Glossay

Analog -

A voltage method that is used to represent data.

Binding Process -

Programming a receiver to recognize the GUID code of only one specific transmitter or transmitter module.

Channel -

Refers to the number of devices that you can plug into a receiver and control; also references the frequency a transmitter broadcasts on.

Collision Avoidance -

A protocol which eliminates the possibility of more than one Direct Sequence Spread Spectrum system from transmitting on the same frequency.

Conformal Coating -

A special treatment applied to the PC Board of Spektrum Pro Series receivers to aid in making them water proof and fuel resistant.

Crystal -

In tradition radios, the crystal is what determines what frequency a radio broadcasts on.

Digital -

A numerical method that is used to represent data.

Dipole -

A twin antenna setup that makes DuaLink possible.

DSM -

Digital Spectrum Modulation; DSM is the 2.4GHz technology that makes Spektrum possible.

DSSS -

Direct Sequence Spread Spectrum. DSSS broadcasts on the 2.4GHz frequency band and generates a wide signal on a single frequency.

ESD -

Electro-Static Discharge. These are extremely high voltages that can build up on various surfaces.

Fading -

The term used to describe data that does not reach the receiver. DuaLink minimizes this possibility.

Failsafe -

A safety feature designed into Spektrum receivers that drives the servo positions to a preset location in the event that signal is lost.

FHSS -

Frequency Hopping Spread Spectrum. These systems usually transmit a narrow band signal and rapidly jump through a fixed set of frequencies, spending a few milliseconds on each frequency.

Frame Loss -

The simultaneous loss of information to both antennas in the aircraft system.

Frame Rate -

The time interval at which the servo data is updated on the receiver.

Frequency -

The specific channel or RF spectrum that a radio broadcasts on. In a traditional RC radio, the transmission crystal resonates when voltage is applied; the rate of this resonation determines the frequency that is broadcast on.

GHz -

Gigahertz. One hertz represents one cycle per second, and a gigahertz is 1,000,000,000 hertz.

GUID -

Globally Unique Identification Code. Each individual module or radio is factory programmed with its own unique serial code. In the binding process, the receiver is programmed to only recognize the GUID code of one specific radio or module.

ISM -

This is another name for the 2.4GHz frequency band. ISM was originally intended for Industrial, Scientific, and Medical use.

Latency -

The time it takes for a servo or ESC to react to an input made on a radio.

MHz -

Megahertz. One hertz represents one cycle per second, and a megahertz is 1,000,000 hertz.

ModelMatch -

A safety feature that prevents a pilot from flying a model when the model selected in the radio is not correct.

Module -

A device that plugs into the back of many radios that determines the broadcast frequency and band.

Monopole -

An antenna with a single wire.

Packets -

A set or group of data that is sent from a transmitter to a receiver in a digital radio system.

PCM/PPM -

Pulse-code modulation and pulse-position modulation. PCM is a method of sampling an analog signal to convert it to a digital one. PPM systems use pulses to transmit specific transmitter inputs. Each pulse represents a position or position change of the controls.

Pro Series -

The second generation of Spektrum surface modules and receivers. With the Pro Series, the receivers feature a conformal coating, latency has been reduced, and new firmware has been developed to prevent ESD issues.

Receiver -

A device mounted into a car or aircraft that receives and decodes a signal sent by a transmitter. Servos,
ESC, and other devices are plugged into the receiver.

Resolution -

Refers to the incremental step size of the data transmitted to the receiver.

Servo -

An electronic device used to actuate steering bellcranks, throttle and brake linkages, or control surface.

Servo Sync -

A resequencing of the data the DX7 transmits based on the type of mixing you select. This feature helps to sync control services that are connected (such as a swash plate on a helicopter) and is used in radios that have many channels.

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