3-6
Replaceable Parts
Abbreviations Used in Part Descriptions
Abbreviations Used in Part Descriptions
This section defines the reference designators, abbreviations, and option numbers that are used in the part
descriptions throughout this chapter.
Reference Designations
Reference
Designator
Definition
A assembly
AT attenuator
B fan
DS lamp
J electrical connector; jack
P electrical connector; plug
W cable; transmission path; wire
Abbreviations
Abbreviation Definition
Assy assembly
Bd board
BC beryllium
BN buttonhead (screws)
CPU central processing unit
CW conical washer (screws)
CY copper
D diameter
ESD electrostatic discharge
EXT external
FL flathead (screws)
Ft feet
Hex hexagonal
HP-IB Hewlett-Packard interface bus
HX hexagonal recess (screws)
I in-phase
ID inside diameter
L length
LF low frequency
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