• RE: RSA6120B is missing serial number and model information

    Hi John,<br> <br> This most often happens when the system detects some tampering with the licensing system, or if the firmware is down-graded below v3.3.&#160; Other causes could be due to some hardware failure.&#160; In all cases however, the unit will need to be serviced by Tektronix to restore the serial number and licenses.
  • RE: My oscilloscope 2432A has a noisy trace

    The 2432A is a 300MHz scope, so it is quite normal to have some noise on the trace with nothing connected at the input.  Since this scope features a digitizer to sample the waveform, the noise appears more apparent than it would from just a live analog trace where the noise would appear muted due to the phosphor glowing brighter in the middle of the trace.
  • RE: RSA3408B Option 10 (Audio THD)

    The THD measurement can be made on audio signals - either directly (baseband), or as demodulated from an AM or FM modulated carrier.  The measurement can be performed on audio frequencies from 20Hz to 100kHz.
  • RE: meas for phase delay from pos edge of chan1 to pos edge of chan2?

    This should get you started:

    To add the measurement, use MEASU:MEASn:Type phase, where n is the measurement number (assuming you have more than one measurement defined)
    To configure the sources, use MEASU:MEASn:SOURCEx CHy, where x is 1 or 2, to define the two sources for the Phase measurement, and y is the channel number you're setting to a given source.
    For example:
    MEASUrement:MEAS1:TYPE phase 
    adds the Phase measurement badge as measurement 1
    MEASUrement:MEAS1:SOUrce1 CH2
    MEASUrement:MEAS1:SOUrce2 CH3
    sets CH2 as the first source and CH3 as the second source for the Phase measurement.

    To read the current mean value of the measurement:
  • RE: MSO4/5/6 Series Channel Label doesn't track with Ch. Offset

    Channel labels applied via the Channel Badge will always be lined up with the Channel Handles, whether an offset is used or not.  If you prefer to have a label that is not lined up with the channel handle, you can use the "Callout" feature (button on the upper right corner of the display).  You can add an unlimited number of Callouts.  There are four different types of callouts:  

    • Note: simple on-screen text
    • Arrow: on-screen text with an arrow you can use to point at something
    • Rectangle:  on-screen text with a user-sizable/moveable rectangle
    • Bookmark: on-screen text *and* a probe-point that you can position on a trace for an instant readout

    The format of the text, including font, size, and color, is all user adjustable.  Callouts can be placed anywhere on the screen.

  • RE: AFG3000 series and Arbexpress - creating a sine waveform

    This can be done using the Burst Mode on each channel.  With the sine frequency of 27kHz, if you set the number of cycles in the Burst Mode to be 270,000 then the burst duration will be 10 seconds.  You then set the Trigger Interval to 20 seconds, and you'll get the 10 seconds "on" and 10 seconds "off".  Do the same for the second channel, but set the delay to 10 seconds. This will cause the 2nd channel to come on when the first channel turns off.

    Unfortunately, there isn't a way of easily changing the amplitude on consecutive bursts.  You can do this manually (adjust CH1 while CH2 is playing, and vice versa), or programmatically.
  • RE: Vintage 11302 and TEKCATS ....problems

    You may want to check with the fine folks at VintageTEK.org.  They may have the firmware images for the 11302.
  • RE: MSO/DPO5000/7000 Series and MSO4/5/6 Series Single Acquisition Keep History

    On the 4/5/6 Series scopes, the measurement system does keep the statistics of consecutive acquisitions (provided no configuration changes were made between acquisitions).  To see the accumulated statistics, simply add a Measurement Results Table.  You can do this by clicking/tapping the "Results Table" on-screen button in the upper right corner of the display, and then selecting Measurements.  On the result table, there will be two sets of statistical data (mean, min, max, stddev, population). The set to the left are the "local" stats, which are updated with each acquisition.  The set to the right are the running accumulated statistics.
  • RE: Repairing Tektronix 222 - shorted transformer

    This part is no longer available from Tektronix.  However, I have been able to determine that it is a 1:1 transformer with the primary inductance of 0.1mH, designed to operate at 40kHz.  Maybe this will help you to find a replacement, or re-wind the faulty unit.
  • RE: Which command group to retrieve the specturm measurement results of MSO44?

    Hello Jeremy,
    You would typically use the same commands to recall any other measurement result:
    where <n> is replaced with the relevant measurement number.
    However, it does appear that there is a bug in the firmware that is returning in invalid response. This has been reported to our engineering team.