03-10-2006 01:23 AM
I have your USB measurement device (ni usb 6008) and have one problem: When I turn on my computer, all the digital output pins on this measurement device are high – why? They must to stay low until I turn the program to control them and put them to the high level.
Thank you in advance.
Faculty for Mechanical Engineering
03-10-2006 06:20 AM
This device has an internal 4.7K pull up resistor, so ALL your DIO pins show up as default High. ( http://digital.ni.com/public.nsf/websearch/47B3CB1849258566862562B4000201DD?OpenDocument )
Looks you need to use a suitable pull down resistor.( see this link for choosinf pull down resistor http://digital.ni.com/public.nsf/allkb/018c0fb5acb0322186256f390051888c )
Hope this helps
03-13-2006 10:29 AM
03-13-2006 10:12 PM
Oh, I did not Know that about USB 6008's!
Thanks a Ton, GDE.
03-14-2006 03:11 AM