Eagle Tree OSD Pro - Manual (Page 20)

Copyright © 2009-2012 Eagle Tree Systems, LLC
http://www.eagletreesystems.com
Page 20
has gone wrong. Please run the Servo Analysis Wizard again, paying close attention to the on-screen prompts, or see the troubleshooting section if
the problem persists.
7) Select the “Test Return to Home” option in the Main Menu, and set it to “Both”. Then, exit the menus.
8) A few seconds after exiting the menus, the message “RTH Engaged: move sticks to stop test” should appear in the upper part of the screen,
assuming you are not moving your transmitter sticks. This indicates that test mode is active. If this message does not appear, see the
troubleshooting section.
9) NOTE: RTH will not manipulate the throttle unless your altitude is above about 60 feet (20 m). This is true even when using the simulator. Make
sure that your altitude is reading 60 feet or higher before performing these tests, or throttle control will be disabled.
10) When you move your transmitter sticks, the message should change to “RTH Engaged: Release sticks for test.” This indicates that the test has
been temporarily suspended, returning control of the model to you.
11) Ensure that all your model’s control surfaces move correctly with your stick movements.
12) Fly the plane icon away from home, so that it is a considerable distance (more than a few feet or meters) from home in the simulator, and pointing
approximately 180 degrees away from home.
13) When you don’t move your sticks for a second or two, and RTH test mode activates, the plane icon should begin to turn toward home. Observe
your model’s rudder or aileron to ensure that it is deflecting in the correct direction, based on the direction the plane icon is turning on the screen.
If the surface is moving IN THE WRONG DIRECTION, rerun the Servo Analysis Wizard, and pay close attention to the instructions.
14) Repeat the above tests, starting at step 12, but choose headings that are different than 180 degrees, to ensure that the rudder or ailerons turn in the
correct direction, for both left turn and right turn.
15) Move your transmitter’s throttle and elevator sticks to reduce the plane icon’s altitude to well below the Cruise Altitude Window, but above about
60 feet (20 meters). Then, release the sticks. After the message “RTH Engaged: move sticks to stop test” appears, you should see an increase in
altitude, until the altitude reaches the Cruise Altitude Window. On your model, you should see correct movement of the elevator (up deflection. If
the elevator is moving IN THE WRONG DIRECTION, rerun the Servo Analysis Wizard, and pay close attention to the instructions. NOTE:
RTH will not manipulate the throttle unless your altitude is above about 60 feet (20 m). This is true even when using the simulator. Make sure
that your altitude is reading 60 feet or higher before performing these tests, or throttle control will be disabled.
16) If you have connected a servo to your receiver’s throttle output as suggested above, move your transmitter’s throttle and elevator sticks to reduce
the plane icon’s altitude to well below the Cruise Altitude Window, but above about 60 feet (20 meters), AND make sure your throttle setting
results in the simulator showing a speed that is less than the speed you selected for Max Cruise Speed (VNE) in the Safety Mode menu (unless you
selected “0” for maximum cruise speed). Then, release the sticks and observe the throttle servo when RTH mode engages. The servo should
increase to the setting you chose for “Throttle Climb” when you ran the Servo Analysis Wizard, and should move in the same direction it moved
when you manually increased the throttle stick on your transmitter. If the servo does not move in this direction, or does not move at all, rerun the
Servo Analysis Wizard, and pay close attention to the instructions. You should also see the throttle servo deflection display (“Thr”) increase to
above 0 during this test.
17) Move your transmitter’s throttle and elevator sticks to increase the plane icon’s altitude to well above the Cruise Altitude Window. Then, release
the sticks. Once RTH mode engages, you should begin to see a decrease in altitude, until the altitude reaches the Cruise Altitude Window.
18) If you have connected a servo to your receiver’s throttle output as suggested above, observe the throttle servo at this time. The servo should
quickly decrease to the setting you chose for “Motor Off” when you ran the Servo Analysis Wizard, and should move in the same direction it
moved when you manually decreased the throttle stick on your transmitter. If the servo does not move in this direction, rerun the Servo Analysis
Wizard, and pay close attention to the instructions. You should also see the throttle servo deflection display (“Thr”) decrease to a negative number
during this test.
19) Disable the Flight Simulator from the Main Menu
b) Testing and Adjusting RTH while Flying
Important: NEVER fly with the Flight Simulator Enabled, and NEVER take off or land with the “Test Return to Home” mode enabled! The
settings adjustments described below should be done after landing, unless your piloting skill is sufficient to allow you to adjust them while flying.
Note: if you follow the steps below, and still have trouble with RTH, we recommend you post your issue to the OSD Pro online forum, as described in
the “Have Questions or Feedback” section above. The community can provide you with tips and suggestions for settings with your particular model.
1) Complete the step a) above.
2) Configure the OSD Pro to display Altitudes, Speeds, GPS Satellites, Course, Home Arrow, Compass, and GPS HDOP, at a minimum.
3) It is also recommended that “Servo Deflections” be displayed, for later troubleshooting of any RTH issues, assuming you are recording video.
4) On a calm day, complete your model’s range check, ensure you have good GPS signal, and then fly your model.
5) When it is safe to do so, engage RTH during flight using one of the methods in the “Engaging RTH for Testing During Flight” section above. Note
that if you use the menu method of engaging RTH, select the “Altitude” option or “Both” option.
6) If you are using the menu method or the 3 position switch method of activating RTH test mode, make sure you still have full control of your model
– RTH test mode should disengage briefly when your move your sticks. If it is not disengaging, turn off RTH test mode. If you have full control
of your model, exit the menus, and fly your model so that it is flying toward Home, at ABOVE the Cruise Altitude Window (but below the legal
altitude limit).
7) When safe to do so, release your sticks, but BE PREPARED TO TAKE IMMEDIATE CONTROL OF THE MODEL. The message “RTH
Engaged: move sticks to stop test” should appear on the screen (if using one of the test modes), and the model should decrease throttle, so that the
model returns to cruise altitude. If the model does not decrease altitude, turn off “Test Return to Home” mode if invoked, land, and make sure you
have completed step a) above correctly.
8) Again, fly your model so that it is flying toward home, and if it is safe to do so, decrease the model’s altitude to below the Cruise Altitude Window.
9) When safe to do so, engage RTH. The model should increase throttle up to the “Climb” throttle setting you selected in the Servo Analysis Wizard,
and should apply up elevator, so that the model returns to cruise altitude.