Closed Circuit, We have setup many Catapult system to date they are used in many Liqour store locations here local. put the Geo data capture in the serial mode. Install it inline with the DB-9 connector. Complete the rest of the set up as you have.Look at your cables make sure your cables are straight thru. Some of the serial cables cross over pin 2 and 3 for the TX and RX. This application we see is the Epson im320 POS with TM88III or 6000 reciept printer. The 25 pin port I have not had much luck with. It is true Geovision has not created the interface list or instructions. Trial and error is what we have done to over come this. We have been succesful with serial output PC based registers. We are working on interfaces for the standalone registers as well.
I should have added the output port from the POS is 9 pin and they use a cable to convert to 25 pin. 9 pin straight thru cable from pos to data capture, use the existing 9-25 cable from capture to printer.