Fluke 199B vs 199C vs 190-202 differences

[tochnia]

Hello,

What are functionality differences between 3 series/generations of Fluke scopemeters? 
Lets presume we are speaking about same level of scope with 2 channel, 200Mhz and 2.5GS/s.
As they are released in 20 year span and I read that some cannot be even upgraded to latest firmware as mentioned by forum members.

[FlexibleMammoth]

B Series has a black and white screen, C series is in color, 190 Series II is available with 2+DVM or 4 channels, has more memory and integrates some features of the prior Medical series devices, Series III is the same as Series II with a higher resolution screen and wifi support. Only the last still receives firmware updates. It is basically impossible to buy used.

[mahyarJbr]

Fluke 199B:
The Fluke 199B is an older model and is part of the Fluke ScopeMeter series. It's a handheld, portable oscilloscope with a built-in multimeter and recorder. Some key features of the 199B might include:

• 200 MHz bandwidth.
• Dual-channel capability.
• Up to 2.5 GS/s (gigasamples per second) sampling rate.
• Limited waveform capture and analysis capabilities compared to more advanced models.

Fluke 199C:
The Fluke 199C is another model in the ScopeMeter series, designed to provide better performance and additional features compared to the 199B. Some key features of the 199C might include:

• Improved bandwidth (higher than 199B).
• Dual-channel capability.
• Faster sampling rate.
• More advanced signal analysis capabilities.
• Enhanced screen and user interface.
• Likely improvements in battery life and ruggedness.

Fluke 190-202:
The Fluke 190-202 is part of the Fluke ScopeMeter 190 Series II. This series represents a more modern and capable line of handheld oscilloscopes. Some key features of the 190-202 might include:

• 200 MHz bandwidth.
• Dual-channel capability.
• Higher sampling rate compared to previous models.
• More advanced waveform analysis and measurement capabilities.
• Larger and higher-resolution display.
• Enhanced battery life and durability.
• Likely additional connectivity options.

[asis]

For Scop's 192-199 (215-225)C series - FlukeView software version 4.4 (v 5.52)
Latest hardware update for Fluke199C v8.04 - with Bus Health activation and twelve language support -> (Fluke 215-225).

For Scop's 190-II series (Fluke 190-062, 190-102, 190-104, 190-202, 190-204, 190-502 ) - FlukeView2 software version 2.0.2.1 (SW90W).

[Andrey_Ak]

Hello! I wanted to buy myself a Fluke 199C.
Tell me, I'm looking at this option:
https://www.ebay.com/itm/285549701043
What problems can there be when purchasing a used appliance? What should I pay attention to, how to choose a good device?

Following the ebay link, the device display shows the message:
"With this ScopeMeter we offer you a free bonus" what does this mean?

For some reason, the other option requires calibration, is it difficult to do?
https://www.ebay.com/itm/395109369202