- From: Caleb Tennis <caleb_at_aei-tech.com>
- Date: Thu, 6 Feb 2003 10:07:01 -0500
On Thursday 06 February 2003 09:53, Eric Vaandering wrote: > PCI > 8 bits Digital output > 3 analog outs > 4 analog ins > reasonable cost Unfortunately in my experience it seems like Analog Outs are the driving factor of cost. The jump from 0 to 2 analog outs seems to tack on about a 150% increase in the board price. I imagine 4 analog outs would be a bit much in price. The company I work for is mostly driven by price, so I can think of a few "hacks" that might get you where you want: Some good cards to use, particularly with comedi, are NI's PCI-6023 (or the 6024 which has Analog Outs). Also, check out measurement computing's PCI-DAS08 and DAS16. A 24 bit digital IO board is relatively cheap. You can pretty easily build a D/A circuit using the 24bit digital outs and some op amps or other ICs. That might be one way to get an extra analog out. You may also want to consider buying a DAQ card that has no analog outs, then buying a 4 channel analog out board and running both devices. We use Automation Direct's "Field IO" for our analog outs since you can scale many output channels for moderate price. It's not a comedi thing, but another option you may want to consider. Hope that helps, Caleb
Received on 2003-02-06Z15:07:01