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1.0 Receiver overview
1) Full-Range telemetry and receiver with diversity antenna capable of transmitting or receiving
signal via both antennas for diversity scheme with maximum
2) Receiver sensitivity maximized for retrieving data with very weak RF signal by the newly
designed LNA stage. Majority of users should experience very noticeable range improvement
over pervious succession of Lemon Rx receiver or ANY brands of DSM2, DSMX or DSMX
compatible receivers for the same class.
3) Included sensors / interface: Receiver voltage, Battery voltage, Temperature (Internal
automatically selected when external temperature probe is not used), RSSI out (3V to 0V)
4) Optional sensors: Current sensing with up to 60A available for purchase in Lemon Rx website
under accessories page.
5) True RSSI (0 to 100) displayed on transmitter under flight log page in parameter "A".
(*Approximately 7dBm / count after the LNA stage.)
6) Extended antennas for many type of applications (Receiving element is the last 32mm of the
antenna wire with semi-transparent white PVC shield)
7) For use with channel 7 (AUX2), servo can be connected after binding or a Y-cable can be used
to connect to servo and bind plug when binding is required.
8) See label for PPM connection if the receiver is set as PPM mode to work with 3
controller.
PPM-J output format is in the following sequence with indication of solid blue LED:
Throttle, Aileron, Elevator, Rudder, Gear, Aux1, Aux2
PPM-F output format is in the following sequence with indication of flashing blue LED:
Aileron, Elevator, Throttle, Rudder, Gear, Aux1, Aux2
*This is not guaranteed but may be used as approximate figure as being the receiver signal
strength in terms of dBm
coverage.
rd
party flight

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Summary of Contents for Lemon Rx DSMX Series

  • Page 1 3) Included sensors / interface: Receiver voltage, Battery voltage, Temperature (Internal automatically selected when external temperature probe is not used), RSSI out (3V to 0V) 4) Optional sensors: Current sensing with up to 60A available for purchase in Lemon Rx website under accessories page.
  • Page 2 Button Satellite connection (Satellite is not Temp/RSSI out available under PPM-J / PPM-F mode) V/I sensing Signal rail Vcc rail Gnd rail Figure 1 – Receiver overview...
  • Page 3 2.0 Binding Figure 2.1 – Bind plug inserted with power disconnected Figure 2.2 – Solid red light indicates successful binding 1) Insert bind plug with no power connected (Figure 2.1) 2) Provide power via BEC. Observe red LED flashing beneath the receiver for engaging binding mode.
  • Page 4 3.0 Failsafe Failsafe will be activated while receiver is unable to receive signal for approximately 1 second. User preset failsafe position will be available to all 7 channels until valid signal is received to resume transmitter control. 1) Follow binding procedure from 2.1 to 2.3. DO NOT remove bind plug or power at this point. 2) Adjust the transmitter stick position (all 7 channels’...
  • Page 5 4.0 Telemetry / RSSI The receiver will start to transmit telemetry packet to any Spektrum / Spektrum compatible transmitter with telemetry option. It is important to enable the transmitter’s telemetry option in order to monitor the following parameter. - Battery voltage (Require voltage sensing wire to be connected to battery V+. Provided as standard accessories) - Receiver voltage (Automatic, no sense lead required) - Temperature (For maximum accuracy, the provided temperature sensor should be...
  • Page 6 5.0 Voltage sensing wire connection or re-calibration Receiver is pre-calibrated for voltage sensing and voltage sensing wire is provided as a standard item. If for some reasons the voltage sensing wire needs to be calibrated, please follow the procedure listed below. Figure 5.1 –...
  • Page 7 1) Insert bind plug vertically at bind location just like the normal binding procedure with no power connected. 2) Insert 2 bind plug horizontally between aileron and rudder. 3) Connect the voltage sensing wire to 8.4V. A 2 cells, full charged Lithium battery is very close to 8.4V.
  • Page 8 6.0 Voltage and current sensing calibration Receiver is NOT pre-calibrated for use with the Lemon Rx V/I (battery voltage and current sensing) sensing module. When user purchase this sensor for the first time, the following calibration procedure should be done once.
  • Page 9 1) Insert bind plug vertically at bind location just like the normal binding procedure with no power connected. 2) Insert 2 bind plug horizontally between aileron and rudder. 3) Connect the V/I sensor to 8.4V. A 2 cells, full charged Lithium battery is very close to 8.4V. User may follow the connection as in figure 6.1 for simplified hookup when a high precision voltage source with 10A output capability is unavailable.
  • Page 10 7.0 PPM mode (PPM-J/PPM-F) or Servo mode The receiver is shipped with preset in servo mode. User may change it to PPM-J or PPM-F format for 3 party flight controller. See label for PPM connection. Please note that when PPM is enabled, satellite will have no effect to the receiver as a diversity receiving device when PPM-J or PPM-F mode is set.