Sea Mistress
23-12-2007, 08:45 PM
Finally saved the necessary funds to purchase a Furuno FCV-585 and 600w transom mount tranny. Though I would hang out and get the bigger screen and ability to hook up a 1kw transducer if required later on.
I am a bit confused with the NMEA connectivity trying to hook up my old Garmin 128 gps and Icom M304 Vhf radio while at it.
I have worked out that RD is receive data and TD is transmit data so this is what I have done:-
NMEA signal out of Garmin GPS
Positive - Garmin (nmea out) blue wire to both Furuno RD-A yellow and Icom (nmea in +) yellow
Negative With no other Garmin (nmea out) I have just connected both Furuno RD-A green and Icom (nmea in -) green
to the common negative terminal block (same as neg power for all devices) but this doesn’t seem correct to me.
NMEA signal in to Garmin GPS – Don’t know whether I will ever use this
Positive - Garmin (nmea in) brown wire to Furuno TD-A white
Negative again just Furuno TD-A blue to the common negative terminal block.
One other query with the furuno is the bare wire that is part of the wiring harness – does this connect to negative power (earth) also?..
Transom mount Transducer
I am reasonably happy with the position of the transducer, height wise (not yet water tested) but cannot get it parallel to the bottom of the hull with or without the supplied shim. Has anyone sanded down the plastic shim or used anything else to fix this?.
I read not to turn on the sounder with transducer out of water, but can you disconnect the transducer cable and turn it on safely ?
Sorry for all the in depth questions, but hoping someone can shed some light on this.
Cheers
I am a bit confused with the NMEA connectivity trying to hook up my old Garmin 128 gps and Icom M304 Vhf radio while at it.
I have worked out that RD is receive data and TD is transmit data so this is what I have done:-
NMEA signal out of Garmin GPS
Positive - Garmin (nmea out) blue wire to both Furuno RD-A yellow and Icom (nmea in +) yellow
Negative With no other Garmin (nmea out) I have just connected both Furuno RD-A green and Icom (nmea in -) green
to the common negative terminal block (same as neg power for all devices) but this doesn’t seem correct to me.
NMEA signal in to Garmin GPS – Don’t know whether I will ever use this
Positive - Garmin (nmea in) brown wire to Furuno TD-A white
Negative again just Furuno TD-A blue to the common negative terminal block.
One other query with the furuno is the bare wire that is part of the wiring harness – does this connect to negative power (earth) also?..
Transom mount Transducer
I am reasonably happy with the position of the transducer, height wise (not yet water tested) but cannot get it parallel to the bottom of the hull with or without the supplied shim. Has anyone sanded down the plastic shim or used anything else to fix this?.
I read not to turn on the sounder with transducer out of water, but can you disconnect the transducer cable and turn it on safely ?
Sorry for all the in depth questions, but hoping someone can shed some light on this.
Cheers