The APC400 Antenna Control Unit is an antenna controller that provides basic point, maintenance, and
optional tracking functions for small and medium-sized earth station antennas. The APC400 provides the
user with control over basic motorization kits for earth station satellites by utilizing a simple liquid crystal
display (LCD) front panel interface and powerful software protocol options. The software protocols can
be manipulated through remote control.
The APC400 replaces the legacy APC 100 Antenna Controller. When equipped with an optional beacon
interface adapter PCB and appropriate software license keys, the APC400 may be used to replace a legacy
Andrew APC300 Controller.
The APC400 supports the following standard features:
Motor control for two and three axis motor systems utilizing standard interface
Two different motor speeds for azimuth and elevation axes
Single speed polarization rotators
Automatic positioning of antennas through pre-programmed look angles
Operator control using an LCD panel and keypad
Operator remote control through network and serial port-based communication protocols,
including legacy protocols and Simple Network Management Protocol (SNMP)
10/100 BaseT ethernet interface
Serial port interface (multiple serial ports)
In future releases, the APC400 can be equipped with several optional features for more complex earth
stations. The APC400 Antenna Control Unit can be purchased with tracking capabilities and the
following more advanced features:
Integral beacon receiver to support three-point peaking based step-track
NORAD and Intelsat ephemeris predictive tracking
SmarTrack® hybrid feedback/predictive program tracking
Unlocking the tracking features also enables several other features, such as a time-sequenced event/fault
log. All of these features require optional hardware, and require installation of a software license key.
This section provides a high-level overview of the APC400’s subsystems. The APC400 includes the
Resolver to Digital Subsystem
ASC300LW Beacon Receiver
The Model ASC300LW Beacon Receiver is a high performance unit that is designed to real time track the power density of a satellite beacon and output a DC voltage that is linearly proportional to the beacon power. The applications for the ASC300LW are for antenna step track controlling and uplink power control systems.