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Spektrum SRXL2
Installation instructions
1. Connect the receiver to your fl ight controller as shown in the diagram below.
2. Install the active portion of the antennas (the exposed section at the end of
the antenna wire) as far as possible from metal, carbon fi ber, and wiring.
CAUTION: Do not kink, cut or damage the antenna wire. The antenna
is made of a coaxial wire; if the outer sheath becomes damaged, the
receiver will not work properly.
Binding
The SPM4651T requires a 5 volt power supply from the fl ight controller.
1. Press and hold the bind button on the receiver.
2. Power on the aircraft. The orange LED will begin fl ashing.
3. Put the transmitter into bind mode. The bind process is complete when the
orange LED on the receiver is solid.
Alternatively the SPM4651T receiver may be put into bind mode through the
fl ight controller interface.
Bind Button
Antennas
Signal
N/C
V+
GND
SPM4651T
Type DSMX SRXL2 Serial Telemetry Receiver
Dimensions (L × W × H) 28.2 × 17.3 × 6.6 mm (1.11 × 0.68 × 0.25 in)
Antenna Length 100mm
Weight 3.0g
Band 2.4 GHz
Voltage Range 3.3–8.4V
The SPM4651T uses SRXL2 to communicate with fl ight controllers. SRXL2 is
a serial communication protocol using a bi-directional data link in which one
wire can communicate all control and telemetry data. Previous Spektrum serial
receivers were based on the Spektrum remote receiver protocol, which is not
compatible with SRXL2.
To learn more about the features and benefi ts of SRXL2 visit www.SRXL2.com
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