Hi Vern, >In this instance, the analog delay module came out of an S-Com 5000 >controller; and the contributor told me what the pinouts were supposed >to be. Although I would prefer to confirm things with proper >schematics, I have made the connecting cable according to the >information he provided. > >By chance would you happen to have a schematic and documentation for >this module? At this point, I do not know what the pots are for; >although I would suspect that one (of the three) is the delay time. >The PCB has "S-COM Audio Delay Module" in the silkscreen on the >componend-side; and "J703021" in the etch on the solder-side.
Our resource page is _http://www.scomcontrollers.com/resource.shtml_ (http://www.scomcontrollers.com/resource.shtml) . You'll find the schematics for a number of S-COM products, including the original ADM and its replacement, the Digital ADM. Both are out of production. I should mention that the original ADM used two of the infamous Reticon bucket-brigade analog shift registers in cascade. These are not quiet parts, and you will notice an increased background hiss from the lowered signal-to-noise ratio when the module is in-circuit. Today's digital ADMs have far better ratios, in case you're inclined to invest in a replacement. Don't adjust the pots nearest the Reticon parts. They set the bias on the Reticons and are best adjusted with a distortion analyzer. The pot nearest the 7555 timer is the delay adjustment. 73, Bob Bob Schmid, WA9FBO, Member S-COM, LLC PO Box 1546 LaPorte CO 80535-1546 970-416-6505 voice 970-419-3222 fax www.scomcontrollers.com ************************************** See what's free at http://www.aol.com.
