Tektronix Applications Expert

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The MDO 3 Series scopes do not have an AUX input that can be used as a trigger source, so any triggering will need to be done from the analog channels themselves. The MDO 3 Series scope does support remote connectivity options over LAN including e*Scope, LXI compatibility, as well as the features native to VISA compatibility such as programmatic control over LAN. You can find further details about the instrument on its webpage (https://www.tek.com/en/datasheet/3-series-mdo).

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You can control the sample rate of the scope by setting the Horizontal scale and the Record Length (Record Length/Sample Rate = Acquisition Time). If in doubt, or uncertain what settings have been adjusted you can press the Default Setup button to change the horizontal settings back to default values.

Hi,

For the TDS-2KC at 5ms/division (50ms total capture) with a fixed record length of 2500 samples should have a sample rate of 50Ks/sec. Or, it takes about 50ms to fill a 2500 sample record length on this scope.

For the TBS-2KB at 4ms/division (40ms total capture) the scope fixes a sample rate at 312KS/sec which means to fill a 20,000-sample record length takes about 64ms vs the 50ms it took to fill the TDS-2KC’s 2500 sample RL. This makes the update rate appear to be slower than the TDS-2KC.

Also depending on your signals’ frequency, I also think we may be seeing some aliasing effects (due to a lower sample rate), which can show up as a slowed waveform refresh rate.

You can halve your horizontal to 2ms / division (20ms total capture), which for a 20K record length will double the sample rate to 624Ks/sec (fixed value for a RL of 20K samples for this scope) which should help with the refresh rate.

The closest equivalent would likely be the MSO2004B: https://www.tek.com/en/products/oscilloscopes/mso2000-dpo2000 It has an extremely similar programmatic command set and similar performance to the DPO2004. I'd also recommend looking at the newly launched MSO 2 Series scopes (https://www.tek.com/en/products/oscilloscopes/2-series-mso) as they depart a bit further from the DPO 2000 Series footprint but offer more bang-for-your-buck performance wise and come with a translator layer for their command set to assist with programmatic compatibility.

I would highly recommend watching this short YouTube series: https://www.youtube.com/watch?v=Fr_Tga8pFmw&list=PLBfhD_4FPIYvlXXGJHZ-CYqvRAioEbZeP which has a great introduction to SignalVu-PC

We are investigating the effort it will take to update to Windows 11 and do not have a timeline for a release update at this time.

Hello,

It seems that your version of SignalVu is out of date and may be causing the issue. Please update to V4.1.0022 linked below. If this does not fix the issue please let me know.

https://www.tek.com/en/support/software/application/signalvupc-vector-signal-analysis-software--v410022

Unfortunately there is not an option to change the scanning direction to match analog scopes.

Hello,

To simplify the process of datalogging I would recommend using the free software TekScope Utility. It allows you to connect to an MDO4000 scope and configure it to automatically save waveforms on trigger to a host pc. Please see the download link below.

The latest version of TekScope Utility is V1.34 and can be found here: https://forum.tek.com/viewtopic.php?t=140451

Hello,

Yes you are able to save data to a host pc. To do so please refer to page 87 of the user manual for instructions on how to mount a network drive.

https://www.tek.com/en/manual/oscilloscope/456-series-mso-help-5-series-mso