363-206-295
About This Document
Issue 1
December 1997
xlvii
Safety Precautions for Unenclosed Systems
During service, maintenance, or restoration, a lightwave transmission system is
considered unenclosed. Under these conditions, follow these practices:
1.
Only authorized, trained personnel shall be permitted to do service,
maintenance, and restoration. Avoid exposing the eye to emissions from
unterminated, energized optical connectors at close distances. Connectors
associated with lightwave regenerators are recessed, which limits
exposure distance. However, technicians removing or replacing
regenerators should not stare or look directly into the vacant regenerator
slot with optical instruments or magnifying lenses. (Normal eyewear or
indirect viewing instruments, such as a FIND-R-SCOPE
∗,
are not
considered magnifying lenses or optical instruments.)
*
2.
Only authorized, trained personnel shall use the lightwave test equipment
during installation or servicing, since this equipment contains
semiconductor lasers. (Some examples of lightguide test equipment are
OTDR's, Hand-Held Loss Test Sets, and Feature Finders.)
3.
Under no circumstances shall any personnel scan a fiber with an optical
test set without verifying that all lightwave sources on the fiber are turned
off.
4.
All unauthorized personnel shall be excluded from the immediate area of
lightwave transmission systems during installation and service.
Consult
ANSI
†
Z136.1 American National Standard for Safe Use of Lasers for
guidance on the safe use of lasers in the workplace.
Electrostatic Discharge (ESD) Considerations
!
CAUTION:
Industry experience has shown that all integrated circuit packs can be
damaged by static electricity that builds up on work surfaces and personnel.
The static charges are produced by various charging effects of movement
and contact with other objects. Dry air allows greater static charges to
accumulate. Higher potentials are measured in areas with low relative
humidity, but potentials high enough to cause damage can occur anywhere.
*
Registered trademark of F. J. W. Industries, Inc.
†
ANSI is a registered trademark of American Standards Institute, Inc.
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 ...