You can continue to transmit in these conditions, but you have to 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.
At the second level (SOFT FAULT) the amplifier reverts to STANDBY mode for four seconds or permanently
if the AUTO OPERATE user setting had been activated (see Section 4.1.c) AUTO OPERATE user setting). A
respective message is shown on the screen, for example:
"EXCESSIVE REFLECTED POWER"
"EXCESSIVE DRAIN CURRENT"
and others, accompanied by a sound alarm (unless the sound had not been muted - see Section 5.4 Menu
USER PREFERENCES).
Unlike those for a WARNING, the SOFT FAULT messages remain on the screen and persist until the operator
pushes any button - in order to confirm that the message is read - or until the OPERATE mode is resumed
automatically if the AUTO OPERATE user setting is active (see Section 5.4 Menu USER PREFERENCES).
A SOFT FAULT calls for fast and simple correcting actions by the operator, such as, for example, reducing
the drive power, improving of load SWR through retuning the antenna tuner, antenna change, etc.
c) Third protection level - HARD FAULT
The third and most serious protection level is a HARD FAULT. The amplifier will be turned off automatically
to avoid possible further damages.
When the protection trips off, the data about the fault is stored in the memory and the front panel screen
is blanked. There is also a sound alarm - a series of "F" sent in CW.
If the reason for tripping the protection is not obvious, you can try to turn on the amplifier. If the amplifier
allows this after the fault, a fault message will appear with information about the reason for the latest
automatic shutdown (for example, overheating of the power supply unit or of the PA stage).
After pushing any button, the fault message will disappear, and if there are no further problems (for
example, the overheated unit has already cooled down), the amplifier operation will be restored. In the
event a threshold is still violated, a new message will appear on the screen, or the protection will trip again
immediately after the recovery attempt.
If the problem persists, contact your dealer (see Section 1.9 Owner Assistance).
To Next Page
Loading...
