
Intercom Audio Distribution System Crestron C2N-IADS30X24
Problem Solving
Troubleshooting
The following table provides corrective action for possible trouble situations. If
further assistance is required, please contact a Crestron customer service
representative.
C2N-IADS30X24 Troubleshooting
TROUBLE POSSIBLE
CAUSE(S) CORRECTIVE ACTION
Power LED does
not Illuminate IADS is not
receiving power. Verify that cable plugged into networkport is
secure. Ensure sufficient network power to
support all NET devices.
NET LED does
not illuminate Loose network
connection. Verify that cable plugged into NET port is
secure.
Improper Net ID. Verify that IADS Net ID matches Net ID in
software program. Refer to "Identity Code."
Hum on audio. Grounding problem. Either connect or remove chassis ground wire.
Check Network Wiring
Use the Right Wire In order to ensure optimum performance over the full range of your installation
topology, Crestron Certified Wire, and only Crestron Certified Wire, may be used.
Failure to do so may incur additional charges if support is required to identify
performance deficiencies because of using improper wire.
Calculate Power CAUTION: Use only Crestron power supplies for Crestron equipment. Failure to do so
could cause equipment damage or void the Crestron warranty.
CAUTION: Provide sufficient power to the system. Insufficient power can lead to
unpredictable results or damage to the equipment. Please use the Crestron Power
Calculator to help calculate how much power is needed for the system
(http://www.crestron.com/calculators).
When calculating the length of wire for a particular Cresnet run, the wire gauge and the
Cresnet power usage of each network unit to be connected must be taken into
consideration. Use Crestron Certified Wire only. If Cresnet units are to be daisy-chained
on the run, the Cresnet power usage of each network unit to be daisy-chained must be
added together to determine the Cresnet power usage of the entire chain. If the unit is a
home-run from a Crestron system power supply network port, the Cresnet power usage
of that unit is the Cresnet power usage of the entire run. The wire gauge and the Cresnet
power usage of the run should be used in the following equation to calculate the cable
length value on the equation’s left side.
Cable Length Equation
L = Length of run (or chain) in feet
R = 6 Ohms (Crestron Certified Wire: 18 AWG (0.75 MM ))
or 1.6 Ohms (Cresnet HP: 12 AWG (4 MM ))
P = Cresnet power usage of entire run (or chain)
2
2
L < 40,000
R x P
Where:
Make sure the cable length value is less than the value calculated on the right side of the
equation. For example, a Cresnet run using 18 AWG Crestron Certified Wire and
drawing 20 watts should not have a length of run more than 333 feet. If Cresnet HP is
used for the same run, its length could extend to 1250 feet.
16 •Intercom Audio Distribution System: C2N-IADS30X24 Operations Guide - DOC. 6170A