A “smart GPS cable” supplies NMEA data. The older S-H plotters used an actual RF antenna. The CP155C uses a smart antenna, so you can feed NMEA data into that port if you have a cable. To use the other NMEA port, you likely need to go through the menus and enable that input if that is a choice. You might be able to get S-H tech support to help. 12VDC Power and NMEA Cable Pin Wire Color Description Connection Example 1 Black Battery Ground Connect to battery ground and Black wire of GPS Antenna 2 Red Battery Positive Connect to Battery Positive and Red wire of GPS Antenna 3 Green NMEA Common Common for NMEA devices 4 Blue VHF Input Conncect to VHF with DSC and DSE output 5 Brown VHF output Connect to VHF to supply GPS position data 6 Gray Fishfinder Input Standard Horizon Fishfinder, see FF520 owner's manual 7 White Fish Finder Output Standard Horizon Fishfinder, see FF520 owner's manual 8 Yellow GPS Antenna Input Connect to GPS Antenna Green wire Smart GPS Cable Pin Wire Color Description Connection Example 1 Red Battery Positive Connect to Battery Positive and Red wire of GPS Antenna 2 Green Smart GPS NMEA Input Connect to Smart GPS Input 3 Brown Smart GPS NMEA Output Connect to Smart GPS Output 4 NC 5 NC 6 Black/Yellow Battery Ground Connect to battery ground and Black wire of GPS
If you really need one, I have a spare Smart Antenna I could send you for $75. Joe Coquina C&C 35 MK I From: CnC-List [mailto:cnc-list-boun...@cnc-list.com] On Behalf Of bobmor99 . via CnC-List Sent: Sunday, February 21, 2016 9:21 AM To: cnc-list@cnc-list.com Cc: bobmor99 . Subject: Re: Stus-List Replacement Depth Transducer Hi Joel, It's unclear, from the manual, whether the GPS info must come into the Standard Horizon (SH) CP155C chartplotter via the connection to an external GPS antenna (the typical setup) or whether it could alternatively come in via the NMEA 0183 inbound wire in the Power and NMEA cable (which I do have). I tried sending a NMEA GPS data stream into the the plotter via the latter path, trying output from a handheld Garmin GPS and from a PC's serial (DB9) port but neither stream was seen by the Chartplotter. (I verified baud rates and all that.) It's looking like the inbound (to the plotter) NMEA wire in the Power and NMEA cable is just for DSC and DSE messages. It seemed like a doable hack, but now I don't think that's the case. Seeing as I don't have the plug at the end of the "Smart GPS Cable", I'm going to bail out on this one. Cheers, Bob M P.S. Perhaps too much information, but I would have used the NMEA 0183 GPS output from my new SH VX2200 radio as the GPS source if the SH CP155C were able to ingest it via the Power and NMEA cable. On Sat, Feb 20, 2016 at 9:29 PM, Joel Aronson via CnC-List <cnc-list@cnc-list.com<mailto:cnc-list@cnc-list.com>> wrote: Does the 155 require an external antenna? Joel
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