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Tekbox TBVNA-6000 Getting Started

1 hz – 6 ghz vector network analyzer
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TBVNA-6000
1 Hz – 6 GHz Vector Network Analyzer
Getting Started
Rev.1.0
www.tekbox.com
Tekbox Digital Solutions Vietnam Co. Ltd.
Factory 4, F4, Lot I-3B-1, Saigon Hi-Tech Park, Tan Phu Ward, District 9, Ho Chi Minh City, Vietnam

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  • Page 1 TBVNA-6000 1 Hz – 6 GHz Vector Network Analyzer Getting Started Rev.1.0 www.tekbox.com Tekbox Digital Solutions Vietnam Co. Ltd. Factory 4, F4, Lot I-3B-1, Saigon Hi-Tech Park, Tan Phu Ward, District 9, Ho Chi Minh City, Vietnam...

  • Page 2: Table Of Contents

    Contents Introduction to the TBVNA-6000 Vector Network Analyzer ............3 Safety ............................. 3 Main Features ........................3 Packaging List ......................... 3 Unpacking and Preparations for First Use................4 Software Installation ......................6 First Power - On ........................6 Application Overview ......................7 VNA workflow ........................

  • Page 3: Introduction To The Tbvna-6000 Vector Network Analyzer

    System Requirements The TBVNA-6000 system software requires a Microsoft Windows(R) 7 (SP1) 64 Bit, Windows 10 (R), Windows 11 (R) compatible computer with an USB 2.0 high speed interface, about 200 MB free disk space, an Intel Core I5 (R) processor with 3 GHz clock speed (or equivalent) and 4 GB of system memory as minimum recommendation.

  • Page 4: Unpacking And Preparations For First Use

    1.4 Unpacking and Preparations for First Use. Figure 1-1 TBVNA-6000 side view Carefully unpack the shipping box an remove the packaging material. Carefully check your TBVNA-6000 for any shipping damage. Check if the receiver´s AC mains supply voltage matches the power grid voltage in your country. To do so, turn the analyzer around and have a look at the rear panel.
  • Page 5 For voltages in the range 200 VAC to 240 VAC use the 230 VAC setting. Warning: Mains voltage selector Operating the TBVNA-6000 Analyzer set to the wrong mains supply voltage may damage the equipment. You may connect the Ground Strap of the receiver to your reference ground plane. This will ensure minimum noise and interference pick-up.

  • Page 6: Software Installation

    Figure 1-6 TBVNA-6000 SW installer window The Installer will install both the receiver software as well as the device driver. There will be three TBVNA-6000 icons on the desktop. For normal computer monitors use the “TBVNA6000” icon to launch the software. If you prefer a dark theme, use the “TBVNA6000_dark”...

  • Page 7: Application Overview

    1.7 Application Overview After launching the TBVNA-6000 software, a primary window appears: Figure 1-8 TBVNA-6000 software, primary window By default, the device starts in vector network analyzer mode, with the other features accessible via buttons at the bottom of the main window.

  • Page 8: Measurement Examples

    2 Measurement examples The subsequent chapters assist getting familiar with the user interface of the TBVNA-6000. It starts with simple measurement examples and then goes deeper into details of the TBVNA PC application. The chapters build on each other, so if you miss any fundamental information, you should be able to discover it in a previous chapter.

  • Page 9: Filter Measurement, Frequency Response

    2.1 Filter measurement, frequency response Measurement task: frequency response of a 100 MHz low pass filter in the frequency range 1 kHz – 1 GHz Set start- and stop-frequency, set the port power to -5 dBm and logarithmic sweep. Note that the maximum port power of -5 dBm is limited to the frequency range below 4 GHz.
  • Page 10 Figure 2-4 Calibration window, Calibration-Type tab It is necessary to select a calibration kit. If you don´t use any specific calibration kit, use any of the preconfigured kits for the moment. You can also use this tab to enter the coefficients of any commercial calibration kit and save it for future use.
  • Page 11 Press the "Save Coefficients" button and enter a file name, such as "Through_1kHz_1GHz_log.xcf." The calibration procedure is now complete. Press the "Back" button to return to the main menu. The calibration file is kept in C:\User\username\TekBox\TBVNA-6000\calibration\. You can reload this calibration file via “File” menu for future measurements using the same setup.
  • Page 12 Figure 2-8 Calibration window, Calculate tab Next, we need to specify a diagram to prepare the measurement. Hit the “Diagram” button. Figure 2-9 Main window, Diagram button The diagram window will pop up. First, we want to set up a rectangular diagram. First, select the diagram type. “Rect.
  • Page 13 Now that we've specified the diagram type, we need to add a measurement. Highlight "Diagram_1" and press the "Add Trace" button. This brings up the Trace Dialog, where you may choose from a variety of measurements. As we want to measure the frequency response of a filter, select S21, Magnitude in dB. Finalize the trace setup by hitting the “Add”...
  • Page 14 Pressing the “Single” button starts triggers a single measurement. Alternatively, use the “Continuous” button. Your first measurement is complete. Figure 2-14, frequency response measurement result Double-click into the regions indicated by red rectangles to adjust an axis's scale. Change the values and press the “Apply”...

  • Page 15: Formatting Traces, Markers, Legend And Labels

    2.2 Formatting traces, markers, legend and labels Reload the setup of example 2.1 Open the Diagram – menu in the diagram window and click “Properties” to invoke the Preference menu Figure 2-16 Diagram menu Figure 2-17 Diagram Properties/Preferences, Traces tab Highlight the trace and click the “Setup Appearance”...
  • Page 16 Click the colour wheel and change the trace colour to blue. Change the line width of the trace to 40%. Note that there are several methods to invoke the Trace Properties feature: via the menu Diagram / Properties; via highlighting and right-clicking the trace or simply by double-clicking the trace. Figure 2-19 Trace after formatting Save and load the trace as 100 MHz Low Pass.trc using the Diagram / Properties feature Figure 2-20 Trace saved and loaded...
  • Page 17 To add two label boxes, use the menu Diagram / Add Label. Enter the part number of the filters and place it next to the appropriate traces. Figure 2-22 label editor marker setup marker context menu To add a marker, navigate to the Marker menu. Drag the marker's crosshair over a trace. The marker will then snap and move along the trace.

  • Page 18: 2-Port Calibration, Data Output, Frequency Lists, Limit Lines

    2.3 2-port calibration, data output, frequency lists, limit lines Measurement task: Trans-impedance measurement of an RF current monitoring probe in the frequency range 1 kHz – 1 GHz Set start- and stop-frequency, set the port power to -5 dBm and logarithmic sweep. Note that the maximum port power of -5 dBm is limited to the frequency range below 4 GHz.
  • Page 19 To calculate the transimpedance of a current probe, we simply add 34 dB to the coupling loss. Hit the Diagram button to create a rectangular diagram and press the “Add Trace” button. Instead of assigning a measurement from the Trace Function list, we activate the Equation box and enter following string to add 34dB to the logarithmic value of S21: dB20(S.S21)+34 Figure 2-27 Diagram window Figure 2-28 Trace window with equation...
  • Page 20 Task: export measurement data The easiest way to create a table with the transimpedance values versus frequency is to export the trace to a CSV-file. Figure 2-30 Export Trace to CSV-file feature When we export a trace straight away, we have no influence over how the frequency points are distributed. The basic configuration consists of 201 frequency points spread logarithmically.
  • Page 21 Now we can assign the frequency file as Horizontal List for the CSV export. Figure 2-32 Frequency list for data export assigned When we click the CSV Export button, we get a transimpedance table, which can be easily processed for documentation.
  • Page 22 Task: create limit lines, method 1 There are several methods to create limit lines for the diagram. Press the Diagram button, select the desired trace and press the Trace Edit button to open the trace dialog. Then, click the Edit Limits button. Figure 2-34 CSV –...
  • Page 23 Task: create limit lines, method 2 Limit lines can also be created from traces. Assume the measurement result is used as reference and you want to create a ± 3 dB window. Export the trace as CSV. Furthermore, save the trace as transimpedance_lower_limit.trc and as transimpedance_upper_limit.trc Open the CSV-file and add two columns, one with + 3dB offset and another one with –...
  • Page 24 Task: create limit lines, method 3 Limit lines can also be created manually. Implement following lower limits for the impedance trace 1 kHz -46 dBΩ 1 MHz +12.5 dBΩ 4 MHz +12.5 dBΩ 4 MHz +17 dBΩ 750 MHz +17 dBΩ 750 MHz 0 dBΩ...

  • Page 25: Impedance Measurement, Smith Chart, Multiple Diagrams

    2.4 Impedance measurement, Smith chart, multiple diagrams Task: simultaneously measure S21, S11 and the impedance of a high pass filter Carry out a full 2-port calibration and connect a low pass filter as depicted below: Figure 2-41 setup for full 2-port calibration measurement setup Click the diagram button, create a rectangular diagram and add two traces: S21 and S11, magnitude in dB.
  • Page 26 Hit the diagram button and add another rectangular diagram. Assign a trace with Zin, magnitude. Figure 2-44, Rectangular diagram with Zin added Hit the Single Measurement button, scale the Y-Axis to 15 divisions, top level 150 Ohm, bottom level 0 Ohm Figure 2-45, measurement result Hit the diagram button and a Smith diagram.
  • Page 27 Figure 2-47, measurement result Next, arrange the windows to suit your monitor. Figure 2-48, arranging diagrams...

  • Page 28: Impedance Measurement, Shunt Method, Equations, Bandwidth

    2.5 Impedance measurement, shunt method, equations, bandwidth Task: measure a 0.47 Ohm resistor using the shunt method There are various methods to measure impedances. There are three ways to measure impedance with the VNA. Additional methods require the Bode-Option. Reflection on Port 1 or Port 2 Port 1-2 Shunt Port 1-2 Series Method...
  • Page 29 Create a rectangular diagram and add a trace. Activate the Equation button and enter the equation: 50*S.S21/(2*(1-S.S21)) Figure 2-51, Equation editor Close the Trace dialog, configure the Y-axis to 10 divisions, top level 1 Ohm, bottom level 0 Ohm and set a marker.
  • Page 30 Figure 2-53, Measurement result after decreasing the bandwidth to 100 Hz Reducing the bandwidth increased measurement time, but successfully removed the noise. Entering the equation was actually only an exercise. The shunt impedance method might also be chosen from the large list of Trace Functions. Figure 2-54, Shunt impedance method in the Trace Function list...

  • Page 31: History

    3 History Version Date Application software version Changes V1.0 1.2.2025 V1.0 Initial document Table 3-1 Version History. The application software version refers to the most recent version available at the time of writing the quick reference manual.

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