Hi Anonymous, I want to help you with your question, but I need more information from you. The ST40 line of instruments are for speed, depth and wind. They CAN talk to your autopilot, but ST40 isn't an autopilot. IF you can tell me which model of autopilot you have, I'll try my best to sort it out. Can you please add details in the comment box?Hi Anonymous, I want to help you with your question, but I need more information from you. The ST40 line of instruments are for speed, depth and wind. They CAN talk to your autopilot, but ST40 isn't an autopilot. IF you can tell me which model of autopilot you have, I'll try my best to sort it out. Can you please add details in the comment box?
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It replaces the fluxgate compass and adds a few Moore sensors to the system, such as acceleration an deviation sensors to give a m?re intelligent data to the processor
The autopilot draws a good amount of current. make sure that all connections are good and tight starting with the connection at the fuse or breaker all the way through to the unit. make sure the connection at the autopilot is clean and tight. If the problem persists, it may be internal to the unit.
First of all - is the boat compass correct? How does it align with COG? Secondly, do you have a magnetic field that interfere with the fluxgate? To test for this you can use the compass on your smartphone or a handheld compass, move about in the boat and keep the phone/compass aligned with the keel. If the heading drifts in the area where you have your fluxgate today, move it.
If I were troubleshooting this, I'd manually adjust the orientation of the compass sensor until it matched the true heading. Once that was done, I'd move it side to side to ensure it's changing in the correct directions. If not, the unit could be upside down. Let me know how this turns out.
compass needles are affected by iron objects and can also be affected by field magnetism generated by current flowing through a wire .Bilge pumps , winch motors are heavy current drawers and they could affect the compass operation
while the voltage is low the field of the magnetism around the wire can influence the compass heading so check for any electronic apparatus wiring close to the unit ( radio , radar etc
it may be necessary to run the powers wires in an insulated sheath ( like coaxial cable or other insulated power cables) around sensitive equipment
talk with marine equipment installers to get better ideas as to prevent interference with the compass
I connected my Garmin gpsmap76 to a Raymarine autopilot using the NEMA output from the GPS. The autopilot was also on the seatalk bus. It work fine. The GPS provided navigational guidance to the autopilot
You have two things that orient the radar, on is called heading (or bearing) alignment. This is where you aim your radar so that a target comes up at 12 o'clock when dead ahead. Access this mode by pressing and holding menu duing power on, and go in to Installation Mode, radar setup, next page, align heading. I have posted a "tip" on this, search for VX2 radar alignment.
After this is done, North up is accomplished by having a magnetic input (fluxgate compass or autopilot). Calibration of this compass varies, but if it is accurate, then all should line up nicely.
Hi Anonymous, I want to help you with your question, but I need more information from you. The ST40 line of instruments are for speed, depth and wind. They CAN talk to your autopilot, but ST40 isn't an autopilot. IF you can tell me which model of autopilot you have, I'll try my best to sort it out. Can you please add details in the comment box?
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