AV-Mag External Magnetometer - Installation, Configuration, & Calibration

Install Equipment Needed

The AV-Mag is designed to be easy to install and configure. The performance of the AV-Mag is dependent on the condition of the systems of the host aircraft. The AV-Mag will not meet the performance specification if the host aircraft systems are not in good working order.

• Camp Compass - What affects the magnetic compass will affect the magnetometer
• Non-magnetic screwdriver and wrench should be used for installation - Using a magnetic screwdriver may cause issues with the AV-Mag but it won’t ruin it. Other units are not that way. 
• Brass fasteners
• Non-magnetic digital level
• Use new wiring - M27500 3 conductor 22AWG wire
• AV-30 Installation Manual / Wiring diagram 

Where to Mount the AV-Mag?

This is different aircraft to aircraft.

Considerations

• Existing wiring
• Lighting
• Motors
• Steel control cables
• Pitot Heat
• ELT
• Anything electronic, steel, or loose or coiled wiring

**Mount as close to the angles of the AV-30 in the panel as possible

*Up to 4 AV-30s can be connected to the AV-Mag.

*Parallel just the Brown (Pin 6) and Black (Pin 10) wires to the other AV-30s. 

AV-Mag Orientation

Configuration of the AV-MAG

• Enter the install menu
• Serial 4 - set to AV-Mag
  • Once set you will have a MAGCAL flag
  • If you have a NOMAG flag then something is not communicating. (troubleshooting)
• Install menu steps to be completed
  • interference check
  • orientation
  • angles
• Calibration to be completed

Calibration of the AV-Mag

• Compass Rose not needed
• Only need to know North
• Orient aircraft to North Press “Next”
• The AV-30 will give you a countdown of 30 degrees.
• Once 0 is shown then Click “Next” 
• Continue this until all 12 points are completed. 
• Once completed check all headings and make sure they are indicating correctly. 
• If the heading is off the same amount at every point then you will need to rotate/shim the AV-30 more closely to the line of flight. 

**EACH AV-30 must have the configuration, installation, and calibration completed.

Interference Check

The interference range indicates fluctuating magnetic fields which will negatively impact calculated magnetic heading values, so a good installation requires this range to be as small as possible. If the range is greater than 10%, attempts should be made to re-site the AV-Mag location or to mitigate interferers.
 

Possible Interference:

Lights:

• Landing 
• Taxi 
• Strobe 
• Recognition
• All Lights
•  

Avionics:

• Comm Radio
• GPS
• USB Charger
• iPad
• Tools in Baggage compartment

Controls:

• Aileron
• Rudder
• Elevator
• Flaps

Other:

• Landing Gear
• Speed Brakes
• Autopilot Engage
• Pitot Heat
• Air Conditioner
• Blowers
   

Over braid for shielding for extra protection

Over wiring varglas protection for wiring route to eliminate potential of interference into the wiring?  

Bonding Braid: https://www.awcwire.com/product/aa59569r36s0375