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Kroks ARINST VNA-PR1, Руководство пользователя

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2-port vector network analyzer ARINST VNA-PR1 
 

 

30 

 

10.3. Phase plot 

10.3.1. The plot shows the dependence of the S-parameter on frequency. The measurement range is 

from minus 180 to plus 180 degrees (Figures 10.3 - 10.6). 

The plot can be represented as an unfolded phase plot. In this case, the measurement range is below 

minus 180 and above plus 180 degrees (Figures 10.4 and 10.6). 

 

  

Figure 10.3 - Phase plot in measurement mode S11 

 

 

Figure 10.4 - Plot of the unwrapped phase in S11 measurement mode 

 

 

Figure 10.5 - Phase plot in measurement mode S21 

 

Содержание ARINST VNA-PR1

Страница 1: ......

Страница 2: ...n Amp and Log Amp 19 9 8 Adjusting the output power of the probe signal generator 20 9 9 Displaying the SWR limit line 20 9 10 Configuring plot parameters 20 9 12 User settings menu 25 9 13 Saving measurement results 26 10 CHARTS AND PLOTS 29 10 1 Smith chart 29 10 2 Polar chart 29 10 3 Phase plot 30 10 4 Plot of the magnitude modulus of the reflection coefficient on a linear scale 31 10 5 Plot of...

Страница 3: ...2 port vector network analyzer ARINST VNA PR1 3 13 RETURN THE DEVICE TO FACTORY SETTINGS 40 14 WARRANTY 41 APPLICATION A ARINST VNA PR1 vector network analyzer software update 42 ...

Страница 4: ...ault stop operation immediately and turn off the device 2 1 6 If you need to leave your workplace turn off the device and other devices Do not leave the working device unattended 2 1 7 Do not use the device in hospitals The use of the device near medical equipment is allowed on ly with the consent of the medical staff 2 2 Additional safety requirements 2 2 1 Use the device only for its intended pu...

Страница 5: ...up delay Number of user settings to save 32 Number of traces to save 32 Operating temperature range 0 40 C Screen diagonal 4 Screen type touch resistive Screen resolution 800 480 Test port connectors type SMA female Maximum current consumption no more when charging the battery 2 A 6 when working on battery power 1 A when working from USB with battery charging7 2 A6 Battery capacity 5000 mAh Time o...

Страница 6: ...ting the test devices and acts as a source and receiver of the signal 2 Measuring port 2 PORT 2 is intended for connecting the test devices and is a signal receiver 3 High frequency connector panel 4 Color resistive screen 4 serves to configure the device through the on screen menu and display measurement results in the form of user defined plots and charts 5 Indication panel 6 Multi function butt...

Страница 7: ...g calculating and displaying the measured parameters of the test device The analyzer provides adjustment of the output power level of the probing signal generator Power ad justment extends the measurement capabilities of active devices and reduces the probability of exceeding the maximum power of the input signal of the P2 port specified in the technical characteristics of the de vice where ARINST...

Страница 8: ...rwa Reflected wave amplitude Uiwa Incident wave amplitude Φrwp Reflected wave phase Φiwp Incident wave phase j 1 Imaginary unit In measurement mode S21 the probing signal incident wave is sent to the first port P1 The test de vice is connected to port P1 on one side and to port P2 on the other In this mode the analyzer can simul taneously measure the parameters S11 according to the algorithm descr...

Страница 9: ...are recorded in the nonvolatile memory which allows avoiding the device setting at the next turn on 8 SCREEN INTERFACE The device displays the results of scanning the frequency range specified by the user in the form of plots and charts The current device settings and interactive buttons for controlling the device interface are located at the bottom of the screen Figure 8 1 Device screen 8 1 The i...

Страница 10: ...itching charts The device screen displays buttons for quick access to four plots with measurement results simultaneously The chart types and their order in the row are set by the user Smith chart or impedance chart polar chart the phase plot of the measured S parameter presented in the range from 180 to 180 S parameter modulus amplitude plot on a linear scale S parameter modulus amplitude plot in ...

Страница 11: ...pensation the SWR limit line the amplitude scale shift and the output power level This section contains the device s serial number and software ver sion Presets section for saving user settings Traces section for saving the results of current measurements traces with the subsequent possibil ity of loading them and comparing them with the current measurement results 9 1 3 To exit the main menu pres...

Страница 12: ...the corresponding button To delete incor rect or previously entered values press Delete Press Cancel to exit the menu without entering values Figure 9 3 Entering numerical values of frequency parameters 9 2 4 There are three ways to set frequency parameters By entering the initial Start and final Stop frequencies the center frequency Center is automati cally assumed to be equal to their half sum T...

Страница 13: ...he resolution of measurements in the DTF and Cable Loss plots Figure 9 5 Points menu for selecting scan points 9 3 Setting parameters for measuring distance to fault 9 3 1 Enter the Scan section of the main menu of the device Set the parameters of the frequency range in accordance with unit 9 2 9 3 2 Press the button DTF range settings The device menu will switch to adjust the time Figure 9 6 or d...

Страница 14: ...requencies FSTOP FSTART Wherein TMAX cannot exceed the value of 9999 99 ns due to the limitation of the bit width of the display menu The time resolution is TMAX 1024 The minimum time shown on the display is TMAX 8 Attention In the case of setting the frequency range at which the maximum propagation time TMAX exceeds the value of 9999 99 ns the button for switching to DTF plot settings will be dis...

Страница 15: ...nu Attention All devices are factory calibrated by the manufacturer Removable SMA adapters screwed onto the instrument connectors are taken as the reference plane When using cable assemblies or addi tional adapters the device must be recalibrated according to the instructions It is recommended to use ready made calibration kits to calibrate the device In order to avoid premature wear of the instru...

Страница 16: ...again Connect the appropriate calibration measure and calibrate the device Back button exit to the main menu Figure 9 9 Device calibration process 9 4 4 Calibration information will appear in the information bar on the screen Factory there is no custom calibration The device is factory calibrated Displayed on the device screen in white SOL SOL T one port two port calibration performed Calibration ...

Страница 17: ...nter the Device section of the main menu Figure 9 10 Option Electrical delay designed to compensate for phase overrun and transfer of the calibration plane when connecting additional cables with low attenuation to the device Let s look at the example of the Smith chart how the Electrical delay option of compensation for the electrical length of the cable works During the measurement process when a...

Страница 18: ...enomenon you need to set an approximate delay value in picoseconds in the device options Formula for calculating the compensation of the time T of propagation of the probing signal along the additional cable where L cable length m С the speed of light m s VF the velocity factor has a value of 1 To convert the T value into picoseconds ps the resulting value must be multiplied by 1012 9 6 4 Enter th...

Страница 19: ...to use external atten uators when measuring the parameters of active devices which reduce the input signal power to a level of no more than 0 dBm 9 7 1 Install external attenuators in the test port circuit of the device 9 7 2 Enter the Device section of the main menu Figure 9 10 9 7 3 When using external attenuators or amplifiers to correctly display the amplitude of the input signal enter the sca...

Страница 20: ... port of the device Use the buttons and to adjust the power output level of the probe signal generator 9 9 Displaying the SWR limit line For ease of use you can set the limit line of the voltage standing wave ratio VSWR The line will be displayed in red on Smith Polar SWR and Log Amp in measurement mode S11 9 9 1 Enter the Device section of the main menu Figure 9 10 9 9 2 The SWR line display is s...

Страница 21: ...e of the displayed plot by clicking the button with the name of the active plot and choosing a new one from the list Figure 9 17 Back button exit from the list of plots Figure 9 17 Selecting a plot from the list If you set the frequency range where the maximum propagation time exceeds 9999 99 ns the DTF plot button will be disabled More detailed information is in unit 9 3 of this Manual 9 10 5 To ...

Страница 22: ...type In Exclusive mode only the active plot is displayed In the Layer mode inactive plots are displayed in a semi transparent background under the active plot Switching the phase plot and the unwrapped phase plot with the Normal Unwrapped button Back button exit from the list of plots 9 11 Marker measurements On plots in addition to the DTF plot up to four markers can be set to display numerical m...

Страница 23: ... from the list Figure 9 20 Selecting the type of value displayed by the marker Table 3 Values displayed by markers Auto The values are displayed in the interpretation corresponding to the displayed plot Switching the plot automatically changes the type of interpretation Re Im Displaying the amplitude of the real and imaginary parts of the complex reflec tion coefficient LMag Phase Displaying magni...

Страница 24: ...and Phase C Ph G Admittance SWR VSWR B C 9 11 6 For the DTF plot turning on off and setting the marker is performed by the marker state but ton Off marker off Point the marker is set at a point on the plot at a user specified distance or time from the start of the countdown Peak maximum the marker will be set at the maximum point of the plot automatically In this case the previously entered time o...

Страница 25: ...e 9 12 User settings menu 9 12 1 Enter the Presets section of the main menu Figure 9 23 Figure 9 23 User settings menu 9 12 2 The device stores in memory 32 user settings on four pages Click the Empty button to save the settings If all buttons are occupied with user settings rewrite by clicking on the button with outdated or unnecessary settings Click the Save preset button to save the setting A n...

Страница 26: ...een keyboard Figure 9 25 Figure 9 25 Changing the name of the custom setting To save the setting with the default name leave the field empty 9 13 Saving measurement results The device has the ability to save the measurement results traces with the possibility of subsequent viewing and comparison with the results of current measurements 9 13 1 Enter the Traces section of the main menu of the device...

Страница 27: ...ng with saved traces Turning on viewing and comparison of the loaded trace with the results of current measurements is carried out in several ways Sequential switching of real plots and saved traces using the data source button S11 Trace S11 S21 Trace S21 see unit 9 10 Setting up plots of the same type with different data sources real plot and saved trace in the Layer view Figure 9 28 Figure 9 28 ...

Страница 28: ...etwork analyzer ARINST VNA PR1 28 Figure 9 29 Disable viewing of saved measurement results 9 13 5 The user can rename the saved measurement results The process is the same as for renaming user settings in unit 9 12 3 ...

Страница 29: ...numeri cal value can be enabled see unit 9 9 The Smith chart allows you to evaluate the circuit mismatch and the nature of the load purely active reactive inductive reactive capacitive or complex 10 2 Polar chart 10 2 1 The polar chart is designed to display the complex reflection coefficient in a two dimensional coordinate system Figure 10 2 The chart is similar to the Smith chart but its scale g...

Страница 30: ...m minus 180 to plus 180 degrees Figures 10 3 10 6 The plot can be represented as an unfolded phase plot In this case the measurement range is below minus 180 and above plus 180 degrees Figures 10 4 and 10 6 Figure 10 3 Phase plot in measurement mode S11 Figure 10 4 Plot of the unwrapped phase in S11 measurement mode Figure 10 5 Phase plot in measurement mode S21 ...

Страница 31: ... on the frequency on a linear scale figure 10 7 Vertical scale of the plot in units dimensionless value Figure 10 7 Linear plot of the magnitude mode S11 Figure 10 8 Linear plot of the magnitude mode S21 10 5 Plot of the magnitude modulus of the reflection coefficient on a logarithmic scale 10 5 1 The plot shows the dependence of the magnitude of the RC and TC on the frequency in loga rithmic scal...

Страница 32: ...plot shows the voltage standing wave ratio VSWR Figure 10 11 Figure 10 11 VSWR plot 10 7 Measuring the distance to fault 10 7 1 DTF distance to fault distance to damage This plot Figure 10 12 allows you to meas ure the distance to fault or heterogeneity of the cable in the communication lines Calculated as the in verse Fourier transform of the frequency array of reflection coefficients ...

Страница 33: ...on plot Figure 10 13 Figure 10 13 Plot of cable loss measurements 10 8 2 To take measurements you must configure the device as follows In the Controls plot management menu set the units of measurement and cable length in the Set tings menu see unit 9 10 If cable length is not important select the unit of measure decibel dB If the cable length is known measured using the DTF plot to display the los...

Страница 34: ...final and initial frequencies FSTOP FSTART N quantity of scan points С speed of light m s VF speed factor L cable length m 10 9 Group delay plot 10 9 The group delay is the propagation time of the signal through the analyzed circuit This signal delay will differ for different frequencies if the test device does not have a linear phase response PFC To determine the group delay of the signal phase i...

Страница 35: ...h the determination of the group delay TGR in the form of a negative derivative of the phase φ in degrees on the frequency f where TGR group delay Δφ phase increment in degrees defined as the phase difference φ2 and φ1 Δf frequency increment in hertz defined as the difference between f2 and f1 ...

Страница 36: ...rging is complete the CHARGE indicator 8 turns off The device is allowed to operate while the battery is charging provided that the power supply is capa ble of providing an output current of at least 1500 mA If the charger or USB port of the PC is not able to provide the required current for the device to operate and charge the battery the device will automatically lower the current consumption un...

Страница 37: ...4 11 3 6 The battery 11 is located on the board under the screen module 4 and secured with double sided tape Carefully disconnect the battery connector 12 11 from the PCB connector figure 11 2 Remove the old battery 11 and remove the old double sided tape that was used to attach it to the board Figure 11 2 Replacing the battery 11 3 7 Apply double sided tape and glue the new battery 11 securely to...

Страница 38: ... dropping can damage the device 11 5 2 When transported by air the device must be placed in a heated sealed compartment 11 5 3 During transportation the device must be protected from atmospheric precipitation and dust 11 6 Limit state criterion 11 6 1 The criterion for the limit state of the device is a feature or a set of features when which further operation of the device is not allowed restorat...

Страница 39: ...with a delay The device is operated at ex tremely low ambient tempera tures Operate the device at an ambient temperature from 0 to plus 40 С Dirty screen Clear the screen Lost the factory calibration of the screen Calibrate the device screen ac cording to unit 13 The display module of the device is faulty Contact the service center for repair 5 The test device is connected to the ports P1 and P2 a...

Страница 40: ...nd device calibra tions Only the Factory calibration remains in the device Erase presets Removing custom settings from the Presets section of the main menu Erase traces Removing the saved measurement results from the Traces section of the main menu Recalibrate Screen Calibration of the device screen Executed in cases where the screen takes too long or does not respond correctly to pressing Make su...

Страница 41: ...fects of the Goods caused by the influence of virus programs interference with the software or the use of third party software non original the defect is caused by force majeure for example earthquake fire lightning strike instability in the electrical network accidents deliberate or careless actions of the consumer or third parties mechanical damage cracks chips holes arising after the transfer o...

Страница 42: ...that expands the scope of the device We recommend that you regularly update the device firmware 1 Installing the boot loader and virtual port driver on your PC 1 1 Go to the official website of ARINST by entering the address www arinst net in the address bar of your browser Go to the DOWNLOAD section and click on the file Arinst Firmware Updater to update the firmware of vector circuit analyzers F...

Страница 43: ... instructions of the installer The Arinst Firmware Updater application and the virtual COM port driver will be installed The installer package contains all the necessary components for the correct operation of the application and the connected equipment If the installation of any components was interrupt ed by the user these components must be installed independently or restart the installer pack ...

Страница 44: ... Refresh button 2 6 After selecting the COM port connect the device by clicking the Apply button 2 7 After connection the ID and firmware version of the device will be determined The Check for updates button will become active Figure A2 3 Figure A2 3 The device is connected to the PC Click the Check for updates button If the current firmware version is lower than the actual one the application wil...

Страница 45: ...o update the device firmware manually click the Upgrade firmware button If the device was in application mode it will automatically restart during the firmware update The ap plication message will be displayed on the PC screen figure A2 5 Figure A2 5 Application message about the device switching to update mode 2 9 During the device firmware update a window will appear with the download progress F...

Страница 46: ...are the application will display the latest installed version of the device software Figure A2 7 Figure A2 7 Displaying the device firmware version To ensure that the latest firmware is installed click the Check for updates button A message about the latest firmware version will be displayed on the screen 3 Device status messages displayed during the update process 3 1 Standard firmware download w...

Страница 47: ...ware again Figure A3 2 Unsuccessful firmware download 3 3 If the update process was interrupted the device will start in update mode until the update pro cess is completed The device displays a message about the update mode in which the device is located Figure A3 3 Check the connection of the device to the PC and carry out the firmware update again Figure A3 3 The device is in update mode ...

Страница 48: ...irmware If the checksums do not converge a mismatch message is displayed on the screen Figure A3 4 After rebooting the de vice will be in the update error mode Check the connection of the device to the PC and carry out the firmware update again Figure A3 4 Unsuccessfully installed firmware Document version from 13 11 2020 ...

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