新的Agilent E4438C ESG矢量信号发生器通过提供优异的基带信号而达到了新的性能水平。它具有宽RF调制带宽、快采样率和大存储器，这是评估2.5G、3G和宽带无线通信系统及部件的关键要求。此外，ESG矢量信号发生器还提供达6GHz的频率覆盖，能符合无线局域网的特殊要求。

信号发生器可提供模拟调制、采用标准和定制制式的数字调制、优异的电平精度和频谱纯度，以及极便于配置的体系结构，因而是一般研制开发、制造和查错应用的理想设备。

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