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The Agilent E4421A is an analog RF signal generator that delivers a continuous-wave and modulated output across a frequency range of 250 kHz to 3000 MHz, tunable with 0.01 Hz resolution. It produces a calibrated output level from +13 dBm down to -136 dBm up to 1000 MHz (and +10 dBm at higher frequencies) with 0.02 dB setting resolution into a 50 ohm output, making it a programmable source of RF stimulus from low frequencies into the low-microwave region.
A signal generator supplies the known, controllable input that a device or measurement under test requires — a stable carrier that can be set precisely in frequency and amplitude and, when needed, modulated. The E4421A supports amplitude, frequency, phase, and pulse modulation, with modulating signals drawn from an internal source, from two external inputs, or from a combination of sources, giving the operator a single instrument to generate both the carrier and its modulation.
ValueTronics stocks and holds its own test-and-measurement inventory in a 20,000 square foot secure warehouse at 1675 Cambridge Drive in Elgin, Illinois, so the instruments listed here are equipment we keep on hand. Pre-owned units are inspected and functionally verified in-house against the original manufacturer's specifications before shipment, while new units ship factory-sealed exactly as received from the manufacturer.
This instrument carries Agilent Technologies branding. Agilent was formed in 1999 when Hewlett-Packard spun out its test-and-measurement business under the Agilent name, and in 2014 that business was established as Keysight Technologies. Instruments from this lineage are therefore encountered under all three corporate names.
| Specification | Value |
|---|---|
| Frequency | |
| Frequency Range (Agilent ESG-3000A) | 250 kHz to 3000 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) | <±0.05 ppm, typical (0° to 55° C) |
| Line Voltage (Standard) | <±0.1 ppm (+5%, -10%) |
| Line Voltage (High Stability) | <±0.002 ppm, typical (+5%, -10%) |
| 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 |
| Resolution | 0.02 dB |
| Level Accuracy (+7 to -127 dBm, 250 kHz to 2 GHz, at 23±5°C) | ±0.5 dB |
| Level Accuracy (+7 to -127 dBm, 2 GHz to 3 GHz, at 23±5°C) | ±0.9 dB |
| Level Accuracy (<-127 dBm, 250 kHz to 2 GHz) | ±1.5 dB |
| Level Accuracy (<-127 dBm, 2 GHz to 3 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 3000 MHz) | 25 Watts |
| Max DC Voltage | 50 V |
| SWR (typical, 250 kHz to 2000 MHz) | <1.4:1 |
| SWR (typical, >2000 to 3000 MHz) | <1.9:1 |
| Output Impedance | 50 ohms |
| Spectral Purity | |
| SSB Phase Noise (typical, 20 kHz offset, 500 MHz) | <-120 dBc/Hz |
| SSB Phase Noise (1000 MHz) | <-116 dBc/Hz |
| SSB Phase Noise (2000 MHz) | <-110 dBc/Hz |
| SSB Phase Noise (3000 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 output level, 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; 3 dB Bandwidth, typical: dc/5 Hz to 10 MHz |
| FM2 (deviation = 100 kHz) | 1 dB Bandwidth: dc/20 Hz to 100 kHz; 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) |
| PM1 Normal BW | N x 90 rad, dc to 100 kHz |
| PM2 Normal BW | N x 90 rad, dc to 100 kHz |
| PM1 High BW | N x 2 pi rad, dc to 1.5 MHz (typ); N x pi/2 rad, dc to 4 MHz (typ) |
| PM2 High BW | N x 2 pi rad, dc to 1 MHz (typ); N x pi/2 rad, 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 |
| Rise/Fall Times | 150 ns, typical |
| Minimum Width (ALC On) | 2 µs |
| Minimum Width (ALC Off) | 0.4 µs |
| Pulse Repetition Frequency (ALC On) | 10 Hz to 250 kHz |
| Pulse Repetition Frequency (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 | |
| 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 |
| Frequency Accuracy | 0.005% |
| Swept Sine Mode (Frequency, Phase Continuous) Operating Modes | Triggered or Continuous Sweeps |
| Swept Sine Frequency Range | 0.1 Hz to 50 kHz |
| Swept Sine Sweep Time | 1 ms to 65 seconds |
| Swept Sine Resolution | 1 ms |
| Dual Sinewave Mode Frequency Range | 0.1 Hz to 50 kHz |
Important: Reverse power protection: 50 W from 250 kHz to 2000 MHz and 25 W from above 2000 MHz to 3000 MHz, with a maximum DC voltage of 50 V at the output.
Important: Level accuracy degrades by 0.02 dB/°C over the full temperature range and by 0.3 dB above +7 dBm.
Important: Simultaneous modulation: all modulation types may be enabled simultaneously except FM with PM, and AM with Burst envelope; AM, FM, and PM can sum simultaneous inputs from any two sources (INT, EXT1, EXT2), and any given source may be routed to only one activated modulation type.
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.
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.
Model No
Agilent
Condition
Pre-Owned
Manufacturer
Agilent
Rf_gen_freq
250 kHz to 3000 MHz
30+ Years in Business
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30+ Years in Business
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Sell Test Equipments
Knowledgeable Staff
On-site Lab
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