PicoScope 7 Software
Available on Windows, Mac and Linux
USB3 Bandwidth -- Streaming Mode
USB3 Bandwidth -- Streaming Mode
Hello,
I was curious about the upper limit on the data rate in streaming mode. I'm mostly familiar with 3000D and 5000D models. The spec is 125 MS/s total across all channels in 8 bit mode. I've found that on my system, I can get 150 MS/s. I'm curious about why it can't go faster than this. I'm not sure exactly what hardware is inside the scope, but I'm guessing either Cypress EZ-USB FX3 or FTDI FT601, which have both been demonstrated to exceed 360 MByte/s, which would correspond to 360 MS/s for 8 bit samples assuming no packet overhead. Are there any prospects (or hacks) to get the streaming mode data rate up?
Thanks
I was curious about the upper limit on the data rate in streaming mode. I'm mostly familiar with 3000D and 5000D models. The spec is 125 MS/s total across all channels in 8 bit mode. I've found that on my system, I can get 150 MS/s. I'm curious about why it can't go faster than this. I'm not sure exactly what hardware is inside the scope, but I'm guessing either Cypress EZ-USB FX3 or FTDI FT601, which have both been demonstrated to exceed 360 MByte/s, which would correspond to 360 MS/s for 8 bit samples assuming no packet overhead. Are there any prospects (or hacks) to get the streaming mode data rate up?
Thanks
Re: USB3 Bandwidth -- Streaming Mode
Hi alowell,
Apologies for the delay in answering. Coronavirus has had its toll on our ability to respond to posts on the forum.
Technically the maximum rate that you could transfer 8-bit data from a PicoScope over the USB 3 bus would be 250MS/s, however in practice this couldn't be done reliably (without losing data). So the limit has been set at 125MS/s.
Regards,
Gerry
Apologies for the delay in answering. Coronavirus has had its toll on our ability to respond to posts on the forum.
Technically the maximum rate that you could transfer 8-bit data from a PicoScope over the USB 3 bus would be 250MS/s, however in practice this couldn't be done reliably (without losing data). So the limit has been set at 125MS/s.
Regards,
Gerry
Gerry
Technical Specialist
Technical Specialist