Handshaking

With handshaking, the DMM is initiated and waiting for a trigger. The switch module is initiated, executes the first connection in the scan list, and generates a digital pulse—Scan Advanced Output. The DMM receives a signal from the switch, takes a measurement, and then generates a digital pulse—measurement complete (MC). When the switch receives the digital pulse, it advances to the next entry in its scan list. After the relays of the switch module have settled, the switch sends a digital pulse and triggers the DMM for a new measurement. Refer to the Multiple Point Acquisitions topic in the NI Digital Multimeters Help at ni.com/manuals to determine the triggering options.

Handshaking Timing Diagram

where

M = measurement

WFT = wait for trigger

S&S = switch and settle