OPERATION
3 - 2
3.2.1 7122B/7133B OU Controls
The following table shows the functions of the controls on the 7122B/7133B OU.
7122B/7133B OU CONTROLS
CONTROL FUNCTION
MAIN POWER Circuit Breaker Controls power to the elevation, azimuth, and
polarization motors, the limit switches, and the
7122B/7133B ACU.
MAINT/REMOTE Switch In the REMOTE position only the 7122B/7133B
ACU controls antenna movement. In the MAINT
position only the 7122B/7133B OU controls
antenna movement.
EMERGENCY STOP Switch Located on the side of the OU. The push button
must be pulled outward before the ACU or OU
can be used to control the movement of the
antenna. Pressing this button removes the
control voltage to the motor contactor.
EL UP/DOWN Switch Momentary contact switch that controls the
elevation movement of the antenna.
POL CW/CCW Switch Momentary contact switch that controls the
polarization movement of the feed tube.
AZ CW/CCW Switch Momentary contact switch that controls the
azimuth movement of the antenna.