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May 172011
 

Everybody knows that marine hardware suppliers tend to charge a lot of money for their products, right? Like just putting the word “Marine” on something instantly doubles the cost… I just had a rather funny example of this:

As part of the climate monitoring sensors we are putting on the Journeyman we are also mounting a weather sensor, in this case an Airmar PB200, which is actually quite a smart little unit. But it comes without any cables, so I ordered a cable and a NMEA0183 and NMEA2000 interface box. The cable and box cost about $200, and when the stuff arrived I open the interface box and find that it contains…. nothing. Well OK, there was a small bag of plastic connectors for manually splicing the cable conductors.

So the plastic box was like 3 times the price for a standard junction box (But then it wouldn’t have the fancy sticker, of course…) and I still have to do all the work of interfacing the cables myself. Nice move!

(Oh, and the best part: It has a sticker on the side with a serial number and the ominous threat: “Warranty void if this label removed”).


  3 Responses to “Funny suppliers…”

  1. Hej

    Undrar hur man kopplar ihop NMEA 2000 med NMEA 0183, trodde inte att det gick.

    • Nja, 0183 och 2000 kan inte kopplas ihop direkt, dom är fundamentalt olika både elektriskt och protokollmässigt. I det här fallet har sensorn båda gränssnitten och sänder samtidigt samma mätvärden på bägge (men med olika format, alltså).

      Sedan finns det ju också konverterare mellan dem. Konverteraren är då i praktiken en liten mikroprocessor som läser det ena formatet och skriver det andra….

  2. Aha, jag tolkade inlägget att man kunde koppla ihop dem. Tack för förtydligandet och för en intressant blogg!