User's Manual

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90478 2.4GHZ FH4T RADIO SYSTEM USER'S GUIDE
Battery Compartment: Houses the four 'AA' Alkaline cells that power the transmitter. Alternatively, the transmitter can be
powered using four 'AA' NiCd or NiMH rechargeable batteries or a 2S LiPo or 2S LiFe battery pack.
Binding: The act of pairing the transmitter and receiver to prevent interference from transmitters operated by other users. The
transmitter and receiver must be paired so that the two can 'talk' to each other. Once the Binding process is complete, the
setting is remembered even when the transmitter and receiver are turned OFF.
Bind Button: Used in the process of Binding the transmitter and receiver.
Bind LED: Displays the current status of the receiver.
Brake Side: Refers to the throttle trigger stroke that engages the brakes on your model (pushing the throttle trigger).
Burn: Used with the Motor on Axle function (dual ESCs), the front motor is inhibited while keeping full control of the rear motor
during rock crawling.
Center Trim Type: A Trim technology, that when selected, the servo End Points remain stationary when you apply Trim using
the Trim Switches. This can result in unbalanced servo travel. In order to balance servo travel, servo End Points need to be
manually readjusted.
Channel Set: Allows you to make programming changes to each of the four channels without the need to enter each Programming
Menu separately.
Charging Jack: Used for onboard charging of optional NiCd or NiMH batteries. Do not attempt to charge Alkaline batteries.
Only the recommended Airtronics 110v AC charger should be used through the Charging Jack. If using an after-market
Peak-Detection charger or other type of fast charger, the batteries should be removed from the transmitter to avoid damage
to the transmitter circuitry and/or your batteries. Do not attempt to charge a LiPo or LiFe battery pack through the Charging Jack.
Coaxial Cable: The portion of the receiver antenna that extends the Antenna Reception Wire. The Coaxial Cable can be bent
into gentle curves, however, do not bend it acutely, or repeatedly bend it, or the antenna core can be damaged. The Coaxial
Cable should be installed into a nylon tube (antenna tube) and positioned vertically in your model for the best reception.
Code Auxiliary: A function designed for use with future connected products, such as an ESC, whose Programming Parameters
can be changed directly via the transmitter.
Countdown Timer: Used to notify you of your model’s running time. For example, you can set the Countdown Timer to alert you
when it's time to refuel. When the Countdown Timer expires a long audible tone will sound and the Count Up Timer function
begins automatically. This allows you to check the time elapsed since the timer ran out.
Dial Knob: The Dial Knob can rotate 360º and is programmable to perform a different function depending on what function is
assigned to it. For example, it can be used to increase and decrease Programming Values, control a Trim function or control
an Auxiliary Channel.
Dig: Used with the Motor on Axle function (dual ESCs), the rear motor is inhibited while keeping full control of the front motor
during rock crawling.
Digital RPM Display: Displays the current RPM from the RPM Sensor in digital format on the Telemetry Screen.
Digital Temperature Display: Displays the current temperature from the TEMP1 and TEMP2 Temperature Sensors in digital
format on the Telemetry Screen.
Digital Trim Memory: Allows the transmitter to store Trim values in its memory. Any amount of Trim that you set during use
using the Trim Switches is automatically stored in memory for that specific channel and for that specific model. The Trim values
for each model will automatically be loaded when the transmitter is turned ON.
Digital Voltage Indicator: Indicates the current Voltage of the transmitter batteries on both the Top Menu and the Telemetry
Screen.
Dual Rate: The Dual Rate function allows you to change the control authority of the Steering, Throttle High Side and Throttle
Brake Side by changing the amount of servo travel relative to control input. For example, by increasing the Steering Dual Rate,
you can make the steering servo travel more which might prevent your model from pushing during turns. If your model
oversteers during turns, you can reduce the amount of Steering Dual Rate.
End Point Adjustment: Used to adjust the desired amount of servo travel in both directions independently. This makes it possible
to balance servo travel in both directions.
Enter Key: Opens the selected menu or programming option. Press and HOLD to reset the selected programming option to
its default value.
Exponential: Allows you to vary the amount of servo travel in relation to the movement of the steering wheel, throttle trigger
and auxiliary lever near the Neutral positions to change the way those functions react to control movement. The position that
the Rate can be controlled from is fixed.
Fail Safe: Automatically moves the servos to a predetermined position in the event that the signal between the transmitter and
the receiver is interrupted, whether due to signal degradation or low transmitter battery.
FH2 Modulation: Frequency Hopping 2nd generation FHSS technology. FH2 Modulation is used in legacy Airtronics 2.4GHz
FHSS-2 transmitters and receivers, such as the Airtronics M11, M11 FHSS-2, and MX-3FG radio control systems.
GLOSSARY OF TERMS
REFERENCE
REFERENCE
MT-4S User's Guide.indd 73 2015/10/27 14:39:20