Physical transmitter adjustments, Transmitter mode conversion, Mechanical conversion – Spektrum SPMR9900 DX9 User Manual

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SPEKTRUM DX9 • TRANSMITTER INSTRUCTION MANUAL

Changing the Throttle Ratchet

1. Remove the eight Phillips head screws including the two

antenna cover screws that secure the rear transmitter case half.

2. Put the transmitter face down on a piece of foam or a towel

and remove the lower back case. Carefully pull the antenna

cover off the top of the transmitter and set the back case

aside.

CAUTION:

Use care to not pull or disconnect any of the

wires attached to the back transmitter half.

3. Locate the silver throttle friction straps on both gimbals. One

strap engages a serrated section on the gimbal for a ratcheted

throttle, while the other strap engages the smooth section on

the gimbal.

4. To change the throttle ratchet, loosen the throttle strap so

it does not touch the throttle gimbal. Tighten the opposite

throttle strap to engage the desired throttle ratchet.

If you only need to adjust the throttle friction, see the Adjust

Throttle Friction Straps section.

PHYSICAL TRANSMITTER ADjUSTMENTS

Transmitter Mode Conversion

You can change transmitter modes among Modes 1, 2, 3 and 4.

This conversion requires both a programming and a mechanical

change.

Programming Conversion:

1. Access the System Settings menu from the Setup List and

select the desired Mode. If you are changing between Modes

2/4 or 1/3, you can STOP after Step 1.

2. Exit the System Settings menu to save the selection.
3. Power off the transmitter and remove the transmitter battery pack.

After you change the transmitter Mode in the Setup List, you will

need to make mechanical changes to the transmitter gimbals.

CAUTION:

Always power off the transmitter, disconnect and remove the battery before adjusting stick tension or friction straps. Not

doing so could result in property damage or injury.

Mechanical conversion is required to change between Modes 1 and 2 or between Modes 3 and 4. The mechanical conversion consists

of the following steps:

1. Change the Throttle Ratchet
2. Adjust the Elevator Centering Screw
3. Move the Throttle Limit Wedges

Mechanical Conversion

This manual is related to the following products: