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Micsig Tablet Oscilloscope tBook mini TO1104 review (100Mhz 4 channel 'scope)
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Micsig_support:
Hello, Your wishlist 3,  you can see it in the picture.

and we also have the screen mask to make the screens displays better, pls contact our sales to get it. I
Micsig_support:
To lukier.

Do you mean to use the PC software to control scope by PC, we have it already, and you can download it on our official website. it can supports WIFI connection also.
Micsig_support:
Hello EXE,

3. Arbitrary BW limiting. I like it, it is very useful feature in my noisy environment. Is it implemented in hardware or software?---It is hardware.

Gain measurement,Multiple math channels,  and gigabit ethernet, RD reply me they do not have the plan to do them right now.

4. Cursors and scales on FFT---we have it. see pictures here.
lukier:

--- Quote from: nctnico on July 21, 2017, 08:29:13 am ---Gigabit ethernet is not necessary for this kind of equipment (not even for remote desktop). The typical processors inside can't handle this kind datarate. For example: The RTB2004 reaches speeds of (approx) 12Mbit over it's network interface.

--- End quote ---

I guess that after video encoding the bitrate required is not that high, not sure about the impact on latency though. I'm not sure about the statement that SoC can't handle such datarate. I'll run an iperf test with the NanoPi 2 Fire board and report here. I know some SoCs (AFAIR iMX6) can have poor gigabit performance because of bugs.

It still seems silly for me that manufacturers go to such great lengths to save $1-2 or similarly insignificant amount - GbE is standard nowadays. Keysight of course beats Micsig and other companies on penny pinching, as they ask almost 400 GBP for what is essentially a 100Mbit MagJack - DSOXLAN.

This is a minor complaint, actually I like that Micsig integrated a fairly modern SoC platform into the scope, back when other low-cost brands used very outdated Blackfin or lowest-end iMX2 CPUs. Sometimes, the situation is very similar in the high end scopes, when one pays many 10s of thousands $ and gets Core2Duo with USB 2.0, seriously come on. PCs are ridiculously cheap.


--- Quote from: Micsig_support on July 24, 2017, 05:41:29 am ---Do you mean to use the PC software to control scope by PC, we have it already, and you can download it on our official website. it can supports WIFI connection also.

--- End quote ---

I'll try the app, but what RTB2004 does is live view and remote control from the HTML5 compatible web browser, no app required, see how fast it is here:
https://youtu.be/mcgJSKxj0i0?t=281

TO1074 web interface is pretty poor in the comparison. AFAIR the screen shot image updates every few seconds. I thought it might be the limitation of the Ethernet interface, but maybe the CPU is already under heavy usage from the scope app. But S5P4418 has a hardware video encoder, supporting for example H264, so in principle it should be possible to encode and transmit the live screen-stream without bothering the CPU cores too much.

Even with 100Mbit Ethernet the hardware (SoC) should have some headroom, so I bet many features can be fixed/implemented in the software  :-+
exe:

--- Quote from: lukier on July 25, 2017, 03:55:40 pm ---It still seems silly for me that manufacturers go to such great lengths to save $1-2 or similarly insignificant amount - GbE is standard nowadays.

--- End quote ---

What's the use case for this scope requiring 1Gbps link? I'd be worried about 256Mb ram...
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