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List Of Abbreviations
J1S
Microsecond
FRU
Field replaceable unit
OC
Overcurrent
FSL
Field service logics
OP
Operating point
ac
Alternating current
func
Function/functional
OV
Overvoltage
adr
Address
adv
Advance
GB
Guard band
PIN
Part number
AGC
Automatic gain control
gnd
Ground
PC
Parity check/printed circuit
ALD
Automated logic diagram
PCR
Process condition register
ALU
Arithmetic and logic unit
hex
Hexadecimal
PG
Parity generation
AM
Address marker
Hz
Hertz
PID
Programming information
distribution
bfr
Buffer
I/O
Input/output
PM
Preventive maintenance
BH
Behind home
ID
Identification
POR
Power on reset
bksp
Backspace
IDB
Identification buffer
PP
Parity predict/program product
BPC
Block processor check
IMPL
Initial microprogram load
pres
Present
BSCA
Binary synchronous communications
IMPSS
Impression singleshot
prev
Previous
adapter
ind
Indicator
proc.
Process
inh
Inhibit
PSR
Program support representative
C
Celcius
init
Initialization
PSS
Print subscan
CE
Customer engineer
insn
Instruction
PTF
Program temporary fix
CEM
Customer engineering
10CL
Input/output control load
pwr
Power
memorandum
IOCS
I nput/output control sense
chk
Check
IOL
Input/output load
R/W
Read/write
ckt
Circuit
lOS
I nput/output sense
rdy
Ready
COMM
Communications
IPL
Initial program load
reg
Register
comp
compare
IR
I ncident report
rep
Repeat
cps
Characters per second
irpt
Interrupt
RPG
Report program generator
CPU
Central processing unit/processing
rpm
Revolutions per minute
unit
kbd
Keyboard
CRC
Cyclic redundancy check
Kg
Kilogram
S
Second
CRT
Cathode ray tube
SAR
Storage address register
CS
Control storage
Ib
Pound
SBI
System bus in
LED
Light emitting diode
SBO
System bus out
db
Decibel
Ipm
Lines per minute
SCP
System control program
DBI
Data bus in
LSR
Local storage register
SDR
Storage data register
DBO
Data bus out
Ivl
Level
SDLC
Synchronous data link control
dc
Direct current
LZ
Landing zone
SEL
Select/selector
DCP
Diagnostic control program
SS
Singleshot
DE
Disk enclosure
MAB
Microprogram address backup
stor
Storage
dec
Decimal
(register)
sw
Switch
displ
Display
MAR
Microprogram address register/
SWG
Sta rt wri te gap
DPLY
Display
memory address register
sys
System
dsply
Display
max
Maximum
dup
Duplicate
MCU
Magnetic card unit
TB
Terminal board
MLM
Maintenance library manual
TH
Thermal
EBCDIC
Extended binary coded decimal
mm
Millimeter
TP
Test point
interchange code
MOR
Micro operation register
tr
Trigger
EOF
End of forms/End of file
MS
Main storage/millisecond
ERAP
Error recording and analysis
MST
Monolithic system technology
procedure
EWG
End write gap
N/A
Nonapplicable
F
Fahrenheit
N/C
Normally closed
FC
File control
N/O
Normally open
FET
Field effect transistor
nom
Nominal
xi
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