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Before the Jet-tronic is used for the first time, it has to be "taught" the radio control system's
stick positions for the throttle stick, and may be the positions of the three-position switch.
This is the procedure:
1. Switch off the electronics and connect the two servo leads attached to the ECU to the
receiver (THRottle = RPM-slider, AUX = 3-position switch). Connect the pump battery (see
wiring diagram).
Connect the Ground Support Unit (GSU) to the electronics (optional).
2. Sender einschalten und sicherstellen, dass der Turbinen-Steuerkanal allein durch den vor-
gesehenen Schieberegler betätigt und durch keinerlei andere Funktionen, z.B. über Mischer,
beeinflusst wird. Der Kanal sollte darüber hinaus die normale Mittelstellung und Standard-
ausschlaggrössen aufweisen (Subtrim=0, Travel=100%).
3. Press and hold the "Select Menu" button on the GSU, then switch on the Jet-tronic (via the
receiver switch).
Note:
The small button on the LED board can also be used instead of the "Select
Menu" button on the GSU.
Release the button as soon as the three LEDs flash in the following sequence:
LED
Standby
Pump running
OK
The GSU screen simultaneously displays the message:
Release key to:
- learn RC -
This procedure calls up a special operating mode (-> "Teach In") for teaching the system the
stick positions.
When you release the button, the green "OK" LED lights up.
The GSU screen now displays the message:
Set Throttle to
minimum:
- learn RC -
4. The first step in the "learning" process now occurs: the setting of the RPM-slider position in
the "OFF" position. You move the slider „OFF" (back end-point). When you have done this,
press a button -> the red "pump running" LED lights up. As a check, the GSU screen
displays a numeric value at bottom right, which changes to reflect the stick position (= pulse
width of receiver signal). Once you have stored the "OFF" stick position (by pressing a
button), the GSU screen displays the next step:
Throttle Trim to
maximum:
- learn RC -
5. For this step of the "learning" process the RPM-slider is moved to the idle (mid). When you
have done this, press a button -> the yellow "OK" LED lights up, and the GSU screen
displays the next step:
Set Throttle to
maximum:
Flashing sequence
48
Helicopter mechanics
with model turbine engine
....
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