Tektronix 2221A, User Manual

Page: 87 / 170

Measuring Signals
Measuring Signals details how you can measure waveform displays in terms
of time, amplitude, frequency, and phase.
Measuring with the
Graticule
Although you can measure any signal with cursors in the STORE mode, it is
sometimes just as easy to use the graticule (Figure 3-29).
j
!
|
-
t M M
- ■ ■ T , , ■ | , - i . : . - . : , ,
-
: j | : ' Y
- ! | i 1 l I !
i : '■ I !
i
;
SEC/DiV
VOLTS/DIV
, : ,
Each major division is split into
5 minor divisions. One minor
division equals two-tenths (0.2)
of a major division.
Figure 3-29: Measuring with the CRT Graticule
The graticule is a graph that you can change the vertical and horizontal
scale factors. The VOLTS/DIV setting (or readout) indicates the vertical scale
for each major division. The SEC/DIV setting (or readout) indicates the
horizontal scale for each major division. Each minor division represents
two-tenths (0.2) of the major division value.
Measuring with
STORE Mode
Cursors
Cursor measurements are highly accurate and eliminate the calculations of
graticule measurements. In STORE mode the oscilloscope simultaneously
displays the voltage and time difference between the cursor pair. Using the
DISPLAY menu you can also measure frequency by selecting 1/AT.
2221A User Manual
3-31