Andover Controls CMX 220, Руководство по установке

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Infinity CMX Installation Guide 5
Built-in Modem
The built-in modem, an optional feature of the CMX, has a 2400 baud
rate.
Audio Speaker Connector
The speaker you may connect can have as much amplification as you
want, but you must provide the power for it.
Infinet Cables
The maximum cable length for Infinet is 4,000 ft at 19,200 baud (up to
32 Infinet controllers). You can extend Infinet beyond 4,000 ft or put
more than 32 Infinet controllers on less than 4,000 ft by using the In-
fiLink 200 amplification module.
Cables that form Infinet are 24-gauge, single-twisted-pair, tinned,
shielded copper wire. Use the following cables1 or their equivalents:
Note
You must use shielded cables for Infinet to ensure compliance with the
Class A FCC limits and to communicate reliably.
• Brand Rex # H 9002 (single-pair)
• Anixter # 9J2401021 (single-pair plenum cable)
The cable should have a nominal impedance of 100
Ω
and a nominal
velocity of propagation of 78%.
Capacitance of Infinet cable should be nominal, below 12.5 pF/ft
between conductors and below 22 pF/ft between the conductor
connected to ground and the next conductor.
1. You can also use any cables you may already have in place for ACNET or LBUS.
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