Harmonic HRR 4104, Product Manual

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Connecting the Input Fiber Cables
HRR 4104 Return Path Receiver Product Manual Rev A (3/05) 2–7
Figure 2-5. Side view of HLP 4200 and HFM 4000 with service loop
2.7 Connecting the Input Fiber Cables
The HRR 4104 receiver has four optical input connectors, which are located on
the front panel, as shown in Figure 1-2 on page 1-2. The HRR 4104 ships with
a protective cap on each optical connector.
DANGER: Invisible Laser Radiation. This product does not contain a laser,
but is used in systems that contain lasers.
AVOID EXPOSURE
TO BEAM. Never operate unit with a broken fiber or with a fiber
connector disconnected.
To connect the optical input cables:
1. Remove the protective caps from the optical adapters of the HRR 4104.
2. Determine the connector type on the HRR 4104 receiver. 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 that of
the HRR 4104, for example, SC/APC.
4. Verify that the fiber cable connectors have been cleaned properly. If you
suspect that a connector may have been exposed to contamination (for
example, by a dirty fiber cable connector), follow the cleaning procedure
outlined in Section
5.1.1 Cleaning Patch Cord or Pigtail Fiber Optical
Connectors on page 5-2.
5. Verify that the HRR 4104 optical connectors have not been exposed to any
contamination. If you suspect that the connectors 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 HRR 4104 Optical
Connectors on page 5-2.
NOTE: Any contamination of either the fiber cable or HRR 4104 connector
can significantly degrade optical link performance. This degradation
will most likely manifest itself as poor carrier-to-noise ratio (CNR) or
bit error rate (BER) performance.
6. Note the key characteristics of the mating connectors and align them
accordingly. Gently insert the fiber cable connector into the connector on
the HRR 4104. (If you are using a connector type that includes a rotating
sleeve,
do not overtighten .)