Author Topic: Micsig STO1104C Tablet scope - with knobs on!  (Read 6403 times)

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Offline Ghislain

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Re: Micsig STO1104C Tablet scope - with knobs on!
« Reply #25 on: March 05, 2021, 09:40:08 am »
Does anyone know a good place to source a Micsig STO1104C 7.4V 7500mAh Li-ion battery? They seem to be impossible to find?
 

Offline Fungus

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Re: Micsig STO1104C Tablet scope - with knobs on!
« Reply #26 on: March 05, 2021, 10:44:56 am »
Does anyone know a good place to source a Micsig STO1104C 7.4V 7500mAh Li-ion battery? They seem to be impossible to find?

Just email Micsig and ask them. They'll probably send you one directly.

I've emailed Micsig a few times and they're very responsive.
« Last Edit: March 05, 2021, 12:29:23 pm by Fungus »
 
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Offline DaneLaw

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Re: Micsig STO1104C Tablet scope - with knobs on!
« Reply #27 on: March 08, 2021, 11:40:54 am »
Tried to check the wfps rate on my unit, and the highest freq I saw was 103k, but mostly around 95k to 100k, which I reckon would indicate an ideal wfps that peaks around 95.000 to 100.000 in ideal circumstance (1ch, specific sett for optimal wfps stats.)
but are using a very crude MiniWare DSO212 to take the out-freq-reading, so could be that Im taking something for granted here: https://i.imgur.com/nNcrhSz.mp4
I notice Micsig showing a YT-video taking a waveform capture reading at 136.0000 but It is likely the newer E-model that is rated higher then C variant..(80k / 130k)
If 95.000 to 100.000 wfps-stats are loyal (C-variant) then it's certainly above spec and quite a bit +20% to 25%.


memory depth cycling, visual / 2160p.


FFT with a 1Hz to 7Ghz  multiRF tool..(though its a crude menu feature on an SDR) https://i.imgur.com/SuaRN6y.mp4)



Though showed carrier signals to around 500MHz (490MHz).
btw that red-value, you can read on top, that tops at 87.500 (125MSa/s) as I recall in FFT mode (70.000 with 1Gs/s) is that the FFT points?.. if not how many FFT points are Micsig able to operate with  as the FFT does seem quite responsive ?
2160p



FFT with one of these 70USD 60MHz DDS from China (FY6900)  https://i.imgur.com/i5Kh1OU.mp4
--

The iOS or Android or PC app.. around 0.25ms in general delay  https://i.imgur.com/9K0mJxu.mp4

The Micsig scopes, works quite good with either a normal RF mouse, or one of these Air mouse, that many are using with fx Media box or TVs..





In lack of a bonafide lab bench, I appreciate the bag, and one can have the current clamps and probes and mouse and all that jazz in the bag' and more or less just put it back in the closet when not in use, quite ideal in my situation and when charging I tend to use these power delivery power banks with PD decoy and can manage around 90watt..https://tinyurl.com/s53ppacu
and really cherish the adjustable 3v to 25v barrel DC aspect for everyday things. https://tinyurl.com/ykd5u3nd
the Micsig scope peaks around 30watt in use while charging batterypack.
The native 12v5A PSU is a noisy fellow. 




The 5V USB is able to run external screens or DDS or take hard drives or SDcards at least up to triple digits of GB.
The USB socket were also able to run USB docks, at least to a certain extent with the test I made with numerous different mouse RF-receivers thrue a USB dock 1-to-4 (RF air mouse remote controller + normal RF mouse and both valid at the same time, could to a certain extent be handy, for a teacher on a crude trainer-setup on fx a big screen or projector, while the student(s) is also able to maneuver the scope in certain demo-scenarios, but the USB was able to take multiple USB inputs at the same time with a dock, for hard drives you, likely need to format for FAT partition.
The small MicroUSB port, not sure what the purpose of that socket is, and same goes for the LAN interface, anybody been able to take advantage of these sockets in a manner where it benefits.   :-//






XY CCT to 55" 4K LG OLED




Not that fund of the latest OTA update (fall 2020 oct12 3.4.39) generally feel it has made the "touch" less responsive.


Micsig STO CCT / 2160p
https://youtu.be/84h7Pve-vpE?t=143

Noob tumbling / 2160
https://youtu.be/Iy2NvuZUYXk?t=7
« Last Edit: March 09, 2021, 05:26:43 pm by DaneLaw »
 

Offline entropi

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Re: Micsig STO1104C Tablet scope - with knobs on!
« Reply #28 on: March 09, 2021, 02:32:41 pm »
Does this scope support analog offset? I don't see it mentioned in the manual.

What I'm referring to: https://www.picotech.com/library/application-note/using-analog-offset-to-maximize-oscilloscope-resolution
 

Online nctnico

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Re: Micsig STO1104C Tablet scope - with knobs on!
« Reply #29 on: March 09, 2021, 02:43:55 pm »
Does this scope support analog offset? I don't see it mentioned in the manual.

What I'm referring to: https://www.picotech.com/library/application-note/using-analog-offset-to-maximize-oscilloscope-resolution
You can assume it does. There is no simple way to apply offset in the digital domain without losing ADC resolution. Picoscope turns it into a feature but what they describe is how the analog frontend of every DSO works. However the amount of offset that can be applied differs between brands.
« Last Edit: March 09, 2021, 02:48:19 pm by nctnico »
There are small lies, big lies and then there is what is on the screen of your oscilloscope.
 

Offline Fungus

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Re: Micsig STO1104C Tablet scope - with knobs on!
« Reply #30 on: March 09, 2021, 02:56:53 pm »
what they describe is how the analog frontend of every DSO works. However the amount of offset that can be applied differs between brands.

The offset isn't usually under direct user control, it's part of the 'scopes calibration.

(If you connect the required offset voltage to an input then do "auto-cal" will it apply that DC offset to the channel until you do "auto-cal" again?)

 

Online nctnico

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Re: Micsig STO1104C Tablet scope - with knobs on!
« Reply #31 on: March 09, 2021, 03:19:58 pm »
what they describe is how the analog frontend of every DSO works. However the amount of offset that can be applied differs between brands.

The offset isn't usually under direct user control, it's part of the 'scopes calibration.
A DSO frontend usually has a DAC which applies an offset to the signal (using a summing amplifier stage) before it goes into the ADC. The offset can consist of the following components: DC calibration offset, voltage offset (=vertical position) and vertical offset (the latter is a fixed number of divisions regardless of the V/div setting).
There are small lies, big lies and then there is what is on the screen of your oscilloscope.
 

Offline Fungus

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Re: Micsig STO1104C Tablet scope - with knobs on!
« Reply #32 on: March 09, 2021, 04:12:29 pm »
what they describe is how the analog frontend of every DSO works. However the amount of offset that can be applied differs between brands.

The offset isn't usually under direct user control, it's part of the 'scopes calibration.
A DSO frontend usually has a DAC which applies an offset to the signal (using a summing amplifier stage) before it goes into the ADC. The offset can consist of the following components: DC calibration offset, voltage offset (=vertical position) and vertical offset (the latter is a fixed number of divisions regardless of the V/div setting).

True.

If you can keep all of the signal on screen by adjusting vertical position then you have "analog vertical offset".

If any part of the signal goes above or below the screen then you run into the risk of overloading the gain amplifiers and the signal could distort.
« Last Edit: March 09, 2021, 04:17:02 pm by Fungus »
 


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