4RF Aprisa XE, Руководство пользователя

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Troubleshooting | 200
Alarm Explanation
Synthesizer Status The selected transmit frequency is outside the tuning range of the
transmitter synthesizer
Modem Lock The terminal modem is not synchronized with the modem at the other end
of the link
TX Temp Shutdown The transmitter power amplifier temperature is greater than 75°C. The
transmitter has shut down to prevent damage.
TX Temp Warning The transmitter power amplifier temperature is greater than 70°C. The
transmitter will continue to operate in this condition, but if the power
amplifier temperature increases above 75°C, a major alarm condition is set
and the transmitter will shut down to prevent further damage.
TX AGC Voltage The transmitter power amplifier automatic gain control is out of limits for
normal operation
TX Reverse Power There is excessive reflected power at the transmitter port of the terminal,
indicating a low return loss in the path between transmitter port and the
antenna.
TX Return Loss
Status Indicates the difference between the transmitted power and the amount of
power being reflected back into the terminal. The alarm will trigger when
there is too much reflected power from the antenna that will degrade link
performance.
RX RSSI The RX RSSI alarm threshold is determined by the RSSI Thresholds for
each of the modulation types (see “Configuring the RSSI alarm threshold”
on page 73)
Fan 1 The internal cooling fan 1 is not operating
Fan 2 The internal cooling fan 2 is not operating
External Input 1 -2 Indicates an active alarm state on the the external alarm input
Alarm Output 1 - 4 Indicates an active alarm state on the the external alarm output
MHSB Switch Indicates that the MHSB has switched over. The MHSB alarm is only shown
if MHSB mode is enabled (see “Configuring the terminals for MHSB” on
page 160).
To view detailed alarm information:
Select Link or Local or Remote > Alarms > Alarm Table
The Alarm Table shows the source of the alarm and the type, the slot (and port, if applicable) where
the alarm originated, the severity and the date and time the alarm occurred.
To further diagnose the cause of the alarm (see “Identifying causes of alarms” on page 204, and
“Alarm types” on page 229).