Winegard MVT-35B Manual download pdf (Page 78)

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8.7.4 - Motor Calibration

The system can be “homed” from the debug menu. Type “home” from any capitalized

debug prompt and press enter. This should display the “HOME>” prompt.

The system (or individual axis) will need to be “homed” if an “invalid position” indicator

shows up in either the angle or position commands.

DC>home

HOME>

The system can go through a full, 3-axis calibration by typing “h” and pressing enter.

The elevation will raise (or lower) to a predetermined elevation. The skew will then

rotate all of the way in one direction until it encounters a hard stop and then return to

zero degrees. The azimuth will rotate clockwise until it encounters the magnetic

position sensor or hits the hard stop. If it hits the hard stop it will rotate

counterclockwise until it senses the magnetic sensor. The azimuth will then return to

zero degrees. The elevation actuator will then lower the dish until it hits the hard stop.

The elevation actuator may clutch several times. This is normal and does not cause any

damage.

Each axis can be calibrated (homed) individually. In order to calibrate the skew and

azimuth motors the system must be at or above a minimum elevation angle (10

degrees). In order to home the elevation motor the azimuth and skew must be at zero

degrees.

Each motor is identified by a number. The azimuth is motor 0, the elevation is motor 1,

and the skew is motor 2. The format for a specific motor calibration command is “h

[motor#].

The following command homes the azimuth. Wait for the system to complete moving

before attempting to issue another command.

HOME>h 0

HOME>

Important Note: Typing “s” and pressing enter at any time stops all motors. The

calibration may not be complete.

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Winegard MVT-35B Manual Page 78