Kenwood CS-5200 Series - Page 40

8-2 Ei iminat ion of undesi red signal components
By using the V. MODE control
1
s ADD setting, undesired signal components can be eliminated,
allowing only desired signal components to be displayed.
1) Apply signals including undesired components to the CHI INPUT terminal.
Now apply the components you want to eliminate to the CH2 INPUT terminal.
2) Set the V. MODE switch to ALT or CHOP. Set the SOURCE control to CH2. Set the
trigger point to the CH2 signal, and make sure that CH2 contains the undesired
components of CHI.
3) Press the INV switch, and make sure that the CH2 signal represents the undesired
components in the reverse polarity.
When the V. MODE switch is set to ADD in these conditions, only the desired signal
components are displayed on the CRT.
CH : Signal with undesired components
ADD : Signal without undesired component
-CH2 : Undesired component
4) Elimination capabilities vary with the size of the undesired component. In order to
attain the best results, display the CH2 signal with slightly higher VOLTS/DIV setting.
After pressing the INV switch and activating the ADD function, adjust the CH2 V. VARI
control to get a good waveform.
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Figure 11 Common Mode Rejection