Crestron C2N-ANLZ Spezifikationen PDF herunterladen (Seite 18)

Cresnet

Analyzer Crestron C2N-ANLZ

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)

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.

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.

Strip and Tin Wire

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 conductors.

Add Hubs

For larger networks (i.e., greater than 28 network devices), it may become necessary to

add a Cresnet Hub/Repeater (CNXHUB) to maintain signal quality throughout the

network. Also, for networks with lengthy cable runs, it may be necessary to add a

Hub/Repeater after only 20 devices.

Further Inquiries

If you cannot locate specific information or have questions after reviewing this

guide, please take advantage of Crestron's award winning customer service team by

calling the Crestron corporate headquarters at 1-888-CRESTRON [1-888-273-7876].

For assistance in your local time zone, refer to the Crestron website

(http://www.crestron.com/

) for a listing of Crestron worldwide offices.

You can also log onto the online help section of the Crestron website to ask

questions about Crestron products. First-time users will need to establish a user

account to fully benefit from all available features.

Future Updates

As Crestron improves functions, adds new features, and extends the capabilities of

the C2N-ANLZ, additional information may be made available as manual updates.

These updates are solely electronic and serve as intermediary supplements prior to

the release of a complete technical documentation revision.

Check the Crestron website periodically for manual update availability and its

relevance. Updates are identified as an “Addendum” in the Download column.

14 • Cresnet

Analyzer: C2N-ANLZ Operations Guide – DOC. 6473

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