Cisco Cisco 1 GHz GainMaker Amplifier インストールガイド
Chapter 3 Balancing and Setup
1 Connect an RF meter or spectrum analyzer to the forward main output test point.
2 Set switch S1 to position number 2.
2 Set switch S1 to position number 2.
3 Turn the MANUAL BACKOFF potentiometer fully counterclockwise for
maximum gain.
4 Determine the outside temperature at the amplifier location.
5 Refer to the
5 Refer to the
Manual Backoff Chart (on page 52) to find the proper manual backoff
level for the current temperature and reference frequency.
6 Turn the MANUAL BACKOFF potentiometer clockwise to reduce the output
level by the amount specified in the Manual Backoff Chart.
Note: After making this adjustment, do not adjust the MANUAL BACKOFF
Note: After making this adjustment, do not adjust the MANUAL BACKOFF
potentiometer again.
7 Proceed to the next section, To Determine the Output Tilt.
Manual Backoff Chart
The following table displays the manual backoff level for selected frequencies and
The following table displays the manual backoff level for selected frequencies and
various temperatures.
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