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allowable path loss between Cisco XENPAK-10GB-LR & HP BLc 10Gb

Greetings All!

How much attenuation loss should be allowed (upper & lower range) for 10Gb link between Cisco XENPAK-10GB-LR & HP BLc 10Gb?

Thanks.

Regards,

1 REPLY
Hall of Fame Super Silver

Re: allowable path loss between Cisco XENPAK-10GB-LR & HP BLc 1

Well the Cisco XENPAK 10GB-LR is spec'd for spans up to 10 km.

Per its data sheet, the transmit power ranges from +0.5 dBm max down to -8.2 dBm min. Receive levels must be no greater than +0.5 dBm and no less than -14.4 dBm.

The HP BLc 10GB (assuming it is the LR type transceiver) does not have any such detailed specification that I could find.

I'd estimate worst case planing would would be the difference of the minimum Cisco Tx and the least allowable Rx power = 6 dB loss end to end. When in doubt, measure it!

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