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ceengland7(at)gmail.com
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 Posted: Wed Feb 05, 2020 5:54 pm Post subject: portable oscilloscope recommendations? |
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Hi,
I've been troubleshooting a serial port issue, & fired up the old
Telequipment scope for the 1st time in about a decade. Spent more time
bringing it out of hibernation than actually using it, and it occurred
to me that at today's prices, an el-cheapo solid state scope might make
sense to have next to the digital meters (or maybe, in place of...).
Anyone here tried any of the sub-$100 models, or even the sub-$50
versions? Obviously not looking for lab grade here, just something
mainly to detect signal presence/absence.
Thanks,
Charlie
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wgreenley
Joined: 09 Jan 2010
Posts: 100
Location: Dowagiac, MI
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| Posted: Wed Feb 05, 2020 6:34 pm Post subject: portable oscilloscope recommendations? |
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I have use the pokit meter from https://pokitmeter.com/ Multimeter, single channel scope and data logger, uses your phone as a display.
On Wed, Feb 5, 2020 at 9:00 PM Charlie England <ceengland7(at)gmail.com (ceengland7(at)gmail.com)> wrote:
| Quote: | --> AeroElectric-List message posted by: Charlie England <ceengland7(at)gmail.com (ceengland7(at)gmail.com)>
Hi,
I've been troubleshooting a serial port issue, & fired up the old
Telequipment scope for the 1st time in about a decade. Spent more time
bringing it out of hibernation than actually using it, and it occurred
to me that at today's prices, an el-cheapo solid state scope might make
sense to have next to the digital meters (or maybe, in place of...).
Anyone here tried any of the sub-$100 models, or even the sub-$50
versions? Obviously not looking for lab grade here, just something
mainly to detect signal presence/absence.
Thanks,
Charlie
===========
br> fts!)
r> > rel="noreferrer" target="_blank">http://www.matronics.com/contribution
-Matt Dralle, List Admin.
===========
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Electric-List" rel="noreferrer" target="_blank">http://www.matronics.com/Navigator?AeroElectric-List
===========
FORUMS -
eferrer" target="_blank">http://forums.matronics.com
===========
WIKI -
errer" target="_blank">http://wiki.matronics.com
===========
b Site -
-Matt Dralle, List Admin.
rel="noreferrer" target="_blank">http://www.matronics.com/contribution
===========
|
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art(at)zemon.name
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| Posted: Wed Feb 05, 2020 6:38 pm Post subject: portable oscilloscope recommendations? |
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Charlie,
When I was debugging a serial port issue, my son borrowed a logic analyzer from his office and we connected it via USB to his laptop. When clipped to the TX and RX pins, it was able to decode and display the ASCII characters being transmitted. Much more useful than a simple oscilloscope would have been. See if you can find one of these logic analyzers that hooks up to a laptop.
-- Art Z.
On Wed, Feb 5, 2020 at 8:11 PM Charlie England <ceengland7(at)gmail.com (ceengland7(at)gmail.com)> wrote:
| Quote: | --> AeroElectric-List message posted by: Charlie England <ceengland7(at)gmail.com (ceengland7(at)gmail.com)>
Hi,
I've been troubleshooting a serial port issue, & fired up the old
Telequipment scope for the 1st time in about a decade. Spent more time
bringing it out of hibernation than actually using it, and it occurred
to me that at today's prices, an el-cheapo solid state scope might make
sense to have next to the digital meters (or maybe, in place of...).
Anyone here tried any of the sub-$100 models, or even the sub-$50
versions? Obviously not looking for lab grade here, just something
mainly to detect signal presence/absence. |
--
https://CheerfulCurmudgeon.com/Sooner meet a bereaved she-bear than a fool with his nonsense. Proverbs 17:12
| | - The Matronics AeroElectric-List Email Forum - | | | Use the List Feature Navigator to browse the many List utilities available such as the Email Subscriptions page, Archive Search & Download, 7-Day Browse, Chat, FAQ, Photoshare, and much more:
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Eric Page
Joined: 15 Feb 2017
Posts: 245
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| Posted: Wed Feb 05, 2020 7:24 pm Post subject: Re: portable oscilloscope recommendations? |
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If you truly just want to see the presence or absence of a signal, one of the cheap 1-channel Chinese scopes work pretty well. I have one of these...
http://www.ebay.com/itm/163807642144
...and it's surprisingly decent for basic troubleshooting away from your bench. It's low-bandwidth and probably isn't very accurate, but it works to see if there's activity or not.
If you want to decode a serial bus to see what's happening, this is a decent option at low cost:
http://www.ebay.com/itm/123355594893
Or, if you want even cheaper, there's this option:
http://www.ebay.com/itm/383085783631
Eric
P.S. All three links are to the lowest cost U.S. seller. All are available cheaper from China if you want to wait a few weeks.
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ceengland7(at)gmail.com
Guest
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| Posted: Wed Feb 05, 2020 7:36 pm Post subject: portable oscilloscope recommendations? |
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Hmmm... good thought. I might consider two instruments, instead of just one. A scope would have a wider application, though.
Thanks for the idea.
Charlie
On 2/5/2020 8:34 PM, Art Zemon wrote:
| Quote: | Charlie,
When I was debugging a serial port issue, my son borrowed a logic analyzer from his office and we connected it via USB to his laptop. When clipped to the TX and RX pins, it was able to decode and display the ASCII characters being transmitted. Much more useful than a simple oscilloscope would have been. See if you can find one of these logic analyzers that hooks up to a laptop.
-- Art Z.
On Wed, Feb 5, 2020 at 8:11 PM Charlie England <ceengland7(at)gmail.com (ceengland7(at)gmail.com)> wrote:
| Quote: | --> AeroElectric-List message posted by: Charlie England <ceengland7(at)gmail.com (ceengland7(at)gmail.com)>
Hi,
I've been troubleshooting a serial port issue, & fired up the old
Telequipment scope for the 1st time in about a decade. Spent more time
bringing it out of hibernation than actually using it, and it occurred
to me that at today's prices, an el-cheapo solid state scope might make
sense to have next to the digital meters (or maybe, in place of...).
Anyone here tried any of the sub-$100 models, or even the sub-$50
versions? Obviously not looking for lab grade here, just something
mainly to detect signal presence/absence. |
--
https://CheerfulCurmudgeon.com/ Sooner meet a bereaved she-bear than a fool with his nonsense. Proverbs 17:12
|
| | - The Matronics AeroElectric-List Email Forum - | | | Use the List Feature Navigator to browse the many List utilities available such as the Email Subscriptions page, Archive Search & Download, 7-Day Browse, Chat, FAQ, Photoshare, and much more:
http://www.matronics.com/Navigator?AeroElectric-List |
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ceengland7(at)gmail.com
Guest
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| Posted: Wed Feb 05, 2020 7:44 pm Post subject: portable oscilloscope recommendations? |
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Hmmm....I was more focused on a self contained instrument, but that path might actually be a better idea. I'll did through the site to evaluate.
Thanks!
Charlie
On 2/5/2020 8:31 PM, William Greenley wrote:
| Quote: | I have use the pokit meter from https://pokitmeter.com/ Multimeter, single channel scope and data logger, uses your phone as a display.
On Wed, Feb 5, 2020 at 9:00 PM Charlie England <ceengland7(at)gmail.com (ceengland7(at)gmail.com)> wrote:
| Quote: | --> AeroElectric-List message posted by: Charlie England <ceengland7(at)gmail.com (ceengland7(at)gmail.com)>
Hi,
I've been troubleshooting a serial port issue, & fired up the old
Telequipment scope for the 1st time in about a decade. Spent more time
bringing it out of hibernation than actually using it, and it occurred
to me that at today's prices, an el-cheapo solid state scope might make
sense to have next to the digital meters (or maybe, in place of...).
Anyone here tried any of the sub-$100 models, or even the sub-$50
versions? Obviously not looking for lab grade here, just something
mainly to detect signal presence/absence.
Thanks,
Charlie
===========
br> fts!)
r> > rel="noreferrer" target="_blank">http://www.matronics.com/contribution
-Matt Dralle, List Admin.
===========
-
Electric-List" rel="noreferrer" target="_blank">http://www.matronics.com/Navigator?AeroElectric-List
===========
FORUMS -
eferrer" target="_blank">http://forums.matronics.com
===========
WIKI -
errer" target="_blank">http://wiki.matronics.com
===========
b Site -
-Matt Dralle, List Admin.
rel="noreferrer" target="_blank">http://www.matronics.com/contribution
===========
|
|
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matronics(at)rtist.nl
Guest
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| Posted: Wed Feb 05, 2020 11:14 pm Post subject: portable oscilloscope recommendations? |
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That's the Rolls Royce option. Does it make sense to hunt for a logic analyzer when it will likely be sitting idle for the next decade? A simple multimeter with scope option is a lot cheaper and will get more use.
Rob
On 2/6/2020 4:32 AM, Charlie England wrote:
| Quote: | Hmmm... good thought. I might consider two instruments, instead of just one. A scope would have a wider application, though.
Thanks for the idea.
Charlie
On 2/5/2020 8:34 PM, Art Zemon wrote:
| Quote: | Charlie,
When I was debugging a serial port issue, my son borrowed a logic analyzer from his office and we connected it via USB to his laptop. When clipped to the TX and RX pins, it was able to decode and display the ASCII characters being transmitted. Much more useful than a simple oscilloscope would have been. See if you can find one of these logic analyzers that hooks up to a laptop.
-- Art Z.
On Wed, Feb 5, 2020 at 8:11 PM Charlie England <ceengland7(at)gmail.com (ceengland7(at)gmail.com)> wrote:
| Quote: | --> AeroElectric-List message posted by: Charlie England <ceengland7(at)gmail.com (ceengland7(at)gmail.com)>
Hi,
I've been troubleshooting a serial port issue, & fired up the old
Telequipment scope for the 1st time in about a decade. Spent more time
bringing it out of hibernation than actually using it, and it occurred
to me that at today's prices, an el-cheapo solid state scope might make
sense to have next to the digital meters (or maybe, in place of...).
Anyone here tried any of the sub-$100 models, or even the sub-$50
versions? Obviously not looking for lab grade here, just something
mainly to detect signal presence/absence. |
--
https://CheerfulCurmudgeon.com/ Sooner meet a bereaved she-bear than a fool with his nonsense. Proverbs 17:12
|
|
| | - The Matronics AeroElectric-List Email Forum - | | | Use the List Feature Navigator to browse the many List utilities available such as the Email Subscriptions page, Archive Search & Download, 7-Day Browse, Chat, FAQ, Photoshare, and much more:
http://www.matronics.com/Navigator?AeroElectric-List |
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dj_theis
Joined: 28 Aug 2017
Posts: 56
Location: Minnesota
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| Posted: Thu Feb 06, 2020 5:33 am Post subject: Re: portable oscilloscope recommendations? |
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Quote:
>Anyone here tried any of the sub-$100 models, or even the sub-$50
>versions? Obviously not looking for lab grade here, just something
>mainly to detect signal presence/absence.
A very capable hangar neighbor of mine showed me this unit that connects to a PC.
https://www.picotech.com/products/oscilloscope
The base level unit (~$80) is quite capable and can log the the waveform and continuously convert the waveform to ASCII characters. I think this is similar (or the same) as what Art Z. described.
The manufacturer offers some very high end scopes and claims to extend their quality and performance through their entire line.
I’ve not purchased one (yet) as my legacy big box scopes are still working but for convenience and added functionality I’m looking forward for an excuse to purchasing one.
Dan Theis
| | - The Matronics AeroElectric-List Email Forum - | | | Use the List Feature Navigator to browse the many List utilities available such as the Email Subscriptions page, Archive Search & Download, 7-Day Browse, Chat, FAQ, Photoshare, and much more:
http://www.matronics.com/Navigator?AeroElectric-List |
|
_________________
Dan Theis
Scratch building Sonex #1362
Still working on the Revmaster Alternator improvement |
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ceengland7(at)gmail.com
Guest
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| Posted: Thu Feb 06, 2020 5:47 am Post subject: portable oscilloscope recommendations? |
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In general, I'd agree, but a toe in the web waters found that not everything has been tariffed out of existence (yet). The 1st example I found:
https://smile.amazon.com/HiLetgo-Analyzer-Ferrite-Channel-Arduino/dp/B077LSG5P2/ref=sr_1_2_sspa?crid=1A07VX9T9OILX&keywords=logic+analyzer&qid=1580995620&sprefix=ogic+anal%2Caps%2C206&sr=8-2-spons&psc=1&spLa=ZW5jcnlwdGVkUXVhbGlmaWVyPUEyTzVFVUlIUVlGWlIyJmVuY3J5cHRlZElkPUEwNTI2NzYyMjEzSU9FVFVPUjBLVCZlbmNyeXB0ZWRBZElkPUEwOTc0MDg3M1E5VzlKVUk4RlBZTiZ3aWRnZXROYW1lPXNwX2F0ZiZhY3Rpb249Y2xpY2tSZWRpcmVjdCZkb05vdExvZ0NsaWNrPXRydWU=
That would be less expensive than a new set of voltmeter probes.  And it seems to have the somewhat weird sounding advantage of *not* having batteries, since I've managed to damage several rarely used instruments by forgetting about the installed batteries.
Charlie
On Thu, Feb 6, 2020 at 1:20 AM Rob Turk <matronics(at)rtist.nl (matronics(at)rtist.nl)> wrote:
| Quote: | That's the Rolls Royce option. Does it make sense to hunt for a logic analyzer when it will likely be sitting idle for the next decade? A simple multimeter with scope option is a lot cheaper and will get more use.
Rob
On 2/6/2020 4:32 AM, Charlie England wrote:
| Quote: | Hmmm... good thought. I might consider two instruments, instead of just one. A scope would have a wider application, though.
Thanks for the idea.
Charlie
On 2/5/2020 8:34 PM, Art Zemon wrote:
| Quote: | Charlie,
When I was debugging a serial port issue, my son borrowed a logic analyzer from his office and we connected it via USB to his laptop. When clipped to the TX and RX pins, it was able to decode and display the ASCII characters being transmitted. Much more useful than a simple oscilloscope would have been. See if you can find one of these logic analyzers that hooks up to a laptop.
-- Art Z.
On Wed, Feb 5, 2020 at 8:11 PM Charlie England <ceengland7(at)gmail.com (ceengland7(at)gmail.com)> wrote:
| Quote: | --> AeroElectric-List message posted by: Charlie England <ceengland7(at)gmail.com (ceengland7(at)gmail.com)>
Hi,
I've been troubleshooting a serial port issue, & fired up the old
Telequipment scope for the 1st time in about a decade. Spent more time
bringing it out of hibernation than actually using it, and it occurred
to me that at today's prices, an el-cheapo solid state scope might make
sense to have next to the digital meters (or maybe, in place of...).
Anyone here tried any of the sub-$100 models, or even the sub-$50
versions? Obviously not looking for lab grade here, just something
mainly to detect signal presence/absence. |
--
https://CheerfulCurmudgeon.com/ Sooner meet a bereaved she-bear than a fool with his nonsense. Proverbs 17:12
|
|
|
| | - The Matronics AeroElectric-List Email Forum - | | | Use the List Feature Navigator to browse the many List utilities available such as the Email Subscriptions page, Archive Search & Download, 7-Day Browse, Chat, FAQ, Photoshare, and much more:
http://www.matronics.com/Navigator?AeroElectric-List |
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ceengland7(at)gmail.com
Guest
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| Posted: Thu Feb 06, 2020 5:53 am Post subject: portable oscilloscope recommendations? |
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Hi Dan,
Thanks for the link. That does look interesting, but until I get around to setting up an actual electronics bench again, my desire is for something I can easily take to the work area, like a hand-held VOM. I do have the Telequipment and also a 10 NHz Tectronics analog scope for bench work, but balancing one of them on the wing of the a/c for troubleshooting isn't fun.
Charlie
On Thu, Feb 6, 2020 at 7:39 AM dj_theis <djtheis58(at)gmail.com (djtheis58(at)gmail.com)> wrote:
| Quote: | --> AeroElectric-List message posted by: "dj_theis" <djtheis58(at)gmail.com (djtheis58(at)gmail.com)>
Quote:
>Anyone here tried any of the sub-$100 models, or even the sub-$50
>versions? Obviously not looking for lab grade here, just something
>mainly to detect signal presence/absence.
A very capable hangar neighbor of mine showed me this unit that connects to a PC.
https://www.picotech.com/products/oscilloscope
The base level unit (~$80) is quite capable and can log the the waveform and continuously convert the waveform to ASCII characters. I think this is similar (or the same) as what Art Z. described.
The manufacturer offers some very high end scopes and claims to extend their quality and performance through their entire line.
I’ve not purchased one (yet) as my legacy big box scopes are still working but for convenience and added functionality I’m looking forward for an excuse to purchasing one.
Dan Theis
|
| | - The Matronics AeroElectric-List Email Forum - | | | Use the List Feature Navigator to browse the many List utilities available such as the Email Subscriptions page, Archive Search & Download, 7-Day Browse, Chat, FAQ, Photoshare, and much more:
http://www.matronics.com/Navigator?AeroElectric-List |
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matronics(at)rtist.nl
Guest
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| Posted: Thu Feb 06, 2020 9:33 am Post subject: portable oscilloscope recommendations? |
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Be careful though. This appears to be an Arduino with some software. Cute but not up to the task for real RS-232. The inputs are standard TTL and will fry if you attach RS-232 level signals to it. You'd have to add a level shifter (MAX232 or something like it), or a limiter of some sorts.
On 2/6/2020 2:42 PM, Charlie England wrote:
| Quote: | In general, I'd agree, but a toe in the web waters found that not everything has been tariffed out of existence (yet). The 1st example I found:
https://smile.amazon.com/HiLetgo-Analyzer-Ferrite-Channel-Arduino/dp/B077LSG5P2/ref=sr_1_2_sspa?crid=1A07VX9T9OILX&keywords=logic+analyzer&qid=1580995620&sprefix=ogic+anal%2Caps%2C206&sr=8-2-spons&psc=1&spLa=ZW5jcnlwdGVkUXVhbGlmaWVyPUEyTzVFVUlIUVlGWlIyJmVuY3J5cHRlZElkPUEwNTI2NzYyMjEzSU9FVFVPUjBLVCZlbmNyeXB0ZWRBZElkPUEwOTc0MDg3M1E5VzlKVUk4RlBZTiZ3aWRnZXROYW1lPXNwX2F0ZiZhY3Rpb249Y2xpY2tSZWRpcmVjdCZkb05vdExvZ0NsaWNrPXRydWU=
That would be less expensive than a new set of voltmeter probes. And it seems to have the somewhat weird sounding advantage of *not* having batteries, since I've managed to damage several rarely used instruments by forgetting about the installed batteries.
Charlie
On Thu, Feb 6, 2020 at 1:20 AM Rob Turk <matronics(at)rtist.nl (matronics(at)rtist.nl)> wrote:
| Quote: | That's the Rolls Royce option. Does it make sense to hunt for a logic analyzer when it will likely be sitting idle for the next decade? A simple multimeter with scope option is a lot cheaper and will get more use.
Rob
On 2/6/2020 4:32 AM, Charlie England wrote:
| Quote: | Hmmm... good thought. I might consider two instruments, instead of just one. A scope would have a wider application, though.
Thanks for the idea.
Charlie
On 2/5/2020 8:34 PM, Art Zemon wrote:
| Quote: | Charlie,
When I was debugging a serial port issue, my son borrowed a logic analyzer from his office and we connected it via USB to his laptop. When clipped to the TX and RX pins, it was able to decode and display the ASCII characters being transmitted. Much more useful than a simple oscilloscope would have been. See if you can find one of these logic analyzers that hooks up to a laptop.
-- Art Z.
On Wed, Feb 5, 2020 at 8:11 PM Charlie England <ceengland7(at)gmail.com (ceengland7(at)gmail.com)> wrote:
| Quote: | --> AeroElectric-List message posted by: Charlie England <ceengland7(at)gmail.com (ceengland7(at)gmail.com)>
Hi,
I've been troubleshooting a serial port issue, & fired up the old
Telequipment scope for the 1st time in about a decade. Spent more time
bringing it out of hibernation than actually using it, and it occurred
to me that at today's prices, an el-cheapo solid state scope might make
sense to have next to the digital meters (or maybe, in place of...).
Anyone here tried any of the sub-$100 models, or even the sub-$50
versions? Obviously not looking for lab grade here, just something
mainly to detect signal presence/absence. |
--
https://CheerfulCurmudgeon.com/ Sooner meet a bereaved she-bear than a fool with his nonsense. Proverbs 17:12
|
|
|
|
| | - The Matronics AeroElectric-List Email Forum - | | | Use the List Feature Navigator to browse the many List utilities available such as the Email Subscriptions page, Archive Search & Download, 7-Day Browse, Chat, FAQ, Photoshare, and much more:
http://www.matronics.com/Navigator?AeroElectric-List |
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ceengland7(at)gmail.com
Guest
|
| Posted: Thu Feb 06, 2020 10:49 am Post subject: portable oscilloscope recommendations? |
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Good point, but I just linked that item to show how stupid cheap decent test gear is getting. The 30V 10A fully adjustable voltage *and* current limiting supply I bought recently for ~$60 would have cost me at least $300 30 years ago, *in 1990 dollars*. It's almost like they're paying you to take the stuff.
On 2/6/2020 11:30 AM, Rob Turk wrote:
| Quote: | Be careful though. This appears to be an Arduino with some software. Cute but not up to the task for real RS-232. The inputs are standard TTL and will fry if you attach RS-232 level signals to it. You'd have to add a level shifter (MAX232 or something like it), or a limiter of some sorts.
On 2/6/2020 2:42 PM, Charlie England wrote:
| Quote: | In general, I'd agree, but a toe in the web waters found that not everything has been tariffed out of existence (yet). The 1st example I found:
https://smile.amazon.com/HiLetgo-Analyzer-Ferrite-Channel-Arduino/dp/B077LSG5P2/ref=sr_1_2_sspa?crid=1A07VX9T9OILX&keywords=logic+analyzer&qid=1580995620&sprefix=ogic+anal%2Caps%2C206&sr=8-2-spons&psc=1&spLa=ZW5jcnlwdGVkUXVhbGlmaWVyPUEyTzVFVUlIUVlGWlIyJmVuY3J5cHRlZElkPUEwNTI2NzYyMjEzSU9FVFVPUjBLVCZlbmNyeXB0ZWRBZElkPUEwOTc0MDg3M1E5VzlKVUk4RlBZTiZ3aWRnZXROYW1lPXNwX2F0ZiZhY3Rpb249Y2xpY2tSZWRpcmVjdCZkb05vdExvZ0NsaWNrPXRydWU=
That would be less expensive than a new set of voltmeter probes. And it seems to have the somewhat weird sounding advantage of *not* having batteries, since I've managed to damage several rarely used instruments by forgetting about the installed batteries.
Charlie
On Thu, Feb 6, 2020 at 1:20 AM Rob Turk <matronics(at)rtist.nl (matronics(at)rtist.nl)> wrote:
| Quote: | That's the Rolls Royce option. Does it make sense to hunt for a logic analyzer when it will likely be sitting idle for the next decade? A simple multimeter with scope option is a lot cheaper and will get more use.
Rob
On 2/6/2020 4:32 AM, Charlie England wrote:
| Quote: | Hmmm... good thought. I might consider two instruments, instead of just one. A scope would have a wider application, though.
Thanks for the idea.
Charlie
On 2/5/2020 8:34 PM, Art Zemon wrote:
| Quote: | Charlie,
When I was debugging a serial port issue, my son borrowed a logic analyzer from his office and we connected it via USB to his laptop. When clipped to the TX and RX pins, it was able to decode and display the ASCII characters being transmitted. Much more useful than a simple oscilloscope would have been. See if you can find one of these logic analyzers that hooks up to a laptop.
-- Art Z.
On Wed, Feb 5, 2020 at 8:11 PM Charlie England <ceengland7(at)gmail.com (ceengland7(at)gmail.com)> wrote:
| Quote: | --> AeroElectric-List message posted by: Charlie England <ceengland7(at)gmail.com (ceengland7(at)gmail.com)>
Hi,
I've been troubleshooting a serial port issue, & fired up the old
Telequipment scope for the 1st time in about a decade. Spent more time
bringing it out of hibernation than actually using it, and it occurred
to me that at today's prices, an el-cheapo solid state scope might make
sense to have next to the digital meters (or maybe, in place of...).
Anyone here tried any of the sub-$100 models, or even the sub-$50
versions? Obviously not looking for lab grade here, just something
mainly to detect signal presence/absence. |
--
https://CheerfulCurmudgeon.com/ Sooner meet a bereaved she-bear than a fool with his nonsense. Proverbs 17:12
|
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