Keysight (Agilent) E4438C

| Attribute | Value |
|---|---|
| Frequency Range | 250 kHz to 4 GHz |
| Frequency Resolution | 0.01 Hz |
| Harmonics | < -30 dBc (typ.) |
| Switching Speed | < 9 ms (spec.) |
| Interfaces | GPIB, LAN, RS-232 |
| 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 |
| Dimensions | 426 × 133 × 432 mm |
| 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 (Agilent) E4438C 250 kHz - 4GHz Signal Generator Options:
- E4438C - 501 - 250 kHz to 1 GHz
- E4438C - 502 - 250 kHz to 2 GHz
- E4438C - 503 - 250 kHz to 3 GHz
- E4438C - 504 - 250 kHz to 4 GHz
- E4438C - 506 - 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 Signal Generator features a frequency range from 250 kHz to 4 GHz, delivering output power up to +17 dBm. It supports RF modulation bandwidths up to 160 MHz and a versatile array of modulation types including FSK, MSK, PSK, QAM, custom I/Q, AM, FM, and pulse. With step and list sweep capabilities for frequency and power, it’s ideal for advanced RF testing scenarios.
This signal generator enables precise signal creation and testing for complex RF systems, providing reliable performance across a wide range of applications in research, development, and manufacturing.
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 4 GHz (Opt. 504)
- 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)





