HP HP-97 - Page 132

Symbols and Abbreviations
Table B-1.
HP-97
Reference Designations and Abbreviations
REFERENCE DESIGNATIONS
BeCu= beryllium copper
cpi= characters per inch
coll= collector
cwWw = clockwise
ccw= counterclockwise
cer= ceramic
com= common
crt= cathode-ray tube
incl= include(s)
insul= insulation,
insulated
impgrg= impregnated
incand= incandescent
ips= inches per second
k = kilo (10 to 3),
kilohm
A = assembly K = relay TB = terminal board
B = motor, synchro L = inductor TP = test pointnt
BT = battery M = meter U = integrated circuit
C = capacitor P = plug connector non-repairable
CB = circuit breaker Q = semiconducter device assembly
CR = diode other than diode or V = vacuum tube,
DL = delay line integrated circuit photocell, etc.
DS = indicator R = resistor VR = voltage regulator
E = Misc electrical parts RT = thermistor W = jumper wire
F = fuse S = switch X = socket
FL = filter T = transformer Y = crystal
J = receptacle connector Z = tuned cavity,
network
ABBREVIATIONS
FA = amperes gra= gray p = pico (10 to -12)
ac = alternating current grn= green PC = printed circuit
Ag = silver PCA= printed-circuit
Al = aluminum H = henries assembly
ar = as required Hg = mercury PWB= printed-wiring board
adj= adjust hr = hour(s) phh= phillips head
assy= assembly Hz = hertz pk = peak
hdw= hardware p-p= pead-to-peak
b = base hex= hexagon,hexagonal pt = point
bp = bandpass prv= peak inverse voltage
bpi= bits per inch ID = inside diameter PNP= positive-negative-
blk= black IF = intermediate positive
blu= blue frequency pww= peak working voltage
brn= brown in.= inch, inches porc= porcelain
brs= brass I/0= input/output posn= position(s)
Btu= British thermal unit int= internal pozi= pozidrive
rf = radio frequency
rdh= round head
rms= root-mean-square
rww= reverse working
voltage
rect= rectifier
r/min= revolutions per
minute
B-2