TTC T-BERD 107A, Справочное руководство

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7-12
SECTION 7
SPECIFICATIONS
7.8.2 Pattern Sync Detection Criteria
Fixed Patterns: 30 consecutive error-free bits.
QRSS: 30 + n consecutive error-free
bits for a pattern length of 2
n
-1.
7.9 LOOP CODES
7.9.1 Generation and Detection Patterns
CSU Loop Codes
IN BAND: Loop up: 10000; loop down:
100.
ESF LINE: Loop up: 1111 1111 0111 0000;
loop down: 1111 1111 0001
1100.
ESF Loop up: 1111 1111 0010 1000;
PAYLOAD :loop down: 1111 1111 0100
1100.
NIU Loop Codes
FAC1: Loop up: 1100; loop down:
1110.
FAC2: Loop up: 11000; loop down:
11100.
FAC3: Loop up: 100000; loop down:
100 (N.E. Tel.).
ESF NET: Loop up: 1111 1111 0100 1000;
loop down: 1111 1111 0010
0100.
PROG Loop Codes
PGM LPUP: 3- to 8-bit repeating code. Fac-
tory default (FAC1): loop up -
1100.