098-01257-01 | 01257-00-412 Emerson PCA BOARD ASSEMBLY

The back plane is the gas chromatograph’s (GC’s) central printed circuit board (PCB). Its main function is as a connection point for the GC’s specialized plug-in PCBs. The back plane also hosts connections for analog outputs and analog inputs, serial ports, and an Ethernet port.• Preamp board• Central processing unit (CPU) board• Base in/out (I/O) board• Heater/solenoid boardThe card cage also has four additional slots for the following optionalPCBs:• A second preamp board• A second heater/solenoid board• Two optional communications boards