Function List. Spektrum SPM7800C, DX7s 7-Ch, DX7s 7-Ch DSMX Radio System, SPM55101, DX7s Transmitter Only MD2, SPMR7800

FUNCTION LIST

Servo Setup

Servo Setup supports travel adjustment, Sub Trim, and servo reversing. Servo Setup screens feature a servo monitor that shows a visual reference for adjustments.

Travel adjust sets the overall travel or endpoints of the servo. You can use Travel adjust to:

• prevent overthrowing a control surface or blocked movement

• increase or decrease overall control surface throw

• change flight performance of the model

Sub-Trim adjusts the center point for a servo’s travel

CAUTION: Use only small sub-trim values so a servo’s maximum travel (in either direction) is NOT overdriven.

stating “Confirm Throttle Reverse. Are you sure? NO or YES” To confirm, highlight YES and press the roller. A message appears, reminding you to re-bind the system and set a new failsafe. If you do not wish to reverse the throttle, highlight NO and press the roller to prevent the throttle from reversing.

CAUTION: Always test the model after making adjustments to make sure the model responds to controls as desired. Rebind the transmitter to the model and set the failsafe after setting the

Servo Setup.

EN

Servo Reversing is used to reverse the direction of a servo if a control moves in the incorrect direction. When reversing the

Throttle channel, after pressing reverse, a screen will show

D/R & Exponential

Dual Rates and exponentials are available on the aileron, elevator and rudder channels. This adjusts control rates for servos.

Adjust the throws (Dual Rate) and center sensitivity (Expo) of the control’s range independently. Designate a switch for moving between control rates for a servo channel. Move the designated switch to change the position (0 or 1) for Dual Rate and Expo values.

CAUTION: Always test the model after making adjustments to make sure the model responds to controls as desired.

Dual Rate affects the overall travel of a channel affecting control response sensitivity equally throughout the range of that channel. Decreasing the dual rate decreases the maximum control rate as well as overall sensitivity.

Exponential affects control response sensitivity around center but has no affect on overall travel. Positive and negative exponential values are available. We recommend a positive expo value as it decreases control sensitivity around the center and does not affect maximum travel. Negative exponential values increase sensitivity around neutral and are seldom used.

Throttle Cut

The Throttle Cut function is for powering down an engine or motor using a designated switch. Throttle Cut has higher authority than any other flight mode.

When the switch is activated, the throttle channel is driven to its programmed value (normally off).

Test the Throttle Cut function by activating the programmed switch. This effectively stops the engine or motor. Release the throttle cut switch and normal throttle operation resumes. The value of 0% is low throttle with mid trim. You may use negative values.

Make sure the throttle goes to the desired position as shown in the servo monitor on the left side of the screen.

CAUTION: Always test the model after making adjustments to make sure the model responds to controls as desired.

SPEKTRUM DX7s • RADIO INSTRUCTION MANUAL 17