Users Manual

MDS 05-6399A01, Rev. G MDS™ Master Station 107
6.4 SD Radio Modules
Figure 6-7. SD Radio Module
The SD Master Radio Modules are field replaceable, hot swappable, full duplex radios offering
narrowband communications. Current offerings include variants that span 800-960MHz.
Master station Radio modules are field replaceable and hot swap-
pable. Refer to Section 8.4 Replacing Modules for information on removal and in-
stallation.
When installing Radio Modules, torque thumbscrews to 10 in-lbs,
or approximately ¼ turn past hand tight, to insure optimum heat
transfer through thermal contact connector on the rear of the unit.
SD Master Radio Module LED Indicators
The SD Radio Modules have bi-color green/red LEDs to indicate power, alarm, and ac-
tive/standby status as shown in the table below. Blue LEDs to indicate receiver transmit and re-
ceive are also provided.
Table 6-11. SD Radio Module LEDs
LED Name
Behavior
Me
a
ning
PWR/ALARM
GREEN
FLASHING RED
FLASHING GREEN
Alternating with ACTIVE
Power applied
Alarmed radio
Radio power-up
Firmware is updating
ACTIVE
GREEN
OFF
Alternating with PWR
Active
Standby
Firmware is updating
TX BLUE Transmitting
RX BLUE Receiving
SD Master Radio Module RF Interface
SD Radio Modules include keyed RF Connectors for front connection to either an Alarm/Relay
Module, if used in a redundant system, or to the front of the duplexer tray if used in a non-redun-
dant system. Different cables are used in each case. Systems assembled by the factory come pre-
wired using the appropriate cabling. If replacing a module, use the cables provided with the orig-
inal system. For more information refer to the appropriate section below for the specific Radio
Module.