1. Introduction to the Oscilloscope
Agilent Technologies 54622D 100MHz Scope

2. Sometimes you want to see how signals change with time
Electrical signals are invisible, unless you know how to look at them.

3. The Oscilloscope provides us glasses

4. 2 Analog Channels Displayed

5. Horizontal Sweep (Time Base)

6. Soft keys

7. Vertical Amplitude

8. Trigger Controls

9. Run Control

10. 16 Input Channels of Digital Signals

11. Operation Controls

12. Floppy Disk

14. How do I turn it on?
Wait for a while as it goes through a self test.

15. Analog vs. Digital
Sometimes you want to know the analog details, other times you just want to know the logical interpretation.
2 analog channels
16 digital channels

16. We'll Start with the Analog Section

17. See something quick and simple
Reset all settings to default. Hit Save/Recall, then Default Setup.
2) Connect probe(s) to Probe Comp, then hit Autoscale
Do this whenever settings get messed up

18. Push down on the top part to expose the little hook.

19. Experiment with Vertical and Horizontal controls.
Adjust slowly to observe effect.

20. 2 Analog Channels Displayed

21. What's this triggering stuff?
You want a repetitive signal to appear to stand still.
Normal Triggering
Runs only if it sees a signal that can trigger it.
If trigger level isn't set right—you see nothing!
Auto Triggering
Free runs. Good for seeing if something is happening.
Auto Level Triggering
Runs so long as there is a signal.
If trigger level isn't set right—the scope adjusts it for you!
(may not be such a good thing – there is no free lunch)

22. Start with Auto (free running) triggering, then go to Normal
Press Mode/Coupling key
Cycle through modes with first Softkey

23. Auto triggering
Normal triggering

24. The signal you're looking for is actually here, but it's way off scale
Notes on Autoscale
Autoscale works good on signals like this:
Not so good on signals like this:
If you hit autoscale on a signal like the latter, you might get something like this:
The signal you're looking for is actually here, but it's way off scale
This is noise

25. Recovering from Autoscale
Either:
Hit Autoscale, then undo Autoscale or
Set gain to reasonable value (say 10 V per division)
Keep line visible
Move trigger level
to reasonable value

26. Fiddle knobs till you see what you want.
200 microseconds per division
1 volt per division
trigger voltage
0 volts
(ground)
becsuae of the little symbol in the margin, NOT because it's the bottom of the trace.

28. Saving Display to Disk Insert floppy disk Press Utility key
Set up Print Configuration with Softkeys
Format  tiff (bmp can be used also)
Print to:  disk
Press Quick Print (Saved on disk with file name QFILE nn )

29. Remember … when things get all messed up!
Start over by resetting all settings to default.
Hit Save/Recall, then Default Setup.
If things still aren't working POWER DOWN and restart the COMPUTER.

31. You've got the basics
For additional details and capabilities, go to the manual. There should be some lying around, if not ask your instructor.

32. Digital Addendum

33. Digital Section

34. Enable one or both digital inputs
Disable analog display by double clicking buttons 1, 2.

35. After you're sure that you seeing something
Set trigger to a digital channel (probably).
What you trigger on depends on what you're looking for. If you're counting, trigger on D7.