Tektronix 2337 Instruction Manual page 55

2. Apply the signal containing the unwanted line-
mi nae frequency components to the Channel 1 input.
with uNwaNTeo [SJ] :
LINE FREQUENCY '09°° hw Zi S.
COMPONENT 9%. —t " i X
g W=qraS 3. Apply a line-frequency signal to the Channel 2 input.
4. Select ALT VERTICAL MODE and press in the
~ 4 CH 2 INVERT push button.
CH2SIGNAL 49
FREQUENCY >
scree, 5. Adjust the Channel 2 VOLTS/DIV switch and VAR
control so that the Channel 2 display is approxi-
(A) CH 1 AND CH 2 SIGNALS. mately the same amplitude as the undesired portion
of the Channel 1 display (see Figure 16A).
* 6. Select ADD VERTICAL MODE and slightly readjust
=-4 the Channel 2 VOLTS/DIV VAR control for maxi-
SIGNAL WITH mum cancellation of the undesired signal component
LINE FREQUENCY f
To measure time between two points on a waveform, use
1, Preset instrument controls and obtain a Normal