Comparison of WELEC W2014A, Tektronix MSO 2014 and Tektronix TDS 5104B Oscilloscope

This comparison was executed as a starting point for the improvement of the Welec Firmware.
Further information about this: http://welecw2000a.sourceforge.net/
Test conditions:
On the left hand side: Welec W2014A with original Welec Firmware Version 1.3
In the middle: Tektronix TDS 5104B as a reference
On the right hand side: Tektronix MSO 2014

Same sinus signal from 1MHz to 100MHz on all three Oscilloscopes.
Settings are all the same: 200mV/ Div; Timebase 10ns/ Div; Sampelrate 1 GS/s
The TDS 5104B is working with 5GS/ s and acts as a reference- other settings are equal.

Category:

Science & Technology

Tags:

• 1
• 100MHz

[123danielsoy]

are probe points the same for three scopes?

[aguapotablees]

hallo 123danielsoy,

s you could see on our video, for all scopes the same Probe point is used. At the moment we are occupied with the investigation of the ringing with signals above 80 MHz. Use Welec as search-string on Youtube.

[savelkaunas]

this is not firmware problem. It is analog part problem- very high atteniuation of high freq,

[hugos31]

good

[colinbeeforth]

I'm sorry, but this demo doesn't mean much. Probes often have poor frequency response. For valid comparisons, use 3 identical 50 ohm coax cables, 3 port resistive splitter and 50 ohm scope input terminations with RF connectors. Then, you will be sure of having the same signal at the input of each scope - then your comparison will be valid. I don't wish to discourage your investigations, but 100MHz is real RF & reflections can easily ruin amplitude measurements.

[yytseng]

I do agree with savelkaunas. Not only the bandwidth issue, but also the channel -channel isolation is big trouble.

[123danielsoy]

buenisimo!..muchas gracias

aguante tek

[123danielsoy]

could we watch a 1nanosec risetime signal to compare preformance?