Installation Instructions

Maximum average optical power of OFF transmitter,
each lane
–30 dBm
Launch power in OMA minus TDP, each lane, (min.) –0.5 dBm
Minimum extinction ratio at 10.3125 Gbps 5.5 dB
RIN
20
OMA (maximum) –128 dB/Hz
Maximum optical return loss tolerance 20 dB
Receiver characteristics
Line rate 10 Gbps
Signaling rate, each lane 10GBASE 10.3125 Gbps
Damage threshold per lane (min.) 3.8 dBm
Lane wavelength ranges 1264.5 nanometers to 1277.5 nanometers
1284.5 nanometers to 1297.5 nanometers
1304.5 nanometers to 1317.5 nanometers
1324.5 nanometers to 1337.5 nanometers
Average receive power, each lane at 10.3125 Gbps –21.2 to –4.5 dBm
Maximum receiver power, each lane in OMA –4 dBm
Receiver sensitivity (OMA), each lane –19 dBm
Stressed receiver sensitivity (OMA), each lane
(max.)
–16.8 dBm
Maximum receiver reflectance –26 dBm
Link Engineering for greater than 30 km operation
Caution:
Operating ranges that are greater than 30 km for the same link power budget are considered
engineered links. If your operating range is greater than 30 km, you require engineering skills to
determine correct device and cable plant specifications, and installation practices. Avaya
recommends that you consider the potential impact of operating with near zero assured margin.
The following list provides the requirements for achieving operation to 40 km:
• Ensure fiber insertion loss, in dB/km, is less than (18.5 – connector loss, dB)/length.
• Observe strict limits on number and insertion loss of connectors.
• Note that operation to 40 km can possibly eliminate power margin allocated to aging, additional
connectors, or cable repairs. This increases risk of additional remediation effort in the event of
cable or configuration changes. Cable cuts are the dominant cause of link failure and have
been observed to occur on average 4.39 times per thousand sheath miles per year.
Table 37: 40GBASE-ER4 operating ranges
Required operating range
2 m to 30 km
2 m to 40 km
QSFP+ transceiver specifications
May 2017 Installing Transceivers and Optical Components on VOSS 69
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