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Tag Archives: DSO
IWATSU LeCroy 9350A — bringing back old memories…
This “beauty” appeared on my desk today. Just testing & playing with it. I used the arb sig-gen of a PicoScope 2204A for generating a unpleasant test-signal. Trying to trigger on it was “interesting” :-)
Posted in Electronics.
Tagged 9350A, amber, CRO, DSO, heavy, IWATSU, lecroy, oscilloscope
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I received an email today…
The sender was the current CEO of LeCroy, Thomas H. Reslewic. I’m glad they have finally taken action. I was offered a full refund. I hope they will also look into all the WaveAce 224 issues I’ve documented so far … Continue reading
WaveAce 224 — Mini rant #11: Bricked for 10 minutes!
This is a ‘close relative’ to the ‘eternal boot screen’. It is also caused by the all-mighty triggering system, which governs the whole oscilloscope – even when it shouldn’t. One of the most annoying things is that this can block … Continue reading
WaveAce 224 — Mini rant #9: ZOOM Zoom zoom… or NOT…
Will it ever end? How many bugs are there still to be discovered… A word of warning: there will be some strong language in the post. If anybody affiliated with Lecroy should read this, please feel offended – not as … Continue reading
Posted in Electronics.
Tagged bug, DSO, firmware, lecroy, oscilloscope, WaveAce 224, zoom
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WaveAce 224 — Mini rant #8: Signal averaging continued
Another quirk. I seem to have a talent to upset this device. Showing a signal that isn’t there should not happen though.
Posted in Electronics.
Tagged averaging, DSO, hallucination, lecroy, oscilloscope, WaveAce 224
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WaveAce 224 — Mini rant #7: Signal averaging
It works! BUT it comes at a cost.
Posted in Electronics.
Tagged averaging, DSO, lecroy, oscilloscope, rant, sluggishness, WaveAce 224
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WaveAce 224 — Mini rant #6: Cursors and auto-measurements
Automatic cursors are supposed to show what and where stuff is measured on a waveform when automatic measurements are used. This is pretty useful, if it works as expected. Suffice to say that it doesn’t always do that – unfortunately.
WaveAce 224 — Mini rant #5: Now what is this?
Got the ‘pulse-trigger’ to trigger. This time I don’t care if the set pulse-length is actually accurate, I just wanted it to trigger on the ‘thing’ and it did. Fine – happy happy joy joy! Then I felt like moving … Continue reading
Posted in Electronics.
Tagged DSO, lecroy, oscilloscope, rant, trigger, WaveAce 224
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Lecroy WaveAce 224 — Mini hack #001: Upgraded ground clip
I managed to damage the alligator clip on one of my probe’s ground cables. It was probably a bad one and it fatigued. I replaced the alligator clip with one I found in a box. During this procedure it turned … Continue reading
Posted in Electronics.
Tagged clip, DSO, ground, hack, lecroy, probe, WaveAce 224
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WaveAce 224 — Mini rant #4: Fixed record-length…
Noooooooo………………………………………..(gasp, cough)
Posted in Electronics.
Tagged DSO, lecroy, oscilloscope, rant, timebase, trigger, WaveAce 224
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Lecroy WaveAce 224 — Mini rant #3: Quality control…
Where art thou? This time I have discovered issues that are trigger-related, but more suitably filed under “general displaying issues”. Still using the “1.01.01.18R2” firmware. Just have a look at the video. No more words…
Lecroy WaveAce 224 — Mini-rant #2: Maximum annoyance!
Oh boy, this thing can’t even count correctly… or since when is 7 = 9 ? Pulse-Trigger: I call that a bug.
Posted in Electronics.
Tagged DSO, lecroy, rant, trigger, WaveAce 224
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DSO Teaser
To see what of the trigger system of the WaveAce 224 works and doesn’t work (as I expect it), I’ve made a little device, which shall from now one be called DSO-T.
Posted in Electronics.
Tagged DSO, oscilloscope, pulse, test jig, trigger, waveform generator
1 Comment
Lecroy WaveAce 224 — Mini-rant #1
This is the first post regarding the Lecroy WaveAce 224 DSO. As it currently seems I have material for at least a few short posts. Currently I’m having issues with one important knob and the triggering system.
Playing with the OSCCAL register of an ATmega168
I was having problems with the “led ring” boards. Their internal oscillators were not ticking with the same speed and required constant re-syncing. I tried to improve the situation by recalibrating by adjusting the OSCCAL registers. Recalibration can be done … Continue reading
Posted in Arduino., Electronics.
Tagged AVR, calibration, DSO, frequency, hardware, oscillator
1 Comment
Jyetech AVR digital oscilloscope DIY KIT — trying to fix it – part 2
Maybe you remember my last post about the Jyetech oscilloscope and it’s weird behaviour. Not all of them are strange, as the free replacement DIY KIT I received from them works fine. At that time I suspected a sick ATmega64 … Continue reading
Posted in DIY., Electronics., Fix me.
Tagged AVR, ChipQuik, desoldering, DSO, jyetech, rework, Seeedstudio, SMD, soldering
2 Comments
Jyetech AVR digital oscilloscope DIY KIT — trying to fix it – part 1
The symptoms since a firmware upgrade (and downgrades, re-upgrades…): strange characters on the display for SEC/DIV system freezes +/- buttons are ignored (but still work physically) the ADC chip doesn’t get a CLK signal during a freeze My theory: The … Continue reading
Jyetech AVR digital oscilloscope DIY KIT — Firmware upgrade odyssey
I bought the DIY KIT at seeedstudio recently, as I needed to feed my soldering obsession. Here are some images of the KIT coming right out of the box: I had to use my milling machine, because the front panel … Continue reading