The Keysight (formerly Agilent / HP) E4404B is a mid-performance spectrum analyzer from the ESA-E Series, offering a frequency range of 9 kHz to 6.7 GHz (expandable down to 100 Hz via option). It is designed for general-purpose RF and microwave measurements, providing an excellent balance of performance, speed, and accuracy in a rugged, portable form factor. It features a 5-minute warm-up to guaranteed measurement accuracy, an overall amplitude accuracy of ±0.4 dB, and high dynamic range.
Specifications
General
| Parameter | Value |
|---|---|
| Interfaces | GPIB (IEEE-488), RS-232, Parallel printer port |
| Display | 16.5 cm (6.5 in) VGA color LCD |
Physical
| Parameter | Value |
|---|---|
| Power Supply | 90 - 132 V AC (47-440 Hz) / 195 - 250 V AC (47-66 Hz); < 300 W |
| Operating Temperature | 0 to 55 |
| Dimensions (W×H×D) | 373 × 222 × 409 |
| Weight | 17.1 |
Frequency Specifications
| Parameter | Value |
|---|---|
| Frequency Range | 9 kHz to 6.7 GHz (100 Hz optional) |
| Video Bandwidth (VBW) Range | 30 Hz to 3 MHz |
| Phase Noise (SSB) at 10 kHz Offset | ≤ -90 dBc/Hz (@ 1 GHz) |
| Span Range | 0 Hz (zero span), 100 Hz to 6.7 GHz |
| Frequency Reference Aging Rate | ± 2 × 10^-6 / year (Standard), ± 1 × 10^-7 / year (Option 1D5) |
| Calibration Signal Frequency | 50 MHz |
Amplitude Specifications
| Parameter | Value |
|---|---|
| Absolute Amplitude Accuracy | ±0.4 dB |
| Maximum Safe Input Level (Average Continuous Power) | +30 dBm (1 W) |
| Maximum DC Input Voltage | 0 Vdc |
| Input Attenuation Range | 0 to 65 dB |
| Input Attenuation Step Size | 5 dB |
| 1 dB Gain Compression | 0 dBm (≥ 50 MHz) |
| Logarithmic Scale Range | 0.1, 0.2, 0.5 dB/div and 1 to 20 dB/div in 1 dB steps |
| Linear Scale | 10 divisions |
Sweep and Trigger Specifications
| Parameter | Value |
|---|---|
| Sweep Time Range | 1 ms to 4000 s (span > 0 Hz), 50 µs to 4000 s (zero span) |
Inputs and Outputs
| Parameter | Value |
|---|---|
| RF Input Connector Type | Type-N (female) |
| RF Input Impedance | 50 Ω |
| Reference Timebase Output Frequency | 10 MHz |
Physical, Environmental and Power Specifications
| Parameter | Value |
|---|---|
| Display Resolution | VGA (640 × 480) |
| Recommended Warm-up Time | 5 minutes |
Dynamic Range & Spurious
| Parameter | Value |
|---|---|
| Residual Responses | < -90 dBm (≥ 150 kHz, input terminated, 0 dB attenuation) |
Sweep & Trigger
| Parameter | Value |
|---|---|
| Sweep Time Accuracy | ± 1% |
General Specifications
| Parameter | Value |
|---|---|
| Detectors | Normal, Positive Peak, Sample, Negative Peak, Average |
Options & Features
| Parameter | Value |
|---|---|
| Tracking Generator (Option 1DN) | 9 kHz to 3.0 GHz |
Frequency
| Parameter | Value |
|---|---|
| Frequency Counter Resolution | Selectable from 1 Hz to 100 kHz |
Data Processing
| Parameter | Value |
|---|---|
| Trace Points | 401 |
Amplitude
| Parameter | Value |
|---|---|
| Measurement Range | Displayed Average Noise Level (DANL) to +30 dBm |
| Input VSWR | < 1.5:1 (≥ 10 dB attenuation, 10 MHz to 3 GHz) |
Inputs & Outputs
| Parameter | Value |
|---|---|
| External Reference Input Frequency | 10 MHz |
Power
| Parameter | Value |
|---|---|
| Power Consumption | < 300 W maximum |
Technology
Superheterodyne Spectrum Analyzer
Applications
General-purpose RF and microwave measurements, component testing, spectrum monitoring