E4418B RF Pwr仪表固件更新问题

因此，我的“新人”炸了两个旧的功率传感器...公司购买了Agilent N8481A Pwr传感器（1200美元ea），这应该与我们的功率计E4418B配合使用。
我需要将我的固件更新到最新版本才能使用它们，已经升级了DSP板（523美元），所以这就是问题 - 即使E4418B有一个RS-232（我们根本不使用GPIB）连接器
背部;
没有菜单选择可以通过GPIB选择它，即使手册说有。
我不想在GPIB PCI板和电缆上花费更多，只是为了简单的固件更新。
安装的固件是A1.03.00，我需要最新的A1.09.01手册说菜单=系统/输入 - >远程接口 - >选择接口，应该让我在HPIB或Serial之间进行选择。
我的E4418B而不是显示远程接口显示HPIB。
任何想法或帮助将不胜感激



     以下为原文

  So my "new guys" fried two of my old power sensors... Company purchased Agilent N8481A Pwr Sensors($1200 ea), which should work with our power meter E4418B. I need to update my firmware to latest version for them to work, already upgraded the DSP board ($523), so here is the problem-

Even though the E4418B has an RS-232 (we don't use GPIB at all) connector on back; there is no menu selection to choose it over GPIB, even though the manual says there is. I don't want to spend more on a GPIB PCI board and cable just for a simple firmware update.

Firmware installed is A1.03.00 and I need the latest one A1.09.01

The manual says under menus = System/Input -> Remote Interface -> Select Interface, should let me choose between HPIB or Serial. My E4418B instead of displaying Remote Interface shows HPIB.


Any ideas or help would be appreciated