| Products > Test Equipment |
| FeelTech FY6600 60MHz 2-Ch VCO Function Arbitrary Waveform Signal Generator |
| << < (391/450) > >> |
| pantelei4:
--- Quote from: maxwell3e10 on August 22, 2019, 12:07:27 am ---Here is a picture of a zoom-in on a 1 kHz 20Vpp sine wave. The scope scale is 10 mV/100nsec per division. --- End quote --- FY6800 on a sine wave is about the same result 12bit On the ramp signal, the resolution is 14bit In the first case, the sine pitch is 4mV, in the case of 1mV ramp |
| radiolistener:
That's very interesting. It looks like FY6800 uses 12 bit NCO to generate sine wave. Can you check it on different sine wave frequencies (with different rise time), for example 100 Hz and 100 kHz? |
| pantelei4:
--- Quote from: radiolistener on August 22, 2019, 07:26:27 am ---That's very interesting. It looks like FY6800 uses 12 bit NCO to generate sine wave. Can you check it on different sine wave frequencies (with different rise time), for example 100 Hz and 100 kHz? --- End quote --- think the DAC is 14 bits, but the bit depth limits software. Yes, I measured the value of the step at different frequencies of the generated sine 10 kHz, 1 kHz, 100 Hz, it does not change |
| radiolistener:
So the real resolution for sine wave is just 12 bit :) 14 bit NCO requires more FPGA resources, and probably doesn't fit into EP4CE6, so they decided to limit resolution with 12 bit instead of use more expensive EP4CE10 or EP4CE22 |
| pantelei4:
--- Quote from: radiolistener on August 22, 2019, 07:46:51 am ---So the real resolution for sine wave is just 12 bit :) --- End quote --- The Chinese are cunning, it’s good that they didn’t slip 10 bits. :horse: |
| Navigation |
| Message Index |
| Next page |
| Previous page |