Cisco Cisco 1 GHz GainStar Node Installation Guide

3-14 

Balancing and Setup 

    4035009 Rev B 

Follow these steps to setup OMI for the reverse path transmitter. See below. 

 

1 

Consult the system design print to find proper OMI levels. 
When the GainStar Mini Node is powered on, the green LED will light. 

2 

Insert the test probe into the test probe as above position. 

3 

Test the signal level at the maximum frequency of reverse path. 

4 

When the measured level is 20 dBmV, the corresponding OMI of the reverse 
transmitter is 10%, OMI can be changed by adjusting the reverse output PAD. See 
the chart below. 

 

5 

Remove the test probe from the test point. 

 

dBmV