Iris Xu

Hi Barry,<br> Unfortunately, we don't have a way for end users to change the MSO VNC to a different port.<br> <br> -Iris Xu

Carrie,<br> Resistors are passive elements, so whether you had the circuit powered on in this case does not matter. The frequency you're operating at shouldn't introduce reflections just yet.<br> I would recommend watching <a href="https://www.tek.com/en/video/how-to/50-ohms-output-impedance-on-function-generators">this video</a>&#160;from Tek to see exactly what 50 Ohm vs High-Z means within the context of an AFG output, oscilloscope, and how you should expect it to affect your measurements when bringing in a circuit. It gives a better visual example in changes that occur than what I can provide here.<br> <br> -Iris

Carrie,<br> There may be a drop because of a voltage division from what your circuit is composed of, even if you measure at the same location it's injected to.<br> <img alt="" src="https://i.imgur.com/0teEra0.png"><br> How high of a frequency are you operating at?<br> <br> Best,<br> Iris Xu

The TDS2024C and DPO2024B do not have compatible .SET file formatting, nor do we have a software update or program to do so.<br> <br> You could open the TDS2024C .SET file in VIM and manually compare it to the&#160;DPO2024B .SET file, then re-fill the fields that are applicable, but they're quite different in terms of formatting.

Try setting the timeout to be long enough to allow the full image data to be sent. Depending on how you're connected (in this case GPIB) you may need a longer timeout.<br> <br> osc.timeout = 3000

To add the measurements, select Measure->Add Measurement-->(Select Source)-->Measurement Type.
From there, you can add a frequency measurement or scroll with the multipurpose knobs to see other options like positive and negative pulse width.

These measurements use the portion of the acquisition selected in the gating menu. 
You may change the region you're measuring in with (Under Wave Inspector in the front panel) Measure --> More --> Gating.
 

Hi Jeremy,

The image you attached is also the algorithm used by the scope (page 635 in the MSO4 help manual).
Looking at the equation, the values that you need to calculate channel power would be CBW (channel bandwidth), RBW (resolution bandwidth), N (number of data points) and Pk (power at the kth data point.)

• To set/query CBW (the difference between the upper and lower frequency)
  CHx:BANdwidth
  Correction:  MEASUrement:MEASx:CPWIDTh
• To set/query RBW (must set RBW mode to manual first)
  SV:RBWMode MANual
  SV:RBW
• To find N and Pk, you could save the spectrum data and then parse through each point. The Save and Recall command group (2-92 in Programmer Manual) should have the SCPI commands to set up where to save and such. You can also change the record length;
  HORizontal:MODE:RECOrdlength
  You can look more at the acquisition or data command group for other parameters you might want to change.

Hopefully this will be a good starting point. I will let you know if I have any more ideas for working around the bug or edit if I find some more suitable commands for finding this programmatically. 

-Iris

The other two things are also normal in terms of digital signal processing and how spectrum analyzers work.

Along with this, changing the horizontal/vertical scale on the MSO5 series moves both the waveform and graticule relative to the display position, which may be something you're not used to on other scopes.

Hi,

You can use the A and B triggers to set up triggering on sequential events for example, where the A trigger acts as a qualifier. You can read more about their dual usage in page 134 of the MSO 4 series user manual.

As for the SCPI commands you are looking for;

• Setting trigger source to channel 3 (example using edge trigger type):

TRIGger:{A|B}:EDGE:SOUrce CH3
 

• Setting trigger level to 50% can be done with;

TRIGger:{A|B|B:RESET} SETLevel

Furthermore, if you want to know what the trigger parameters are after setting it to 50%, you can also query using (example using trigger A):
TRIGger:A?

-Iris

 

Hi Nathalia,

Please see the Tektronix Sales Contact page in order to get in touch! We will take a further look into your requirements and offer services such as demos and technical support from here.

Thank you for reaching out.