Specifying MTi-680 orientation in MT-manager

Question

Hi, 
 When the MTi-680 is mounted/used in a non-default orientation (for example when mounted upside down such that the connector is on top), how do I tell the module what the mounting orientation is? 
 I have tried to search through the documentation. In the Device Settings window (in MT Manager) I have seen the RotSensor and RotLocal vectors, and my guess is that one of those is used to specify the mounting orientation (RotSensor?). However, the MT manager user manual doesn't give more details about it and asks to refer to the MTi Family Reference Manual, which is a dead end because I couldn't find the information there. I also tried looking up the information in the MTi-600 series User Manual but no luck. I have seen the "orientation Reset" control in the MT manager but I do not want to reset the module to any orientation, but rather want to utilize the calibration values to determine the orientation with the up-side-down mounting. 
 
 Regards, Saad

saadtiwana_int · Accepted Answer

Ok, I have found a way to accomplish this. I read in the MT Manager user manual: 
 "RotSensor and RotLocal: These two rotation matrices are used to apply orientation resets or arbitrary alignments." 
 This gave me an idea and so here is what I did: 
 After connecting the MTi-680 to computer and opening MT Manager, placed the sensor upside down, set the "Orientation Reset Method" to "Inclination Reset" and clicked the "Reset orientation" button. Then I pressed the "Save current orientation reset" button to save it in the device. 
 
 The reason for saving to device was so that next time I open the "Device Settings" view, I can see the stored rotation matrix. In this case, i found it as following: 
 
 As I expected, only the RotSensor was updated. In an ideal case, the values should have been 0, +1 or -1 but since my reference surface wasn't ideal, I saw some values very close to 0, +1 and -1. I then manuall changed them to the nearest amongst 0 , +1, -1 as follows: 
 
 I then hit "Apply". And that's it. The new orientation was set to be upside down, while maintaining the original calibrated tilt alignments.

Specifying MTi-680 orientation in MT-manager

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