trigger dropout below 20ms
irv
Posts: 14
This may have been reported before...The trigger drops to off from continous when rate is below 20ms...verson 04...Irv
Comments
Yes, this has been reported... There's a reason for it- but I'll have to see how to make it look like less of a "bug".
At faster rates, the 'scope samples data and then displays the entire sample onscreen, with the trigger at a configurable horizontal position.
At slower rates, the 'scope streams data continually. The newest data on the right gradually moves to the left. On my (old) HP scope, the trigger turns off in this mode- so that's what I did.
Hanno
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Co-author of the official Propeller Guide- available at Amazon
Developer of ViewPort, the premier visual debugger for the Propeller (read the review here, thread here),
12Blocks, the block-based programming environment (thread here)
and PropScope, the multi-function USB oscilloscope/function generator/logic analyzer
I ran into this problem also. Since I believe that you are saying that the sampling rate is too high for the slower time scales, maybe you could only display every 5th, 10th, 20th, or whatever data point. And trigger on this reduced dataset. I have not been able to get any useful information out of the data streaming as currently displayed.
Great product otherwise. And I only have been using it a few hours.
Al
I added the "streaming" mode capability to let you continually see data even at slow timescales. At 100ms/div, it would take 20div*100ms/div=2seconds to take one complete set of samples and show it to you- even worse at 1sec/div. I suppose I could add an option to let you stay in "sample" mode- does that sound right?
That would let you see triggered data at slow timescales, but with very slow refresh rates at those timescales.
Hanno
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Co-author of the official Propeller Guide- available at Amazon
Developer of ViewPort, the premier visual debugger for the Propeller (read the review here, thread here),
12Blocks, the block-based programming environment (thread here)
and PropScope, the multi-function USB oscilloscope/function generator/logic analyzer
I realize that the refresh would be slow. But I would like to be able to have triggered slower sweep rates. Not being greedy, adding the "sample" mode to the 50 ms/div and 100 ms/div would be enough for my needs/wishes.
I also reported a minor problem in switching trigger sources to Parallax on Monday. They said that they would relay the information to you.
I am new to PropScope so forgive a newbie question - Can I do a delayed sweep after a trigger?
Thank you for the great product and great support.
Al
Sorry for the nudge, but...
Will you be adding the "sample" mode to the slower sweep rates? If so, any timeframe quesstimate?
And does the PropScope have any way to do a delayed sweep after a trigger?
Thanks,
Al
Yes, I'm working on 1.05. It'll fix some cosmetic bugs, allow trigger on slower rates and output configurable TV to the DAC card.
A "preview" should be done end of next week. Want to help test it?
Hanno
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Co-author of the official Propeller Guide- available at Amazon
Developer of ViewPort, the premier visual debugger for the Propeller (read the review here, thread here),
12Blocks, the block-based programming environment (thread here)
and PropScope, the multi-function USB oscilloscope/function generator/logic analyzer
I'd be glad to test out at least the slower sweep. Did you get the info from Parallax on the trigger glitch I found?
And delayed sweep? 1.0x?
Thanks,
Al
Hanno
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Co-author of the official Propeller Guide- available at Amazon
Developer of ViewPort, the premier visual debugger for the Propeller (read the review here, thread here),
12Blocks, the block-based programming environment (thread here)
and PropScope, the multi-function USB oscilloscope/function generator/logic analyzer
How is 1.05 coming? I would be glad to beta test it when ready.
Thanks, Al
You've got mail! Others willing to beta test, please send me a private message... I'll do an open beta next week.
Hanno
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Co-author of the official Propeller Guide- available at Amazon
Developer of ViewPort, the premier visual debugger for the Propeller (read the review here, thread here),
12Blocks, the block-based programming environment (thread here)
and PropScope, the multi-function USB oscilloscope/function generator/logic analyzer
THank you. I got the beta and will test it tomorrow.
Al
hannoware.com/propscope/propscope105h.exe
Here list of improvements over v1.04:
105h
+tv out
105g
+using parallax red for dial indicator
+using new dials
+using new coupling sliders
+using new gray preview line
+trigger crosshair is parallax blue/red
+when changing views, trigger horizontal position is preserved for all views
+adding a new lsa trigger starts at 0%
+dac limit is less agressive, can now output ampl=4.5, offset=2.5
+trigger crossline for lsa mode
+better recovery on startup if configuration is corrupted
+shows lsa pulses aligned w front
105f
+improved measurements- especially of |__|__| signals
+turning on generater turns of ch2
+Alt text on vertical channels A/B now says “vertical", not “horizontal”
+removed program preferences
+dsolsa can turn ch2 off
+parallax colors
+dso starts w white bgnd
+trigger level is limited to within bounds- but won't jump when reach bounds
105e
+improved measurements- especially of |__|__| signals
+turning on generater turns of ch2
+Alt text on vertical channels A/B now says “vertical", not “horizontal”
+removed program preferences
+dsolsa can turn ch2 off
+parallax colors
+dso starts w white bgnd
+trigger level is limited to within bounds- but won't jump when reach bounds
105e
+when measure tab is open, controls still work (bug from 105d)
+trigger crosshair is more visible
+auto measurement for frequency/period requires wave to be >1/5 of div
+ch1/ch2/dac indicator in measurement area (clickable)
+continuous trigger stays on for all timescales
+singleshot only works faster than 100ms
+sweep turned on at 100ms, not 50ms
+can change trigger directly from ch1 to ch2
105d
+spectrum linear mode reflects ch1 vertical resolution (1v 10khz, shows as ~1v 10khz) (resolution set by "ch1" dial)
+dac output scaled correctly
+DAC caps in Cursor panel
+Waveform Editor lets you enter max,min, and/or "peak-to-peak"
+click the CH1 in cursor panel to switch to CH2 (or DAC).
105c
+crosshair on mouseover for trigger
+trigger indicator on top of plot bar
1.05b
+dac is more accurate
+CH1 voltage measurements corrected
+better number formatting for all numbers
+frequency generator accurate to 1/10hz. try 1234567.8hz!
+revamped configuration infrastructure
+less flicker!
+when switch to "dac", vertical knob says "dac"
+all settings saved when close/start propscope
+spectrum analyzer is more accurate
+all items have no space between number and unit
+cursor color matches "A/B" background in cursor panel
1.05a
+CH1 everywhere to match the labeling on the case.
+Upper case V everywhere for volts, including mV for millivolts.
+For the horizontal scale, use Time (ms) instead of Time (msec)
+Change u to µ in the Horizontal dial
+bgnd stays when tab around
+float cursor can be turned on/off
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Co-author of the official Propeller Guide- available at Amazon
Developer of ViewPort, the premier visual debugger for the Propeller (read the review here, thread here),
12Blocks, the block-based programming environment (thread here)
and PropScope, the multi-function USB oscilloscope/function generator/logic analyzer
I only had a few minutes to play with it (105h), but it seems to be playing well. I was just measuring some PWM signals for the Quadcopter. I like the new interface!
The bad news is, I have to pack up everything because of a move. I have had all the Propeller stuff out for as long as I can, but now it's time to pack it. I'll get back in the middle of May as I will have to do two 2000 mile round trips to move my belongings and my hovercrafts to my new location.
Keep up the great work!
Jim
Love all the upgrades on 12Blocks and ViewPort also!
Wish list.....
1 Differential input....Subtract 2 from 1....
Irv