TH-2 XPR Software Support   "CA" - Coax and KMAX/V22 Helicopter Software                                                                                                
 

    Last updated on:1-12-19

"CA" - TH-2 XPR Coax and KMAX/V22 Software

   
CA-XPR-1 software download   Download Software
   

 


TH-2 XPR CA Software Users Guide

Topic Index

CA Control Software Specifications
Radio Settings

CA Control Software General Information
Software Control Settings


 



CA Control Software Specifications

Version: CA-XPR-1 

CCPM Mixing types Supports 3 point 120 deg. with six possible layouts
Number of servo outputs 6 total, COAX - 3 top and 3 bottom, KMAX/V22 - 3 left and 3 right
Servo reversing All 6 outputs  (2 unused Ep front and rear)
Servo centering All 6 outputs with +/- 12.5% travel
Required inputs 5, Aileron, Elevator, Rudder, Pitch, DCP   Note: A gyro must not be used on the pitch input.
Optional inputs None
Input gain control
internal
5, Aileron, Elevator, Rudder, Pitch, CH5 (DCP)  with 0 to 100% range
 
Input gain control
external
5, PT1..PT4 and the X input with 0 to 100% range
Swashplates layout 3 basic layouts provide 6 total with TX channel reversing - for KMAX/V22
CP layout control Select swashplate up/down will increase/decrease CP
Top swashplate layout Select the E servo to face front/rear (3-point only) - for COAX
Bottom swashplate layout Select the E servo to face front/rear (3-point only) - for COAX
CCPM mixing type Select 3 point mixing 120 degree

COAX (mixing type = 1) -- Control axis  swash plate movements:

Roll         - Left/right  tilt of both swash plates.
Pitch       - For/aft tilt of both swash plates.
Yaw         - DCP (differential Collective Pitch) of both swash plates.
Vertical - Symmetric Collective Pitch change of both swash plates.

Note: DCP input is a program mix (TX) with Rudder master and CH5 as slave.
 

KMAX (mixing type = 0) -- Control axis  swash plate movements:

Roll         - Left/right  tilt of both swash plates.
Pitch       -  For/aft tilt of both swash plates.
Yaw         -  Differential For/aft tilt of both swash plates  plus a blend of DCP (differential Collective Pitch) of both swash plates.
Vertical - Symmetric Collective Pitch change of both swash plates.

Note: DCP input is a program mix (TX) with Rudder master and CH5 as slave.
 

V22 (mixing type = 0) -- Control axis  swash plate movements:

Roll         - Left/right  tilt of both swash plates plus a blend of DCP (differential Collective Pitch) of both swash plates.
Pitch       -  For/aft tilt of both swash plates.
Yaw         -  Differential For/aft tilt of both swash plates.
Vertical - Symmetric Collective Pitch change of both swash plates.

Note: DCP input is a program mix (TX) with Aileron master and CH5 as slave.

 



Radio Settings

This section describes what the settings in your transmitter should be.

In general, start off with the servo travel (travel volume, end point, etc.) set to 100% for aileron, elevator, rudder, pitch and CH5. 
This will give you a good starting point.  Servo reversing will depend on how you installed your servos and the brand as well. 
All CCPM swashplate mixing must be turned off in the Tx.  Initially, all other mixing functions should be turned off as well. 

After you have things working, you can then add programmable mixes done by the TX.



CA Control Software General Information     
         

  • The TH-2 synchronizes with the pitch channel (CH-6 on most radios) and expects it to be the last pulse
    (that it "sees") in the data frame sent by the transmitter.  Also, A gyro should not be used on this channel.
     
  • When setting up the DCP it helps to turn off any cyclic component of that function to visualize it better.  This can
    be done by temporarily setting the input gain to zero (0) in the Tech Link modify settings menu.
     
  • When an input gain is set to 100% the pulse data from the TX is used as is and mixed.  At 50%, the pulse
    data from the TX is cut in half and then mixed and so on.  Reducing the gain in the TH-2 when needed,
    like for DCP, is better than doing it in the TX (ATV setting) since this would reduce the overall dynamic range. 
     
  • The gain settings also allow you to balance the amount of servo travel from the contributing channels and
    prevents clamping.  The TH-2 is set to clamp at 0.90 ms min. and 2.10 ms max. to prevent servo damage
    in the event of interference.


Software Control Settings


The TH-2 XPR CA Control Software uses control settings as programmable parameters to allow customization
for many different applications and model types.  These control settings can be modified, loaded, saved and shared
with other users using our Tech Link software.  Details of the control settings are listed below.



Servo Reversing

Modify Settings - 1

Functions:

  • Set servo direction normal/reverse.
     

Each of the eight servo outputs can be reversed individually.
This function works in addition to the reversing done in the transmitter.
Here the individual servos are reversed.  In the Tx, reversing changes the control function direction.
Click on a box to select.

Note:
          For COAX outputs - Top is Front and Bottom is Rear.  

          For KMAX/V22 outputs - Left is Front and Right is Rear

          Outputs Front Ep and Rear Ep are not used.

     
   
     


Servo Centering

Modify Settings - 2..9

2  - Servo Centering Front Ep Output  (Not used in this application)
3  - Servo Centering Front A Output
4  - Servo Centering Front E Output
5  - Servo Centering Front P Output
6  - Servo Centering Rear Ep Output 
(Not used in this application)
7  - Servo Centering Rear A Output
8  - Servo Centering Rear E Output
9  - Servo Centering Rear P Output

Functions:

  • Set servo centering position -12.5..12.5 percent   (-125 ...125 microseconds)
     

Each servo output center (servo neutral position) can be adjusted by+/- 12.5 percent.
This function works similarly to sub-trims in the transmitter.
Click on an arrow button or drag the slider to change.

Note:
          For COAX outputs - Top is Front and Bottom is Rear.  

          For KMAX/V22 outputs - Left is Front and Right is Rear

          Outputs Front Ep and Rear Ep are not used.

 

     
   
     


Mixing Type

Modify Settings - 10

Functions:

  • Selects the Mixing Type
     

This setting selects the mixing type performed by the TH-2.  0= KAMAX/V22 and  1= COAXIAL.

     
   
     


Top Coaxial Swashplate Servo Layout

Modify Settings - 11

Functions:

  • Selects position of the top E servo
     

The top swashplate layout can have two possible configurations where the E servo is facing the front or rear of the model.

Note:
            Top is Front and Bottom is Rear for servo outputs.
            This setting only applies when Mixing Type = 1 (Coaxial).

       
   
       


Bottom Coaxial Swashplate Servo Layout

Modify Settings - 12

Functions:

  • Selects position of the bottom E servo
     

The bottom swashplate layout can have two possible configurations where the E servo is facing the front or rear of the model.

Note:
            Top is Front and Bottom is Rear for servo outputs.
            This setting only applies when Mixing Type = 1 (Coaxial).

       
   
       


KAMAX/V22 Swashplates Servo Layout

Modify Settings - 13

Functions:

  • Select  swashplate layout
     

This setting specifies the swashplates layout from three possible types.

       
     
       
     
       


Collective Pitch Layout

Modify Settings - 14

Functions:

  • Select CP swashplate movment
     

This setting specifies the direction which both swashplates movement (up/down) changes the collective pitch
to increase or decrease. Both swashplates must move the same way.

       
   
       


Aileron Channel Input Gain

Modify Settings - 15

Functions:

  • Adjust internal gain 0..100 percent
  • Select gain source
     

The input gain source can be selected as internal or to one of the external sources - PT1..PT4 or the X input.
The internal setting is only active when the source is set to internal.
Internal gain settings can only be set via USB with Tech-Link.

Note: One or more input gains can be set to the same external gain source (shared).
It is your choice on how to assign them.  Write down your settings for use when away from the PC.
For this software, all five external gains have a positive range of 0..100 percent.
 

     
   
     


Elevator Channel Input Gain

Modify Settings - 16

Functions:

  • Adjust internal gain 0..100 percent
  • Select gain source
     

The input gain source can be selected as internal or to one of the external sources - PT1..PT4 or the X input.
The internal setting is only active when the source is set to internal.
Internal gain settings can only be set via USB with Tech-Link.

Note: One or more input gains can be set to the same external gain source (shared).
It is your choice on how to assign them.  Write down your settings for use when away from the PC.
For this software, all five external gains have a positive range of 0..100 percent.
 

     
   
     


Rudder Channel Input Gain

Modify Settings - 17

Functions:

  • Adjust internal gain 0..100 percent
  • Select gain source
     

The input gain source can be selected as internal or to one of the external sources - PT1..PT4 or the X input.
The internal setting is only active when the source is set to internal.
Internal gain settings can only be set via USB with Tech-Link.

Note: One or more input gains can be set to the same external gain source (shared).
It is your choice on how to assign them.  Write down your settings for use when away from the PC.
For this software, all five external gains have a positive range of 0..100 percent.
 

     
   
     


Pitch Channel Input Gain

Modify Settings - 18

Functions:

  • Adjust internal gain 0..100 percent
  • Select gain source
     

The input gain source can be selected as internal or to one of the external sources - PT1..PT4 or the X input.
The internal setting is only active when the source is set to internal.
Internal gain settings can only be set via USB with Tech-Link.

Note: One or more input gains can be set to the same external gain source (shared).
It is your choice on how to assign them.  Write down your settings for use when away from the PC.
For this software, all five external gains have a positive range of 0..100 percent.
 

     
   
     


DCP Channel Input Gain (CH5)

Modify Settings - 19

Functions:

  • Adjust internal gain 0..100 percent
  • Select gain source
     

The input gain source can be selected as internal or to one of the external sources - PT1..PT4 or the X input.
The internal setting is only active when the source is set to internal.
Internal gain settings can only be set via USB with Tech-Link.

Note: One or more input gains can be set to the same external gain source (shared).
It is your choice on how to assign them.  Write down your settings for use when away from the PC.
For this software, all five external gains have a positive range of 0..100 percent.
 

     
   
     

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