IBM 3745 Series Service Functions page 297

SAC
storage and control board assembly
STER
switch terminator
SACL
storage and control lower assembly
STG
storage
SACU
storage and control upper assembly
STO
storage (card)
SALT
stand-alone link test
STX
start of text (SSC)
SAR
storage address register
SVC
supervisor call
SCB
scanner control block (storage)
SW
switch
SCF
secondary control field (storage)
SWER
switch error register
SCP
signal converter product (or DCE)
SYN
synchronous idle (SSC)
SCR
serial clock receive (signal)
SYSGEN
system generation
SCT
serial clock transmit (signal) T transmit (signal)
SCTL
storage control card
TA
tag address
SO
send data (signal)
TAP
trace analysis program
SOF
serial data field (storage)
TAR
temporary address register
SOLC
Synchronous Data Link Control
TB
terminator block
SE
system engineer
TC
transmit clock
SES
secondary status (storage)
TCAM
Telecommunications Access Method
SET
signal element timing (signal)
TCB
task control block
SHM
short hold mode
TCC
trace correlation counter (storage)
5101 serial in data in
TCM
thermally-controlled module
SIM
set initialization mode (SDLC)
TCP
test connector pin
SIO
start input/output
TCS
two-channel switch
SIT
scanner interface trace
TCTR
transient error counter
SKA
storage key address
TO
1) tag data
SKOR
storage-protect key data register
2) transmitted data (signal)
SL
serial link
TERM
terminator
SMPS
switching module power supply
TG
transmission group
SMUXA
single multiplex card for lower board
TH
transmission header
on LlC 2
TI
test indicator (signal)
SMUXB
single multiplex card for upper board
TIC1
token-ring interface coupler type 1 card
on LlC 2 (4Mb)
SNA
Systems Network Architecture
TIC2
token-ring interface coupler type 2 card
SNRM
set normal response mode (SOLC)
(16Mb)
SOOO
serial out data out
TICB
trace interface control block
SOH
start of heading (SSC)
TIO
test I/O
SP
storage protect
TLNVT
trace line vector table
SPAE
storage protect/address exception
TOO
time of day
SPK
storage protect key
TPS
two-processor switch
SRL
shift register latch
TPSA
trace parameter status area
SS
start-stop
TRA
token-ring adapter
SSB
system status block
TRM
token-ring multiplexer card that con-
trols up to two TICs
SSCP
system services control point
TRSS
tOken-ring subsystem
SSP
system support programs
TRU
trace record unit
X-6
3745 Communication Controller