Cisco GainMaker Optoelectronic Node 1GHz with 65 86 MHz Split Installation Guide

Before you begin balancing, it is important to review and understand the following 

information. This information will show you which balancing process is appropriate 

for your node. 
Before balancing, make sure that you have configured the node according to the 

specifications in your design print and that the node has warmed up for 

approximately one hour. 
The table below shows the items needed for balancing. 

copy of the design print 

determine expected input and output 

signal levels. 

torque wrench with 1/2-inch socket  open and close the system amplifier 

housing. 

spectrum analyzer or signal analysis 

meter capable of working with 

frequencies up to the highest design 

frequency 

determine absolute and relative signal 

levels. 

test point adapter (part number 

562580) or F-81 female-to-female 

adapter 

access the test points. 

length of 75 ohm coaxial cable with 

F-connectors on each end 

connect the test point adapter to the test 

equipment. 

voltmeter 

test the power supply AC and DC 

voltages. 

reverse sweep receiver 

test signals using a reverse sweep 

transmitter. 

1/8-inch flat blade screwdriver 

adjust switch S1, AGC Manual Backoff, 

and AGC Gain Control 

 

Single Optical Receiver 
Complete the following steps to test the input signal level from the optical receiver. 
Important: You cannot balance the amplifier without the proper input signals. 

 

46 

OL-29644-03