Specifications

16
10 20 2030 3040 50 40 10
10 20 2030 3040 50 40 10
Control
room
Equipment
room
Remote
equipment
room
Remote
equipment
room
Sample applications
The following sample application contrasts solutions using conventional analog techniques and using RAVE
digital audio routers. You’ll find that especially in the more complex
systems, using RAVE devices typically requires much less
cable, conduit, and labor cost.
STADIUM
The stadium in this example has a central
control room, two remote equipment
rooms located 1,000 feet from the control
room, and one equipment room 300 feet
from the control room. The distances
used here are the lengths of the cable
runs. The first solution uses conventional
analog technology. The first RAVE solution
(A) uses existing cable tray (possible because
the optical fiber is immune to crosstalk and RF
interference), while the second RAVE solution (B) uses
new dedicated ¾-inch conduit.
AND THE EXCEPTION TO THE RULES …
There is an exception to the maximum network diameter rule, which assumes that all points on the RAVE network can
send and receive equally well—in other words, it allows bidirectional communication anywhere on the network. But
if unidirectional communication is acceptable, you can exceed the 2560 bit-period limit as long as you follow all
other distance rules (100 m for UTP segments, 2 km for multimode fiber, et al). For example, you could have a RAVE
161 or RAVE 81 in one location, run a short UTP cable to a Fast Ethernet media converter, run single-mode fiber to another
Fast Ethernet media converter, and then a UTP patch cable to a RAVE 160 or RAVE 80 in another place. In this
situation, the fiber link could be 3, 4, or 5 kilometers long, or perhaps even longer, depending on the media converters.
Actual limits of unidirectional RAVE network operation haven’t yet been determined. Because of the variables
involved, QSC cannot guarantee satisfactory operation beyond the 2560 bit-period limit. But if you wish to try
yourself, here are some tips that will increase your chances of success:
• Keep it simple. The fewer network channels being transmitted, the less effect the delay will have on
operation and the better your chances the data will get through to its destination without problems.
• If possible, construct and test the RAVE network before installation: hook up the RAVE units to the
hubs, media converters, cabling, and all other devices and media to be used, or their exact equivalents,
and check to see that it all operates properly. This can save you a lot of time troubleshooting and
configuring later.