Spektrum SPMAR7100 - Manual (Page 5)

Spektrum AR7100 7 Spektrum AR7100 8
Installation Installation (continued)
• Mount the Receiver unit in the position recommended by the
helicopter manufacturer. Foam or thick double-sided tape is
recommended to isolate the receiver from vibration.
• Mount the switch and insert the switch plug into the port in the
main unit marked SWITCH. Note: The AR7100/AR7100R uses a
specifically designed switch. Conventionally wired switches are not
compatible with the AR7100.
• Using the battery capacity guidelines select the battery system
that best fits your application and install the battery in your heli.
Connect the battery to the receiver’s EC3 connector. Spektrum
batteries are pre-wired with an EC3 connector and plug directly in.
If using another brand of battery it will be necessary to solder EC3
connectors to the battery leads.
• Using double-sided foam tape and tie wrap, mount a minimum
of 1 and up to 2 remote receivers in your aircraft and plug them
into the receiver ports. NOTE: It’s necessary that one receiver be
plugged into port B or R in order to operate. The receiver should
be mounted at least 2” away from the main receiver with the
antennas perpendicular.
Important: Normally, the pickup is mounted touching the backplate
of the engine. If your system is not limiting RPM in flight, re-position
the sensor .5 to 1mm away from the back plate. This can be easily
accomplished by loosening the 2-56 button head screw on the
sensor mount, re-adjusting the position, and then tightening. This
should resolve the issue.
Note: Threadlock must be used on the screws. The rpm sensor
bracket is adjustable for 50-size or 90-size engines by extending
or retracting the rpm sensor and fastening the screw in place.
• Plug the servo leads and rpm sensor into the appropriate ports in
the receiver.
• You are now ready to bind the system.
Note: In order for the system to operate, one remote receiver must be
plugged into receiver port B or R.
Connections
Note: The throttle and gear channels have two outputs. Output 1 is
unregulated and the pack voltage is provided at this port. Throttle and
Gear outputs 2 are regulated to 5.2 volts when a throttle servo and
gyro are used that are not compatible with high voltage. (Most gyros
require less than 6 volts.)
.
Bracket adjusted for 50-size engine Bracket adjusted for 90-size engine
• If using the RevLimit Limiter (AR7100R only) mount the rpm
sensor and bracket to the backplate under two backplate screws of
your engine as shown.