Applications
1. Apply the reference signal to either the CH 1 or the CH 2 input
connector and set the VERTICAL MODE switch to display the
channel used.
2. Set the amplitude of the reference signal to five vertical divi
sions by adjusting the VOLTS/DIV switch and VOLTS/DIV vari
able (CAL) control.
3. Disconnect the reference signal and apply the unknown signal
to the same channel input. Adjust the vertical position of the
waveform so that its bottom edge just touches the 0% line on
the crt.
4. Horizontally position the waveform so that its top-most features
cross the center vertical graticule line (see Figure 3-4).
5. Read the percent ratio directly from the graduations on the ver
tical centerline, referring to the 0% and 100% percentage
marks on the left edge of the graticule (1 minor division equals
4% for a 5-division display).
TIME MEASUREMENTS
Time Duration
To measure time between two points on a waveform, use the fol
lowing procedure:
1. Apply the signal to either the CH 1 or the CH 2 input connector
and set the VERTICAL MODE switch to display the channel
used.
2. Adjust the TRIGGER LEVEL control to obtain a stable display.
3. Set the SEC/DIV switch to display between one and two com
plete periods of the waveform. Ensure that the SEC/DIV vari
able control is in the CAL detent.
4. Position the display to place the time-measurement points on
the center horizontal graticule line (see Figure 3-5).
5. Measure the horizontal distance between the time-measure
ment points.
2225 Operators
3-7
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