Keysight (Agilent)
Keysight (Agilent) E4438C
250 kHz - 6GHz Signal Generator
250 kHz to 6 GHz Frequency Range
-136 dBm to +20 dBm (CW), varies by frequency Output Power Range
0.001 Hz Frequency Resolution
AM, FM, PM, pulse modulation, I/Q modulation, digital modulation (GSM, CDMA, W-CDMA, LTE, and more) Modulation Types
Up to 1 GB internal baseband waveform memory (with optional upgrades) Waveform Memory

| Attribute | Value |
|---|---|
| Frequency Range | 250 kHz to 6 GHz |
| Output Power Range | -136 dBm to +20 dBm (CW), varies by frequency |
| Frequency Resolution | 0.001 Hz |
| Modulation Types | AM, FM, PM, pulse modulation, I/Q modulation, digital modulation (GSM, CDMA, W-CDMA, LTE, and more) |
| Waveform Memory | Up to 1 GB internal baseband waveform memory (with optional upgrades) |
| Baseband Generator | Internal dual arbitrary waveform generator (ARB) with up to 100 MSa/s sample rate |
| Phase Noise | -138 dBc/Hz at 1 GHz carrier, 20 kHz offset (typical) |
| RF Connector | Type-N female (50 ohm) |
| Interface/Connectivity | GPIB, LAN (10/100Base-T), USB, RS-232 |
| Power Requirements | 100–240 VAC, 50/60 Hz, 350 W maximum |
Keysight Technologies E4438C Options:
- E4438C - 501 - Frequency range 250 kHz to 1 GHz
- E4438C - 502 - Frequency range 250 kHz to 2 GHz
- E4438C - 503 - Frequency range 250 kHz to 3 GHz
- E4438C - 504 - Frequency range 250 kHz to 4 GHz
- E4438C - 506 - Frequency range 250 kHz to 6 GHz
- E4438C - 001 - Internal baseband generator (8 Msamples memory)
- E4438C - 002 - Internal baseband generator (32 Msamples memory)
- E4438C - 005 - 6 Gbyte non-volatile waveform storage
- E4438C - UNB - High output power with mechanical attenuator
- E4438C - UNJ - Enhanced phase noise performance
- E4438C - 1E5 - High-stability time base
- E4438C - UN7 - Internal bit-error-rate analyzer
- E4438C - 300 - GSM/EDGE basestation loopback BER test capability
- E4438C - 1EM - Move all front panel connectors to rear
- E4438C - 400 - 3GPP W-CDMA (FDD) signal generation firmware personality
- E4438C - 401 - cdma2000 and IS-95-A signal generation firmware personality
- E4438C - 402 - TDMA (GSM/EDGE/NADC/PDC/PHS/TETRA/DECT) signal generation firmware personality
- E4438C - 403 - Calibrated noise signal generation firmware personality
- E4438C - 409 - GPS signal generation firmware personality
- E4438C - 404 - 1xEV-DO Signal Studio software personality
- E4438C - 405 - 802.11b WLAN Signal Studio software personality
- E4438C - 406 - Bluetooth Signal Studio software personality
- E4438C - 408 - Enhanced multitone Signal Studio software personality
- E4438C - 410 - 802.11a WLAN Signal Studio software personality
- E4438C - 411 - TD-SCDMA (TSM) Signal Studio software personality
| Model | E4438C |
|---|
The Keysight (Agilent) E4438C ESG Vector Signal Generator offers high-performance RF signal generation with advanced baseband capabilities, ideal for complex wireless testing. Covering frequencies from 250 kHz to 6 GHz with 0.01 Hz resolution, it supports +17 dBm output power and a 160 MHz RF modulation bandwidth.
This flexible platform includes an internal baseband generator with 80 MHz bandwidth, real-time I/Q, and 64 MSa playback memory. It supports a wide range of modulations—AM, FM, ØM, pulse, ASK, FSK, PSK, QAM—and signal formats such as GSM, WLAN, W-CDMA, and DVB. Equipped with 10BaseT LAN, GPIB, SCPI, and IVI-COM drivers, it's fully programmable and backward-compatible.
Testwall can supply the used Keysight (Agilent) E4438C, 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) E4438C.





