There have been questions in several threads on this board regarding the use of ping synch, and how to achieve the best result with wiring and software choices. As many know, I won't opine on questions that I have not personally verified or actually tried myself. I had the opportunity to reach out to a Lowrance/Navico employee who answered my below questions, and wanted to share what I learned.
Background: I currently run dual AT2 units on my Ranger with the HDS-16 Pro and Ghost motor. I have tied the two blue wires on the power cable for each AT2 together to synch their pings, It is working great.
Question 1: If I tie the yellow wire from the Pro wire harness to my two blue wires from the AT2 units, and then go into the Pro settings menu and change the function of the yellow wire to sync the pings, will my 2D Sonar and StructureScan pings all be synchronized with the dual AT2 pings?
Answer 1: Yes! But only for the "host" unit. In other words, if you have more than one Pro on the bow, add only 1 Pro yellow wire to the blue AT2 wires to activate the ping synch function, only on that unit, and have your other transducers connected to that "host" unit. In my case I use a single Pro-16 on the bow (only one unit) and my Ghost nosecone is connected to that host unit. Wired like in my question, all sonars (2D and StructureScan) will ping synch with both my AT2 transducers.
Question 2: Can I tie the yellow wire from a console Pro with the yellow wire of the bow Pro, change the function of both in the settings menu to synch, and with two AT2 units' blue wires (all four wires together) will that synch all transducers?
The answer I got on this variation (which would also include connecting the yellow wires from 2 bow Pro units together) is that this will create issues which confuse the units especially when a transducer is pulled out of the water and the unit enters a search mode for the bottom. Units slow down and don't read corrctly, so was advised to NOT do this.
A third interesting point I learned is that some boat riggers (for whatever reason) are attaching blue wires from various power cables to ground; don't do this as it causes problems.
I will be changing my wiring to the answer for Question 1 (I will add my Pro unit's yellow wire to my two blue wires on my AT2 units, and change the power setting on my bow Pro to make the yellow wire function become ping synch.
Hope this helps.
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Originally Posted by John Hagins
