b) Second degree of protection - SOFT FAULT
The Second Degree of protection is a trip in STANDBY mode (SOFT FAULT). You will get an appropriate
message, for instance **GRID CURRENT**. All SOFT FAULT messages are marked with two asterisks on
both screen edges. The message remains on the display until you press any button (or AUTO-OPERATE
function returns to OPERATE mode automatically). The SOFT FAULTs are of such kind where you can correct
exploitation conditions operatively (using less drive, reducing antenna SWR, etc.).
c) Third degree of protection - AUTO PROTECTION
The Third Degree of protection is a trip to OFF LINE mode (AUTO PROTECTION). You will get the
corresponding signature (see Section 6.6 Troubleshooting). If you cannot guess what is the reason, you may
try to turn the amplifier on again in order to check whether it's not an accidental condition. If the problem
persists, you will need to contact your dealer (see Section 1.2 Owner Assistance).
The 6 dB input attenuator is automatically inserted about 1 (one) second after a bad
tuning is detected at drive levels above 20 W. It is switched off at every PTT release
(unless inserted manually).
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