Ethos v1.5.7 and X18, X20 series User Manual
The choice of transmitter channel range also affects the transmitted update rates.
Eight channels are transmitted every 7ms. If using more than 8 channels, then the
channel update rates are as follows:
Channel Range Update Rate Notes
1-24 21ms Ch1-8, then Ch9-16, then
Ch17-24 sent in rotation
1-16 14ms Ch1-8, Ch9-16, sent
alternately
1-8 7ms Ch1-8
Racemode 4ms Digital servos only
Racing mode
Racing mode offers a very low latency of 4ms with receivers like the RS. The RF
module module and the RS receiver must be on v2.1.7 or later.
If the Channel Range is set to Ch1-8, it becomes possible to select a source (e.g a
switch) which will enable race mode. Once the RS receiver has been bound (see
below), and racing mode has been enabled, the RS receiver must be re-powered for
racing mode to take effect.
2.4G
Enable or disable the 2.4G RF module.
Antenna: Select Internal or External (on ANT1 connector) Antenna. Although the
RF stage has built-in protection, it is good practice to ensure that an external
antenna has been fitted before selecting the External antenna. Please note that the
antenna selection is on a per model basis, so each time a model change selection is
made ETHOS sets the antenna mode for the given model.
900M
Enable or disable the 900M RF module.
Antenna:
Select Internal or External (on ANT2 connector) Antenna. Although the RF stage
has built-in protection, it is good practice to ensure that an external antenna has
been fitted before selecting the External antenna. Please note that the antenna
selection is on a per model basis, so each time a model change selection is made
ETHOS sets the antenna mode for the given model.
Power:
FCC: Select the RF Power desired between 10, 25, 100, 200, 500mW, 1000mW.
LBT: Select the RF Power desired between 25mW (telemetry via 868MHz),
200mW or 500mW (telemetry via 2.4GHz).
In ACCESS mode the 2.4g and 900m RF paths work in tandem with one set of ACCESS
controls. There can be three 2.4G receivers registered and bound or three 900M
receivers registered and bound or a combination of 2.4G and 900M for a total of three
receivers.
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