Different voltage for HSDIO Channel

[Nexfrontier]

Hi,
 
I am using HSDIO 6552 and trying to assign different logic to different channel.
Channel 0: 1.5v High, 0v Low
Channel 1-19: 3.3v High, 0v Low
 
So, I put the code looked like this:
<a href="http://elitepicturehost.com/viewpic.php?code=f4a670afde1140c37a6ee655b69d2785" target="_blank">http://elitepicturehost.com/viewpic.php?code=f4a670afde1140c37a6ee655b69d2785</a>
&nbsp;
And it return the error:
&nbsp;
Error -1074115691 occurred at Property Node (arg 1) in DemoMain.vi
Possible reason(s):
DAQmx Error -200106 occurred:Measurements: Property must have the same value for all channels on this device.
Property: Data Voltage High LevelCorresponding Value:&nbsp; 3.300000Supported Values: 1Device: Dev1
Status Code: -200106Message Edited by Nexfrontier on 05-25-2008 11:03 PM

[Ryan M]

Nexfrontier, The 6551/2 device only supports voltage levels on a per device basis.&nbsp; That is, if you set VOH and VOL to custom levels, those levels are applied to all channels.&nbsp; If you require a second VOH level, you can use cycle-cycle tristate which turns the channel off when driving "Z" allowing you to use an external pull up.&nbsp; Your edge rate will be a function of your pull up resistor and your interconnect which could limit your toggle rate.

[x***@no.email]

:smileyhappy:
Thanks a lot ..