Connecting Base Stations; Radio Base Stations Power Supply; Figure 15: Ld4 Card Wiring Diagram - Matra Nortel MC 6500 Manual

4.3.4

CONNECTING BASE STATIONS

Regardless of the synchronization mode, ground the shield to the cabinet ground (or the
unused pairs).
8-pin stocko connector
Pin 4 (NRD1)
Pin 3 (RD1)
Pin 2 (NED1)
Pin 1 (ED1)
4.3.5

RADIO BASE STATIONS POWER SUPPLY

Radio base stations are powered by 40 V taken from the 40 V voltage output designed for
powering S0 interfaces remotely. The 40 V supply voltage is delivered from the front plate
of the power supply unit using a cable with 8-pin stocko connectors to connect the power
supply to the LD4 card. The 48 V supply voltage is delivered from the back plane.
If no S0 interface with a 40 V power supply is required for interface cards, apply a 48 V
remote power supply to the radio base stations (as the S0 interface 40 V power supply is
limited in capacity) to avoid voltage drops due to 48 V to 40 V conversion.
A -48 V or –40 V card based remote power supply can be used. This is configured by
jumper on the card. Power at the voltage required is supplied either through the back plane
(-48 V) or by cabling on the faceplate (-40 V). For a DECT base stations, choose –48 V).
LCAH-30521-001-05=01/EN
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Ce document confidentiel est la propriété de MATRA NORTEL COMMUNICATIONSet ne doit pas être reproduit ou communiqué sans autorisation.

Figure 15: LD4 card wiring diagram

RJ45 connector
connected to pin 6
connected to pin 3
connected to pin 5
connected to pin 4
If using a combination of
LS1/LD4, DECT
synchronization is
transmitted from a master
station to the other slave
stations by a third pair
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