4.6. ON LINE Information Screens and Control Functions
a) Besides the Warming Up and TRI (described above in Sections 4.1 Turning ON and OFF and
4.4 Tuning), you have 12 more Information screens available. They are as follows:
• Forward Power
• Reflected Power
• Output Power (difference between Forward and Reflected)
• Antenna VSWR
• Drive RF Power
• RF Power Gain
• Plate Current
• High Voltage
• Plate RF Peak
• Screen Current
• DC Power Input (product of plate current and high voltage)
• Exhaust Air Temperature (Celsius and Fahrenheit scales).
You can use them to monitor the technical state of the amplifier and associated parameters in digital form.
Selection is made by the PREV and NEXT buttons. You may change them in a closed loop, while the
amplifier is used and controlled in OPERATE and STANDBY modes, changes transmit and receive, without
any influence by the measurement process.
b) You can control the display brightness (not operative in unit furnished with OLED display),
AUTO-OPERATE feature, and antenna output assignments while ON LINE. In order to enter
the control menu, press the PREV+NEXT buttons simultaneously and hold them for two
seconds. Further proceed as described for OFF LINE mode below - see Sections 5.1 Display
Brightness Control, 5.2 Auto-Operate Enabling and Disabling and 5.3 Antenna Output Assignment
for details.
4.7. Auto-Protection System
When any abnormal amplifier condition is detected, the risk will be evaluated automatically and three
different degrees of protection may be used depending on the nature of the problem. Each event is
accompanied by a text telling you the reason.
Degrees of protection:
a) First degree of protection - WARNING
The First Degree of protection is issuing a WARNING message only, without any influence on the
transmitting process. This might be for instance "Reduce Drive", "Plate Current", etc. You could continue to
transmit under such conditions but you are close to a trip threshold.
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