Power is supplied through the RS-485 ports to the remote Control Panels from the PSR1212. This power is limited to a total of 300mA at 15 volts for each connector. Over-current protection is provided on the +15V pins to prevent damage in the event of shorting. External power can be provided to control devices when more current is required. See page 89 for maximum cable run distances when using ClearOne Control Panels.
D.Control/Status Ports A and B. These two female DB-25 connector are used to connect control devices to the PSR1212. The control devices have access to the command set for the PSR1212 and can be used for common functions such as volume control, muting, preset change, room combining, etc.
Devices can be connected to either port.
For instructions on how to program the control and status pins, see the GPIO section on page 75. The default settings allow control and status of inputs, outputs, volume, and presets. These pins are active low. The 32 presets can also be activated via these connectors. For pinout and default information, see Appendix B.
E.Outputs 1–12.These three-pin Phoenix connectors are for connection of twelve line-level balanced outputs with three-pin Phoenix connectors. These outputs are typically used for connection to VCRs, tape recorders, amplifiers, and other audio devices. These outputs can be configured to contain any combination of gated and non-gated inputs. The nominal output level is 0dBm.
F.Inputs 9–12.These Phoenix connectors are for connection of up to four line-level inputs. These are typically used for connection of VCRs, tape players, CD players, and other audio sources. They can be routed to any output or multiple outputs. Nominal level is 0dBu.
G-H.Expansion Bus In/Out. This RJ-45 connector is part of the expansion bus (E-bus), which allows up to eight PSR1212 or XAP 800/400 units and up to 16 XAP TH2 units to be networked together. The E-bus consists of two buses: one for control, the other for passing audio and mic information (see Control bus, page 7). Using Cat 5 twisted-pair cable, you can separate adjoining units up to 80 feet (24 meters). See the diagram on page 11.
I.RS-232.This female DB-9 serial port is for interconnection between the PSR1212 and a PC, modem, or other external control device. For serial protocol, see Appendix B: Connector Pinouts.
