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{{DISPLAYTITLE:PARAMETER MENU - Special parameters C to K|noerror}}

{{DISPLAYTITLE:PARAMETER MENU - Special parameters C to K|noerror}}

{{TOC_AR7210V5|Manuals:AR7210FblV5:ControlStyle/en|Manuals:AR7210FblV5:Gains/en|PARAMETERMENU}}

{{TOC_AR7210V5|Manuals:AR7210FblV5:ControlStyle/en|Manuals:AR7210FblV5:Gains/en|PARAMETERMENU}}

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The points C to K of PARAMETER MENU offer a variety of settings which you may use to further improve the system performance and which allow you to adjust the flight characteristics of the helicopter to suit your personal preferences. Normally for the first flight you don‘t need to make any adjustments here.<br />

The points C to K of PARAMETER MENU offer a variety of settings which you may use to further improve the system performance and which allow you to adjust the flight characteristics of the helicopter to suit your personal preferences. Normally for the first flight you don‘t need to make any adjustments here.<br />

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=Adjustment at the device= <!--T:2-->

=Adjustment at the device=

When the AR7210BX receiver is ready for operation, hold down the button until the Menu LED next to point A flashes quickly, then release the button immediately. The flashing menu LED A shows that you've entered menu point A of PARAMETER MENU. To skip to the setting you like to adjust, repeatedly press the button until the corresponding Menu LED flashes. The current setting of this menu point is shown by color and state of the Status LED. Tapping the rudder stick left/right you can decrease/increase the value. If you don't like to use one of the presets, you can edit each setting with the StudioX software/StudioXm app to your likings. In this case when your custom setting does not match the presets the Status LED will stay '''off''. You can still choose one of the presets by tapping the rudder stick, but this will erase your custom setting.<br />

When the AR7210BX receiver is ready for operation, hold down the button until the Menu LED next to point A flashes quickly, then release the button immediately. The flashing menu LED A shows that you've entered menu point A of PARAMETER MENU. To skip to the setting you like to adjust, repeatedly press the button until the corresponding Menu LED flashes. The current setting of this menu point is shown by color and state of the Status LED. Tapping the rudder stick left/right you can decrease/increase the value. If you don't like to use one of the presets, you can edit each setting with the StudioX software/StudioXm app to your likings. In this case when your custom setting does not match the presets the Status LED will stay '''off''. You can still choose one of the presets by tapping the rudder stick, but this will erase your custom setting.<br />

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=Setup with StudioX= <!--T:4-->

=Setup with StudioX=

Please note that editing parameters is only possible when the device has initialized completely. So as long as the system is not in operation mode the button to open the "Parameters" section is greyed out. If it does not pass initialization sequence check the device status shown in the middle of the screen. If the system does not finish "Receiver init" check the receiver settings and radio setup. If the system does not finish "Sensor init" make sure that it is perfectly standing still and that power supply is stable.<br />

Please note that editing parameters is only possible when the device has initialized completely. So as long as the system is not in operation mode the button to open the "Parameters" section is greyed out. If it does not pass initialization sequence check the device status shown in the middle of the screen. If the system does not finish "Receiver init" check the receiver settings and radio setup. If the system does not finish "Sensor init" make sure that it is perfectly standing still and that power supply is stable.<br />

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=Parameter explanation= <!--T:6-->

=Parameter explanation=

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== Speed flight stability (Point C)== <!--T:7-->

== Speed flight stability (Point C)==

When in fast forward flight apply jerky collective pitch inputs to test this parameter. The helicopter should mainly remain in its horizontal flight path during climbing and descending. If the nose of the helicopter is pitching up and down heavily like a swimming dolphin, increase the setting to compensate for this effect. But if the value is too high, the helicopter might feel sluggish and lazy. So it's best to try finding the lowest suitable setting. Note that the Cyclic Gain (usually set by Dial 1) must be set as high as possible as well. Otherwise the pitching up just may be the result of too low reaction of the gyro system in general.<br />

When in fast forward flight apply jerky collective pitch inputs to test this parameter. The helicopter should mainly remain in its horizontal flight path during climbing and descending. If the nose of the helicopter is pitching up and down heavily like a swimming dolphin, increase the setting to compensate for this effect. But if the value is too high, the helicopter might feel sluggish and lazy. So it's best to try finding the lowest suitable setting. Note that the Cyclic Gain (usually set by Dial 1) must be set as high as possible as well. Otherwise the pitching up just may be the result of too low reaction of the gyro system in general.<br />

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== Rudder rate consistency (Point D) == <!--T:8-->

== Rudder rate consistency (Point D) ==

At PARAMETER MENU point D the rudder rate consistency can be adjusted. This parameter comes into play when the tail gyro is operated in HeadingLock mode. It determines how hard the tail gyro tries to maintain a given rotation rate from the transmitter. If the value is set too low, pirouettes will be inconsistent during fast forward flight or in crosswind conditions and the helicopter will slowly drift on the vertical axis when in stationary hovering flight with crosswinds. If on the other hand the setting is too high, the tail gyro will respond delayed to fast directional changes and the rudder stick control feels very inprecise. Additionally the tail might make a slow bounce after stopping from a rotational movement and commute gently while hovering or flying around. So only adjust this parameter as high as necessary.<br />

At PARAMETER MENU point D the rudder rate consistency can be adjusted. This parameter comes into play when the tail gyro is operated in HeadingLock mode. It determines how hard the tail gyro tries to maintain a given rotation rate from the transmitter. If the value is set too low, pirouettes will be inconsistent during fast forward flight or in crosswind conditions and the helicopter will slowly drift on the vertical axis when in stationary hovering flight with crosswinds. If on the other hand the setting is too high, the tail gyro will respond delayed to fast directional changes and the rudder stick control feels very inprecise. Additionally the tail might make a slow bounce after stopping from a rotational movement and commute gently while hovering or flying around. So only adjust this parameter as high as necessary.<br />

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==Stick deadzone (E)== <!--T:9-->

==Stick deadzone (E)==

The deadzone defines the range around the very center of the stick in which the AR7210BX receiver will not react to stick inputs. Unfortunately, some on the market available transmitters have the problem that when the sticks are brought back to the center position after a stick input, they aren’t exactly at the same center position as before. This generates a continuous deviation on the corresponding function, although the stick seems to be at mid position. This deviation is interpreted as a small input by the receiver which leads to an unwanted drift on one or more axis. Especially you can see and feel this in hovering flight when the helicopter is turning slightly to one or another direction all the time. This makes it difficult to have precise hovering as it is hard to find a stick position at which no input is sent to the AR7210BX. This can be very dangerous as it may cause the helicopter to tip over when trying to take off or it can cause the pilot to loose control over the helicopter at all! So increase the stick deadband stepwise just until you don‘t see such effects. Note that as a result of large stick deadband there will be a wide range around mid stick position in that the receiver will not react to stick inputs. This will make the control more inprecise. So if using “large“ or “very large“ deadband is necessary, we recommend to let your transmitter get checked by its manufacturer for damaged or worn out stick potentiometers.<br />

The deadzone defines the range around the very center of the stick in which the AR7210BX receiver will not react to stick inputs. Unfortunately, some on the market available transmitters have the problem that when the sticks are brought back to the center position after a stick input, they aren’t exactly at the same center position as before. This generates a continuous deviation on the corresponding function, although the stick seems to be at mid position. This deviation is interpreted as a small input by the receiver which leads to an unwanted drift on one or more axis. Especially you can see and feel this in hovering flight when the helicopter is turning slightly to one or another direction all the time. This makes it difficult to have precise hovering as it is hard to find a stick position at which no input is sent to the AR7210BX. This can be very dangerous as it may cause the helicopter to tip over when trying to take off or it can cause the pilot to loose control over the helicopter at all! So increase the stick deadband stepwise just until you don‘t see such effects. Note that as a result of large stick deadband there will be a wide range around mid stick position in that the receiver will not react to stick inputs. This will make the control more inprecise. So if using “large“ or “very large“ deadband is necessary, we recommend to let your transmitter get checked by its manufacturer for damaged or worn out stick potentiometers.<br />

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==Torque precompensation/RevoMix (F)== <!--T:10-->

==Torque precompensation/RevoMix (F)==

The advantage of always knowing the collective and cyclic inputs allows the AR7210BX receiver to help the tail gyro holding the tail in position. It can precompensate for the torque variations on the tail rotor, just before any noticeable deviation occurs. This method of torque precompensation (RevoMix) relieves the tail control loop and improves the tail performance, especially when using the AR7210BX on helicopters with insufficient tail authority and/or extreme motor torque (e.g. overpowered electric helicopters) where the tail does blow out for a short moment when applying a sudden collective or cyclic input.<br />

The advantage of always knowing the collective and cyclic inputs allows the AR7210BX receiver to help the tail gyro holding the tail in position. It can precompensate for the torque variations on the tail rotor, just before any noticeable deviation occurs. This method of torque precompensation (RevoMix) relieves the tail control loop and improves the tail performance, especially when using the AR7210BX on helicopters with insufficient tail authority and/or extreme motor torque (e.g. overpowered electric helicopters) where the tail does blow out for a short moment when applying a sudden collective or cyclic input.<br />

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==Cyclic response (G)== <!--T:11-->

==Cyclic response (G)==

With point G can be set how aggressive the AR7210BX receiver responds to cyclic control commands (roll and pitch). This can reduce the usual uniform and linear control feeling of flybarless systems and approach it to the feeling of a flybared helicopter.<br />

With point G can be set how aggressive the AR7210BX receiver responds to cyclic control commands (roll and pitch). This can reduce the usual uniform and linear control feeling of flybarless systems and approach it to the feeling of a flybared helicopter.<br />

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==Pitch boost (H)== <!--T:12-->

==Pitch boost (H)==

PARAMETER MENU point H allows you to setup the collective pitch boost function. This function causes that the faster you move the thrust stick, the more additional collective pitch will be exposed. This can be especially useful in 3D aerobatics when very rapid collective pitch changes are necessary for certain flight maneuvers, as hereby dynamically the required control stick deflection will be reduced. However, the maximum pitch value will not be exceeded.<br />

PARAMETER MENU point H allows you to setup the collective pitch boost function. This function causes that the faster you move the thrust stick, the more additional collective pitch will be exposed. This can be especially useful in 3D aerobatics when very rapid collective pitch changes are necessary for certain flight maneuvers, as hereby dynamically the required control stick deflection will be reduced. However, the maximum pitch value will not be exceeded.<br />

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==Throttle response (I)== <!--T:13-->

==Throttle response (I)==

Use PARAMETER MENU point I to change the response of the internal Governor control. This determines how fast and how far the system will open the throttle when the rotor speed changes. Ideally the response is set as high as possible. If it is too low, the main rotor will speed up in unloaded conditions as the system reduces throttle not quick enough. Also the internal Governor will increase throttle very cautious when the rotor is loaded, so that the head speed will drop. If on the other hand the response is set too high, the throttle may stutter audible and the throttle will kick in very hard. So the motor speed will overshoot when the rotor head is loaded. This will make the headspeed even more inconsistent than with a lower setting. The height of throttle response highly depends on factors such as heli size (blade size), motor power and performance and/or the throttle reponse behavior of the speed controller (when flying an electric heli). If you need to adjust the throttle response, we recommend to start with the lowest value and increase stepwise just until you get the most consistent rotor head speed. Having a heli with good motor power and a fast responding speed controller (on electric helis) typically allows to have high throttle response values (up to "very aggressive" setting) which will give very consistent head speed. Helis with not so much power (small nitros, gasser, scale helis) prefer low throttle response settings for a softer throttle management.<br />

Use PARAMETER MENU point I to change the response of the internal Governor control. This determines how fast and how far the system will open the throttle when the rotor speed changes. Ideally the response is set as high as possible. If it is too low, the main rotor will speed up in unloaded conditions as the system reduces throttle not quick enough. Also the internal Governor will increase throttle very cautious when the rotor is loaded, so that the head speed will drop. If on the other hand the response is set too high, the throttle may stutter audible and the throttle will kick in very hard. So the motor speed will overshoot when the rotor head is loaded. This will make the headspeed even more inconsistent than with a lower setting. The height of throttle response highly depends on factors such as heli size (blade size), motor power and performance and/or the throttle reponse behavior of the speed controller (when flying an electric heli). If you need to adjust the throttle response, we recommend to start with the lowest value and increase stepwise just until you get the most consistent rotor head speed. Having a heli with good motor power and a fast responding speed controller (on electric helis) typically allows to have high throttle response values (up to "very aggressive" setting) which will give very consistent head speed. Helis with not so much power (small nitros, gasser, scale helis) prefer low throttle response settings for a softer throttle management.<br />

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==Slow rampup speed (J)== <!--T:14-->

==Slow rampup speed (J)==

When using the internal Governor function this will not apply full throttle immediately when switching into idle up but will increase the motor speed slowly until the desired head speed is reached. At menu point J you can determine how fast this soft start occurs when the Governor is activated initially. The speed is given in number of revolutions by how much the rotor speed is increased per second. The higher the speed the faster your preset head speed will be reached. Please note that the given rates only are indicative. Depending on the response of the speed controller and the inertia of the rotor system it can actually take longer or shorter until the desired speed is reached.<br />

When using the internal Governor function this will not apply full throttle immediately when switching into idle up but will increase the motor speed slowly until the desired head speed is reached. At menu point J you can determine how fast this soft start occurs when the Governor is activated initially. The speed is given in number of revolutions by how much the rotor speed is increased per second. The higher the speed the faster your preset head speed will be reached. Please note that the given rates only are indicative. Depending on the response of the speed controller and the inertia of the rotor system it can actually take longer or shorter until the desired speed is reached.<br />

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==Fast rampup speed (K)== <!--T:15-->

==Fast rampup speed (K)==

When using the internal governor function and you change the head speed in the transmitter in flight (i.e. by switching to a different flight mode), there will not be an abrupt change but the system will increase the rotor rpm with a given rate that can be adjusted here. This rate also determines how fast the rotor head speed will increase when reactivating the Governor after an autorotation maneuver (Autorotation bailout). In this case, when the heli is still in the air, the normal soft start (which is set at point J) would take way too much time for the rotor to speed up again, so we use this faster spool up rate instead.<br />

When using the internal governor function and you change the head speed in the transmitter in flight (i.e. by switching to a different flight mode), there will not be an abrupt change but the system will increase the rotor rpm with a given rate that can be adjusted here. This rate also determines how fast the rotor head speed will increase when reactivating the Governor after an autorotation maneuver (Autorotation bailout). In this case, when the heli is still in the air, the normal soft start (which is set at point J) would take way too much time for the rotor to speed up again, so we use this faster spool up rate instead.<br />

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{{WARNING_QUOTE|When using a very fast rampup speed in consequence the throttle will be opened very quick. Especially when recovering from an autorotation maneuver this can cause the rotor blades to fold in or will damage the main gear. So only increase the value stepwise and with care. With nitro helicopters using quite low values is recommended (even the setting "same as slow rampup speed (J)" may be sufficient) as here an abrupt throttle change from idle position can cause the engine to quit! Also nitro motors react quite slow to throttle changes and it takes some time to speed up the rotor. When the change rate does not fit to the physical speed up, it can happen that the motor is driven to full throttle during spool up by accident as the motor does not come to speed. In this case for technical reason it may happen that the systems stays at full throttle then!}}<br />

{{WARNING_QUOTE|When using a very fast rampup speed in consequence the throttle will be opened very quick. Especially when recovering from an autorotation maneuver this can cause the rotor blades to fold in or will damage the main gear. So only increase the value stepwise and with care. With nitro helicopters using quite low values is recommended (even the setting "same as slow rampup speed (J)" may be sufficient) as here an abrupt throttle change from idle position can cause the engine to quit! Also nitro motors react quite slow to throttle changes and it takes some time to speed up the rotor. When the change rate does not fit to the physical speed up, it can happen that the motor is driven to full throttle during spool up by accident as the motor does not come to speed. In this case for technical reason it may happen that the systems stays at full throttle then!}}<br />

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