您好，請問您是使用Agilent82357以及一條NI GPIB來控制兩台儀器嗎？如果是的話那麼在NI Support中有提到解決方案
http://digital.ni.com/public.nsf/websearch/3B3626D9C1F999218625694200791AD7?OpenDocument
節錄其中兩段所提供不同的解決方案：
Measurement & Automation Explorer 4.x
To use the VISA Passport editor in MAX 4.x, select Tools » NI-VISA » VISA Options... Once the VISA Options screen appears, select Passports in the tree view (My System » General Settings » Passports). Enable the NiVisaTulip.dll by placing a check mark in the box beside it and then click on the Save button. You will need to restart MAX for the setting to take effect. Once MAX is restarted, you will be able to access your third-party GPIB boards and give them VISA aliases under My System » Devices and Interfaces » Miscellaneous VISA Resources.
LabVIEW
Uninstall NI-VISA, and install HP-VISA. Use the VISA functions in LabVIEW to access the HPIB board.
By default, a VISA resource name constant or control will only allow devices defined in Measurement & Automation Explorer (MAX). Since HPIB boards using HP-VISA will not be found by MAX, you must right-click on the control or constant and select "Allow Undefined Names." This will allow you to manually enter the address of the instrument. Then, you must get the proper board and instrument address from the Agilent/HP I/O configuration utility. Once you have that information, type the resource name according to the standard convention GPIBx::y::INSTR, where x is the board index number (usually 0) and y is the primary address of the instrument.
希望對您有幫助
<補上Agilent對於這類問題的解答>
http://www.home.agilent.com/agilent/editorial.jspx?cc=TW&lc=cht&ckey=488498&nid=-34193.426029.02&id=...
