User Manual

Deviation User Manual for Jumper T8SG, Release 5.0
26 Chapter 8. Transmitter Menu
8.5 Range Test
It is recommended that you range test a new
model before flying it the first time to verify that
you will be able to control the model at normal
flying distances. At some clubs, this is required as
a safety measure. The range test page allows this.
Once the range test page is opened, press the
‘Start test’ button to start the range test. The old
and new power levels will be displayed. The
standard procedure is then to walk about 30
meters away, and verify that you still have control
of the aircraft. You can then press the ‘Stop test’
button to end the range test and restore the
configured radio power level. Pressing the ‘Ext’
button to exit the page will also restore the power
level.
The radio range will be reduced by the square root
of the change in power level. So going from
100mW to 100uW represents a change of power
of roughly 1000, or a range reduction of a factor
of a little over 30. So the normal range test of 30
meters would indicate that you should be able to
control the model out to 900 meters.
The installed RF module used for the current
model must have a PA. If that is not the case, or
the power level chosen for the model is already at
the minimum value, a message to that effect will
be displayed.
8.5. Range Test