上海充通大学 2.1 Functional Elements of an Instrument SHANGHAI JIAO TONG UNIVERSITY DRAN Backlight LCD Core and lo Powe REF Current t Shunts MS to D onvert wer Management ted AC/DC Supply AC Line Schematics of a DMM from TI LEGEND ■Logi (DMM Digital Multi-Meter) http://focus.ti.com/cn/docs/solution/folders/print/593.html cks 上海充大学 SHANGHAI JIAO TONG UNIVERSITY 2.1 Functional Elements of an Instrument spring,variable conversion Pointer scale, data presentation linkage, data manipulation Piston rod,data transmission Piston,sensing variable conversion Measured medium Fig.2.2 Pressure Gage2.1 Functional Elements of an Instrument Schematics of a DMM from TI (DMM = Digital Multi-Meter) http://focus.ti.com/cn/docs/solution/folders/print/593.html 2.1 Functional Elements of an Instrument Fig. 2.2 Pressure Gage Measured medium Piston, sensing + variable conversion Piston rod, data transmission spring, variable conversion linkage, data manipulation Pointer + scale, data presentation