User Guide

Liquid Crystal Noise Eater Chapter 5: Operation
Page 8 CTN017430-D02
5.3. Modulate the Output Power
There is a SMA interface at the right side of the noise eater, which can be used to
modulate the attenuation of the noise eater. The modulation input has a 10 kΩ
input impedance. A voltage ranging from 0 to 2.5 V can be input to modulate the
output power as needed. Before modulating the output power, first turn the output
power level knob clockwise to the end of its travel (minimum output power setting).
Figure 6 Modulated Output Power with a Sinusoidal Input Signal (Left) and SMA
Modulation Input (Right)
Figure 7 Noise Eaters Modulation Performance