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C S - 1 0 2 2 , 1 0 2 1 . 1 0 1 2 *
No amplitude distortion,
Amplitude distortion,
no out of phase
no out of phase
Amplitude distortion,
No amplitude distortion,
out of phase
out of phase
Fig. 26 Typical phase measurement oscilloscope displays
•
Frequency Measurement
1. Connect the sine wave of known frequency to the chan-
nel 2 INPUT jack of the oscilloscope and select X—Y
operation. This provides external horizontal input.
2. Connect the vertical input probe (CH1 INPUT) t o the
unknown frequency.
3. Adjust the channel 1 and 2 size controls for convenient,
easy-to-read size of display.
4 . The resulting pattern, called a Lissajous pattern, shows
the ratio between the t w o frequencies.
Unknown frequency t o
Vertical input, Standard
frequency t o Horizontal
input
See note
See note
Note: A n y one of these figures, depending
upon phase relationship
Fig. 27 Lissajous waveforms used for frequency
measurement
28
1 8 0 ° out of phase
9 0 ° out of phase
Ratio of unknown
t o standard
1/2:1
1:1
1-1/2:1
6:1
CS-1020, 1 0 1 0
No amplitude distortion,
Amplitude distortion,
no out of phase
no out of phase
No amplitude distortion,
Amplitude distortion,
out of phase
out of phase
Fig. 26 Typical phase measurement oscilloscope displays
* Frequency Measurement
1 . Connect the sine wave of k n o w n frequency t o the EXT
TRIG INPUT jack of the oscilloscope and set the TRIG
MODE switch to X-Y. This provides X-Y operation.
2. Connect the vertical input probe to the unknown fre-
quency.
3. Adjust the vertical and horizontal size controls for a con-
venient, easy-to-read size of display.
4. The resulting pattern, called a Lissajous pattern, shows
the ratio between the t w o frequencies.
Unknown frequency to
Vertical input, Standard
frequency to Horizontal
input
See note
See note
Note: A n y one of these figures, depending
upon phase relationship
Fig. 27 Lissajous waveforms used for frequency
measurement
1 8 0 ° out of phase
9 0 ° out of phase
Ratio of unknown
t o standard
1/2:1
1:1
1-1/2:1
6:1
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