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1.2.2.
Protection Circuits
There are 11 special protection circuits used in the amplifier. They are activated when one or
more of next parameters exceed defined values or some unwanted occasion occurs.
•
VSWR too high
•
Input power too high
•
Output power too high
•
Plate voltage too low
•
Anode current too high
•
Screen current too high
•
Grid current too high
•
Mistuning of PA
•
Hot switching protection
•
Soft start for protecting your fuses
•
“switch-on blocking “ at opened amplifier
1.2.3.
Indicators
There are couples of LED and bar graph indicators visible on the front panel to inform you
about value of some parameters or operation status:
Bar graph indicators
Power output
- 50 LEDs
Reflected power
- 20 LEDs
Ig2 current
- 10 LEDs
Anode voltage, anode current, tuning - 30 LEDs
LED Indicators
Current at control grid (Ig1) - 2 LEDs
WAIT
- preheating of tube (150 sec.)
STBY
- standby
OPR
- operation mode
FAULT
- failure, switching off for abt. 2 sec.
INHIBIT
- operating condition
ANT 1
- which ANT is in use
ANT 2
- which ANT is in use
ANT
- ANT selection
Buttons
UP – DWN
- listing in menu
MAN
- manual operating
AUTO
- automatic operating
TUNE
- tuning
SET
– confirms selected parameter
OSD Indicator
LCD Display 2 x 16 characters
Summary of Contents for X8NOM4000A
Page 28: ...Page 28 from 38 7 1 ...
Page 29: ...Page 29 from 38 7 2 Example of connection for ELECRAFT ...
Page 30: ...Page 30 from 38 7 3 Example of connection with Yeasu ...
Page 31: ...Page 31 from 38 7 4 Example of connection with antenna switch and BPF ...
Page 32: ...Page 32 from 38 7 5 Example of connection USB micro KEYER II with IC7800 or IC7700 ...
Page 33: ...Page 33 from 38 7 6 Example of connection USB micro KEYER II with another Icom ...
Page 34: ...Page 34 from 38 7 7 Example for connection USB micro KEYER II with Yeasu or ELECRAFT ...
Page 35: ...Page 35 from 38 7 8 Example of connection PA with MicroHAM MKII MK2R etc with CI V output ...
