Information For First Take-Off - RC Logger 88002RC Operating Instructions Manual

Faulty radio link during flight operation
You want to take off and the engines are already switched on or during flight operation. The red and the
green LEDs flash slowly at the same time and indicate a faulty radio link.
Possible causes: Receiver crystal has fallen out of the base, receiver crystal is faulty, receiver antenna
has broken off. Transmitter antenna not pulled out, second transmitter with the same transmitter channel
switched on/ batteries from transmitter empty. Check the possible cause and restart once more.
Should there be permanent radio interference during flight, the RC EYE 450 will start an emergency landing
and the LEDs will also indicate a faulty radio link here through simultaneous flashing.
emergency landing function
During operation, a permanent radio interference prevails. The RC EYE 450 starts an emergency landing
independently. The red and green LEDs flash slowly and simultaneously. Look for possible error causes on
the basis of the previously illustrated examples.
low voltage monitoring
The battery voltage is permanently monitored. If a certain battery voltage is exceeded (threshold approx.
9.2 V), the red LED starts to flash quickly. The green LED is permanently lit. This indicator can only be
reset by disconnecting the flight battery. If the red LED flashes, you should carry out a landing as quickly as
possible and adjust the flight operation.
Should the RC EYE 450 be connected to a non-fully charged battery, this can also lead to
undervoltage detection. In this case, fully charge the flight battery first of all and then try the
take-off once again.

13. InforMaTIon for fIrsT Take-off

general handling
A quadrotor helipcopter is essentially equipped with the handling of a normal helicopter. The differences,
however, are in the detail. For helicopters, the torque balance is stabilised through special gyros (in the rudder
function). For this, there are two different systems: "Normal gyros" or gyros with the "heading lock" function.
Normal gyros stabilise (cushion) the tail rotor against tipping motions which are caused by the pilots (driving
speed and/or elevator changes and/or external influences (e.g. side wind). A gyro with "heading lock" function
has a "holding action" against these tipping motions. Both systems respond after a control command – e.g.
"rudder to the left" and subsequent neutral positioning with the immediate stopping of the tipping motion.
In your RC EYE 450 – unlike standard helicopters – there are three gyros installed on the rudder, elevator and
aileron functions. The installed gyros are – in comparison with standard gyros – neither to be described as
"normal gyros" or with "heading lock" function.
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