10 — ONT technical specifications
10-22 July 2008 Alcatel-Lucent 7342 ISAM FTTU ONT R04.05.06
ONT Product Information Manual Edition 01 3FE 51892 AAAA TCZZA
10.11 ONT optical budget
This section provides the optical budget for the all ONTs. Observe the safety
requirements with ONTs, a Class 1 laser products. Figure 10-2 shows the Class 1
laser product warning label attached to the ONT.
Figure 10-2 Class 1 laser product warning label
Table 10-25 provides ONT optical budget information.
Table 10-25 ONT optical budget
Warning — Operating equipment outside of its tested and
documented performance characteristics and causing an optical
overload may cause damage to equipment components, such as APD
receivers, affect service delivery, and void any component or system
warranties.
CLASS 1 LASER PRODUCT
1825
Item Detail Minimum Typical Maximum
Operating temperature Ambient See the Temperature and humidity range section in this
chapter.
Transmitting budgets
Tx nominal bit rate — — 1244 Mb/s —
Tx/Rx line code Scrambled NRZ — — —
Tx central wavelength Operating
temperature
1260 nm — 1360 nm
Tx reflection of equipment At Tx wavelength — — –6 dB
Mask of Tx eye diagram G.984 burst mode — G.984 —
ORL of ODN at ONU Tx and Rx More than 32 dB — —
Tx mean launched optical power for
the ONT
At ONT optical
port
+0.5 dBm — +5.0 dBm
Tx launched optical power w/o input No input — Sensitivity –10
dB
—
Tx extinction ratio G.984 burst mode 10 dB — —
Tolerance to Tx incident light G.984 burst mode –15 dB — —
Tx –20 dB spectral width G.984 burst mode — — 1.0 nm
(1)
Receiving budgets
Rx nominal bit rate — — 2488 Mb/s —
(1 of 2)
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