Teles Afonso

Hi,

The MSO54 is not capable of doing two independent timebases, but it is capable of recording 80 ms of events at the full 6.25 GS/s, which would allow you to record both of your events at the same time and then zoom in on the event you would like, with no loss of signal fidelity. Higher recording lengths are possible with lower sample rates.

The image attached displays such a setup. Please note the Horizontal menu.

Hi David,

Indeed TekScope Utility is a great community made tool that can get and save waveform data from your instrument.
It appears you want to get the data in quick succession under some event/condition. For that you should go to the "Data Logger" tab in TekScope Utility.
There you can configure it to save analog waveform data on triggering or on a timer.

If TekScope Utility doesn't provide the functionality you need, then you can try the programmer's manual for the DPO2000, together with ready made remote control examples.

Hi John,

As you suspected, I would have to know your radio and signal generator to answer that concretely.

Generally, one would look at the power rating of the signal generator's output and the receiver's input to determine that. The characteristic impedance of each is also important.
If the power rating is too high, attenuators can be used. If there's an impedance mismatch, a matching network might be needed.

Those are the most typical specifications to look at for such considerations.

Hi Jerry,

Sadly we no longer provide new firmware for the THS720.

It appears this is a small bug in 1.44 that will be fixed in the coming releases.

The cause seems to be the "Displayed Colors" and "Screen Capture Colors" options in the "User Preferences" menu being set differently. That is, if both options are set to "Normal" or "Inverted", this bug will not occur.

The current workaround is to set the options identically.

Hi John,
 

SINAD (signal to noise and distortion ratio) is a rather simple measurement of signal quality.
In the radio industry it is used as a standard for measuring input sensitivity of receivers. This is done by choosing the minimum acceptable output SINAD (generally 12 dB) and a signal frequency (1 kHz was mentioned in your post but the RSA306B cannot go that low, a frequency between 9 kHz and 20 kHz must be used instead).

With that information and with equipment monitoring the output of your test receiver, a signal is fed into the receiver and its power level is decreased until the SINAD measurement goes down to 12 dB.
So, for example, if the receiver reached 12 dB SINAD at 0.5 uV, that is its sensitivity. It's the lowest power input level for which the receiver can still output an acceptably clear audio signal.

So, to summarize: the RF frequency generator should be connected to the input of the receiver you are testing, and the output of that receiver to the RSA306B.

Hi Tim,

From what you have shown us, this appears to be a bug.
I ask that you open a ticket with us and we'll work together to solve this issue: https://www.tek.com/en/support/contact-technical-support

Hi,

For a waveform with such high amplitude peaks, you will certainly want to use the histogram mode.

From page 118 of the user manual, on the Low measurement:

" This value is used as 0% whenever high reference, mid reference, or low reference values are needed, such as in fall time or rise time measurements. Calculate using either the min/max or histogram method. The min/max method uses the minimum value found. The histogram method uses the most common value found below the midpoint. This value is measured over the entire waveform or gated region. "

So, your reference level in histogram mode will be 10% above the most common value below the midpoint (this should almost completely eliminate the effect of noise you see on your waveform).

If you wish to know what that exact value is, then I will refer you back to 2) of my first answer.

Hi,

This functionality is not given directly for the reference levels set to percentage mode (although it is available for absolute levels), but there are two options:

1) If you are using the scope manually, you can turn on markers for the rise time measurement and you can then measure the values from the graticule

2) If controlling the instrument remotely, you can calculate the values by getting the high and low values from the scope and then calculating the reference values yourself from the known percentages.

" PERCent specifies that the reference levels are calculated as a percent relative to HIGH and LOW. The percentages are defined using the MEASUrement:REFLevel:PERCent commands "

Hi,

The following link has a few examples of code for remote control for the DSA/DPO70000:
https://forum.tek.com/viewtopic.php?f=580&t=133570

Additionally, the programmer's manual will allow you to take those examples and modified them to your specific needs:
https://www.tek.com/en/oscilloscope/dpo70000-mso70000-manual/dpo70000sx-mso-dpo70000dx-mso-dpo70000c-dpo7000c-mso5000-b-1