User's Manual

MDS 05-6399A01, Rev. D MDS Master Station 67
Table 6-3 DC Power Supply Module (6843, 6844, 6845) Specifications:
Supply Type SMPS DC to DC
Input Voltage Range +/-36-75VDC, input is isolated from ground
+/-12-36VDC, input is isolated from ground
+/-75-140VDC, input is isolated from ground
Output 24VDC, 4.0A
Line Frequency DC Input only
Power Consumption 120W, Maximum
Protection Integrated thermal protection, short circuit protection, internal
fuse
Ambient Temperature range Full capacity from -30C to +60C
CSA Certified operating range -30 to +50C
NOTE: Master station power supply modules are field replaceable units that can be removed from an op-
erating system so long as the input power source to the module being replaced has been disconnected.
Refer to 7.4 Replacing Modules for information on removal and installation.
NOTE: When installing DC Power Supply modules, torque thumbscrews to 10 in-lbs to insure optimum
heat transfer through thermal contact connector on the rear of the unit.
NOTE: DC power supply modules are available for several different input ranges. These modules have
interchangeable connectors. Make sure the supply is within the rating for the module installed.
6.3 Platform Manager Module
Figure 6-3 Platform Manager Module
(Part Numbers 03-6834Axx)
The Platform Manager module is an orbit based management processor that provides Ethernet and serial
connectivity to radio cards connected on the Master Station backplane. This module features a 10-port
Ethernet switch and USB hub for backplane connectivity to a number of radio modules.
NOTE: The Platform Manager module does not support hot swappable field replacement; power must be
removed from the system before removal or installation of this device. Refer to 7.4 Replacing Modules
for information on removal and installation.