Forward Path Setup Procedure - Cisco GS7000 Installation And Operation Manual

Forward Path Setup Procedure

Introduction
This procedure describes how to perform the forward path setup.
Note: The procedure uses an example with a transmitter modulation index of 2.5%
per channel and the 1.2GHz node with RF output level of 54 dBmV @ 1218 MHz.
Setup Procedure
Perform the following steps to set up the forward path.
1 Ensure all unused RF ports are terminated with 75 ohms. Use an AC load if AC
is routed to the RF port.
2 Open the housing according to Opening and Closing the Housing (on page 122).
3 Carefully disconnect the forward path optical fiber(s), if connected.
Note: Ensure all optical connectors are clean. See Care and Cleaning of Optical
Connectors (on page 134).
4 Use an optical power meter to measure the level of the input light signal from the
forward path optical fiber cable(s). Signal should be 0 dBm, 1mW, nominal. For a
standard receiver, record the measurement(s).
5 Connect the forward path optical fiber(s) to the receiver. Use a DVM to measure
DC voltage at receiver optical power level test point. Scale: 1V DC = 1mW (1310
nm transmitter) and 1.12 V DC = 1mW (1550 nm transmitter).
WARNING:
Laser hazard. This product contains a class 3B laser with no safety interlocks.
Under no circumstances should connectors be viewed with equipment
enabled. Direct viewing of connectors can cause eye damage. Failure to adhere
to this admonishment may result in serious injury to the eye(s) or even
blindness.
CAUTION:
Disconnecting the optical fibers of a working network element will interrupt
customer service.

Forward Path Setup Procedure

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