29
5
Plate current is too high
1.8A
2.0A
6
Grid current is too high
10mA
20mA
7
Screen current is too high
50mA
60mA
8
N/A
N/A
9
Heating voltage error
+/- 2V ***
+/- 2.5V
A
HARD FAULT (from 3.1 version)
Plate current >2.5A
****
B
Plate voltage error
Min. 1800V
Max. 3400V
Min. 1500V
Max. 3500V
C
Grid voltage is low
-40V
-30V
D
Screen voltage error
Min. 250V
Max. 400V
Min. 220V
Max. 420V
E
SWR is too high
3:1
F
Amplifier is too hot
80 deg. C *****
90 deg. C *****
1.
* This fault indicates mistuning of the PA. It works for Input power higher than 10W. If output
power decreases more than 3dB below value corresponding with the applied Input power,
fault message „
Low output power
“ appears. You have to tune the PA correctly.
2.
*** When the heating voltage exceeds boundaries 9V +/- 2V, warning message „
Heating
voltage error
“ appears. Check proper position of AC selector (page 25). Heating voltage
without RF signal should be between 8.5 and 9V.
3.
****
„HARD FAULT”
appears if the plate current exceeds 2.5 A. In such a situation hardware
will immediately disconnect high voltage from the plate. Fault is signed with the letter „
A
“ in
the memory. If error occurs frequently, consult this situation with the manufacturer, please.
4.
***** If temperature sensor inside the PA detects of 80 deg. Celsius, warning message
„
Amplifier is too hot
“ appears on the display. At 90 degrees protection circuit will
automatically block transmitting (fault condition). You have to decrease the power or wait
couple of minutes to be ready transmitting again. Fault is signed with the letter „
F
“ in the
memory.
An example shows situation when Input
power is too high. By pressing PTT safety
circuit will react quickly, error message
appears and FAULT LED starts blinking. In
this case screen current exceeds limited
value (60mA).
After abt. 1 sec. PA returns to TX mode.
Reduce Input power to avoid fault repeating.
Type of supported TCVR and working
frequency are visible on the display.
AUTO LED is ON.
Содержание OM2000+
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