HP 436A compatibility |
Power Requirements
| Parameter | Value |
|---|---|
| Battery Operating Time | Up to 5.5 hours continuous use (with Option 001) |
| Battery Type | Internal rechargeable battery (Option 001) |
Physical Specifications
| Parameter | Value |
|---|---|
| Rackmount Form Factor | Half-rack width, 2U height |
Performance
| Parameter | Value |
|---|---|
| Relative Accuracy (Logarithmic) | ±0.04 dB |
| Relative Accuracy (Linear) | ±1.0% |
| Resolution (Linear) | 1.0, 0.1, 0.01, and 0.001% of full scale |
| Reference Oscillator Power Accuracy | ±1.2% (worst case, 1 year) |
| Reference Oscillator VSWR | ≤ 1.06 |
| Warm-up Time | 30 minutes |
Inputs & Outputs
| Parameter | Value |
|---|---|
| Analog Output | 0 to 1.0 V (proportional to power, BNC connector) |
| Analog Output Voltage Range | 0 to 1.0 V (corresponding to full scale) |
| Analog Output Impedance | 1 kΩ (nominal) |
| Remote I/O (TTL) | TTL output for pass/fail limits; TTL input for remote zero/calibration |
Power
| Parameter | Value |
|---|---|
| Power Consumption | 50 VA maximum |
| Line Frequency | 50 / 60 / 400 Hz |
| Battery Recharge Time | < 2 hours (instrument off) / < 8 hours (instrument on) (Option 001 dependent) |
Environmental
| Parameter | Value |
|---|---|
| Storage Temperature | -20 °C to +70 °C |
| Operating Humidity | Up to 95% relative humidity at 40 °C (non-condensing) |
| Operating Altitude | Up to 3,000 m (9,840 ft) |
| Non-Operating Altitude | Up to 15,240 m (50,000 ft) |
Measurement
| Parameter | Value |
|---|---|
| Display Units | Absolute: Watts or dBm; Relative: Percent or dB |
| Display Offset Range | ±99.99 dB |
| Averaging (Filter) | 1 to 1024 (auto or manual) |
Compliance
| Parameter | Value |
|---|---|
| EMC Compliance | CISPR 11 / EN 55011 Group 1, Class A; EN 50082-1 |
| Safety Compliance | EN 61010-1, IEC 1010-1, CSA C22.2 No. 1010.1 |
Options & Configuration
| Parameter | Value |
|---|---|
| Rear Panel Sensor Input | Available via Option 002 or Option 003 |
Technology
RF/Microwave Power Measurement
Applications
Benchtop & ATE Power Measurements