icselectronicsGPIB开关控制器4842描述：GPIBBusExpandersandGPIBIsolatorsGPIBBusSwitchandMultiplererhasdualoperatingmodes.AsaGPIBBusSwitchitletsoneGPIBcontrollerrunupto3GPIBbuses.AsaGPIBMultiplexeritconnectsmultipleGPIBcontrollerstoasetofcommondevices.***ailablein2or3portversi***.Downloadthe4842DataSheetasaPDFfile.)