USB devices show up in MAX but not with nidaqmx base

[Fusselpelusa]

Hi,
I am using one 6501 and two 6008 to control photomultipliers. I installed Nidaq successfully but could not find the nice program, that enables me to use the devices right away without programming. I knwo that in NIdaqmx base, these interactive vi's are present, hence I downloaded this software and sure enoiugh, I found them in examples. But my devices are not recocgnized by these vi's. Is there a problem installing NIdaqmx and NIdaqmxbase at the same time? If so I will uninstall NIdaqmx as later on, I am planign to switch to a linux machine and woudl not want to rewrite all codes.
Or do I perhaps miss something? The weird thing is, tha the devices are there in MAX, self test is successful and with signal express I can access the data (I checked one line). But I'd like to use this nice USB-600x interactive control vi (as wellas the 6501).
Perhaps I missed where this is found in Nidaqmx?
Hope you can help
Thanks
Thomas


Message Edited by Fusselpelusa on 01-22-2008 04:36 PM

[Fusselpelusa]

OK,
I uninstalled first max and I could see the devices. Looks like mx and mxbase don't like each other. However, as I have to devide some of the lines to have a nice user interface I decided to go with mx and uninstaleld mx base, instaleld mx again and am trying to programm it by myself. One thing I realized is that I am getting -5V TTL from these devices. Hm is there a way to change this to +5V?
Thanks
Thomas

[Mark_E]

Hi Thomas,

You have to configure each device to be used with either DAQmx or DAQmx Base for any given time. The following KnowledgeBase (KB) outlines how to switch between the two drivers.

Switching a USB-6008, 6009, or 6501 Between NI-DAQmx and NI-DAQmx Base

The DAQmx Base examples are found in the system path outlined in the following KB, and it’s very similar to find the DAQmx examples.

Where Can I Find NI-DAQmx Base Examples?

Be aware of the firmware updates as mentioned in these KBs (different versions):

Using a USB-6008 / 6009 / 6501 in MAX, and Switching Firmware Between NI-DAQmx and NI-DAQmx Base

Using USB-6008, USB-6009 and USB-6501 Devices With Different Versions of NI-DAQmx Base

Finally, the logic level is defined by TTL itself, but to invert the logic levels, include a “not” function. I’ve taken the shipping example “Write Dig Chan” and included the “not” function.