Audio Authority Access EZ 922, Руководство по установке системы

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A. Install the System Bus
The System Bus allows all of the Access
™
components to communicate among
themselves, and with the control panel. You may use either header in the location
labeled System Bus. Do not connect System Bus to any expander modules such as the
920X, or 940X. Be careful to observe the correct polarity as shown in Figure 29 (header
connectors are keyed for polarity) .
1. Either use pre-assembled bus cables, or assemble bus with cable and 4-pin plugs
(part number 916-0470) using the special assembly tool. If you are making your
own system bus, be sure to leave a small amount of slack in the wire between
the modules and be very careful to assemble the connectors with the wires in the
correct order.
2. Starting at one end of your system, mate one plug of the system bus cable with
either of the 4-pin headers in the location marked System Bus on each module as
shown in Figure 30 . If one cable is not long enough, or if you want to make a branch
from your cable run, you may begin another run by plugging it into the vacant
System Bus header. Otherwise, that header may be left vacant.
3. If you are using pre-assembled buses, you may use a system bus extension cable
for long distances between modules. (Or carefully splice 22 gauge cable
where needed, call Tech Services for assistance)
B. Install the Speaker Bus
The Speaker Bus will be used to send high-level signals from receiver outputs to other
high-level modules in the system. It is a green/white/brown/gray cable.
• Be careful to maintain correct polarity as shown in Figure 31 .
• Install the Speaker Bus in the same way you installed the System Bus. For stereo
switching systems, plug a 4-pin Speaker Bus connector into a header marked
Speaker Bus on every 942 module.
• For surround sound switching systems, make three individual buses: Front, Center,
and Rear Speaker Bus. Begin at one end of your Receiver Product Group, and
plug the first Speaker Bus into a header marked Front Speaker Bus on each 945
module. Plug the next Speaker Bus into a Center Speaker Bus connector on each
945, and the last bus into the Surround Speaker Bus headers in the same way.
• Now connect the Speaker Bus (or Buses) from the Receiver Product Group to
the Speaker Product Group (or Groups for surround sound systems). Plug one
end of the Front Speaker Bus into a 942 or 945 module, then plug a Speaker Bus
connector into a header marked Speaker Bus on every 932 module in the Front
Speaker Product Group. If it is more convenient, connect one channel (e.g. Left)
with one run of bus cable, and the other side with a separate run of cable. Continue
in the same way with the Center and the Surround Speaker Product Groups.
SYSTEM
BUS
YELLOW WIRE
ALWAYS ON
THIS SIDE OF
PLUG
GROUP
MODULE ID
BLACK
BLUE
RED
YELLOW
Figure 29. Observe correct System Bus
polarity. It is fine to leave one header unused.
Figure 30. System Bus cable branching off.
GREEN WIRE
ALWAYS ON
THIS SIDE OF
PLUG
SPEAKER
BUS
GRA
Y
BROWN
WHITE
GREEN
Figure 31. Keyed Speaker Bus port.
Figure 32. Speaker Bus cables branching off.
955 932 932
980
932 932 932
922
945
Access System Bus