INDEX Page. 57 of 89
18. DIAGNOSTICS.
During normal operation, the sophisticated monitoring system continuously monitors
several measurements directly acquired from internal test-points.
When a dangerous situation occurs, a “serious” alarm message is raised and the
amplifier is switched from OPERATE to STANDBY.
The user can either restore immediately the Main Display Page by pressing the
[DISPLAY] key or wait for the visual alarm time-out expiration (about 10 seconds).
The following table shows all the system’s alarm messages that are recorded in the
Alarm History stack:
Protection for SWR greater than 5:1.
Protection for excessive input power.
Protection because the internal temperature has exceeded safe
limits.
The band filter can be damaged
The following table shows all the dynamic warning messages that are not recorded in
the Alarm History stack:
Band not allowed or not set.
In the selected band is set only an antenna for reception.
STEADY OUTPUT POWER
EXCEEDING LIMITS
Appears when a continuous signal is transmitted in "MAX”. After 8
minutes the amplifier will switch automatically to "MID".
Appears when the internal temperature reaches 105 °C (221 °F).
The amplifier automatically switches to the next lowest power level.
HIGH SWR ANTENNA:
TUNING NOT ALLOWED
When the antenna SWR is over 5:1, the auto tuner is disabled.
ATU BYPASS:
TUNING NOT ALLOWED
Since the tuner is bypassed, it is not possible to match
automatically or manually.
NO INPUT POWER: TUNING
HALTED
The tuner cannot work at such a low input power.
CAN'T SWITCH-OFF:
POWER HELD BY REMOTE
The amplifier does not turn OFF by the keyboard because it is kept
ON by a remote device (transceiver or USB port).
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