Tag Archives: DSO

IWATSU LeCroy 9350A — bringing back old memories…

Posted on December 21, 2016 by robert

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” :-)

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I received an email today…

Posted on July 3, 2012 by robert

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 →

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WaveAce 224 — Mini rant #11: Bricked for 10 minutes!

Posted on July 1, 2012 by robert

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 →

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WaveAce 224 — Mini rant #9: ZOOM Zoom zoom… or NOT…

Posted on June 22, 2012 by robert

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 →

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WaveAce 224 — Mini rant #8: Signal averaging continued

Posted on June 15, 2012 by robert

Another quirk. I seem to have a talent to upset this device. Showing a signal that isn’t there should not happen though.

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WaveAce 224 — Mini rant #7: Signal averaging

Posted on June 11, 2012 by robert

It works! BUT it comes at a cost.

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WaveAce 224 — Mini rant #6: Cursors and auto-measurements

Posted on May 19, 2012 by robert

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.

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WaveAce 224 — Mini rant #5: Now what is this?

Posted on May 11, 2012 by robert

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 →

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Lecroy WaveAce 224 — Mini hack #001: Upgraded ground clip

Posted on May 11, 2012 by robert

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 →

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WaveAce 224 — Mini rant #4: Fixed record-length…

Posted on April 30, 2012 by robert

Noooooooo………………………………………..(gasp, cough)

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Lecroy WaveAce 224 — Mini rant #3: Quality control…

Posted on April 28, 2012 by robert

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…

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Lecroy WaveAce 224 — Mini-rant #2: Maximum annoyance!

Posted on April 23, 2012 by robert

Oh boy, this thing can’t even count correctly… or since when is 7 = 9 ? Pulse-Trigger: I call that a bug.

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DSO Teaser

Posted on April 23, 2012 by robert

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.

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Lecroy WaveAce 224 — Mini-rant #1

Posted on April 23, 2012 by robert

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.

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Playing with the OSCCAL register of an ATmega168

Posted on December 25, 2009 by robert

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 →

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Jyetech AVR digital oscilloscope DIY KIT — trying to fix it – part 2

Posted on August 9, 2009 by robert

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 →

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Jyetech AVR digital oscilloscope DIY KIT — trying to fix it – part 1

Posted on July 12, 2009 by robert

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 →

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Jyetech AVR digital oscilloscope DIY KIT — Firmware upgrade odyssey

Posted on July 9, 2009 by robert

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 →

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