4.b. Channel Calibration

<p>As was covered in <a href="/docs/0J1/3.e">Section 3.e</a>, you can automatically calibrate your TReX for your RC or analog controller. If this doesn&#8217;t prove sufficient for your needs, you can manually calibrate your TReX for your controller by specifying the <strong>minimum</strong>, <strong>neutral</strong>, <strong>maximum</strong>, and <strong>deadband</strong> values for each channel. The TReX can simultaneously store both a set of RC and a set of analog calibration parameters. The calibration parameters are in the units of the raw channel values: 0.4&nbsp;us for RC, 4.89&nbsp;mV for analog. In general, these parameters affect how the TReX interprets the channel input values.</p> <p>Perhaps most noticeably, these parameters help determine how the channel inputs affect the motors. Motor speed is scaled linearly (or parabolically, if the channel is set as parabolic using the &#8220;parabolic channels&#8221; configuration parameter) from 0 at a channel input of <strong>neutral+deadband</strong> to max speed at a channel input of <strong>maximum</strong>. In the other direction, motor speed goes from 0 at <strong>neutral-deadband</strong> to max speed at <strong>minimum</strong>. Motor speed is 0 for channel inputs between <strong>neutral-deadband</strong> and <strong>neutral+deadband</strong>, and motor speed is at a maximum for channel inputs greater than <strong>maximum</strong> or less than <strong>minimum</strong>. Motor direction is determined by the side of neutral the channel input is on, and notions of forward and reverse can be switched on a channel by channel basis using the &#8220;reversed channels&#8221; configuration parameter.</p>