Tektronix 2225, Operator'S Manual

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Operation
NOTE
More information about using the controls is con­
tained at the end of this procedure. Refer to it as
often as needed while learning the front-panel controls.
5. Use the following controls and notice the effect each has on the
displayed waveform as the settings are changed.
Each POSITION control
CH 1 VOLTS/DIV
CH 1 VOLTS/DIV Variable (CAL)
SEC/DIV
SEC/DIV Variable (CAL)
HORIZONTAL MODE
HORIZONTAL MAG
TRACE SEP
TRIGGER SLOPE
6. At this point, connect the second probe to the CH 2 OR Y input
connector. Set the VERTICAL MODE switch to CH 2 and TRIG­
GER SOURCE to CH 2, then follow steps 2 through 5 again,
using the channel 2 controls.
7. Now set the VERTICAL MODE switches to BOTH-NORM-ALT
and return both VOLTS/DIV switches to 0.5V (10X PROBE).
Rotate all variable controls clockwise to their CAL detents. Set
the TRIGGER SOURCE switch to VERT MODE. Set
HORIZONTAL MODE switch to ALT and MAG switch to X5.
Then use the VERTICAL POSITION and TRACE SEP controls to
position the four traces to convenient locations on the screen.
8. While watching the Channel 2 waveforms, set the middle VER­
TICAL MODE switch to CH 2 INVERT and notice the effect.
Then set the right MODE switch to ADD. What happens to the
waveforms? Finally, return the middle MODE switch to NORM.
What waveform is displayed now?
Congratulations! You now know how to use the 2225 front-panel
controls to display signals and move them about on the screen.
The remainder of this section gives you more information about
the controls and offers suggestions for their use. Section 3
explains how to make specific types of measurements and how to
use the remaining controls not covered in the preceding exercise.
DISPLAY CONTROLS
Set the INTENSITY control for comfortable viewing, but no
brighter than you need. Use high-intensity settings to observe
low-repetition-rate signals, narrow pulses in long time intervals, or
occasional variations in fast signals.
2-6
2225 Operators