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Installation ~ Networking Units
Technical Services Group ~ 1-800-283-5936 (USA) ~ 1-801-974-3760
Expansion bus connections
Using the Expansion Bus ports (RJ-45), you can connect up to eight PSR1212s or
XAP 800/400s and 16 XAP TH2 units, where the total number of microphone
inputs does not exceed 64. Make connections between units in daisy-chain fashion
using the short RJ-45 jumper. If your units are further apart, use category five
twisted-pair cable.
The maximum distance between interconnected PSR1212 or XAP 800/400
units is 80 feet (24 meters). Expansion bus cable length is calculated between
PSR1212s and XAP 800s/400s.
To create an expansion bus network
1. Plug the expansion bus terminator in the Expansion Bus In connector of
the first unit in the network.
2. Connect the RJ-45 jumper cable (or Cat 5 twisted pair cable) to the
Expansion Bus Out connector of the first unit in the network and
Expansion Bus In connector of the second unit. Continue connecting units
in the same fashion.
3. Plug the expansion bus terminator in the Expansion Bus Out connector on
the final unit to complete the network connections.
If the E-bus network is not connected properly, the front panel LEDs will
flash on the units that are physically connected to the network. To correct
the problem, check for broken connections and reconnect the expansion bus
cables.
PSR1212 unit 0 PSR1212 unit 1
PSR1212 unit 2
Out
In
Expansion Bus
In
Out
Expansion Bus
Expansion Bus
In
Out
Figure 2.4. E-bus connection diagram
Networking Units
If connecting to other
units, make sure the
first unit in your E-bus
network is a PSR1212 or XAP
800/400 instead of a XAP TH2.
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RS-232 system-wide
con-trol can be provided
by any PSR1212 or XAP
800/ 400 unit in the network.
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