The MC PCI DIO24 is a very versatile card. It can be used as inputs or outputs. The lack of pull-up/down resistors indicates the use was not specified when the board was purchased, or that it was purchased as an output card. You'll see three rows of ten holes each. You can get SIPs from Measurement Computing. You want a nine pin sip. Notice that one end of the row is labelled HI and the other end is labelled LO. The SIPs have one end labelled as common. You orient the SIPs so the common pin goes into the HI or LO hole depending on if you want pull up or pull down. (Pull up is most common.) So that uses nine of the ten holes. Leaving it open can yield unpredictable results when used as an input card, as you have already found out. While you can get SIPs at Digi-Key and the like, I suggest getting them from Measurement Computing to insure you get the right ones, as spacing and number of pins may vary from other vendors.
HTH, Michael On Thu, Aug 16, 2012 at 7:38 PM, Wayne Merricks <[email protected]> wrote: > Cheers for the reply, thats one set of problems dealt with at least. The MC > PCI DIO24 actually suggests buying 8 2.2k ohm SIP packages, theres actually > free space on the PCB to what appears to be solder them in place. Its an odd > way of doing it but I see the logic. > > I think my Rivendell issue is mostly because I'm not running caed etc as > root. I'll reconfigure the box and temporarily switch of jack to test that > once I'm back at work. > > > -----Original Message----- > From: [email protected] on behalf of Sébastien > Leblanc > Sent: Fri 17/08/2012 01:22 > To: User discussion about the Rivendell Radio Automation System > Subject: Re: [RDD] Newbie GPIO question > > Sorry for the multiple responses... > > As for what you should do, you should use physical resistors (that > would be my prefered solution) as software switches can sometimes, > accidentally or for no apparent reason, get reset and then you get > erratic behaviour. Those pull-(up|down) resistor software switches > actually enable real, internal resistors inside the chips. Using > physical resistors outside of the chips will not affect wether the > internal ones are enabled or not, so you are better off using physical > resistors. > > -- > Sébastien Leblanc > _______________________________________________ > Rivendell-dev mailing list > [email protected] > http://lists.rivendellaudio.org/mailman/listinfo/rivendell-dev > > > ####################### > Scanned by MailMarshal > ####################### > > ############ > > Attention: > > The information contained in this message is confidential and intended > for the addressee(s) only. If you have received this message in error > or there are any problems, please notify the originator immediately. > The unauthorised use, disclosure, copying or alteration of this message > is strictly forbidden. Christian Vision or any of its subsidiaries will > not be liable for direct, special, indirect or consequential damages > arising from alteration of the contents of this message by a third party > or as a result of any virus being passed on. Please note that we reserve > the right to monitor and read any e-mails sent or received by the > company under the Telecommunications (Lawful Business Practice) > (Interception of Communications) Regulation 2000. Christian Vision is > registered in England as a limited company 2842414 and as a charity > 1031031 > > ############ > > _______________________________________________ > Rivendell-dev mailing list > [email protected] > http://lists.rivendellaudio.org/mailman/listinfo/rivendell-dev > _______________________________________________ Rivendell-dev mailing list [email protected] http://lists.rivendellaudio.org/mailman/listinfo/rivendell-dev
