The Keysight (formerly Agilent HP) E4418A is a high-performance, single-channel programmable RF power meter belonging to the EPM Series. Designed for benchtop and automatic test equipment (ATE) systems, it provides fast, accurate, and repeatable power measurements. It features complete compatibility with HP/Agilent 8480 and E-series power sensors (excluding the E9320A family), allowing measurements across a broad range of frequencies (100 kHz to 110 GHz) and power levels (-70 dBm to +44 dBm) depending on the attached sensor.
Specifications
General
| Parameter | Value |
|---|---|
| Interfaces | GPIB (IEEE-488.2), RS-232, RS-422, Recorder Output (BNC) |
| Display | High-resolution backlit LCD |
| Non-Volatile RAM Battery Life | 5 years typical |
Physical
| Parameter | Value |
|---|---|
| Operating Temperature | 0 to 55 |
| Dimensions (W×H×D) | 212.6 mm × 88.5 mm × 348.3 mm |
| Weight | 4.0 kg |
Measurement Performance
| Parameter | Value |
|---|---|
| Measurement Channels | Single-channel |
| Frequency Range | 100 kHz to 110 GHz (sensor dependent) |
| Power Range | -70 dBm to +44 dBm (sensor dependent) |
| Instrumentation Uncertainty | ±0.5% |
| Maximum GPIB Rate | 200 readings/second (with E-series sensors) |
| Logarithmic Resolution Settings | 1.0, 0.1, 0.01, and 0.001 dB |
| Linear Resolution Settings | 1, 2, 3, and 4 significant digits |
Power Reference Oscillator
| Parameter | Value |
|---|---|
| Reference Power Output | 1.00 mW (0.00 dBm) |
| Reference Output Frequency | 50 MHz |
| Reference Power Accuracy (at 25 °C) | ±0.9% |
| Reference Power Accuracy (0 to 55 °C) | ±1.2% |
| Power Reference VSWR | 1.06 maximum |
| Power Reference Connector Type | Type-N (female), 50 Ω |
| Power Reference Connector Location | Front panel (Option 002 for rear panel) |
Sensor Compatibility
| Parameter | Value |
|---|---|
| Compatible Sensors | Keysight/Agilent 8480 series and E-series (except E9320A family) |
| Calibration Factor Entry Modes | Manual entry, sensor calibration tables, or automatic download (E-series) |
| Sensor Calibration Tables | Up to 20 tables |
Triggering and Timing
| Parameter | Value |
|---|---|
| Trigger Modes | Free Run, Single, Bus, External |
| External Trigger Input Level | TTL-compatible (BNC) |
Connectivity
| Parameter | Value |
|---|---|
| GPIB Interface | IEEE-488.2 (GPIB) connector |
| Serial Interface | RS-232 / RS-422, RJ45 connector |
| Recorder Output Range | 0 to 1 V into 1 kΩ |
| Recorder Output Connector | BNC (rear panel) |
| Trigger Input | TTL-compatible BNC connector (rear panel) |
| Ground Terminal | Binding post (rear panel) |
| Maximum Sensor Cable Length | 61 m (200 ft) |
| GPIB Interface Capabilities | SH1, AH1, T6, TE0, L4, LE0, SR1, RL1, PP1, DC1, DT1, C0 |
User Interface
| Parameter | Value |
|---|---|
| Display Type | Liquid Crystal Display (LCD) with LED backlight |
| Analog Peaking Meter Mode | Yes (with zoom capability) |
Software and Control Features
| Parameter | Value |
|---|---|
| Command Set | SCPI (Standard Commands for Programmable Instruments) |
| Legacy Emulation Mode | HP 437B code compatible |
| Save/Recall Registers | 10 states |
| Relative Measurement Mode | Yes |
| Display Offset Range | ±100 dB |
| Limit Testing | High and low limit alarms |
Power and Electrical
| Parameter | Value |
|---|---|
| Line Voltage Input Range | 85 to 264 VAC (automatic selection) |
| Line Frequency Range | 47 to 440 Hz |
| Fuse Rating and Type | T1.5A, 250V (slow blow, time lag) |
Physical and Mechanical
| Parameter | Value |
|---|---|
| Width | 212.6 mm (8.4 in) |
| Height | 88.5 mm (3.5 in) |
| Depth | 348.3 mm (13.7 in) |
| Weight (Net) | 4.0 kg (8.8 lb) |
| Weight (Shipping) | 7.9 kg (17.4 lb) |
| Rackmount Compatibility | Yes (optional rackmount kits available) |
Environmental and Standards
| Parameter | Value |
|---|---|
| Operating Temperature Range | 0 to 55 °C |
| Storage Temperature Range | -20 to +70 °C |
| Operating Humidity Range | Up to 95% RH at 40 °C (non-condensing) |
| Storage Humidity Range | Up to 90% RH at 65 °C |
| Maximum Operating Altitude | 4,600 meters (15,000 feet) |
| Warm-up Time | 30 minutes |
| EMC Compliance | Conforms to CE standards |
| Safety Compliance | Conforms to CSA standards |
Triggering
| Parameter | Value |
|---|---|
| Trigger Delay Range | 0 to 1.0 s |
| Trigger Delay Resolution | 100 µs |
| External Trigger Jitter | ±100 µs |
Inputs & Outputs
| Parameter | Value |
|---|---|
| Recorder Output Impedance | 1 kΩ (typical) |
Power Options
| Parameter | Value |
|---|---|
| Option 001 Battery Type | Sealed Lead Acid |
| Option 001 Battery Operating Time | Up to 3 hours (backlight on), up to 4 hours (backlight off) |
| Option 001 Battery Charge Time | 3 hours to 90% capacity (instrument off), 24 hours to 90% capacity (instrument on) |
Performance
| Parameter | Value |
|---|---|
| Calibration Factor Range | 1.0% to 150.0% in 0.1% increments |
| Measurement Speed (Normal Mode) | 20 readings/second |
| Measurement Speed (Swift Mode) | 200 readings/second (via GPIB) |
Options
| Parameter | Value |
|---|---|
| Option 002 Configuration | Rear panel sensor connector and front panel power reference |
| Option 003 Configuration | Rear panel sensor connector and rear panel power reference |
Technology
Diode and Thermocouple RF Power Measurement
Applications
RF and Microwave Power Measurement