Synchronous Scanning

With synchronous scanning, the DMM takes a measurement and generates a digital pulse—measurement complete (MC). When the switch receives this digital pulse, it advances to the next entry in its scan list. The DMM takes the next measurement after a time interval. You must program the DMM interval time by configuring an Interval Sample Trigger. Set the interval parameter to the time needed for the switch to activate and settle. Initiate the switch before initiating the DMM for its first measurement.

Synchronous Scanning Timing Diagram

where

M = measurement

WFT = wait for trigger

S&S = switch and settle