Gw instek gdm 8342gpib digital bench multimeter gw instek gdm 8342gpib p the gw instek gdm 8342gpib is a digital bench multimeter with a factory installed gpib interface this multimeter has exceptional features that include 50 000 counts vfd dual display 0 02 basic dc voltage accuracy and a usb protocol connector to provide users with measurement precision lucid data observation and the convenience to connect to a pc p p the gdm 8342gpib not only supports the fundamental measurement