User guide

69
Electrical Connections
For wiring information see APPENDIX M:
The AF-3000/4000 series power requirement is 12 volts at 2.5 Amps, a 3 amp circuit breaker or fuse should
be used for the system.
All wire should meet Mil Standard MIL-W-22759/16 (Tefzel insulation)
20 AWG wire is normally sufficient for the power supply and ground wires.
Pin 1 Red Master Power
Pin 3 Black Ground
*Pin 15 N/C Backup Power
*Backup Power input is used for a dual electrical system.
CAUTION: The screen case and sensors must have a good ground to the aircraft battery. The case
grounding screw should be connected with at least a 20 agw wire to the main aircraft ground buss.
Audio Connections
If two EFIS units are being installed, the audio from only 1 units needs to be connected. All alerts are passed
through the Ethernet network.
The harness is wired for a 560-ohm audio output that allows you to match the output impedance of the
system to standard aircraft audio panel and intercom audio devices. If your radio or audio panel does not
have an unswitched audio input you will need to purchase a audio mixer. Do not attempt to connect the
EFIS audio to a music input on an intercom, they are not the same impedance and it will not be loud enough.
Do not attempt to connect the EFIS audio along with a com radio to the same intercom input.
We recommend the following audio mixer if you do not have an audio panel:
http://www.fdatasystems.com/AP_60.htm
For wiring information see APPENDIX M:
Volume Adjustment
The volume can be adjusted from Instrument Calibration.
32. Test Audio
The range is (0%-100%) and is adjusted using the knob followed by pressing the [SAVE] button. The Test
Audio menu will play all the sounds in the system.