Crestron qm-rmcrx-ba 用户手册

Crestron QM-RMCRX-BA   

         QuickMedia™ Receiver/Processor

 

 

CAUTION:  In order to ensure optimum performance over the full range of 
your installation topology, Crestron Certified Wire, and only Crestron Certified 
Wire, should be used. Failure to do so, may incur additional charges if support is 
required to identify performance deficiencies as a result of using improper wire.  

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).  

CAUTION:  Use only Crestron power supplies for Crestron equipment. Failure 
to do so could cause equipment damage or void the Crestron warranty. 

NOTE:  When installing network wiring, refer to the latest revision of the 
wiring diagram(s) appropriate for your specific system configuration, available 
from the Crestron website.  

When calculating the wire gauge for a particular Cresnet run, the length of the 
run and the Cresnet power usage of each network unit to be connected must be 
taken into consideration. If Cresnet units are to be daisy-chained on the run, the 
Cresnet power usage of each 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 length of the run in 
feet and the Cresnet power usage of the run should be used in the resistance 
equation below to calculate the value on the right side of the equation. 

 

The required wire gauge should be chosen such that the resistance value is less 
than the value calculated in the resistance equation. Refer to the following table. 

4 16 
6 

18 

10 20 
15 

22 

13 Doubled 

CAT5 

8.7 

Tripled CAT5 

NOTE:  All 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.  

• 15