Keysight (Agilent)
Keysight (Agilent) E4437B
250kHz-4GHz RF Signal Generator
250 kHz to 4 GHz Frequency Range
-136 dBm to +20 dBm Output Power Range
0.001 Hz Frequency Resolution
AM, FM, PM, Pulse, I/Q, Digital Modulation (QPSK, QAM, CDMA, W-CDMA, GSM, EDGE) Modulation Types
Type-N Female (50 Ohm) RF Connector Type

| Attribute | Value |
|---|---|
| Frequency Range | 250 kHz to 4 GHz |
| Output Power Range | -136 dBm to +20 dBm |
| Frequency Resolution | 0.001 Hz |
| Modulation Types | AM, FM, PM, Pulse, I/Q, Digital Modulation (QPSK, QAM, CDMA, W-CDMA, GSM, EDGE) |
| RF Connector Type | Type-N Female (50 Ohm) |
| Phase Noise | -122 dBc/Hz at 20 kHz offset (1 GHz carrier) |
| Waveform Memory | Up to 64 MB (with optional Arbitrary Waveform Generator) |
| AWGN (Additive White Gaussian Noise) | Available as optional feature for simulating real-world signal conditions |
| Interface/Connectivity | GPIB (IEEE-488), RS-232, LAN (optional) |
| Power Requirements | 100–240 VAC, 50/60 Hz, 175 W maximum |
Keysight Technologies E4437B Options:
- E4437B - OB0 - Deletes the standard manual set
- E4437B - OB1 - Adds extra manual set
- E4437B - OBV - Adds service documentation, component level
- E4437B - OBW - Adds service documentation, assembly level
- E4437B - OBX - Adds service documentation, assembly and component level
- E4437B - 1CM - Adds rack mount kit, part number 5063-9214
- E4437B - 1CN - Adds front handle kit, part number 5063-9227
- E4437B - 1CP - Adds rack mount kit with handles, part number 5063-9221
- E4437B - 1E5 - Adds high-stability timebase
- E4437B - 1E6 - High-performance pulse modulation
- E4437B - 1EM - Moves all front panel connectors to rear panel
- E4437B - UN5 - Adds multichannel CDMA personality
- E4437B - UN7 - Adds internal bit-error-rate analyzer
- E4437B - UN8 - Adds real-time I/Q baseband generator with TDMA standards and 1 Mbit of RAM
- E4437B - UN9 - Adds 7 Mbits of RAM to Option UN8
- E4437B - 100 - Adds multichannel W-CDMA personality
- E4437B - 101 - Adds multichannel cdma2000 personality
- E4437B - 300 - Basestation BERT extension for Option UN7 (internal bit-error-rate analyzer)
- E4437B - UNA - Alternate timeslot power level control
- E4437B - UNB - Adds higher power with mechanical attenuator
- E4437B - UND - Adds internal dual arbitrary waveform generator
- E4437B - H99 - Improves ACP performance for TETRA, CDMA, and W-CDMA
- E4437B - W50 - Adds additional warranty for a total of five years
| Model | E4437B |
|---|
The Keysight (Agilent) E4437B RF Signal Generator covers 250 kHz to 4 GHz with advanced phase noise and up to 35 MHz RF modulation bandwidth, ideal for R&D and manufacturing use.
It supports digital modulation formats including FSK, MSK, PSK, QAM, with optional waveform generators, 40 MHz sample rate, and 14-bit I/Q resolution.
Testwall can supply the used Keysight (Agilent) E4437B, fully tested. With expert support and global delivery, Testwall ensures high-performance instrumentation with unmatched reliability and service quality. Please contact us directly if you need calibration or repair of the Keysight (Agilent) E4437B.





