10 — ONT technical specifications
Alcatel-Lucent 7342 ISAM FTTU ONT R04.05.06 July 2008 10-17
3FE 51892 AAAA TCZZA Edition 01 ONT Product Information Manual
Consider the following before configuring RF video services:
• ONTs supporting RF video come with a 75 ohm (F-type) coaxial interface
connector. You may have to install the 75 ohm coaxial F connector on the video
cable.
• The F-type coaxial interface is typically connected to a four-way splitter in the
home. ONTs that use +14 dBmV for video receiving do not support a greater than
1:4 split.
• You must use either RG-6 or RG-59 coaxial cable within the home.
• When configuring the return channel in the 1330 nm optical band, you must:
• configure an HSI service on the Ethernet port for the SWRD
• the port must be configured with a QoS marker profile that supports upstream
frames that are priority marked in untrusted mode and upstream frames that are sent
downstream to the ONT without tagging
• for the LP MDU, the port is configured with ID aid_ontethernet with a value of 5 for
the ONT slot and 1 for the port
• for the indoor ONT, the port is configured with ID aid_ontethernet with a value of
5 for the ONT slot and 2 for the port
• for the indoor ONT, the Ethernet port must be 10/100 BaseT
• for the indoor ONT, jumpers are required to connect the SWRD to the ONT
• Ensure proper attenuation is inserted at the coaxial output to guarantee at the end
of any coaxial drop the following:
• video signal is below 15.5 dBmV
• audio signal is below 2.55 dBmV per channel
RF video service configuration requires the use of TL1 commands. These commands
are issued at the P-OLT craft terminal. For detailed information about the parameters
of each command and response messages, refer to the 7342 ISAM FTTU P-OLT and
ONT Operations and Maintenance Procedures manual.
14 dBmV RF video receivers
Table 10-21 provides RF video interface specifications for ONTs with an 14 dBmV
receiver. The following ONTs use + 14 dBmV receivers:
• I-211E-A
• O-211E-B
• O-421E-B
Table 10-21 RF video service specifications for ONTs with 14 dBmV receivers
RF video features Channel mix 80 analog/33 digital
RF output level (dBmV) +14 dBmV @ 450 MHz using a per- analog channel
measurement at the ONT output
(1)
RF slope correction (tilt) 5 to 8 dB from 50 to 870 MHz
Optical power range (dB) + 1.0 to – 6.0 dB
CNR (dB) 45
(1 of 2)
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