Futaba 8SGAP User Manual download pdf (Page 20)

•USING

ATV (ADJUSTABLE TRAVEL VOLUME)

GENERAL - ATV (Adjustable Travel Volume)

allows independent adjustment of servo maximum

throw in each direction (without affecting the

neutral position). This is also sometimes referred

to as "separate endpoint adjustment". ATV is very

convenient when for example: a model requires

more DOWN elevator deflection than UP for equal

inside and outside loops (with equal control stick

deflection). Other aircraft may require slightly

different RIGHT or LEFT aileron or rudder

deflection to give equal response in each direction

(due to engine torque, precision of the model,

etc.). Two different ATV functions are possible

with this system. Memory (Pushbutton) ATV and

2ND

ATV.

MEMORY (PUSHBUTTON) ATV

This type of ATV is available on all eight channels.

Servo travel is adjusted as outlined in the example

below.

NOTE: Memory ATV settings are retained in the

transmitter memory circuit even when the power

switch is turned OFF. They are lost however, if

the transmitter Nicd battery nears full discharge or

is removed for servicing.

ATV SETTING

Switch switches (S), [49] and (R) [48]

Fig.

MEMORY (PUSHBUTTON) ATV - (Aileron CH1

used as example)

First,

set Function Select Switch [49] to ATV

position.

Set Channel Select Switch [48] to 1 (Ail.).

Set the transmitter and receiver power switches

ON and check for proper servo operation.

Move the Aileron stick to full RIGHT aileron,

hold it in that position, and set servo movement

to the desired Right aileron deflection angle by

pressing Button [46] or 47.

Repeat Step 4 for LEFT aileron.

For other channels,

select

the channel

with

switch 48 and adjust ATV as desired.

When all adjustments are completed, set the

Function Select and Channel Select switches

([48]and [49]) to OFF.

To clear the ATV settings on all channels, set

the Function Select switch [49] to RESET and

Channel Select switch 48 to POSITION 2 (Pos.

2 = ATV when 49 is on RESET) and press

Buttons 46 and 47 simultaneously. ATV is

cleared

ALL

CHANNELS and

servos

will

move to 100% of their maximum throw.

If only one channel is to be cleared or changed,

simply repeat Steps I through 5 with Chan-

nel Select Switch [48] set to the appropriate

channel.

ATV/FS BUTTON

•These two pushbutton switches are used for servo deflection angle setting of ATV, FS or HOLD func-

tion,

servo

test

start

stop;

reset; battery

memory set, etc.

Fig.

This pushbutton switch is used when:

Making the ATV servo deflection angle larger.

Turning the FS function on.

Starting the servo test.

This pushbutton switch is used when:

Making the ATV servo deflection angle smaller.

Turning the HOLD function on.

Stopping the servo test.

When button 46 and 47 are pressed at the same

time, reset or battery FS memory setting is pos-

sible. At this time, lamp A of memory lamps 22

goes out momentarily so that setting can be moni-

tored.

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Futaba 8SGAP User Manual Page 20

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