Keysight (Agilent)
Keysight (Agilent) E4438C
250 kHz - 6GHz Signal Generator
0.01 Hz Frequency Resolution
< -30 dBc (typ.) Harmonics
< 9 ms (spec.) Switching Speed
GPIB, LAN, RS-232 Interfaces
426 × 133 × 432 mm Dimensions

| Attribute | Value |
|---|---|
| Frequency Resolution | 0.01 Hz |
| Harmonics | < -30 dBc (typ.) |
| Switching Speed | < 9 ms (spec.) |
| Interfaces | GPIB, LAN, RS-232 |
| Dimensions | 426 × 133 × 432 mm |
| Frequency Range | 250 kHz to 1, 2, 3, 4 or 6 GHz |
| Output Power | -136 to +13 dBm at 1 GHz (typ.) |
| SSB Phase Noise | -118 dBc/Hz at 1 GHz, 20 kHz offset (typ.) |
| Modulation | AM, FM, ΦM, pulse, I/Q, wideband AM, AWGN |
| Level Accuracy | ±0.5 dB to 2 GHz, ±0.7 dB to 4 GHz, ±0.8 dB to 6 GHz (spec.) |
| Modulation Bandwidth | 100 MSa/s internal arbitrary, 8 MSa or 64 MSa (depending on configuration) |
| Sweep Modes | step sweep, list mode, power sweep |
| RF Output Connector | Type-N female, front panel |
| Weight | < 16 kg |
Available configurations
| Model | Frequency range | Configuration |
| E4438C-501 | 250 kHz to 1 GHz | Vector signal generator |
| E4438C-502 | 250 kHz to 2 GHz | Vector signal generator |
| E4438C-503 | 250 kHz to 3 GHz | Vector signal generator |
| E4438C-504 | 250 kHz to 4 GHz | Vector signal generator |
| E4438C-506 | 250 kHz to 6 GHz | Vector signal generator |
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
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.
Options and configurations
- Frequency Range: 250 kHz to 1, 2, 3, 4 or 6 GHz (Opt. 501/502/503/504/506)
- Output Power: -136 to +13 dBm (+17 dBm with Opt. UNB) at 1 GHz (typ.)
- SSB Phase Noise: -118 dBc/Hz at 1 GHz, 20 kHz offset (typ.); < -130 dBc/Hz with Opt. UNJ (-134 dBc/Hz typ.)
- Modulation Bandwidth: 100 MSa/s internal arbitrary, 8 MSa (Opt. 601) or 64 MSa (Opt. 602)
- Timebase Aging: < ±1 ppm per year standard, < ±0.1 ppm per year with Opt. 1E5 or UNJ
- RF Output Connector: Type-N female, front panel (rear panel with Opt. 1EM)





