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Introduction ~ Controls and Connections
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.
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