2N TELEKOMUNIKACE a.s., www.2n.cz
48/377
Audio Unit Connection
Connect up to 5 audio units to each splitter. As the splitter has only 3 audio unit
terminals, connect 1–2 audio unit in parallel. Remove the slide-on terminals from the
audio unit connectors and connect the twin-wire. Adhere to polarity to avoid the
audio unit error. Refer to the schemes printed on the splitter and audio unit for
connection polarity.
Requirements
Connect up to 2 audio units to one terminal.
With multi-strand cables, always use a pair of wires which match each other. In
standard UTP cables the paired wires are twisted around each other.
With special cables (to the cabin), use the neighbouring wires and make sure
that the nearest surrounding wires do not radiate interference (power wire,
video signal etc.).
Recommendation
Do not run the bus near power wires, especially long sections.
Branch the bus to shorten the total length of sections.
Warning
The bus is electrically isolated from the telephone line circuits according
to the EN60950 standard requirements and its low voltage cannot cause
any electrical accident.
Lift Blocking Function Connection
Lift blocking is enabled by the contact breaking (opening) when there is a telephone
line (PSTN, GSM, UMTS, VoIP) fault or if the
rechargeable batteries are
2N Lift8
®
almost flat. Connect the contact to the relevant input of the control electronics of the
lift/group of lifts. The control electronics must ensure that, after the contact opening,
the lifts in operation go down to the nearest station and the doors open.
Caution
This function may be mandatory depending on the regulations
applicable for the given country and time of installation.
Summary of Contents for Lift8
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