OH BOY, I'm jumping in the deep end of the Garmin pool
All my connectors arrived from SteinAir to start building the harness for my all Garmin panel.
I'm having a hard time getting my head around the proper way to do a CAN BUS daisy chain connection.
There is a lot of conflicting information out there and even some of the Garmin info conflicts with itself. In fairness, some of the Garmin video info is older and the methods have changed over the last couple of years.
So what's the right way to do a daisy chain? The current Garmin manual schematic shows shield ground at each backshell connection.
OK, got it
Now, how do we physically make that connection?
Garmin does not have a complete drawing of the connection but this is as close as I could find in the G3X manual. BUT it doesn't show both conductors from the CAN BUS wire...there should be 2 wires going to the backshell, (HI & LO).
Now in all my searching for an image of the daisy chain connection...none look like this
Most look something like this.
But the long green ground coming out of the back of the solder sleeve looping back to the backshell seems to violate the max length for a shield ground. And somewhere in the manual it forbids the shield ground for coming out of the back of the solder sleeve and looping around.
# 4 gives the min and max length for the shield ground. Now admittedly the Garmin drawing shows a flat braided shield wire not a insulated wire.
Whats a budding avionics tech to do ??
All my connectors arrived from SteinAir to start building the harness for my all Garmin panel.
I'm having a hard time getting my head around the proper way to do a CAN BUS daisy chain connection.
There is a lot of conflicting information out there and even some of the Garmin info conflicts with itself. In fairness, some of the Garmin video info is older and the methods have changed over the last couple of years.
So what's the right way to do a daisy chain? The current Garmin manual schematic shows shield ground at each backshell connection.
OK, got it
Now, how do we physically make that connection?
Garmin does not have a complete drawing of the connection but this is as close as I could find in the G3X manual. BUT it doesn't show both conductors from the CAN BUS wire...there should be 2 wires going to the backshell, (HI & LO).
Now in all my searching for an image of the daisy chain connection...none look like this
Most look something like this.
But the long green ground coming out of the back of the solder sleeve looping back to the backshell seems to violate the max length for a shield ground. And somewhere in the manual it forbids the shield ground for coming out of the back of the solder sleeve and looping around.
# 4 gives the min and max length for the shield ground. Now admittedly the Garmin drawing shows a flat braided shield wire not a insulated wire.
Whats a budding avionics tech to do ??