Serial ppm support – Eagle Tree OSD Pro User Manual

Page 13

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Page 13

Figure 10

To change the direction arrow from up to down, move the Up/Down switch DOWN, and leave it down for more than one second. Then, the direction arrow
will point down, rapidly toggling the Up/Down switch will decrease the item’s value. Conversely, to point the direction arrow up, leave the Up/Down
switch in the UP position for more than one second.

To switch between the Up/Down action and the Select action using the Option B stick input method, just move the switch rapidly from the down position to
up position or from the up position to the down position, with no pause at the midpoint. With Option B, a menu item would be accessed and changed as
follows:

Invoke menu mode by clicking the 3 position switch between the down and middle positions

Highlight the menu item to be changed by continuing to click between the down and middle positions.

Once the menu item you want to change is highlighted, move the switch rapidly to the up position (without pausing in the middle position), which
will select the item.

Then, move the switch rapidly to the down position (without pausing at the middle position), which will enter edit mode.

Move the switch between the down and middle positions until the parameter is changed to the correct value

Move the switch rapidly to the up position to deselect the item.

Here is a link to a video that demonstrates accessing the menus using Option A stick input method. Note that in the video, the right switch is Up/Down,
and the left switch is Select.

http://www.rcgroups.com/forums/showatt.php?attachmentid=3418040

Turning the OSD Pro On/Off and Switching Screen Pages with the Select Action

In addition to manipulating the menus, the radio sticks can be used to turn the OSD display on and off during flight, and to advance between multiple main
screen pages (if you defined more than one main screen page as described in the “Configuring Parameters to Display on the Video OSD” section of the
manual above).

If you want to turn the OSD Pro on and off with the switches, set the “On/Off Display with Select?” option to “Yes” in the Change Display Settings menu.
This menu is described in the menu section of the manual, below. Then, toggling the Select channel will turn the OSD Pro on and off.

To advance between multiple pages, just click the Select channel (for Option B, just toggle the 3 position switch between the up and middle positions).
Note that when the last page is reached, if the On/Off display feature is enabled, the display will then turn off.

Serial PPM Support

Serial PPM, also known as “serial pulse train” or “PPM Sum,” combines the position information for all servos onto one wire. Most “LRS” radios support
this mode, and some others do also. With serial PPM you should be able to remove up to 4 of the servo cables between your receiver and OSD Pro, since
only one male to male servo wire is required to interface the OSD Pro with your receiver.

Note: Serial PPM is an advanced feature. It is recommended
that you first get everything working with the standard receiver
hookup, before attempting serial PPM setup. Please ask for
help on the OSD Pro forum thread on RCGroups, described
above, if you are uncertain about whether you receiver supports
it, or if you have questions about how to hook it up and
configure it.

Also, note that Futaba “S-Bus” and similar proprietary serial
PPM designs are presently not supported. Please let us know if
you need this support!

To set up Serial PPM support, follow these steps:

1) Make sure you disconnect your motor or propeller!

2) It is highly recommended that you disconnect all servos from
the OSD Pro servo outputs, until Serial PPM configuration is
complete, since the pulses being sent to the servos will not be
correct before and during configuration.

3) Disconnect all the male to male servo cables between your OSD Pro and receiver, if presently connected. Then, connect one male to male cable between
the Aileron-in port on the OSD Pro, and your receiver's serial PPM output. The pinout on the OSD Pro is standard: top=signal, middle=V+, bottom=
ground.

4) Invoke the OSD setup page by clicking “Hardware, Choose Parameters to Display on Video OSD” in the Windows software. Then, enable the “Servo
Deflections” display as described in the “Configuring Graphics and other Items to Display” manual section above. The Servo Deflections display will help
to confirm that Serial PPM is configured correctly. Then, click “OK” on the OSD setup page.

5) Invoke the OSD setup page again, and then click the "Serial PPM” button in the lower left-hand portion of the page. The page shown in Figure 10
should appear. This page has two main sections:

* Dropdown menus corresponding to each of the OSD Pro receiver inputs

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