# Agilent E4422A 250 kHz to 4000 MHz Analog RF Signal Generator (Pre-Owned)

# Agilent E4422A 250 kHz to 4000 MHz Analog RF Signal Generator (Pre-Owned)

## Key Features At A Glance

-   Analog RF signal generation from 250 kHz to 4000 MHz with 0.01 Hz frequency resolution
-   Output level range +13 dBm to -136 dBm with 0.02 dB resolution into 50 ohms
-   AM, FM, phase, and pulse modulation via internal source plus two external inputs (EXT1, EXT2)
-   Internal modulation source generates sine, square, ramp, triangle, pulse, and noise waveforms
-   SSB phase noise <-120 dBc/Hz at 500 MHz (typical, 20 kHz offset)
-   HP-IB (IEEE-488.2) and RS-232 remote interfaces with SCPI 1992.0 control for automated systems
-   Optional high-stability timebase (Opt 1E5) rated <±0.1 ppm/yr aging

The Agilent E4422A is an analog RF signal generator covering 250 kHz to 4000 MHz, identified on its specifications as the ESG-4000A. It produces continuous-wave and modulated RF signals across this span with 0.01 Hz frequency resolution, an output level window of +13 dBm down to -136 dBm, and a 50 ohm output impedance.

An analog signal generator supplies a known, controllable RF stimulus — a defined frequency, amplitude, and modulation — that an engineer applies to a device under test to characterize its response. The E4422A pairs this carrier-sourcing role with built-in amplitude, frequency, phase, and pulse modulation, so a single instrument can both generate the carrier and impress test modulation onto it.

ValueTronics stocks and holds its own inventory in a 20,000 square foot secure warehouse at 1675 Cambridge Drive, Elgin, Illinois, which lets us manage availability and fulfillment directly. Every used unit is inspected and functionally verified by our in-house team before it ships, while new units ship factory-sealed exactly as received from the manufacturer.

## Brand Heritage

The instrument carries Agilent Technologies branding. Agilent was spun off from Hewlett-Packard in 1999, and its electronic test-and-measurement business was subsequently established as Keysight Technologies in 2014.

## Product Core & Specifications

Specification

Value

Frequency

Frequency Range (Agilent ESG-4000A)

250 kHz to 4000 MHz

Resolution

0.01 Hz

Switching Speed (Modulation On)

<45 ms, typical

Switching Speed (Modulation Off)

<35 ms, typical

Accuracy

Same as timebase

Sweep Modes

Operating modes

Step: frequency & power, and arbitrary list

Dwell Time

2 ms to 60 sec

Number of Points

2 to 401

Internal Reference Oscillator

Aging Rate (Standard, typical)

<±2 ppm/yr

Aging Rate (High Stability, Opt 1E5)

<±0.1 ppm/yr or <±0.0005 ppm/day after 45 days

Temperature (Standard)

<±1 ppm

Temperature (High Stability, Opt 1E5)

<±0.05 ppm, typical (0° to 55° C)

Line Voltage (Standard, +5%, -10%)

<±0.1 ppm

Line Voltage (High Stability, Opt 1E5, +5%, -10%)

<±0.002 ppm, typical

Timebase Reference Output

Frequency

10 MHz

Amplitude

\>0.35 Vrms into 50 ohm load

External Reference Input

Frequency

1, 2, 5, 10 MHz ± typ. 10 ppm (Option 1E5: 1 ppm, typical)

Amplitude

\>0.15 Vrms

Input Impedance

50 ohm

Output

Range (250 kHz to 1000 MHz)

+13 to -136 dBm

Range (>1000 MHz to 3000 MHz)

+10 to -136 dBm

Range (>3000 MHz to 4000 MHz)

+7 to -136 dBm

Resolution

0.02 dB

Level Accuracy (at 23 ±5°C, +7 to -127 dBm, 250 kHz to 2 GHz)

±0.5 dB

Level Accuracy (at 23 ±5°C, +7 to -127 dBm, 2 GHz to 4 GHz)

±0.9 dB

Level Accuracy (<-127 dBm, 250 kHz to 2 GHz)

±1.5 dB

Level Accuracy (<-127 dBm, 2 GHz to 4 GHz)

±2.5 dB

Attenuator Hold Level Range

\>17 dB

Switching Speed

<25 ms typical

Switching Speed (With Power Search Mode)

<210 ms typical

Reverse Power Protection (250 kHz to 2000 MHz)

50 Watts

Reverse Power Protection (>2000 MHz to 4000 MHz)

25 Watts

Max DC Voltage

50 V

SWR (typical, 250 kHz to 2000 MHz)

<1.4:1

SWR (typical, >2000 to 4000 MHz)

<1.9:1

Output Impedance

50 ohms

Level Accuracy note

Accuracy degrades by 0.02 dB/°C over full temperature range and by 0.3 dB above +7 dBm.

Frequency Bands

Band 1: 250 kHz to ≤249.999 MHz

N# = 1

Band 2: >249.999 to ≤500 MHz

N# = 0.5

Band 3: >500 MHz to ≤1 GHz

N# = 1

Band 4: >1 to ≤2 GHz

N# = 2

Band 5: >2 to 4 GHz

N# = 4

Spectral Purity

SSB Phase Noise (typical, 20 kHz offset, 500 MHz)

<-120 dBc/Hz

SSB Phase Noise (typical, 20 kHz offset, 1000 MHz)

<-116 dBc/Hz

SSB Phase Noise (typical, 20 kHz offset, 2000 MHz)

<-110 dBc/Hz

SSB Phase Noise (typical, 20 kHz offset, 3000 MHz)

<-104 dBc/Hz

SSB Phase Noise (typical, 20 kHz offset, 4000 MHz)

<-104 dBc/Hz

Residual FM (CW mode, 0.3-3 kHz BW, CCITT, rms, Phase Noise Mode 1)

Residual FM (Phase Noise Mode 2)

Harmonics (≤+4 dBm output level)

<-30 dBc

Nonharmonics (>3 kHz offset, <+7 dBm, 250 kHz to 1000 MHz)

<-65 dBc

Nonharmonics (>1000 MHz to 2000 MHz)

<-59 dBc

Nonharmonics (>2000 MHz)

<-53 dBc

Subharmonics (≤1000 MHz)

None

Subharmonics (>1000 MHz)

<-40 dBc

Frequency Modulation

Maximum Deviation

N x 10 MHz

Resolution

0.1% of deviation or 1 Hz, whichever is greater

Deviation Accuracy (1 kHz rate, dev.

<±(3.5% of FM deviation + 20 Hz)

FM1 (deviation = 100 kHz): 1 dB Bandwidth

dc/20 Hz to 100 kHz

FM1: 3 dB Bandwidth, typical

dc/5 Hz to 10 MHz

FM2: 1 dB Bandwidth

dc/20 Hz to 100 kHz

FM2: 3 dB Bandwidth, typical

dc/5 Hz to 1 MHz

Distortion (1 kHz rate, THD, dev. = N x 100 kHz)

<1%

Phase Modulation

Maximum Deviation

N x 90 radians

Resolution

0.1% of set deviation

Deviation Accuracy (1 kHz rate)

<±(5% of deviation + 0.01 radians)

Normal BW (deviation N x 90 rad)

PM1: dc to 100 kHz; PM2: dc to 100 kHz

High BW (N x 2pi rad)

PM1: dc to 1.5 MHz (typ); PM2: dc to 1 MHz (typ)

High BW (N x pi/2 rad)

PM1: dc to 4 MHz (typ); PM2: dc to 0.9 MHz (typ)

Distortion (1 kHz rate, THD, dev

<1%

Amplitude Modulation (fc>500 kHz)

Range (envelope peak ≤ max specified power)

0 to 100%

Resolution

0.1%

Rates (3 dB Bandwidth)

dc/10 Hz to 10 kHz

Distortion (1 kHz rate, THD, 30% AM)

<1.5%

Distortion (1 kHz rate, THD, 90% AM)

<4%

Accuracy (1 kHz rate)

<±(5% of setting + 1%)

Pulse Modulation

On/Off Ratio (≤3 GHz)

\>80 dB

On/Off Ratio (>3 GHz)

\>60 dB

Rise/Fall Times

150 ns, typical

Minimum Width (typical, ALC On)

2 µs

Minimum Width (typical, ALC Off)

0.4 µs

Pulse Repetition Frequency (typical, ALC On)

10 Hz to 250 kHz

Pulse Repetition Frequency (typical, ALC Off)

DC to 1.0 MHz

Level Accuracy (relative to CW)

± 0.5 dB, typical

Internal Pulse Generator (Squarewave only): Squarewave Rate

0.1 Hz to 50 kHz

Pulse Period

16 µs to 30 seconds

Width

8 µs to 30 seconds

Resolution

4 µs

Internal Modulation Source

Provides

FM, PM, and AM Modulation Signals and LF Out

Waveforms

sine, square, ramp, triangle, pulse, noise

Rate Range (Sine)

0.1 Hz to 50 kHz

Rate Range (Square, Ramp, Triangle)

0.1 Hz to 10 kHz

Resolution

0.1 Hz

> **Important:** Reverse power protection: 50 W from 250 kHz to 2000 MHz and 25 W above 2000 MHz to 4000 MHz; maximum DC voltage 50 V.

## About this Pre-Owned unit

This pre-owned unit is inspected and functionally verified in-house before it ships and is backed by our pre-owned warranty. To confirm its exact condition, firmware revision, installed options, or included accessories for your application before ordering, contact our Test Architects.

-   Warranty included
-   Functional verification included
-   Standard Calibration Upgrade Options: No Calibration Required, NIST Traceable, Z540.1 or ISO 17025 with Data, Z540.3 Guardbanding with Data.
-   Note that unnecessary accessories may not be included (contact Test Architect to confirm).

ValueTronics supplies both new and used test and measurement equipment. New units ship factory-sealed, exactly as received from the manufacturer; every used unit is inspected and functionally verified in-house at our 20,000 sq ft secure facility in Elgin, Illinois before it ships. Our Test Architects can help you select the condition, calibration, and configuration that fit your application.

**Please review the Manufacturer's Data Sheet to verify published specifications. Feedback on this webpage is always welcome — please reach out to your Test Architect at any time for questions or concerns. Thank you, we truly appreciate you being our customer.**

## Details

- **Price:** 0.0 USD - 560.0 USD
- **Vendor:** Agilent
- **Type:** Rf Gen
- **Tags:** Agilent, Agilent Keysight, Manufacturers, product_manual_group_1, Product_used, RF, Signal Generators

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| None | 0.00 USD | In stock |
| NIST Traceable | 455.00 USD | In stock |
| NIST Traceable with Full Data | 490.00 USD | In stock |
| ISO IEC 17025 Accredited | 560.00 USD | In stock |

## Images

- Agilent E4422A 250 kHz to 4000 MHz Analog RF Signal Generator (Pre-Owned)

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> Source: [ValueTronics](https://valuetronics.com/products/e4422a-agilent-rf-generator-used)
> Updated: 2026-07-06