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Introduction ~ Controls and Connections
Power is supplied through the RS-485 ports to the remote Control Panels
from the XAP 800. 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 92 for maximum
cable run distances when using ClearOne Control Panels.
D. Control/Status Ports A and B. These two female DB25 connector are used
to connect control devices to the XAP 800. The control devices have access
to the command set for the XAP 800 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 77. 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, codecs, phone hybrids, and other audio devices. These outputs
may 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. Expansion Bus In/Out. This RJ-45 connector is part of the expansion bus
(E-bus), which allows up to eight XAP 800 or XAP 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 DB9 serial port is for interconnection between the
XAP 800 and a PC, modem, or other custom remote controller. For serial
protocol, see Appendix B: Connector Pinouts.
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