<>I'll go along with that. It was/is a very well-desinged interface. At a <>high level it looks remarkably like HPIB/IEEE488 (to the extent that <>there's an HP interface -- the 82169 IIRC -- that transparently links <>HPIB devices to an HPIL controller or HPIL devices to an HPIB <>controller). The low level (I have the specs somewhere) is pretty simple <>as well... < < <Why does a multimeter need a data bus? Remote measurement, data logging. Where I work we use K2001 DMM, GPIB, and a PC to test and log the values of resistive elements in production. Allison