interface code;interface type;interface function;remarks
X1;waterproof metal red indicator light;working station indicator;Normal, bright red
X2;waveguide;radio frequency output;antenna matching
X3;220V/10A three-core power cord;220VAC power supply interface;power supply interface
X4;RS485 interface three-core control line.Connect via USB to RS485 adapter.Host computer software);frequency sweep speed control;RS485 communication