User's Manual | ACOM 1200S | 1.8-54 MHz Linear Power Amplifier
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| S e c t i o n OPERATION
In the event a parameter limit is violated, the amplifier will assess the risk and will trigger one of the three
levels of protection, as described in items (a) to (c) below. Every event is accompanied by a warning text on
the screen (see Figure 4-3 Appearance of an alarm message). A sound alarm will be also produced, if set on in
the USER PREFERENCES (see Figure 5-5 Menu USER PREFERENCES).
Figure 4-3 Appearance of an alarm message
Figure 4-3 Appearance of an alarm message
a) First protection level - WARNING
The first (most forgiving) protection level is WARNING. When a value watched by the control unit
approaches the protection threshold, the transmission is not interrupted, but a message appears - for
example "Drive Power too High", "Drain Current too High", or another (see Figure 4-3 Appearance of an alarm
message).
You can continue to transmit in these conditions, but you may take some measures, for example, to reduce
a bit the drive power from the transceiver. The warnings remain on the screen for at least three seconds so
that they can be read through and will disappear after the reason has dropped off.
b) Second protection level - SOFT FAULT
The second protection level is a SOFT FAULT - when a value exceeded the safe level, but does not put the
amplifier in a danger of a failure.
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