Tektronix 2221A - Measuring Signals; Measuring Time with the Graticule or Cursors

Measuring Signals
Using the Oscilloscope as a Digital Voltmeter — With ground-refer
enced cursors, you can also use the oscilloscope as a digital voltmeter for
measuring ordinary DC voltages (Figure 3-34),
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Figure 3-34: Measuring DC Levels with Cursors
Measuring Time with the Graticule or Cursors
Make period or other time measurements between two points on a wave
form using this basic procedure:
□ Step 1: Display the signal on screen so that the first point you wish to
measure from is on screen,
l~~l Step 2: In NON-STORE mode adjust the time base to place the other
horizontal point on screen and use the graticule lines to make the mea
surement — or go to STORE mode and use the rest of this procedure.
n Step 3: In STORE mode, position a cursor on the first point of the
waveform with the cursor control.
1~~1 Step 4: Push the CURSORS knob in to select the other cursor and
position it on the second point. (On 4K or magnified displays an acquisi
tion window indicator at the top of the display shows where the cursors
are relative to the entire record length.)
n Step 5: Note the A time (change or difference in time) readout in the
upper right corner of the display.
2221A User Manual
3-35