SWR PROTECTOR UNIT/Плата защиты от выского КСВ
ПЛАТА ЗАЩИТЫ ОТ ВЫСКОГО КСВ
SWR PROTECTION UNIT
This device analyzes the voltage from Tandem-Match FWD and REF output terminals and detects the SWR level. When this level exceeds the preset value (usually 3.0:1) the trigger flips and HSWR port signal becomes low, thus switching off the power supply. To set the unit to initial condition the supply voltage must be switched OFF then ON again.
SWR level may be changed by trimmer resistor onboard.
Do not use microcontroller as a HI SWR protection device, it is too slow.