Newtec MDM9000 - LED Behavior of the DC BUC Power for L-Band TX

Newtec Proprietary
Confidentiality: Unrestricted
R3.2_v1.0
227/387
Feature Descriptions
MDM9000 Satellite Modem
16.10.2 LED Behavior of the DC BUC Power for L-Band TX
There are two LEDs that indicate the state of the DC BUC power for L-band TX.
The active LED corresponds to the selected voltage.
Both LEDs have the same behavior.
LED State Time
Behavior Description
48 V
or 24 V
Off
This voltage is not applied on the L-Band TX interface.
Steady
This voltage is currently applied on the L-Band TX interface.
Blinking
1 s An overload alarm is present on the DC power supply.
The circuit protection mechanism of the power supply is
triggered and disables the output power.
The protection mechanism monitors every 1 s if the overload
is removed and re-enables the DC supply if this is the case.
The following situations can trigger the overload alarm:
• The connected load is too high.
• When a long cable is shorted at the outdoor equipment end.
5 s A short circuit alarm is present on the DC supply.
The circuit protection mechanism of the power supply is
triggered and disables the output power.The protection
mechanism monitors every 5 s if the short circuit is removed
and re-enables the DC supply.
The following situations trigger the alarm:
• The connected load is too high.
• When a long cable is shorted at the outdoor equipment end.
When a short circuit is present, due to a direct
connection between the L-band TX interface
and the earthing, the LEDs on the back panel
are off.