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JR 11X • RADIO INSTRUCTION MANUAL
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JR 11X • RADIO INSTRUCTION MANUAL
FCC Information
This device complies with part 15 of the FCC rules.
Operation is subject to the following two conditions:
(1) This device may not cause harmful interference,
and (2) this device must accept any interference
received, including interference that may cause
undesired operation.
Caution
: Changes or modifications not expressly
approved by the party responsible for compliance
could void the user’s authority to operate the
equipment.
This product contains a radio transmitter with
wireless technology which has been tested
and found to be compliant with the applicable
regulations governing a radio transmitter in the
2.400GHz to 2.4835GHz frequency range.
ANTENNA SEPARATION DISTANCE
When operating your Spektrum transmitter, please
be sure to maintain a separation distance of at least
5 cm between your body (excluding fingers, hands,
wrists, ankles and feet) and the antenna to meet
RF exposure safety requirements as determined by
FCC regulations.
The illustrations below show the approximate 5 cm
RF exposure area and typical hand placement when
operating your Spektrum transmitter.
APPENDIX
FLIGHT LOG JRPA145 - OPTIONAL
FOR JR R921 ReCeIVeR
The Flight Log is compatible with the JR R921 receiver and many other
compatible receivers. The Flight Log displays overall RF link performance as well
as the individual internal and external receiver link data. Additionally it displays
receiver voltage.
After a flight and before turning off the receiver or transmitter, plug the Flight Log
into the Data port on the receiver. The screen automatically displays voltage e.g.,
6v2= 6.2 volts .
Note:
When the voltage reaches 4.8 volts or less, the screen flashes indicating
low voltage.
Using the flight Log
Press the button to display the following information:
• A - Antenna fades on internal antenna A
• B - Antenna fades on external antenna B
• L - Antenna fades on the left external antenna
• R - Antenna fades on the right external antenna
• F - Frame loss
• H - Holds
Antenna fades—represents the loss of a bit of information on that specific antenna.
It’s typical to have as many as 50 to 100 antenna fades during a flight.
If any single antenna experiences over 500 fades in a single flight, reposition the
antenna in the aircraft to optimize the RF link.
Frame loss—represents simultaneous antenna fades on all attached receivers.
If the RF link is performing optimally, frame losses per flight should be less than
20.
Holds are indicated when 45 consecutive frame losses occur.
This takes about one second. If a hold occurs during a flight, it’s important to
re-evaluate the system. Move the antennas to different locations and/or check to
be sure the transmitter and receivers are working correctly.
Note:
You can use a servo extension to plug the Flight Log in without having
to remove the aircraft’s hatch or canopy. On some models, the Flight Log can
be plugged in, attached and left on the model using double-sided tape. This is
common with helicopters, mounting the Flight Log conveniently to the side frame.
ADvANCED RANGE TESTING
Advanced Range Testing Using a flight Log
For sophisticated aircraft that contain significant amounts of conductive materials
(e.g., turbine-powered jets, some types of scale aircraft, aircraft with carbon
fuselages, etc.) the following advanced range check confirms internal and remote
receivers are operating optimally and the receiver installation is optimized for the
specific aircraft. Before each flying session, and especially with a new model, it’s
important to perform a range check. The 11X incorporates a range testing system
which, when the bind button on the transmitter is pressed and held, reduces the
output power, allowing a range check.
Plug a Flight Log (optional, JRPA145) into the data port in the receiver and turn
on the system (Tx and Rx). Advance the Flight Log until F- frame losses display
by pressing the button on the flight log.
Have a helper hold your aircraft while observing the Flight Log data. Stand 30
paces away from the model and helper. Face the model with the transmitter in
your normal flying position and depress and hold the bind button on the back of
the transmitter. This causes reduced power output from the transmitter.
Have your helper position the model in various orientations (nose up, nose down,
nose toward the transmitter, nose away from the transmitter, etc.) while watching
the Flight Log. Note any correlation between the aircraft’s orientation and Frame
Losses. Do this for 1 minute. You can use the timer on the transmitter.
For giant-scale aircraft, tip the airplane up on its nose and rotate it 360 degrees
for one minute then record the data. Next place the airplane on its wheels and do
a second test rotating the aircraft in all directions for one minute. After one minute
release the bind button. A successful range check will have less than ten recorded
frame losses.
Scrolling the Flight Log through the Antenna fades (A, B, L, R) allows you to
evaluate the performance of each receiver. Antenna fades should be relatively
uniform. If a specific antenna is experiencing a high degree of fades, then that
antenna should be moved to a different location.
A successful Advanced test yields the following:
• H- 0 holds
• F- Less than 10 frame losses
• A, B, R, L- Frame losses will typically be less than 100.
It’s important to compare the relative frame losses. If a particular receiver has a
significantly higher frame loss value (2X to 3X), redo the test. If the same results
occur, move the offending receiver to a different location.
CONTROL STICK TENSION
ADJUSTMENT
Stick tension adjustments are accessible by removing the back half of the
transmitter case. Remove the 6 screws with a medium Phillips screwdriver, then
carefully pull the back half of the transmitter case off gently. Set the case to the
side using care to not damage the wires. Using a small Phillips screwdriver,
adjust each gimbals’ tension screw for the desired tension (counterclockwise to
loosen stick tension; clockwise to tighten stick tension).
1. elevator
3. Rudder
2. Aileron
4.Throttle Tension Adjustment
Control Stick Length
Use a 2mm Allen wrench to unlock the setscrew to adjust the stick length. Turn
the wrench counterclockwise to loosen the screw. Then, turn the stick clockwise
to shorten or counterclockwise to lengthen the overall stick length. After the
control stick length has been adjusted to suit your flying style, tighten the 2mm
setscrew. If you desire longer sticks, JR offers a stick (JRPA047) approximately
one inch longer than standard, and has various length anodized aluminum stick
ends available (JRPA040-JRPA045). These stick ends are crafted from bar stock
aluminum, and are available at your local JR dealer.
Neck Strap Attachment
The face of the 11X transmitter has an eyelet for connecting a Neck Strap.
1.
2.
3.
4.
