IBM42M10SCYAA10
IBM42M10LCYAA20
1063Mb/s Gigabit Link Module
Ordering Information
Part Number
IBM42M10SCYAA10
IBM42M10LCYAA20
Signalling Rate
1063MB/s
1063MB/s
Optical Fibre Control
Yes
Yes
Wavelength
780nm
1300nm
Exceptions to GLM and Fibre Channel Specifications
The IBM42M10SCYAA10 and IBM42M10LCYAA20 comply with the Fibre Channel (100-M5-SL-I, 100-M6-
SL-I 100-SM-LL-I) and GLM specifications except for the following:
• The GLM specification [1] requires that the Fault line be reset by toggling the EWRAP signal. The
IBM42M10SCYAA10 and IBM42M10LCYAA20 do not operate this way. The Fault line is reset only when
it has been determined that the laser is operating correctly. Per Open Fibre Control requirements, the
laser will only be turned on every 10.1 seconds until the link is established.
• As specified in the GLM document, the IBM42M10LCYAA20 (long wavelength) uses Open Fibre Control
Laser Safety protection techniques rather than the physical shutters specified by Fibre Channel. The tim-
ings are the same as those used with the GLM-266 short wavelength links.
• The optical receptacles on the end of the IBM42M10LCYAA20 (long wavelength) do not contain the Fibre
Channel specified “single mode keying” features. Either singlemode or multimode Fibre Channel compli-
ant SC duplex connectors can be inserted into the ports of the GLM.
glm1063.02.fm.02
Feb. 15, 2000
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