Comtech EF Data LPOD-R - Manual (Page 112)

LPOD-R Outdoor Amplifier / Block Up Converter (BUC) MN-LPODR
Optional Serial-based Remote Product Management Revision 1
5–2
• ATT – ATTenuator control. Execute the ATT command to attenuate the LPOD-R gain over its specified range.
• MUT – MUTe status. Execute the MUT command to “software” mute the unit.
• RMS – Retrieve Maintenance Status. Use this query to display voltages, fan speeds, heatsink temperature, output power monitor
reading, etc.
A power detector is provided to monitor the output power. It has a useful range of over 15 dB, referenced to the unit’s rated P1dB
point. Execute the RMS query to read its value.
• RCS – Retrieve Configuration Status. This query displays the current attenuation, mute, amplifier, online, etc. status.
• RAS – Retrieve Alarm Status. Execute the RAS query to read the unit’s current fault or alarm condition status.
The M&C system monitors certain key functions of the LPOD-R for proper operation. Should any of these parameters exceed
predetermined limits, the M&C system declares a fault. All fault conditions cause the status LED to illuminate RED and the unit to
mute.
The conditions that trigger a fault are:
o
BUC PLL Unlocked Fault – This fault is asserted when the LO PLL is unable to lock to the 10 MHz input reference. The fault is de-
asserted when the LO PLL locks to the input reference.
o
Thermal Shutdown Fault – This fault is asserted if the heatsink temperature exceeds +95°C. A 10°C hysteresis margin is
employed; the fault is therefore de-asserted when the heatsink temperature drops lower than +85°C.
o
Unaccepted Firmware Fault (UFF) – This fault is asserted if you reject the running active firmware image (i.e., when you execute
the FAR=R command), or when you do not promptly accept the firmware when running a new active firmware image.
The UFF is de-asserted once you accept the new firmware (i.e., when you execute the FAR=A command).