User's Manual Part 1

49
If the temperature drops again below TH3, the amplifier is switched back on.
A fast sequence of on/off switching causes a LockOut of the apparatus.
l BUS Voltages (+5V, +15V, -15V)
No intervention. The history records and intervention if the value is too high or too low by the 10% of its
nominal value.
l Forward & Reflected Power
If the value of the forward power exceeds the threshold value (factory setting) the ampifier is switched off and
the event is recorded in the alarm history.
l No communication with the boards on the BUS
No intervention. The history records the event only if Polling is enabled. If Polling is disabled, the No
communication is not detected.
If a board is not communicating a ! symbol appears under the board image in the front or rear menu.
l Non-corresponding standards
There is no intervention in case one or more boards on the BUS are set to work on different standards. The
history records the event.
l IF Audio unlock
The audio board turns off its IF in case it becomes unlocked. The history records the event.
l Audio Overload
The menu of the audio board indicated the event with a blinking 'Triggered' message. The history does not
record any event.
l IF Video unlock
The video board turns off its IF in case it becomes unlocked. The history records the event.
Besides, the final amplifier is switched off.
l Video Clipper
The menu of the video board indicated the event with a blinking 'Triggered' message. The history does not
record any event.
l L.O. unlock
The local oscillator board turns its output off if any of its PLL unlocks. The history records the event.