Comtech EF Data LGAN, Инструкция по установке и эксплуатации

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Serial Interface Operation 5–2 MN-LGAN
5.2 Key Operational Parameters / Common Commands and Queries
5.2.1 Faults
The M&C system monitors certain key functions for proper operation. Should any of these parameters exceed predetermined limits, the M&C
system will declare a fault. The conditions that trigger a fault are:
•
Any power supply outside its nominal value window
•
A fan running at less than 25% of maximum speed
•
Thermal Shutdown - A temperature fault is indicated if the unit is > +95
°
C (203
°
F) . This creates a summary fault and will cause
the unit to mute itself and switch to the back-up unit (if in a redundant system). However, the 10V supply to the FET transistors will
remain on until the unit reaches the thermal shutdown temperature of > 100
°
C (212
°
F). For protection reasons, the unit will shut
down the 10V supply to the power transistors at temperatures > 100
°
C (212
°
F).
5.2.2 Common Commands
A few of the most common commands and queries are listed below. Full details for each of these are listed at the end of this section.
•
RMS = Retrieve Maintenance Status. Displays voltages, fan speeds, Heatsink temperature, output power monitor reading, etc.
•
RCS = Retrieve Configuration Status. Displays current attenuation, mute, amplifier, online, etc. status.
•
RAS = Retrieve Alarm Status. Displays current alarm or fault status.