9
Installation
C4900/01
2.6.1 SPARC-Bus Cable
The table below describes the max. length of the SPARC-bus cable for the power supply for one handset unit.
The length of the cable depends on the number of supply wires and the wire thickness. The table shows the cable
lengths for systems with a supply voltage of +12V. If the system supply voltage is 24V, i.e. the supply voltage is provided
through N420, the max. cable length listed in the table may be doubled.
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The SPARC-bus cable length is limited by the level of output power delivered to a connected external speaker on the
LS_2 terminals. The speaker output power depends on cable length and cable thickness as described in the table
below.
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