hi daniel, anything regarding the actual capabilities of EXT as a digital channel?
can it be used for something more than doing /CS in spi? (only time it's mentioned in either the videos and the manual)
other decode inputs?
i.e: can we do miso/mosi/sck in spi (and end packet with timeout. makes perfect sense)
i.e: can we do ANALOG CH1, ANALOG CH2/DECODE, EXT. DIGITAL/DECODE?
..or display it as a single digital channel ? That would be really useful.
Some old analogue 2-ch scopes had a "trig view" function to give 3 traces
I did some playing around, and I'm able to assign the external trigger as a source for decoding. It basically acts as a bonus single digital channel.
Can it be used as a general-purpose extra trace ( that you trigger from, obviously) ?
Just received a unit to play with - Thanks Daniel.
The answer is yes, the trigger channel can be used as a third, digital channel, and it does NOT have to trigger from that channel, e.g. you can trigger off channel 1, and show 2 analogue channels and third digital channel.
Input range is +/-1.6 or +/-8V, with adjustable threshold.
One initial surprise is the timebase knob is not detented - seems an odd decision ( Y knobs are)
And it has the Star Trek screensaver
Re. the query on SPI decode. You can frame by a configurable CS timeout, so you can display either
1) CS, CLK and either MISO or MOSI
2) CLK, MISO and MISO
This should cover most use cases.
hi daniel, anything regarding the actual capabilities of EXT as a digital channel?
can it be used for something more than doing /CS in spi? (only time it's mentioned in either the videos and the manual)
other decode inputs?
i.e: can we do miso/mosi/sck in spi (and end packet with timeout. makes perfect sense)
i.e: can we do ANALOG CH1, ANALOG CH2/DECODE, EXT. DIGITAL/DECODE?
..or display it as a single digital channel ? That would be really useful.
Some old analogue 2-ch scopes had a "trig view" function to give 3 traces
I did some playing around, and I'm able to assign the external trigger as a source for decoding. It basically acts as a bonus single digital channel.
Can it be used as a general-purpose extra trace ( that you trigger from, obviously) ?
Just received a unit to play with - Thanks Daniel.
The answer is yes, the trigger channel can be used as a third, digital channel, and it does NOT have to trigger from that channel, e.g. you can trigger off channel 1, and show 2 analogue channels and third digital channel.
Input range is +/-1.6 or +/-8V, with adjustable threshold.
One initial surprise is the timebase knob is not detented - seems an odd decision ( Y knobs are)
It's probably an assembly error, if not then this is really bad.
Anyhow, this scoop is not for me; Power supply uses bad unknown CAPS ,pricing is really ridiculous here in Europe, I don't like the way how Keysight has implemented the constant display of the menu on the right side, it contains redundant information also displayed on top and bottom.
How is the noise on the channels ? look like very noisy from Dave his first video.
The answer is yes, the trigger channel can be used as a third, digital channel, and it does NOT have to trigger from that channel, e.g. you can trigger off channel 1, and show 2 analogue channels and third digital channel.
It it shown on screen as a third trace?
The answer is yes, the trigger channel can be used as a third, digital channel, and it does NOT have to trigger from that channel, e.g. you can trigger off channel 1, and show 2 analogue channels and third digital channel.
It it shown on screen as a third trace?
Yes. This channel can be used just like a 1-channel MSO - you don't even need to be using it for trigger - the ext input is just another input when selecting trigger or decode signal sources.
One disappointing omission, no Nth edge burst trigger mode.
Also segmented seems to be limited to 50 segments on the DSOX1102 - I previously though this was a limitation on the low memory EDUX version. Seems an unnecessarily arbitary limitation.
One disappointing omission, no Nth edge burst trigger mode.
Also segmented seems to be limited to 50 segments on the DSOX1102 - I previously though this was a limitation on the low memory EDUX version. Seems an unnecessarily arbitary limitation.
EDUX do not have segmented at all.
Can you measure segmented max speed (segment/s.)
Just using segments time stamps or count trigger out pulses speed
But if think it as "school scope" also wwith it students can learn what is this mode in principle.
Also this talk its own story that this is just toy for serious use but perhaps useful in classroom if they build also good ready learning / teaching support material.
Inside the box is a printed EULA. Contains all the usual crap and looks like it was cut & pasted from a software product.
But utterly pointless as there is no way anyone can prove you even saw it. or even that it was in the box.
"By powering on and using the instrument or machine you agree that you have read, understood, and agree to be bound by the terms of the EULA"
I can't see how this could possibly deemed to be enforceable in any jurisdiciton, even one as messed up as the USA, unless you actually admit to have read it.
Also they seem to have forgotten to include in the box any reference to the free DVM option after registering ( or any information on registering) - mine had a handwritten business card in the box mentioning it !
The datasheet tells you to go here :
http://www.keysight.com/find/1000X-Series-DVM which then asks for an email address & name, which it does not check, before letting you download a file, and
does not ask for the scope serial numberThe file includes a serial number though, with a US manufacturer code. Wonder if this works with other options
<Licenses xmlns="http://www.agilent.com/schemas/SoftwareLicensing/License">
<License>
<LicenseId>22e870ca-9045-40a1-ba81-8f1f4b8caa44</LicenseId>
<ModelNumber>DSOX1102A</ModelNumber>
<SerialNumber>US56240016</SerialNumber>
<FeatureName>digVoltMeter</FeatureName>
<FeatureVersion>0</FeatureVersion>
<!--license does not expire-->
<Signature>FQ7oGZP4U+cy2JKLdASC/t+w9sC0p3bBvlTxCtZfmCmuT7uGfug/UAzQdLTrdLSi/eWwxl5kHGpW2h9+59wJxTwlOLv/gZwcjP1vM35gCya9XD4si+7Jj3vbl64F4jzMukSZtuHXR6RYIVBUcMM+kooy7fzppk8jBok2R9E2gFA=</Signature>
</License>
</Licenses>
"registering" with a differemt set of details produces an identical file.
Something else : the 'Counter' measure option is greyed out for no obvious reason.
Something else : the 'Counter' measure option is greyed out for no obvious reason.
OK figured this out - counter doesn't work when trigger mode is serial - greyed in menu and shows "no signal" if already enabled. No mention of this in the manual.
Can you measure segmented max speed (segment/s.)
Edge triggering on a 1MHz signal at 100ns/div, the timestamps show 19uS between segments
[...] segmented seems to be limited to 50 segments on the DSOX1102 - I previously though this was a limitation on the low memory EDUX version. Seems an unnecessarily arbitary limitation.
EDUX do not have segmented at all.
[...]
But if think it as "school scope" also wwith it students can learn what is this mode in principle.
Also this talk its own story that this is just toy for serious use but perhaps useful in classroom if they build also good ready learning / teaching support material.
If the 50 segment memory were meant for classroom use, why would it be missing entirely the EDUX version?
That does not seem to make sense. I think the segmented memory is meant for "productive" use, but Keysight used it as one of many deliberate constraints, to ensure that the 1000X series does not get too close to their high-end scopes, so they can continue to justify the high-end prices.
Edit: typo...
I don't think it's unreasonable to omit segmented in an educational scope. Education users aren't likely to get into the level of complexity that needs it, and it could cause confusion as when enabled it causes the scope to behave in a somewhat different way.
My comment earlier was based on my mis-reading that the 50 segs was tied to the 100ksamp memory.
And it has the Star Trek screensaver
That screensaver is handy because if there's a dead/stuck pixel you'd just assume it was a star.
I don't think it's unreasonable to omit segmented in an educational scope. Education users aren't likely to get into the level of complexity that needs it, and it could cause confusion as when enabled it causes the scope to behave in a somewhat different way.
Really ?
Where are students going to learn about these features otherwise ?
A taste of features that are implemented in real DSO's in not a bad thing.
Re. the query on SPI decode. You can frame by a configurable CS timeout, so you can display either
1) CS, CLK and either MISO or MOSI
2) CLK, MISO and MISO
This should cover most use cases.
nice.
I'm glad this was finally answered.
I'm making a chart of 2 channel scopes (for my and maybe others benefit, choosing a new scope for home lab.)
I don't think it's unreasonable to omit segmented in an educational scope. Education users aren't likely to get into the level of complexity that needs it, and it could cause confusion as when enabled it causes the scope to behave in a somewhat different way.
Really ?
Where are students going to learn about these features otherwise ?
A taste of features that are implemented in real DSO's in not a bad thing.
I haven't actually once received formal education, at any of the universities I went to, on how to use an oscilloscope or beyond that it plots voltage over time. Not that they didn't have scopes (Tektronix, Yokogawa, HP and later InfiniiVision 2000X) it's just not in the curriculum.
It was primarily hobby use and vocational education after secondary school (radio technician) and places like EEVblog or Agilent's application notes/webcasts that inspired to read up on measurement techniques.
Having one in front of your nose at home is probably the best learning experience.
One initial surprise is the timebase knob is not detented - seems an odd decision ( Y knobs are)
It's probably an assembly error, if not then this is really bad.
Mine has detents.
I don't like the way how Keysight has implemented the constant display of the menu on the right side, it contains redundant information also displayed on top and bottom.
That is how the megazoon IV ASIC works, it maps the display for fast updating. Same with all scopes that use that chip.
How is the noise on the channels ? look like very noisy from Dave his first video.
It's because the updating is fast.
Re. the query on SPI decode. You can frame by a configurable CS timeout, so you can display either
1) CS, CLK and either MISO or MOSI
2) CLK, MISO and MISO
This should cover most use cases.
nice.
I'm glad this was finally answered.
I'm making a chart of 2 channel scopes (for my and maybe others benefit, choosing a new scope for home lab.)
I would take a look if you finish it. Probably looking at about the same scopes if you are looking at this one. Currently working on parts and equipment lists while I plan and start to build a bench area.
Yeah, and it's "funny" (or pathetic) how they in the Keysight vs Tek document have included memory depth while conveniently leaving it out on the Keysight vs Rigol document.
Jeez the scope wars are really getting dirty now
What about comparing the number of channels ? That seems to be an obvious oversight !
And what's with keysight scopes always deriving measurements from the display data instead of the acquisition memory ? Seems to be a serious short coming of their megazoom hardware ?
And what's with keysight scopes always deriving measurements from the display data instead of the acquisition memory ? Seems to be a serious short coming of their megazoom hardware ?
Calling Dr W0lf to the ER... Calling Dr W0lf to the ER...
Jeez the scope wars are really getting dirty now
I wonder who produced that video highlighting the advantage of the Tek regarding measurements from the acquisition memory?
Ahh, wait -- the closing credits gave it away! Who would have thought...
But because Tek have
never been nown to be a dirty competitor, I am sure they have plenty of videos hightlighting the weaknesses of Tek scopes.