Furuno go 1871f sounder set up

[F/b d’souvenir]

Hi everyone I’m new here in the furom and I need help on my furuno gp1871f with p66 transducer wondering on how to set up the sounder we ate having prom len on the depth the unit is giving us it seems like not accurate. I hope you can help me thank you and advance and god bless all

 

[Snips]

F/b d"souvenir,
It is hard to visualize by what you mean by "not accurate". Can you post a screen shot showing both frequencies so we can better understand what you may be seeing?

Snips

 

[F/b d’souvenir]

On this photo the depth show 71.4ft but the actual depth is just a little over a fathom

 

[Snips]

F/b d'souvenir,
So on the left side of the display it appears that the display has been shift, as the top of the display is not at a zero depth. The far right appear to have the top of the display at zero.
Are you shifting the water depth range?

Snips