Products > Test Equipment
New bench scope - Fnirsi 1014D, 7", 1GSa/s
tautech:
--- Quote from: tunk on September 05, 2021, 06:36:40 pm ---The minimum sensitivity is 50mV/div - isn't that a bit limiting?
--- End quote ---
Fatally so.
Connect a 10x probe and it becomes 500mV that makes it unusable for many tasks.
pcprogrammer:
--- Quote from: tautech on September 05, 2021, 07:53:59 pm ---
--- Quote from: tunk on September 05, 2021, 06:36:40 pm ---The minimum sensitivity is 50mV/div - isn't that a bit limiting?
--- End quote ---
Fatally so.
Connect a 10x probe and it becomes 500mV that makes it unusable for many tasks.
--- End quote ---
Since the lowest setting actually is 100mV/div because to get the 50mV/div the software does a times two and makes it just a digital zoom. So it is even worse :-DD
But that being said it is very responsive on the user interface. This is a drawback of the hantek DSO2XXX series, at least the one I have (did not check or upgrade the firmware yet). It responds quite slow to changes of the settings.
For doing measurements on MCU projects it is usable though.
tunk:
Out of curiosity, is this only done for the 50mV range, or
have they "optimised" the design by using hardware for
every second range (0.1V, 0.5, 2, 10 etc.) and software
for the rest (0.05V, 0.2, 1, 5, etc.)?
pcprogrammer:
The scope has 7 ranges (0-6) that can be selected. 6 of them make actual changes in the hardware. You can hear the relays click. So it is only for the change from the one but lowest to the lowest that they use the digital zoom.
--- Code: ---const int8 *volt_div_texts[3][7] =
{
{ "5V/div", "2.5V/div", "1V/div", "500mV/div", "200mV/div", "100mV/div", "50mV/div" },
{ "50V/div", "25V/div", "10V/div", "5V/div", "2V/div", "1V/div", "500mV/div" },
{ "500V/div", "250V/div", "100V/div", "50V/div", "20V/div", "10V/div", "5V/div" }
};
--- End code ---
This is the settings lookup table I implemented in my version of the 1013D code, which uses the same hardware as the 1014D, to display the settings for the different probe magnification factors. The original code works with switch statements to get this done.
tunk:
A hypotetical question: Would it be possible to design a scope where
every second range is hardware (e.g. 5V, 1, 0.2, 0.05, 0.01 and 0.002)
and the rest is software? I.e. trading some resolution for gaining lower
ranges?
And great thanks for your work on the 1013D.
Navigation
[0] Message Index
[#] Next page
[*] Previous page
Go to full version