Chapter 2 Installing the SPL 7110-Exx Transmitter
Connecting the Fiber Cable
© 2009 Harmonic Inc.
15
SPL 7110-Exx, Version 1.0, Rev A
2.3
Connecting the Fiber Cable
To proceed with installation, connect the fiber optic cable to the transmitter output. The
optical output connector of the SPL 7110-Exx is located on the rear of the module, as shown
in
DANGER:
Invisible Laser Radiation. AVOID EXPOSURE TO BEAM. Never operate unit with a broken fiber
or with a fiber connector disconnected.
To connect fiber optic cable to the transmitter output:
1.
Verify that the transmitter module has been mounted into the HLP platform, as described
in Section 2.2..
2.
Determine the connector type on the SPL 7110-Exx. The standard optical connector
recommended by Harmonic is SC/APC. Other connector types can be special ordered.
3.
Verify that the type of connector on the fiber cable is the same as what is on the SPL
7110-Exx, for example, SC/APC.
4.
Verify that the fiber cable connector has been cleaned properly. If the fiber cable
connector needs to be cleaned, follow the cleaning procedure outlined in Section
5.1.1 Cleaning Patch Cord or Pigtail Fiber Optical Connectors
5.
Verify that the SUPRALink optical connector has not been exposed to any contamination.
If you suspect that the connector may have been exposed to contamination (for example,
by a dirty fiber cable connector), follow the cleaning procedure outlined in Section
5.1.2 Cleaning Transmitter Module Optical Connectors
NOTE:
Any contamination of either the fiber cable or SPL 7110-Exx connector can significantly degrade
optical link performance. This degradation will most likely manifest itself as poor carrier-to-noise (CNR)
performance.
6.
For SC-type optical connectors, note the key characteristics of the mating connectors and
align them accordingly. Gently insert the fiber cable connector into that of the SPL 7110-
Exx until the connector clicks into place.
For FC-type optical connectors, note the key characteristics of the mating connectors and
align them accordingly. Gently insert the fiber cable connector into that of the SPL 7110-
Exx and tighten the rotating sleeve of the connector.
Do not overtighten!
2.4
Connecting the RF Broadband Input
The SPL 7110-Exx broadband RF connector is located on the rear panel of the module, as
shown in
The SPL 7110-Exx female F connector accepts a 75 ohm impedance coaxial cable
terminated with a male F-type connector. The male F connector on the cable should have a
center pin diameter in the range of 0.64 mm to 0.8 mm.
NOTE:
To ensure performance integrity, use RG-59 coaxial cable. Use of a connector with a center pin
diameter greater than 0.8 mm can damage the input RF connector.
Insert the signal source connector into the SPL 7110-Exx module RF input connector and
tighten securely.
For the SPL7110S-EXX, the input video signal level must be between 15 and 20 dBmV per
analog video channel based on 78 NTSC channels with 450 MHz digital QAM channels.