Handleiding Robbe Futaba FX-40 (pagina 61 van 105) (Engels)

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Model menu

Programmable mixers

FX-40

It is also possible to select a mode for the programmable

mixer, i.e. linear (LIN) or symmetrical (SYM) mode; you can

toggle between the two simply by touching the appropriate

field. The linear mode is used for controlling the throttle servo

or a switch; this mode is non self-neutralising. The alternative

(symmetrical) mode is self-neutralising, and is the default set-

ting for use with control surfaces.

• Setting up the Master channel

If you are setting up an ‘Offset’ mixer, no settings have to be

enter

ed at this point. For a normal mixer you should pro-

gram the required values using the following procedure:

First mark the ‘Master’ field. This calls up the function

select menu, where you define the Master channel by tou-

ching the appropriate button field. Press ‘End’ to leave the

sub-menu. The selected channel is now displayed in the

‘Master’ field.

You can program either a control function or any transmitter

control as the Master channel; simply press the ‘H/W’ but-

ton field at bottom right. This calls up the transmitter control

/ switch select menu.

At this point you can select the transmitter control in the

familiar way; your selection is displayed in the ‘Master’ field.

In the screen shot below, for example, the transmitter con-

trol ‘LD’ has been selected.

• Setting up the Slave channel

The settings are entered using exactly the same procedure.

Mark the ‘Slave’ field, determine the Slave function in the

select menu which then appears, and leave the sub-menu

by pressing ‘End’. The selected channel is displayed in the

‘Slave’ field.

• Activating the link function (+/-)

If you wish to link this mixer to another mixer, you have to

activate the fields adjacent to the ‘Master’ and / or ‘Slave’

function display

. The link function is used to chain (cascade)

ogrammable mixers together.

Example: Programmable mixer 1: Rudder ? elevator

Programmable mixer 2: Elevator ? aileron

If you want the rudder function to affect the ailerons as well

as the elevator, then the linked functions have to be set up

as follows:

Programmable mixer 1: Rudder ? elevator +

Programmable mixer 2: + Elevator ? aileron

The link mode can be set from ‘Off’

(default; no display in the field) to ‘+’ or

‘-’. In each case the prefix indicates the

direction of mixing (same-sense or

opposite-sense).

The +/- symbol after the Slave function

also has another purpose: if it is activa-

ted, the mixer affects all servos control-

led by a Slave function which is already

in use by a mixer. In this example this involves both

ailerons; the prefix indicates whether the direction of mixing

is the same or opposed.

• Determining the effect of the trims

The next step is to set up the trim function; at this point you

have to decide how the trims of the two channels ar

e to

ork. ‘Off’ or ‘On’ can be set in the associated ‘Trim’ field. If

set to ‘On’, the trim of the Master channel also affects the

Slave channels. If not, the two channels are de-coupled.

Mark the field to change this setting; the status is shown in

graphic form in each case.

• Defining AFR mode

You now have to determine which AFR mode is to apply to

the Slave channel, i.e. what is known as ‘Stick to stick

mode’ (St ? st) can be switched on and of

f at this point. If

you disable this mode, the Master function affects the Slave

channel directly, without taking into account any special

settings you may have applied to the Master transmitter

control, i.e. it only affects the selected Slave channel. In

contrast, if ‘St ? st’ mode is active, any special settings

applied to the Master transmitter control - such as D/R,

AFR, EXPO etc. - are also applied to the Slave channel. In

this mode the mixer functions also affect any other mixers

involving the Slave channel.

Example: Model type - two ailerons

Mixing elevator to aileron in ‘St ? st’ mode af

fects both

ailer

ons.

Select the mode accordingly, and - if necessary - switch the

mode from ‘Off’ to ‘On’ by marking the appropriate field.

The current status is indicated in the field.

• Setting the display mode

The ‘Display’ button field allows you to choose whether the

graphic screen display is to show data for all flight modes

(All modes), for the currently active flight mode (Separate) or

for fine-adjustment (Fine) simultaneously

. If you wish, you

can see an on-scr

een display of all the information relating

to a particular mixer.

• Carrying out ‘fine-tuning’ adjustments

It is possible to program a transmitter contr

ol which is used

to carry out fine adjustments (fine-tuning) of the mixer set-

tings. Changes ar

e carried out in the ‘Fine-tuning’ frame,

but first you have to define the transmitter control you wish

to use for this purpose; the default is ‘NONE’. Mark the

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