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363-206-295
Circuit Pack Descriptions
7-24
Issue 1
December 1997
Note
: Distance in feet for 22 gauge PIC (ABAM) cable
.
Figure 7-9.
TG Option Switches for DDM-2000 OC-3 (Sheet 2 of 2)
TG Quick Reference Summary
7
Provisioned Modes
7
The TG circuit pack can be provisioned through on-board option switches to any one of
three timing modes: (a) External timing mode (b) Line (formerly loop) timing mode or (c)
Free-running mode.
In addition, the BBF2B TGS circuit pack can be provisioned through on-board option
switches to provide a DS1 output for network timing distribution or for shelf timing
distribution. Line (formerly loop) timing from the main OC-12 line is the factory default.
Holdover Mode
7
The holdover mode maintains the last good reference frequency during unprotected
failure of external or line (formerly loop)-timing references.
Maintenance and Control
7
The following maintenance functions are provided on the TG circuit pack: (a) DS1
reference monitoring, (b) TG and OLIU circuit pack protection switching, and (c) inventory
information (
CLEI code, date of manufacture, etc
.).
DS1 Output
7
— DS1 Output (MULT) — a buffered copy of the external DS1 input reference used
for intershelf timing
— DS1 Output (SYNC OUT) — derived from received OC-3 line for network timing
distribution.
Equalizer Switch Settings
Equalization (Note)
S2-1
S2-2
S2-3
0' to 131'
ON
ON
OFF
131' to 262'
ON
OFF
ON
262' to 393'
ON
OFF
OFF
393' to 524'
OFF
ON
ON
524' to 655'
OFF
ON
OFF
Invalid
OFF
OFF
OFF
Invalid
OFF
OFF
ON
Invalid
ON
ON
ON
Содержание DDM-2000 OC-12
Страница 1: ...363 206 295 Issue 1 December 1997 DDM 2000 OC 12 Multiplexer Release 7 0 User Service Manual Volume I ...
Страница 37: ...Tables xxxviii Issue 1 December 1997 A A SONET Overview A 1 SONET Payloads A 18 A 2 SONET Transport Rates A 19 ...
Страница 506: ...INS PROG 8 of 8 Page INS PROG COMMANDS RELATED rtrv eqpt rtrv ne OC 12 DDM 2000 1997 December 1 Issue 11 89 ...
Страница 528: ...RTRV ATTR ALM 2 of 2 Page RTRV ATTR ALM COMMANDS RELATED set attr alm OC 12 DDM 2000 1997 December 1 Issue 11 111 ...
Страница 565: ...RTRV OC3 3 of 3 Page RTRV OC3 COMMANDS RELATED rtrv sync 11 148 1997 December 1 Issue OC 12 DDM 2000 ...
Страница 664: ...SET FEAT 3 of 3 Page SET FEAT COMMANDS RELATED rtrv feat OC 12 DDM 2000 1997 December 1 Issue 11 247 ...
Страница 766: ... Ctl T TOGGLE 2 of 2 Page Ctl T TOGGLE COMMANDS RELATED logout rlgn OC 12 DDM 2000 1997 December 1 Issue 11 349 ...
Страница 847: ...Multiplexer OC 12 DDM 2000 7 Release TARP TOP Manual User Service II Volume 363 206 295 1 Issue 1997 December ...
Страница 867: ...363 206 295 TOP Maintenance and Operation BLANK LEFT INTENTIONALLY PAGE THIS 12 1997 December 1 Issue ...
Страница 1145: ...Order Circuit 363 206 295 NTP 029 1 of 1 Page 1997 December 1 Issue Unused LISTED ORDER IN BELOW ITEMS DO TO GO DETAILS FOR ...
Страница 1146: ...Order Circuit 363 206 295 NTP 030 1 of 1 Page 1997 December 1 Issue Unused LISTED ORDER IN BELOW ITEMS DO TO GO DETAILS FOR ...
Страница 1182: ...Turnup System 363 206 295 NTP 033 1 of 1 Page 1997 December 1 Issue Unused LISTED ORDER IN BELOW ITEMS DO TO GO DETAILS FOR ...
Страница 1243: ...Clearing Trouble 363 206 295 TAP 107 1 of 1 Page 1997 December 1 Issue Unused ...
Страница 1393: ...363 206 295 DLP 513 1 of 1 Page 1997 December 1 Issue Unused ...
Страница 1394: ...363 206 295 DLP 514 1 of 1 Page 1997 December 1 Issue Unused ...
Страница 1456: ...363 206 295 DLP 523 7 of 7 Page 1997 December 1 Issue OC 12 via Access Broadcast Video for Cross connections of Example 4 Figure ...
Страница 1465: ...DLP 525 363 206 295 1997 December 1 Issue 6 of 2 Page Schematic Ring Virtual ATM Sample 1 Figure ...
Страница 1469: ...DLP 525 363 206 295 1997 December 1 Issue 6 of 6 Page Ring Virtual ATM OC 12 DDM 2000 for Cross connections of Example 4 Figure ...
Страница 1565: ...363 206 295 DLP 543 6 of 5 Page 1997 December 1 Issue Network Broadcast Video of Test Transmission 2 Figure ...
Страница 1566: ...DLP 543 363 206 295 1997 December 1 Issue 6 of 6 Page Network Ring Virtual ATM of Test Transmission 3 Figure ...