User's Manual

28 MDS Master Station MDS 05-6399A01, Rev. D
Figure 4-3 External duplexer or dual antennas
(TX and RX ports pass directly through)
4 Install the Data Interface Cabling. Interface connections are made to the front of the Platform
Manager module. Typical connections for most sites include:
• Serial Data—Attach data equipment to the front panel COM1 and/or COM2 ports. The unit is
hardwired as a DCE device (DB9-F to RJ-45 connector, GE MDS part no. 73-2434A12).
• Ethernet LAN—Attach data equipment to the ETH1 and/or ETH2 port. The auto-sensing MDIX
feature allows either a straight-through or crossover cable to be used.
Where applicable in the steps that follow, secure all cable connections with the locking screws pro-
vided.
5 Connect Primary Power—The Master Station is powered using one or two power supply modules
that work in tandem. The modules may be AC, DC, or a combination of both. The following tables list
each type and key operating parameters.
Table 4-1 AC Power Supply Module
Module Input Power Current Rating
6755 100-220 Vac, 50/60 Hz 120W Max.
All DC power supply modules have chassis isolated inputs and a diode bridge for floating ground,
positive ground, or negative ground installations. These modules include a keyed power connector
with screw-terminals. Strip the wire leads to 6mm (1/4 inch) and insert them into the wire ports pro-
vided. Be sure to observe the polarity shown below. Tighten the binding screws securely and insert the
connector into the module. For compliance with CSA, torque thumbscrews to 10in-lbs.