新的Agilent E4438C ESG矢量信號發生器通過提供優異的基帶信號而達到了新的性能水平。它具有寬RF調制帶寬、快采樣率和大存儲器，這是評估2.5G、3G和寬帶無線通信系統及部件的關鍵要求。此外，ESG矢量信號發生器還提供達6GHz的頻率覆蓋，能符合無線局域網的特殊要求。
信號發生器可提供模擬調制、采用標準和定制制式的數字調制、優異的電平精度和頻譜純度，以及極便于配置的體系結構，因而是一般研制開發、制造和查錯應用的理想設備。
Frequency options
501 1 GHz frequency range
502 2 GHz frequency range
503 3 GHz frequency range
504 4 GHz frequency range
506 6 GHz frequency range [requires option UNJ, includes mechanical attenuator]
UNB High output power with mechanical attenuator [included with 506]
UNJ Enhanced phase noise performance [includes 1E5]
1E5 High-stability time base
1EM Moves all front panel connectors to rear
003 ESG digital output connectivity with N5102A Basebａnd Studio digital interface module
004 ESG digital input connectivity with N5102A Basebａnd Studio digital interface module
601 Internal basebａnd generator with 8 MSa and digital bus capability [40 MB] of memory
602 Internal basebａnd generator with 64 MSa and digital bus capability [320 MB] of memory
005 6 GB internal hard drive
UN7 Internal bit-error-rate analyzer
300 GSM/EDGE base station loopback BERT
