I'm prepared to believe that scopes with Boot Ver 0.0.1.
3 don't have the Freeze Bug. But I'm confused as to why some people with Boot Ver 0.0.1.
2 can't reproduce it either.
Here are simple instructions, again, that always work for me.
1. Power on scope. When it has finished booting up:
2. Go to Storage and press Default (at bottom of first Storage menu page) to load the Default setup. This should turn on only CH1, 1 V/div, 1.00 us/div, etc.
--This step is just to make sure we are all starting from the same place.--
3. Go to Acquire and make sure that Normal mode is set and Mem Depth is Auto.
--This should already be set by the Default setup but check anyhow.--
4. Turn on all 4 channels.
--It is not necessary to separate the traces vertically.--
5. Go to Display and set Persis. Time to 100 ms.
--Actually any Persis.Time other than "min" will also cause freezing.--
6. Press the Horizontal Scale knob to enter Horizontal Zoom mode.
--- my scope freezes here 100 percent of the time. ---
For the Math trace bug in its most basic form, the scope must be set to 500 ns/div timebase, so you should have a square wave signal source that produces a few pulses that will be visible at that fast setting. 350 kHz or so. (The Math bug will show up at other timebases too, and in the Zoom mode, if you have a complex signal displayed.)
1. Power on scope. When it finishes booting:
2. Storage>Default
3. Turn on all four channels. Separate traces vertically.
--If you have SP2 installed this will take some time, and a light touch on the Vertical Position knob.
---
4. Set Horizontal to 500 ns/div.
5. In Acquire, set Average mode and Averages to 2, Mem Depth Auto.
6. Connect Ch1 and CH2 probes to your signal source. It's easiest to use the same source for both channels. Adjust Trigger Level and Vertical Scale settings for a nice display.
7. Press the MATH button twice. In Operator, select A+B, or A*B. (Other operations may also produce the error.) In SourceA, select CH1. In SourceB, select CH2.
8. Now press Operation to turn the Math trace ON. Use Scale to control the vertical amplitude of the Math trace. You should see something like the screen below:
(Or rather... you should NOT see such an error UNLESS your scope has the Math Bug still.)
(For an added treat, in Measure select Source>Math and then display the "+Pulses" item. Insert FacePlam here.)