User manual

U-See User Manual - Settings Menu
This attained through the use of the servos window, accessed by means of settings →
servos menu entry.
This servo adjusmtent window has a top drop down control that selects which servo is
being configured. At every moment, the proper channels for the current connected aircraft
will be shown.
Below the drop-down menu to select servo, the window is divided in two zones. Left zone
allows configuration of servo end-point and neutral position (if that channel has a neutral)
and allows positioning the servo in that position during servo adjustment mode (through
buttons “Minimum”,”Neutral” and “Maximum”). Right section allows extra options and the
available settings depend on whether the channel is configured in simple or advanced
mode:
• In Simple mode: Simple mode exposes a checkbox to reverse the servo movement
(Inverted) and a checkbox to change the servo into “digital” mode ( PWM pulse is
configured to 333Hz and 1500µs neutral pulse in an easy way). Besides the
checkbox, a “get” and “set button are available. When clicked, get button queries
the autopilot for current in-memory values and shows them in the U-See interface.
Set button, on the other hand, takes U-See values and copy them to the autopilot
memory.
• In Advanced mode: Advanced mode exposes the same “inverted” checkbox to
reverse servo movement direction, but also allows selection of PWM signal
frequency and pulse width. Get and Set button work the same way than the simple
counterpart.
The available frequencies for advanced mode are:
• 50 Hz (Safest, most usual servo frequency)
• 333 Hz (Usually, digital servos accept this frequency)
• 200 Hz
• 300 Hz
• 560 Hz (Very often, used for tail servo in helicopters).
Available pulse neutral times are:
• 1500 µs (Usual servo neutral)
• 760 µs (Used usually only with 560 Hz servos: this frequency leaves ~1786 µs
available for PWM width, hence the reduced pulse width )
Advanced servo configuration mode allows any combination of frequency and pulse width,
(further frequencies and pulse widths are available upon request).
The procedure to adjust the mechanical travels of the system servos would be:
1. Start the servo adjustment mode on the Command Mode window.
2. Open the Servos window on Settings → Servos.
3. Click Get button to receive the servo data from the Autopilot.
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Servos can be damaged by incorrect type of PWM signal. Before making
changes servo manufacturer documentation should be checked to make
sure proper settings are being applied.