J14A - Azimuth Sensors - RESEARCH CONCEPTS RC4000 User Manual

RC4000 ACU Boardset Chapter 2 Hardware

2.1.2.2.15 J14A - Azimuth Sensors

Designation PCB Pin Count Connector Type #
J14A AZ 16 Phoenix Double Header 10
J14 provides a double row of pins. The top 16 pins are designated "J14A" and are typically allocated to
supporting potentiometer, pulse and limit switch feedback from the azimuth axis.
The + side of each limit switch circuit supplies 5VDC. This 5VDC supply is protected by a resettable fuse
rated at 250mA.
The azimuth stow switch must be closed when at the azimuth stow position. If the azimuth stow limit
switch cable is severed, the RC4000 will think that the azimuth axis is not at the stowed position. Logic
within the RC4000 will not allow elevation to move below the elevation down limit switch if an azimuth
stowed condition is not recognized.
The directional sense of azimuth movement is defined as clockwise (CW) or counter-clockwise (CCW), as
viewed by an observer located above the antenna. On the controller, CW movement results in a greater
sensed azimuth position.
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