Owner's manual
Copyright © 2010-2014 Eagle Tree Systems, LLC   
http://www.eagletreesystems.com 
Page 12 
EagleEyes Main Onscreen Menu (OSD Pro) 
Figure 8 – Pan Angles for tracker (this one rotates more than 
360 degrees) 
Configuring and Using the EagleEyes with the OSD PRO 
This section describes using the EagleEyes with the OSD PRO.  If you are using the EagleEyes with the Vector, see the prior 
section, starting on page 7. 
All of the EagleEyes features can be configured using the OSD Pro Onscreen menus. Please see the OSD Pro instruction manual for information on 
how to use the Onscreen menus with either your radio sticks, or with your computer. Note: that the EagleEyes must be connected to your video 
receiver, and the EagleEyes telemetry LED must be blinking, for Onscreen configuration to work! 
After invoking the OSD Pro Onscreen menus, select the “Configure EagleEyes 
Station” item from the main menu. Then, the EagleEyes main setup menu will 
appear, as shown in Figure 5. The additional EagleEyes Onscreen menus are 
described below, in Figure 6 and Figure 7. 
The Antenna Tracking Function 
This section describes the antenna tracking function of the EagleEyes ground 
station. This function requires the OSD Pro airborne system, and a servo based 
antenna panning or pan/tilt mount (tracker). 
IMPORTANT: please read through this entire section before attempting to calibrate your tracker. Calibration is relatively simple as long as 
you understand how the calibration procedure is done. 
What the Tracking Function Does 
The tracking function points a pan/tilt capable antenna tracker directly towards your model, based on the position of the model in relation to home. 
The EagleEyes drives the pan and (optionally) tilt servo of your tracker. The EagleEyes is easily calibrated to work with virtually any type of servo 
based antenna tracker. Some sources for pan/tilt antenna mounts are http://www.readymaderc.com and http://www.servocity.com.  
How to Set Up the Antenna Tracking Hardware 
The Pan servo, and optionally the tilt servo, of your pan/tilt mount are connected to the EagleEyes pan and tilt servo outputs, as described in the this 
“Connections” section above. The EagleEyes board is capable of providing a maximum burst current of approximately 5 amps to the servos, 
dependent on the capabilities of your power supply. Caution: when a tracker is being used, the EagleEyes printed circuit board, especially the 
center of the board, can become hot to the touch! The maximum continuous current available to the servos depends on the input voltage, as well 
as the capability of your power supply. Higher input voltages cause the on-board regulator to produce more heat. If the regulator becomes too hot, 
it will shut off briefly (for about 20 seconds) and then start again.  Note that the rest of the EagleEyes functionality will not shut off - only the 
power to the servos. With the standard sized servos used for typical pan/tilt trackers, there should never be a regulator shutoff, even at the maximum 
input voltage of 14 volts. If your tracker uses very large servos, and they are constantly under heavy load, the regulator may shut off briefly at 
higher input voltages. If this occurs, see the Troubleshooting section below. 
How to Configure the Antenna Tracking Function 
There are two ways to configure and calibrate the Antenna Tracking function – on the PC, using our software, or using the on-screen OSD Pro 
menus, your radio sticks, and a video display. While the two methods of calibration are similar, calibration using the PC is generally much easier to 
do and more precise, but the on-screen method is provided for field 
calibration without a laptop. 
Before using either calibration method, you will need to confirm that the 
EagleEyes is receiving telemetry data from the OSD Pro. If telemetry is 
being received, the EagleEyes “Telemetry” LED will be flashing at about 
2 blinks/second. Please see the troubleshooting section if this is not the 
case. 
With both calibration methods, the pan and tilt functions of your tracker 
are calibrated slightly differently.  For pan calibration, two or more 
angles can be calibrated, for maximum accuracy and flexibility. For tilt 
calibration, only the highest and lowest points are calibrated. 
Information for Calibrating Pan Angles (both 
calibration methods) 
To calibrate the pan on either the PC or on-screen menus, the first step is 
to make sure you can physically measure your tracker’s pan angle, using a 
compass, (with the tracker positioned so that the pan servo center point is 
pointing toward magnetic north), by installing a paper compass rose 










