
vi Welch-Allyn, Inc.
TERMINOLOGY
Many standard abbreviations are used in this Technical Manual.
Abbreviation Definition
PCB printed circuit board
(the board itself)
PCA printed circuit assembly
(the board with all its components)
LCD Liquid Crystal Display
BATT Battery
DMM Digital Multi-Meter
O-Scope Oscilloscope
Component Reference Designators include:
Abbreviation Definition
C capacitor
D diode
E test point
J connector jack
L inductor
P connector plug
Q transistor
R resistor
S switch
T transformer
U integrated circuit
X crystal, resonator
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