无法将Agilent 34970A连接到计算机

嗨，我无法将Agilent 34970A连接到计算机。
我通过RS-232将仪器连接到COM1。
在Connection Expert中，当我点击全部刷新时，它无法识别仪器。
在COM1下，它报告“存在通信故障”。
如果我查看详细信息，则会显示“错误：仪器无法返回IDN字符串”。
我相信我的插头和物理连接是正确的。
当我向仪器发送命令时（通过Connection Expert），无论哪个命令，它都会在前面板上短暂闪烁“Mux T / C”，并且“RMT”变为啮合状态。
该仪器显然是对COM1上的某些内容做出回应。
但是，如果我尝试读取命令的响应，它总是超时。
我开始遇到这些问题，因为我从运行Windows 95的旧计算机升级到使用最新版BenchLink的新计算机。
在较旧的机器上，它通信很好。
我的连接专家版是16.2.15823.0。
我做错了有什么简单或愚蠢的事吗？
编辑：我能够使用适当的波特率，停止位和流量控制等终端（在我的情况下为Hyperterminal）连接到34970A（所有这些都仍在出厂设置）。
当我输入“* IDN？”
我从设备上得到了适当的回复。
但是，出于某种原因，我无法让Connection Expert或Bench Logger识别它。
:(编辑：Patrick Lu于2012年3月23日9:55 PM编辑：Patrick Lu于2012年3月23日下午9:58



     以下为原文

  Hi,

I am having trouble connecting my Agilent 34970A to the computer. I have the instrument connected to COM1 via RS-232.
In Connection Expert, when I hit refresh all, it fails to identify the instrument. Under COM1, it reports that "There was a communication failure". If I view details, it displays "Error:The instrument failed to return an IDN string".

I am confident that my plugs and physical connections are correct. When I send commands to the instrument (through Connection Expert), no matter which command, it briefly flashes "Mux T/C" on its front panel, and "RMT" becomes engaged. The instrument is clearly responding to something on COM1. However, if I try to read the response to the command it always times out.  

I started having these problems because I upgraded from an older computer running Windows 95 to a new one with the latest version of BenchLink. On the older machine, it communicates just fine.

My connection expert version is 16.2.15823.0. Is there something simple or stupid that I'm doing wrong?

EDIT: I'm able to connect to the 34970A using a terminal (Hyperterminal in my case) using the appropriate baud rate, stop bits, and flow control, etc (all still at factory settings). When I type "*IDN?" I get an appropriate reply from the device. However, for some reason, I just can't get the Connection Expert or Bench Logger to recognize it. :(

Edited by: Patrick Lu on Mar 23, 2012 9:55 PM

Edited by: Patrick Lu on Mar 23, 2012 9:58 PM