A Gigabit connection between a LX and a SX interface couldn't work : The wavelength used by each one are different (SX=850nm and LX=1300nm). So your 1 & 2 are impossible.
If there is no particulary bug, two Gigabit LX transceivers can link together, just be carreful to the optic fiber :
- If Single mode fiber, the maximum IEEE standard distance is 5km. Note that the HP J4132 can go up to 10km over single mode, but only if connected to a similar trancseiver. The HP J4114 limit your link distance to 5km.
- If Multimode fiber (50&62.5), LX can go up to 550m. Another important point : Multimode fiber have often bad core characteristics so if your fiber is too long and/or have a bad quality, Crc & Alignmt errors could occur between two LX transceivers, even if the length is less than 550m. To solve this problem, you must use a "Mode conditioning Patch Cord", which inject the light between the core and the cladding. See the diagram : http://www.netoptics.com/mode-cond-illustration.gif (This was a "very quick simple summary" for the mode conditioning theory - Sorry for optic fiber professionnals :-) Note that this patchcord type is more expensive than ordinary patchcord, and one for both transceiver is required.
Tranceivers (J4132A and J4114A) have both SC connectors.
