MDS 05-6399A01, Rev. F MDS™ Master Station 27
Figure 4-5 LED Indicators
Normal Indications
When power is first applied, the following events occur in a normally working unit:
• All front panel indicators light briefly
• The ACTIVE LED for the selected transceiver board lights.
• On SD radio modules, The Power LED will begin to flash indicating they have not yet
communicated with the platform manager.
• The Power LED and Alarm LED will light on the Platform Manager card. At this point the
platform manager is performing a pre-boot validation of the firmware to ensure that all
required security signatures are in place and valid.
• The Alarm LED will turn off and the Power LED will begin to flash. At this point the platform
manager is booting and initializing the system.
• Once the platform manager initializes the transceiver module, the Power LED will stop
flashing and turn solid.
Maximizing RSSI
Since the Master Station almost always uses an omni-directional antenna, maximizing signal
strength is done at the remote sites where directional antennas are typically used. An RSSI
stronger than -90 dBm is desirable. Refer to Section 5.0 Device Management for information on
monitoring the RSSI for the Radio Module.
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