Crestron CNRFGWA, Руководство по эксплуатации

Страница: 9 / 20

Crestron CNRFGWA Wireless RF Receiver
Operations Guide - DOC. 8086A Wireless RF Receiver: CNRFGWA
•
5
Setup
Network Wiring
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
Downloads | Product Manuals | Wiring Diagrams section of the Crestron website
(www.crestron.com).
When calculating the wire gauge for a network run, the length of the run and the
power factor (power usage in watts) of each network unit must be taken into
consideration. If multiple network units are to be daisy-chained, the power factors of
each unit must be added to determine the power factor of the entire chain. The length
of the run in feet and the power factor of the run (in watts) should then be used in the
following resistance equation.
R = Resistance (refer to table below).
L = Length of run (or chain) in feet.
PF = Power factor of entire run (or chain).
R < L x PF
40,000
Where:
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 table after this paragraph.
Wire Gauge Values
RESISTANCE (R) WIRE GAUGE
4
16
6
18
10
20
15
22
13
Doubled CAT5
8.7
Tripled CAT5
NOTE: All network wiring must consist of two twisted-pairs. One twisted pair is the
+24V conductor and the GND conductor; the other twisted pair is the Y conductor
and the Z conductor.
NOTE: When daisy-chaining Cresnet units, strip the ends of the wires carefully to
avoid nicking the conductors. Twist together the ends of the wires that share a pin on
the network connector, and tin the twisted connection. Apply solder only to the ends
of the twisted wires. Avoid tinning too far up the wires or the end becomes brittle.
Insert the tinned connection into the Cresnet connector and tighten the retaining
screw. Repeat the procedure for the other three network conductors.
Identity Code
Every piece of equipment and user interface within the network requires a unique
identity code (Net ID). These codes are two-digit hexadecimal numbers from 03 to