IBM 3745 Series, Hardware Maintenance Reference

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line identification (line ID) generation (TRA) 6-23
line interface
LIC types 1 to 4 4-9
LIC types 5/6 4-11
line interface address
asynchronous operation command 4-29
FESA X'13' register 4-29
line interface check (HSS) 5-28
line interface coupler
See LIC (line interface coupler)
line interface couplers 1-11
line quality threshold
LIC type 5 (DCE function) 4-69
line specifications
LIC type 5 (DCE function) 4-65
LIC type 6 4-84
line spectrum
LIC type 5 (DCE function) 4-65
native 4-65
V.27 bis
4-65
V.29 4-65
V.33 4-66
line weight
LIC 4-11
Link Problem Determination Aid
LLAP
See LIC (line interface coupler), LIC line analysis
procedures
local
attachment (HSS) 5-42
status 4-98
local console 9-6
local loop
from PKD 4-77
local self-test
LIC type 5 4-96
LIC type 6 4-97
local storage
CSP 4-15
local storage parity error (CCU) 2-46
logical adapter address 3-31
logical addressing
LIC types 1 to 4 4-46
long-term allegiance 7-18
loop
(local) from PKD 4-77
DDS, LIC type 6 4-87
loop 1
on V.24 (LIC types 1 to 4) 4-51
on V.25 (LIC types 1 to 4) 4-52
on X.21 (LIC types 1 to 4) 4-52
loop 2
remote loop back (LIC 5/6) 4-96
loop 3
LIC type 6 4-87
local loop back (LIC 5/6) 4-96
loop 3 (continued)
on V.24 (LIC types 1 to 4) 4-52
on V.24, LIC types 5/6 (DTE function) 4-56
on X.21 (LIC types 1 to 4) 4-52
loop back
local, LIC type 6 4-89
loop or wrap tests for HSS V.35 and X.21 5-39
loosely coupled 7-17
low-speed scanner 1-9
See also LSS (low-speed scanner)
LPDA-2
enabled (LIC type 5) 4-70
hit count threshold (LIC type 5) 4-69
LSS (low-speed scanner)
definition 4-7
LSSD
data flow 8-17
operation 8-17
testing circuit
8-17
M
M.1020 line characteristics 4-66
M.1025 line characteristics 4-66
mailbox 8-13, 8-14
mailbox commands
8-15
main line survey 10-26
main storage (CCU) 2-13
main storage protection state (CCU) 2-18
mains voltage
adjustment 10-5
limits 10-5
maintenance 1-24
console 9-8
LIC type 5 (DCE function)
4-57
LIC type 6 4-80
maintenance and operator subsystem 1-15
maintenance temporary address register (MTAR)
(CCU) 2-43
maintenance temporary data register (MTDR)
(CCU) 2-43
Manchester encoding
description 4-35
SMUX 4-39
MAND DDS LOOP 4-90
manual BER file correlation
See BER analysis
manual test
from PKD (LIC types 5/6) 4-95
LIC type 5 (DCE function) 4-72
manual V.35/X.21 wrap or loop tests 5-39
manual versus scheduled power ON 10-24
MAU 12-5
MCTL and ECC (CCU)
2-15
media adapter unit 12-5
Index
X-31