Multiple channel analog output NI-PCI6711

I would like to output 8 simultaneous waveforms from
a NIPCI6713.  The demo, ao_waveform looks like a good
template to start from since it works fine (once the
buffer size was expanded).  Just to see if I could get more
than one channel to output at a time, I changed n_chan to 3
and increased the number of chanlist[] entries accordingly
and got the error

comedi_command_test: invalid argument

Any value of chanlist_len > 2 fails for me.
The value of scan_end_arg doesn't matter so long
as chanlist_len <=2.  I am missing something here.

Any suggestions on how to output more than one channel
would be appreciated.

David

Received on 2004-04-22Z20:39:26