Check Network Wiring - Crestron UPX-2 Operation Manual

Universal Presentation Processor
Use the Right Wire
Calculate Power
Operations Guide – DOC. 6276C
UPX-2 Troubleshooting (Continued)
TROUBLE
"Communication Error UPX-2 is unable to
with Control System" is communicate with
displayed when demo control system.
project loaded.
"Invalid Path" displayed Path not specified or
in MediaMarker Session no Flash memory
Information window. installed.
A "Restrictions" message Enable Pop-ups not
appears. checked.

Check Network Wiring

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.
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
(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 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
Where: L = Length of run (or chain) in feet
40,000
R = 6 Ohms (Crestron Certified Wire: 18 AWG (0.75 MM ))
L <
R x P
P = Cresnet power usage of entire run (or chain)
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.
NOTE: All Crestron certified Cresnet wiring must consist of two twisted pairs. One
twisted pair is the +24V conductor and the GND conductor and the other twisted
pair is the Y conductor and the Z conductor.
POSSIBLE CORRECTIVE ACTION
CAUSE(S)
Check CUZ file version.
Check UPX-2 Cresnet ID.
Check for or load demo program in
control system.
Specify network path or install Flash
memory in PC Card slot A or B.
Open SETUP MENU | Embedded Apps
and click checkbox.
or 1.6 Ohms (Cresnet HP: 12 AWG (4 MM ))
Universal Presentation Processor: UPX-2 ¥ 67
Crestron UPX-2
2
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