Radio Setup

Internal FrSky Alarm

An alarm generated inside the transmitter from telemetry received by an FrSky transmitter module.

SD Card

A standard Secure Digital non-volatile memory card, in this case in micro format. It typically has a minimum capacity of 2GB but may be larger. It is used to store sound files for use by the radio , firmware files for uploading to the radio and other information such as manuals in PDF format.

BMP

Bitmap image files. These are in raster image file format (128 x 64 pixels, 2-bit monochrome) and are used for the splash screen. They can be transferred to the radio by using Eepskye to embed them in the firmware and then uploading to the radio.

Sounds

Monophonic sound track recordings sampled at up to 32kHz and saved in Waveform Audio (.wav) file format.

Trainer Multiplier

A value used to adjust the stick outputs of the student’s transmitter (Slave) to meet the requirements of the instructor’s transmitter (Master).

SVN

Subversion Number, part of a record keeping process used in software development, to keep track of multiple source code revisions over time.

VERS

The firmware version number stored in the transmitter’s EEPROM non-volatile memory.

MOD

Which modification to the firmware is installed.

Haptic Strength

The strength of the tactile feedback vibration used for alarms.

BT baud-rate

Bluetooth wireless transmission data exchange rate; set to match the receiving media device.

Model Setup

Voice Index

Number of the voice file on the SD card used to make an announcement when the model is selected or the radio is turned on.

Trim Inc

Increment by which trim settings change for each press of the trim button.

Trim Sw

Switch used to trigger the “InstaTrim” feature, thereby converting stick deflections to subtrim values in the Limits screen and resetting neutrals.

Timer 1, 2

Two timers which can count up or down and can be started and stopped by a physical or virtual switch.

THs, TH%

Timer functions that use the throttle stick as the source. THs causes the timer to run when the stick is off idle. TH% adjusts the timer rate according to the throttle percentage.

T-Trim

Throttle Trim, which applies to the lower half of the stick throw only. This is used for fuel powered models only. Electric models normally do not use throttle trim.

T-Expo

Applies expo to the throttle curve across the whole range, rather than to each side of the centre point as the other controls require.

Auto Limits

Amount by which subtrim settings can over-ride the limits in order to keep the throw equal on both sides of centre.

Minute call

Timed voice enunciation of the timer count via loud speaker or audio jack.

RF

Radio Frequency transmission circuit used to send signals over the air between transmitter and receiver.

Failsafe mode

Transmitter mode which allows the receiver's failsafe settings to be changed from the transmitter. Functions only with certain RF module/receiver combinations.

PPM

Pulse Position Modulation, the usual way of sending digital signals by radio frequency (RF) transmission for radio control purposes. Each assembly of pulses for one cycle of data constitutes the PPM frame.

PPM frame

Assembly of pulses for one cycle of data in PPM transmission. The length is measured in milliseconds. The frame length, pulse spacing and polarity can be set in the transmitter to match the requirements of the module and receiver.

Heli Setup

Swash Type

Swash-plate design configuration in degrees: 90, 120, 120X (same as 120, but with the swash plate turned 90 degrees) or 140.

Collective Source

Virtual channel to be used on the MIXER page for pitch curve(s).

Swash Ring

Sets limits on swash servo travel. A physical swash ring is a circular metal plate which restricts stick travel to the same distance in all directions. This software function emulates its action.

Long cyc. Direction

Longitudinal Cyclical Direction refers to ELE action, which can be Normal (---) or Inverse (INV).

Lateral cyc. Direction

Lateral Cyclical Direction refers to AIL action, which can be Normal (---) or Inverse (INV).

Coll. Pitch Direction

Collective Pitch direction, which can be Normal (---) or Inverse (INV).

Flight Modes

FM0

Default flight mode.

FM1-FM6

Six additional flight modes that can be assigned to unique switch positions/ combinations.

Expo/DR

Exponential and Dual Rate

Rud, Ele, Thr, Ail

The four gimbal stick axes, which can independently be assigned: Weighting (gain/rate) and Exponential. Ultimately, these stick inputs are assigned to output channels in the Mixer menu.

Weight

Percentage gain or rate used to determine the amount of servo throw.

Expo

Exponential This is a mathematical exponential function applied to stick travel each side of centre. In most transmitters, including those using Ersky9x, positive expo reduces stick sensitivity around neutral (note: in Futaba transmitters, this same action is called negative expo).