Hitec Fusion 9 User Manual download pdf (Page 2)

Operating Instructions Hitec Receiver FUSION 9 72MHz

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9.1 Automatic servo channel count detection

When the RF channel is set, the receiver also detects the how many servo

channels are transmitted (e.g. PPM 5, PPM 9), and stores this information.

Every time the receiver is switched on, it checks the servo channel count

and compares it to the stored value. If the two are not the same, the

receiver remains inactive.

LED Code 1

LED ON

! Note:

Every time there is a change in the transmitter‘s servo channel count

or operating mode (also when a different transmitter is used), the RF

channel must be re-set (Î 9. ). The FAIL-SAFE settings (Î 11. ) must

also be set again!

9.2 Automatic Shift switching

The FUSION 9 receiver can be operated with positive Shift (e.g. JR,

AIRTRONICS, MULTIPLEX) and negative Shift (e.g. HiTEC, Futaba). The

receiver automatically sets itself to the appropriate Shift while setting the

channel. If you wish to use a transmitter with different Shift, you must re-set

the RF channel (Î 9. ).

10. IPD (INTELLIGENT PULSE DECODING)

The FUSION 9 receiver feature an IPD decoder; the abbreviation IPD

stands for Intelligent Pulse Decoding. The “intelligence” takes the form of a

micro-processor which analyses the signals picked up from the transmitter,

processes them (where necessary) and then passes them on to the

servos. The received signals are not simply passed on directly to the

servos, as with conventional FM/PPM receivers, but are checked for

interference and validity.

For a full description of IPD technology, please visit www.multiplexusa.com

11. ACTIVATING FAIL-SAFE

The effect of FAIL-SAFE setting is that if interference occurs the servos

take up a pre-defined position, previously stored in the receiver. If FAIL-

SAFE has not been activated (factory default state, or after a RESET (Î

13.), the signal is switched off after the HOLD period (0.5 sec.). This

means that the servos become “soft” and remain in their last commanded

position under no load (this may equate to full-throttle!) until a valid signal

is picked up again.

! Note:

In the interests of safety we recommend that FAIL-SAFE should always be

activated, and the FAIL-SAFE settings should be selected so as to bring

the model to a non-critical situation (e.g. motor idle / electric motor OFF,

control surfaces neutral, airbrakes extended, aero-tow release open, …).

Sequence

1. Switch on the transmitter, then the receiver. The LED flashes:

1,6 sec

LED Code 3

2. Move all the transmitter sticks and other controls to the desired FAIL-

SAFE positions (e.g. motor idle, control surfaces neutral).

3. Press the button briefly (approx. 0.5 seconds); the LED goes out.

⇒ FAIL-SAFE is now active, and the FAIL-SAFE settings are stored.

Note:

If you hold the button pressed in for too long (> 2 sec. - until the LED

comes on), the IPD filter is switched off (Î 12. ).

In this case FAIL-SAFE is not activated, and the FAIL-SAFE settings

are not stored!

4. Testing the FAIL-SAFE settings

Move the sticks to positions other than the FAIL-SAFE settings, then

switch off the transmitter. The servos should now move to the FAIL-

SAFE settings previously stored, once the HOLD period (0.5 sec.) has

elapsed.

Notes:

• The FAIL-SAFE settings are only stored if the IPD filter is active, and if

no errors are displayed:

1,6 sec

LED Code 3

• If the transmission mode is changed (e.g. by using another TX 7ch Æ

9ch), you must re-set the FAIL-SAFE positions! (see also Î 9.1. )

• The FAIL-SAFE settings must always be checked and brought up to

date if, for example, you install the receiver in a new model, or make

an accidental mistake in programming the receiver (Î 11.4 ).

• The maximum FAIL-SAFE duration is limited to 15 seconds. After this

the servo signal is switched off ⇒ the servos become “soft”, an electric

motor speed controller switches off the motor in the absence of a sig-

nal.

This eliminates the danger of jammed mechanical linkages stalling the

servos (e.g. after a collision), which would usually wreck them.

12. SWITCHING OFF THE IPD FILTER

The IPD filter (Î 10. ) can be switched off if necessary. In this mode the

receiver operates like a conventional FM/PPM unit, i.e. the signals picked

up are passed directly to the servos (etc.). This can be useful, for example,

to locate sources of problems to the receiver caused by the power system,

or the arrangement of the receiving system components. The filter should

always be switched off for range-checking, so that it does not filter out any

interference (undesirable in this case). Changes can then be made as

required.

Sequence

1. Switch the transmitter on, then switch the receiver on. The LED

flashes:

1,6 sec

LED Code 3

2. Press the button (the LED goes out), and hold it pressed in until the

LED comes on again (after about 2 seconds).

The LED then flashes as follows:

LED Code 4

1,6 sec

You can re-activate the IPD filter by either of the following methods:

• Switch the receiver off, then on again

• Hold the button pressed in again for > 2 seconds (see above)

! Note:

In the interests of safety the IPD filter should only be switched off for range

checks or other experimental purposes. Normal operations should always

be carried out with the IPD filter activated.

13. RECEIVER RESET

The receiver settings can be switched back to the factory default values. All

settings (e.g. RF channel, FAIL-SAFE settings) are lost when you do this,

and are reset to the factory defaults.

Sequence

1. Switch the transmitter on, then switch the receiver on. The LED

flashes:

1,6 sec

LED Code 3

2. Press the button and hold it pressed in until the LED goes out - after

about 10 seconds.

The LED now flashes the confirmation signal:

1,6 sec

LED Code 5

The signal output is switched off after you carry out a RESET. The receiver

can only be used again after switching it off, then on again (Î 8. ).

A RESET can also be triggered without a transmitter signal. For this to

work an RF channel must have been set previously.

14. INSTALLATION NOTES

• You should pack your receiver loosely in foam or similar material to

protect it from vibration - especially with internal combustion motors.

• Install the receiver at least 6” away from electric motors, ignition sys-

tems and other electronic components. The receiver aerial should not

run immediately next to these components.

• Brushed electric motors must be effectively suppressed.

• Use separation filters if you are using servo extension leads longer

than 24”.

• Do not alter the length of the aerial.

• Route the aerial out of the model and extend it in as straight a line as

possible. Do not leave it coiled up.

• Do not deploy the receiver aerial parallel to servo leads, high-current

cables or electrically conductive components (e.g. pushrods).

• Do not deploy the aerial inside or over model components which are

skinned or reinforced with conductive materials (e.g. carbon fibre, me-

tallic paints etc.), as they have a shielding effect.

15. CARRYING OUT A RANGE CHECK

It is very important to carry out regular range checks to ensure that the

radio control system works reliably. These checks also allow you to detect

problems and sources of interference in good time. This applies in

particular when:

• you are using new or altered components, or you have changed the

arrangement of components in the model;

• you are using radio control system components which were involved in

a previous hard landing or crash;

• irregularities or problems have arisen during previous flights.

Important:

• For a range check install the telescopic transmitter aerial but leave it

completely collapsed.

The range of the FUSION 9 receiver with transmitter aerial collapsed down

to a single segment should be at least 150’. We recommend that you

disable the IPD filter for range-checking, so that interference and irregulari-

ties are not suppressed. You have reached the range limit when the servos

begin to jitter and move uncontrollably. Important:

Carry out the initial range check with the motor or engine stopped. Repeat

the check with the power system operating (all throttle settings): the range

should not be significantly reduced. If it is much lower, seek out and

eliminate the cause of the problem (motor interference, arrangement of the

receiving system components and power supply, vibration, etc.).

LED CODES

LED Code 0

LED OFF

Î 8.

LED Code 1

LED ON

Î 8. /

Î 9.

LED Code 2

1,6 sec

Î 9.

1,6 sec

LED Code 3

Î 8.

LED Code 4

1,6 sec

Î 12.

1,6 sec

LED Code 5

Î 9. /

Î 13.

1 2

LED Code 1 1
LED Code 5 2

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