You might want to try pin 14 instead of pin 8. I just got done interfacing a controller to a GM300 and couldn't get pin 8 to work but pin 14 did.
The RSS indicates both pin 8 and 14 are PL/DPL/CSQ detect but only pin 14 seems to function properly. Randy > It depends a bit on which logic board you have, but > pin 8 on the accessory connector is either an > open-collector transistor which requires an external > pull-up resistor, or a logic line with a 4.7k resistor > to +5V in the radio. > > You then have to program the radio for COR on pin 8, > and choose whether you want it to be active high or > active low. You would set the CAT controller to match > the sense of the COR line. The COR line just indicates > a carrier; it does not care if the proper PL/DPL code > accompanies that carrier. On some radios, you can > choose that option in the RSS. > > On some radios, you can program other accessory pins > for the COR signal; it depends on the logic board. > > In either case, I'd recommend you add a 4.7k pull-up > resistor on the COR pin either inside the radio or > inside the CAT controller. My CAT200 controllers have > provisions for just such a pull-up; maybe the 1000 > does as well. > > Without knowing how you're wiring the two together, I > can't tell you if you've done it in a way that will > work or not. > > Bob M. > ====== > --- "Tony L." <[EMAIL PROTECTED]> wrote: > >> We're attempting to set up a repeater using 16 >> channel GM300's and an >> external controller (a CAT 1000). >> >> We've done this before twice, but seem to be stumped >> this time because >> we can't get either the receiver radio or link radio >> to produce the >> right voltage swing the controller is looking for in >> connection with >> COR. We've tried 3 radios but none will produce the >> necessary voltage >> swing. >> >> What have we missed? Programming or wiring issue? > > > > ____________________________________________________________________________________ > The fish are biting. > Get more visitors on your site using Yahoo! Search Marketing. > http://searchmarketing.yahoo.com/arp/sponsoredsearch_v2.php >
