Marine Electronics Forum

Lowrance Point-1 AP issue

Old 08-21-2017, 12:08 PM
Thread Starter
Join Date: Sep 2010
Posts: 82
Likes: 0
Received 0 Likes on 0 Posts
Default Lowrance Point-1 AP issue

I have the following system installed on the boat, Lowance HDS12 Carbon and the Lowrance outboard autopilot which contains the NAC1 and the Point-1 AP. I am having a problem with the Heading data. The first question I have is there is nothing in the manual about how to adjust the heading offset on the point-1 to get it adjusted to a reference heading (I am using the wet compass on the boat as the reference). I be lieve this is required because when it is mounted you will need an offset due to the mechanical mounting. I see where you do the calibration to get the deviation adjustment.
When I run the boat I can not get the COG to agree with the point-1 AP heading data. The COG does agree with the wet compass when I am running a straight line.
It is my understanding the Point-1 AP should only be used for heading information and for navigation and position information you should use the HDS Carbon internal GPS.
What is the difference between the Point-1 and the Point-1 AP?

Old 08-21-2017, 10:00 PM
Admirals Club Admiral's Club Member
Join Date: Mar 2011
Location: Canada
Posts: 3,975
Likes: 0
Received 337 Likes on 282 Posts

There should be a way to set the heading offset. Also there is a front to the unit which should make it close. But that does 't mater if you can find the offset setting.
Old 08-22-2017, 06:27 AM
Admirals Club Admiral's Club Member
Join Date: Aug 2010
Location: Mandeville, LA
Posts: 1,465
Received 114 Likes on 80 Posts

Also, make sure you are switching the GPS settings to magnetic north for the calibration process with the wet compass. Most are set up to show true north.
Old 08-22-2017, 07:02 AM
Senior Member Admiral's Club Member
THT sponsor
Join Date: Mar 2016
Posts: 1,482
Likes: 0
Received 32 Likes on 30 Posts

Have you check to make sure there is no interference with the Point-1 antenna. I would set your unit to Heading up and see what that does for you. COG will be less accurate than the Heading up as long as you compass is calibrated correctly and has little to no interference. The Point-1 should line up with your fluid compass or at least be very close to the same. Use the Point-1 as a heading source, and then change your data bar and map orientation to read Heading Up. To confirm the Point-1 is selected as a source go into your settings page under Communications and Sources. Then make sure the Heading has the Point-1 selected as its source.
Old 08-23-2017, 05:17 AM
Thread Starter
Join Date: Sep 2010
Posts: 82
Likes: 0
Received 0 Likes on 0 Posts

I will be relocating the Point-1 AP on Thursday to see if that resolves the problem.

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are On
Refbacks are Off

Thread Tools
Search this Thread

Contact Us - Archive - Advertising - Cookie Policy - Privacy Statement - Terms of Service - Do Not Sell My Personal Information -

Copyright © 2021 MH Sub I, LLC dba Internet Brands. All rights reserved. Use of this site indicates your consent to the Terms of Use.