Eagle Tree EagleEyes FPV Station - Manual (Page 5)

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http://www.eagletreesystems.com
Page 5
Figure 3: Selected Menu Item Indication
EagleEyes Diversity/Alarm Onscreen Menu
menu item (as indicated in Figure 2 above) then the lowest value will be displayed. In other words, the values cycle through their valid ranges as
the “MUTE/ADVANCE” button is successively tapped.
Menu Example: changing the Diversity Sensitivity
In this example, the Diversity Sensitivity is already set to “5” and I want to change it to “3”. To enter menu mode, I first hold the SELECT/MENU
button down for about two seconds, until two beeps are heard. Then, the indication that I am editing the “Enable Battery Alarm?” option appears
(as shown in Figure 3) for about 2 seconds. Then, the present value of the “Enable Battery Alarm?” setting (either “0” or “1”) is displayed on the
LEDs.
To advance to the Diversity Sensitivity menu, I press the SELECT/MENU
button 3 times, and then the LED pattern corresponding to Diversity
Sensitivity menu (as shown in Figure 3) is displayed for about 2 seconds.
Then the present value of Diversity Sensitivity (5) is displayed on the LEDs,
as shown in Figure 4.
Now, the MUTE/ADVANCE button is tapped over and over to increase the
Diversity Sensitivity until it reaches 10, and then it rolls over to 1 as I
continue to tap, and finally reaches 3. Then, I hold the “SELECT/MENU”
button for 2 seconds until two beeps are heard, to exit menu mode. Now, the
Diversity Sensitivity value is programmed to be 3, and this value will be
saved until I change it again.
The Diversity Function
This section describes the diversity function of the EagleEyes ground station.
This function can be used with or without the Vector airborne system.
What the Diversity Function Does
The diversity function constantly inspects the signal quality of two A/V receivers connected to the input channels of the EagleEyes, and switches to
the highest quality signal. The two receivers can be either NTSC or PAL. The EagleEyes automatically detects the video mode. Video links of
any frequency can be used, or can even be mixed if transmitters of two different frequencies are used on the model.
The diversity function can help to eliminate loss of video signal due to “multipath” that often occurs with a single receiver. As an example, those
who have ever watched television using “rabbit ears” antennas know that even slight movements of the antenna can improve signal. If you are
using two receivers, it is more likely that at least one of them will be in a good position at any given time.
Further, if you use a directional antenna for flying at longer range, that antenna may not work well when you are close to your takeoff point. To
solve this problem, many pilots use an omni-directional antenna when close in, and a directional antenna when flying far away. If both of these
receivers are connected to the EagleEyes, the diversity function will pick the stronger of the two automatically.
How to Set Up the Diversity Function
To set up the diversity function, simply connect two receivers to the EagleEyes Primary and Secondary A/V inputs, as described in the
“Connections” section above. The “SELECT/MUTE” switch is tapped to switch between Input 1, Input 2, and Diversity mode. The LEDs
indicate the present mode. When Diversity mode is entered, the LED corresponding to the presently selected input is illuminated, and also the
“Diversity” LED is illuminated. Then, as the diversity automatically switches between the two inputs, the LED corresponding to the new input is
illuminated.
If you notice that the audio levels or video images of the two input channels do not match in appearance, the two blue potentiometers can be used to
adjust the secondary A/V input levels. A small screwdriver is required to rotate the potentiometers. If the video signal of the secondary input
appears to be lighter or darker than that the primary input, gently rotate the “Secondary Video Level Match” potentiometer, while switching between
the two inputs with the Select/Menu button, to match the inputs. Similarly, if the audio signal of the secondary input appears to be softer or louder
than that of the primary input, gently rotate the “Secondary Audio Level Match” potentiometer. CAUTION: rotate the potentiometers gently, and
do not rotate the potentiometers past their stops. They do not rotate 360 degrees! Forcing the potentiometers past their stops could
damage the EagleEyes board or other equipment.
How to Configure the Diversity Function
There are two diversity related configuration options:
1.
Diversity Sensitivity. The sensitivity adjustment range is from 1
(least sensitive- many video glitches are required during a short
period before switching video channels), to 10 (most sensitive,
with almost instantaneous switching with only one video glitch).
The default setting is 5.
2. Diversity Beep: will produce a short beep when the diversity
channel is automatically switched, if you desire.