Installation ~ Networking Units

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Networking Units

Expansion bus connections

Using the Expansion Bus ports (RJ-45), you can connect up to eight 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 XAP 800/400 or PSR1212 units is 80 feet (24 meters). Expansion bus cable length is calculated between XAP 800s/400s and PSR1212s. The cable connecting a XAP TH2 to the network is included in the cable length between the XAP 800 or XAP 400. For example, if the cable from the XAP 400 to the XAP TH2 is 50 feet and the cable from the XAP TH2 to the XAP 800 is 50 feet, then the total length between the XAP 400 and XAP 800 is 100 feet which is beyond the maximum 80-foot limit.

Figure 2.4. E-bus connection diagram

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.

ClearOne recommends that the first unit in your E-bus network be a XAP 400 or

XAP 800 rather than a XAP TH2.

RS-232 system-wide con- trol can be provided by any

unit in the network.

Technical Services Group ~ 1-800-283-5936 (USA) ~ 1-801-974-3760

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ClearOne comm XAP 400 Expansion bus connections, Installation ~ Networking Units, To create an expansion bus network