HP 3478A¶ HP 3478A¶ Status supported Source code hp-3478a Connectivity IEEE-488 Measurements voltage, current, resistance Features 4-wire, autoranging Website keysight.com The HP 3478A is a bench multimeter with GPIB connectivity. Photos¶ Hp 3478a Back Hp3478a Mugshot Hp 3478a Resources¶ Manual Teardown video by EEVBlog Teardown photos by EEVBlog ROM dump