Comtech EF Data SPOD PS 1, PS 1.5, and PS 2 C-, X-, or Ku-Band - Manual (Page 95)

SPOD C-, X-, or Ku-Band Outdoor Amplifier MN-SPODPSX
Serial-based Remote Product Management Revision 1
5–3
• Thermal Shutdown – A temperature fault is indicated if the unit is >95°C. 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. For protection reasons, the unit will shut down the 10V supply
to the power transistors at temperatures >95°C.
• Firmware checksum error at power up.
• FPGA done indicator error at power up.
• Redundant waveguide switch position fault (applies to redundant mode operation only).
• Redundant inter-unit link fault (applies to redundant mode operation only).
The following parameters can be user-defined to report an alarm condition or a fault condition, or the parameter can be ignored
completely by masking it:
• RF amplifier low output power (user adjustable value).
• Fan speed.
5.2.5 Power Detector
A power detector is provided to monitor the output power. It has a useful range of over 20 dB, referenced to the unit’s rated P1dB point,
and its value can be read by exercising the
RMS
command. The test data supplied with each unit gives an indication of the excellent
accuracy and flatness of the power monitor over the frequency band of operation.
5.2.6 Some Common Commands
A few of the most common commands and queries are:
• 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.