V H F B I D I R E C T I O N A L A M P L I F I E R T E C H N I C A L M A N U A L
12
Alarm Definitions:
Input Power #1/#2: The signal from the antenna is too strong, or there is feedback from the internal to the
external antenna.
The system will continue to operate but the LNA will be bypassed."
Output Power #1/#2: The output power is exceeding 33 dBm. Turn on AGC or adjust the manual attenuators.
AGC Range #1/#2: The signal is exceeding the AGC range. Adjust the manual attenuators.
Shutdown #1/#2: The HPA is shut down see HPA OFF Case for the reason why.
VSWR #1/#2: Please check output port connections, cables and antennas to keep a good VSWR.
OSC #1/#2: Please check Isolation between the Donor and the Service antennas. Isolation should be greater
than System gain + 15dB.
PSU Fail: Power Supply Unit Failure.
Over Temp: Inside temperature exceeds the Over TEMP Level setting.
Door: The access door of the UDA is not properly closed.
Environment.
Click on: Environment, opens up a smaller window, dragged to the right, reveals the UDA #1 and UDA#2
Power levels (Input and output).
