Problems with 898c si

I have a 997c on my console and I recently purchased a used 898c si that has about 400 hours on it. When I hooked up the 898 to my console the down image has lines all over the image. I didn’t get a picture of it but found one online that looks just like what mine does. What would cause that.

http://forums.sideimagingsoft.com/index.php?action=dlattach;topic=4921.0;attach=7489

Also there is a connection to link the 898 but my 997 don’t have one. Is there a way to link them together?

The 997 can be linked to both 898c SI models with the discontinued AS INTERLINK accessory.
They would only share waypoints and a GPS antenna.
INTERLINK was discontinued and no longer supported when the XX9 models came out.

The 898's supports Ethernet also.

Wayne do you know what would cause the lines.

most likely a bad transducer or head unit. I am assuming you put the 898 at the console using the 997 transducer. If not swap the units and transducer around and troubleshoot from there