4. Connecting the Model 8200 Antenna Control Unit (ACU)

photo: Model 8200 ACU from Radeus Labs, Inc.

4.1 Model 8200 ACU:
Legacy-compatible vs. Standard

  • The standard Model 8200 ACU is designed to work with the Model 8250 drive cabinet from Radeus Labs. It requires fewer connections and has simpler cabling than legacy systems.
  • The legacy-compatible version of the Model 8200 ACU works with a site’s existing GD (Vertex) 7150 drive cabinet and can serve as a drop-in replacement for a GD 7200 unit.

4.2 The ACU’s Rear Panel

photo: rear panel of the standard-model 8200 ACU
Standard Model 8200 back panel. Actual connectors and configuration may vary. When in doubt, refer to documentation that accompanied the system.

4.2.1 Minimum Connections

Click images to enlarge. Connectors described below. For details and pinouts, also refer to the
Series 8000 ACS Operation & Maintenance manual’s Appendix 2.

Legacy-compatible 8200:
diagram: Connections required for legacy-compatible Model 8200 ACUs Power plus: RF-1, J3, J7, J8, J9, J10
Standard 8200:
Power plus: RF-1, E2

Described below. For details and pinouts, also refer to the
Series 8000 ACS Operation & Maintenance manual’s Appendix 2.

4.2.2 The Connectors

E1 — NETWORK
RJ45 Ethernet connection for providing internet access, TeamViewer remote connection, etc.
E2 — DRIVE CABINET
RJ45 Ethernet connection for interfacing with the RL8250DC Drive Cabinet (G1 configuration only)
F1 — DRIVE CABINET
LC/LC fiber-optic connector for interfacing with the RL8250DC Drive Cabinet. (G1 configuration only, fiber-optic package only).
RF-1
N-Type female connector for RF Input 1 (vertical polarization) to internal RF switch (system defaults to RF-1, user selectable)
RF-2
N-Type female connector for RF Input 2 (horizontal polarization) to internal RF switch
J1 — IRIG
BNC female 75 Ω connector for IRIG timekeeping
J2 — UPC
Uplink power control. Analog output from optional internal receiver.
J3* — DRIVE INTERFACE
DB25M connector for interfacing with legacy drive cabinets
J4 — RS-232
DB25F connector for RS-232C communication with GD DTR, M&C system, etc. (See Appendix 3: 8200 ACU, RS-232 Interface of the Series 8000 Operation and Maintenance manual.)
J5 — RS-232
DB25F connector for RS-232C communication with GD DTR, M&C system, etc. (See Appendix 3: 8200 ACU, RS-232 Interface of the Series 8000 Operation and Maintenance manual.)
J6 — ANALOG RECEIVER
DB9M connector for optional internal receiver’s analog output.
J7* — AZIMUTH
DB25F connector for encoder or resolver position feedback on AZ axis.
J8* — ELEVATION
DB25F connector for encoder or resolver position feedback on EL axis.
J9* — POLARIZATION 1
DB25F connector for resolver position feedback on POL 1 axis.
J10* — POLARIZATION 2
DB25F connector for resolver position feedback on POL 2 axis.

*Only on legacy-compatible versions of the Model 8200, not used on the standard 8200.

Core values of Radeus Labs:

• COMMUNITY • INTEGRITY • CONTINUOUS LEARNING