Seamus Brokaw

Thanks, Michael. You are correct Ethernet is more reliable than USB on the 4 Series instruments. A USB to ethernet converter inserted on the laptop is a workaround to the current VISA over USB challenges.

Incremental USB improvements are being made all the time and I hope in a future release that your problems will be resolved!

All of those probes pass our specifications. Step response within 50ns can vary +-5% based on the batch of wafers that went into the construction of the probes.

Probes created in the same batch from the same wafers have more similar performance than probes created 27,000 units apart (as in C169000 to C196000).

Why do some of my TPP1000s show different step response from other ones in the same box?

Specifically I have tested these Serial Numbers:
C169xxx, C185xxx, C196xxx

P77BRWSR comes with replace-able pogo tips included. If the client only damaged these parts you can easily replace these using some tweezers.

Browser replacement tips. Use to repair any browser tips
that are broken with use. (Part number 020-3162-xx.)

The purpose of this letter is to describe in detail one of the software fixes completed in our MSO5/6 version 1.44.3 release. The release notes states “5 Series MSO shuts down from invalid temperature reading”.

https://www.tek.com/en/support/product-support
Version:          [1.44.3.433]
Last Revised:     [22-Aug-2022]
Products:         This firmware supports 4, 5 and 6 Series MSO products
This firmware version is intended for:
    MSO44, MSO46, MSO54, MSO54B, MSO56, MSO56B, MSO58, MSO58B, MSO58LP,
    LPD64, MSO64, MSO64B, MSO66B and MSO68B

New Features:
    - Enhanced waveview mask hits feature with consecutive waveform hits.
      When the Consecutive Failures setting is greater than 1, then the scope tracks
      consecutive waveform mask hits and reports pass/fail.
    - Multi Source Cursor Readouts are shown in waveview or on Cursor badge.
      Configure Cursor Type as Waveform and Cursor Source as “All”.
      This will display signal voltage and delta cursor values of all
      active sources
    - Display Vertical Offset in the waveview channel handles. Configure Channel Offset
      from the Channel Vertical settings page. This will display the offset (if any)
      directly in the waveview without opening the Channel context panel
    - Display Spectrogram for the active channel Spectrum View
    - Show Measurement annotations on Spectrum View measurements

    - Wide Band Gap – Double Pulse Test (WBG-DPT)
        - New measurements added:
            - Switching d/dt for voltage and current source
            - Diode d/dt
            - Irr – Reverse Recovery Current statistics
        - Overlayed plot added in Reverse Recovery Time (Trr) measurement.
          User can view Trr results in single or overlay mode based on the selected
          pulse region
        - Search direction feature extended to Backward in addition to
          Forward direction
        - WBG-DPT specific Deskew added to adjust the skew between double pulse
          switching signals. WBG Deskew calculates the skew between Drain to Source
          Voltage (Vds) and Drain Current (Id) or Collector to Emitter Voltage (Vce)
          and Collector Current (Ic) when Power Device is MOSFET or IGBT respectively.
          The skew value is then applied on to the source to which Vds or Vce signal
          is configured on the scope.

    - IMDA updates:
        - Acq trend plot added for Mechanical Power and System Efficiency measurements
        - Measure Speed, Angle, Mechanical Power, and System Efficiency using Resolver sensor

    - 5/6-PWR updates
        - Enable History mode on Power measurements except Single sequence and FRA measurements
        - Power, IMDA and DPM demo files using ref waveform
        - New column is added in FRA results table to show input and output linear
          voltage values

    - Spectrogram is a visual representation of signal strength over time at various frequencies.
      It is a two dimensional graph with third dimension indicating signal strength
        - Cursor A/B support helps to compare spectrums in up to three different locations
          on a single source in a single view
        - Zoom support enables Spectrogram to be drawn for given zoom window in waveview
        - Color Scale helps to set the colors for Minimum and maximum dB units

    - New RF Measurements
        - Channel Power measures the total RF power within the bandwidth defined
          by the channel width
        - ACPR measures the signal power leaking from the main channel into
          adjacent channels upto 5 channels
        - OBW measures the occupied bandwidth

Defects Fixed:
    - When signal amplitude is low then Cycle RMS measurement shows zero population
      with no error message
    - Plugging TPP1000 on CH2 of 6B Series MSO breaks CH1 termination
    - Trigger Setup & Hold image is incorrect
    - Cursor delta value unit on Rf vs Time magnitude trace shows in dBm instead of dB
    - Integration operation at higher record length on math waveform returns
      incorrect result
    - At slow horizontal sweep speed (like 10sec/div), the gated measurements display
      "No data in range" message even when the waveform exists within the gated region
    - No programmable interface command exists to query the success/failure of
      probe AutoZero
    - AutoZero status cannot be queried through *ESR? and :ALLEV?
    - After changing the spectrum view vertical scale, Save and recall session file
      does not recall spectrum view vertical scale
    - 5 Series MSO shuts down from invalid temperature reading
    - On 4 Series MSO, Setup a search, then zoom on one event and try to navigate to
      the next event using navigate button, after some movement the zoom window starts
      to move on its own
    - On 4 Series MSO with Linux OS, Files saved are timestamped with the GMT time
      instead of the set time zone
    - User manual does not show the complete list of help topics in the Contents tab
    - Value returned by :wfmoutpre:pt_order? is incorrect when FastAcq PIXMAP mode is enabled
    - Trigger B Event is being reflected as Trigger A Event
    - FastFrame and saving images/data have sync errors. Sometimes the measurement
      results displayed in the badges for the selected fast frame may not match in the
      saved screen capture
    - Scrolling through Bus decode or Math make the screen flicker
    - When using the control loop response with amplitude profile mode,
      plot generated is not smooth
    - Vertical scale displayed as dB_/div instead of dB/div when spectrum view is on
    - Branch queries does not always return results in a fixed order
    - MAV bit is not cleared after scope output is read

Known Issues:
    - Cannot change the time zone from PST to JST through PI command
    - When network directory is successfully mounted, and when the network connection
      is lost, the drive later becomes a phantom drive and cannot be unmounted
    - AFG settings cannot be recalled from setup or session files
    - On 6 Series MSO with FastAcq on, inserting a 4 GHz TDP7704 hangs the scope
    - Autoset restricts the channel vertical scale to 1mW/Div
    - SPI BUS trigger does not trigger on the defined Data
    - TDP77 probes should not be supported on 4 or 5 Series MSO
    - RS232 bus decode can not search for multiple bytes
    - External monitor causes touchscreen to not work properly
    - Linux Scopes have issues with unmounting completely blank drives.
      The similar issue is seen with the network drives as well.
      The workaround is to add some files before unmounting the drives.
      Sometimes the network drive unmount is seen when network connection is lost
    - \n newline character in FILES:MKD PI command crashes scope.
      Workaround is to use the escape character “\” before the “\n”
    - NFS mounts cannot be programmatically set as CWD on 4-Series MSO
    - Save Screen Capture with opposite colors of display colors fails.
      The workaround is to go with Displayed color settings (either normal/inverted)
      rather than the Screen Capture colors while saving the screen captures
    - Spectrum View is turning off when I turn off the Ch1 display. This issue
      happens only when the channel display is turned off from the short-cut right
      click menu. The workaround is to use the context panel display on/off toggle switch.
    - Horizontal scroll bar not available for tab based results table similar to
      measurement results table. Since the scroll bar is not shown, the user has to
      use the touchscreen swipe gestures to scroll horizontally in tables.
    - With History mode On and higher record length (i.e. >1M), some of the computation
      intensive power measurements like magnetic property, harmonics and switching loss
      are expected to run slowly
    - Reference signals with modified skew value are not supported in WBG-DPT
 

Hi Dmitriy,

There is a bug in v1.40 and v1.44 firmware that you cannot mount or unmount an empty network drive. I get around the problem by creating a file or folder in the network drive location first and then mounting.

I don’t know for sure if this is the bug you’re running into since you have successfully mounted the same network locations in the past. Other common problems are the IP address of the network location changed, login info changed, some domain level security changes enforced by your company’s IT department (like blocking access to the ping utility)

delete post

Hello,

I couldn't find any more info in our old databases so I can only speculate based on current products. Most DAC circuits have an ADC hanging off the output to form a feedback loop. Perhaps the "DAC System Failure" indicates the TDS commanded one of the DACs to put out a Voltage and the feedback ADC did not detect any change.

Just a guess, sorry.

I don’t know how to help troubleshoot but I did see the most recent rev of that hybrid 165-2051-02 is available to purchase. You can request a quote at this web form:
https://www.tek.com/en/quote-form?destination=/en/buy/tekstore/quote