how to connect to instruments through RS232 and GPIB

[Premashis]

Hi,

  I want to connect SR830 Lock-in amplifier and Agilent function generator using GPIB and RS232 cable respectively. When I connected the instruments and I look in the NI-MAX, it seems labview is not recognizing the interfaces (attched screenshot). Also I have connceted with the DAQ borad and I could not getting any option for VISA dropdown menu for it. I have also connected another function generator using USB and LV is recognising it and it is  working well. But not the other ones. I have installed NI-488.2 (version 3.1.1). Is anything else required? My Labveiw version is 2012 SP1.

Thanks,

Premashis

[Dennis_Knutson]

You've got a com port recognized. Is that where you have the function generator? The instrument itself will not be recognized.

Why type of GPIB controller are you using? One from NI?

[Premashis]

No, the com port is connected to the lock-in amplifier. Yes, I  am using GPIB controller from NI. 

Premashis

[JÞB]

OK the DAQ board will not show up in VISA.  If its a DAQmx device it will show up in DAQmx.   VISA is VISA and DAQmx is DAQmx, two different APIs.

[Tortu]

Greetings Premashis

What happens if you connect only the interfaces to the computer? What is your operating system? What version of NI-VISA do you have installed in your computer? Have you tried Resetting MAX Configuration Data? Do the interfaces show up in the Device Manager? Can you do a serial loopback test?

Here are some other links that might be of use:

http://digital.ni.com/public.nsf/allkb/8311FFF18B5308ED86256C0200653B3B?OpenDocument

http://digital.ni.com/public.nsf/allkb/353A43396C88799286256D88007C2EC0?OpenDocument

http://msdn.microsoft.com/en-us/library/windows/hardware/ff557272(v=vs.85).aspx

http://digital.ni.com/public.nsf/allkb/0819391CA91B3EB38625731D00024649

Let us know if you need more assistance or if you managed to solve the problem. Have a nice day.

Warm Regards,

[Premashis]

Hi Luis,

  Its the same whether I connect the port only to computer or to the instrument. I am using a Windows 7 and my NI-VISA version is 5.4.

I have tried  resetting MAX configuration data but without any help. The interfaces does not show up in the device manager.

Thanks,

Premashis

[Premashis]

I fixed the problem, it seems it was a conncetion problem. I reinstalled the cards and GPIB/ NI-PCI appear in the MAX. But still I do not see the RS-232 port in the MAX. Do I need to install any additional driver for that?

thanks,

Premashis

[Dennis_Knutson]

Your very first post has an image of MAX with the com port listed. Are you now saying you are using an additional com port?