Sdc; Xsdc; Utp; Ldc - Philips M3150B Installation And Service Manual

(SDC) or Unshielded Twisted Pair (UTP) cables. For both cable types, there are limitations on
the length of cable runs to ensure reliable communication.
SDC Serial Distribution Cables (SDC) are proprietary, 2-conductor, twisted pair, shielded cables
that are 0.34 in (0.9 cm) in diameter. The wires and shield have the following colors and
assignments.
Pink + positive
Blue - negative
Shield
SDC branch cables are limited to a maximum length per branch of 152 m (500 ft.).
XSDC For longer cable runs, Philips shielded, Extended System Distribution Cable (XSDC) can
be used. It has heavier gauge conductor wires with a cable diameter of 1.1 cm (0.44 in).
XSDC wire colors and assignments are the same as for SDC. XSDC branch cables are limited
to a maximum length per branch of 304 m (1000 ft.). Only two XSDC cable runs are allowed
per SCC.
UTP SDN branch cables can also be LAN Ethernet, category 5, Unshielded Twisted Pair (UTP)
cable. UTP cable consists of 4 twisted pairs of unshielded conductors in which one pair
(BLUE/white and WHITE/blue) carries the SDN signal and the other pairs are connected to
ground. UTP cable is compatible with either the 568A or 568B wiring standards for RJ 45
jacks. UTP branch cables are limited to a maximum length per branch of 90 m
(295 ft.).
SDC, XSDC, and UTP cables are available from Philips. Specifications for these branch
cables are summarized in the following table.
Cable
Type

SDC

XSDC

UTP

LDC Local Distribution Cables (LDC) for connecting the processing unit to SDN wall boxes are
Philips proprietary computer cables with a 9-pin connection to the processing unit and an
Philips 5-pin barrel connector to an Philips SDN wall box. A 15 m (50 ft.) LDC cable kit
(M3181A #A35) is also available. Cables and wall boxes are described in the following
sections.
drain ground (GND)
Table 2-1. Branch Cables for Philips Systems
+ Signal - Signal
Color Color
Pink Blue
Pink Blue
BLUE/white WHITE/blue
Shield Maximum Length
Color Meters
Green 152
Green 304
All other 90
Hardware Description
CareNet
Feet
500
1000
295
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