Anritsu 701012 User Manual
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Anritsu 701012 User Manual

Anritsu usb power sensor user guide
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MA24106A USB Power Sensor
User Guide
True-RMS, 50 MHz to 6 GHz
Anritsu Company
P/N: 10585-00014
490 Jarvis Drive
Revision: C
Morgan Hill, CA 95037-2809
Printed: December 2007
USA
Copyright 2007 Anritsu Company

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  • Page 1 MA24106A USB Power Sensor User Guide True-RMS, 50 MHz to 6 GHz Anritsu Company P/N: 10585-00014 490 Jarvis Drive Revision: C Morgan Hill, CA 95037-2809 Printed: December 2007 Copyright 2007 Anritsu Company...

  • Page 2: Limitation Of Warranty

    .NET are all registered trademarks of the Microsoft Corporation. NOTICE Anritsu Company has prepared this manual for use by Anritsu Company personnel and customers as a guide for the proper installation, operation and maintenance of Anritsu Company equipment and computer programs. The drawings, specifications, and information contained herein are the property of Anritsu Company, and any unauthorized use or disclosure of these drawings, specifications, and information is prohibited;...

  • Page 3: Software License Agreement

    (i.e. hard disk, CD-ROM, or other storage device), or installed/ loaded into any appropriate Anritsu product. All rights not expressly granted are reserved to ACUS. This Grant of License is not subject to transfer or assignment by Licensee.

  • Page 5: Table Of Contents

    Table of Contents Chapter 1—General Information Scope of Manual............1-1 Introduction .
  • Page 6 Table of Contents (Continued) Measurement Considerations ..........3-14 Time Varying Signals.

  • Page 7: Chapter 1 - General Information

    All Anritsu power sensors are assigned a unique seven digit serial number, such as “0701012”. The serial number is imprinted on a label that is affixed to the unit. When ordering parts or corresponding with Anritsu Customer Service, please use the correct serial number with reference to the specific instrument's model number (for example, model MA24106A power sensor, serial number: 0701012).

  • Page 8: Preparation For Storage/Shipment

    To provide maximum protection against damage in transit, the power sensor should be repackaged in the original shipping container. If this container is no longer available and the unit is being returned to Anritsu for repair, please advise Anritsu Customer Service; they will send a new shipping container free of charge. In the event neither of these two options is possible, instructions for packaging and shipment are given below: •...

  • Page 9: Chapter 2 - Installation

    This chapter provides information and instructions on operating the MA24106A power sensor. It contains the following: • Hardware and Software Requirements for the Anritsu Power Meter Application • Driver Installation procedure for properly installing the driver for the sensor 2-2 Hardware and Software Requirements Please make sure that the following minimum requirements are met for installing and using the software: •...
  • Page 10 3. Click Next in the following screen to begin the installation process. Figure 2-2. Anritsu Power Meter Installation 4. Browse for the installation folder, select the desired permissions, and then click Next. The default installation directory is: C:\Program Files\Anritsu\AnritsuPowerMeter Figure 2-3. Anritsu Power Meter Installation Installation...
  • Page 11 Installation 5. Select I Agree to the license agreement, and then click Next. Figure 2-4. License Agreement 6. Select Next to continue with the software installation. Figure 2-5. Confirm Installation MA24106A UG Driver Installation...
  • Page 12 Driver Installation The software will then install to the selected location. Figure 2-6. Installing Anritsu Power Meter Application 7. When the installation completes, click Close. Figure 2-7. Application Installation Complete Installation MA24106A UG...
  • Page 13 Installation 8. Connect the MA24106A power sensor to the USB port of the PC with the supplied USB cable. The status LED will light green indicating that the sensor is turned ON. 9. When the Found New Hardware Wizard installation screen appears, select No, not this time to search for software, and then click Next.
  • Page 14 Driver Installation 11. Select Don’t search. I will choose the driver to install, and then click Next. Figure 2-10. Found New Hardware Wizard 12. Select the hardware type Computer, and then click Next. Figure 2-11. Found New Hardware Wizard Installation MA24106A UG...
  • Page 15 14. Browse to the location on your hard drive where you installed the program. If the default settings were chosen during the application installation, click Browse..., as shown below, and then select: C:\Program Files\Anritsu\AnritsuPowerMeter\AnritsuMA24106A.inf 15. Click OK. Figure 2-13. Install From Disk...
  • Page 16 Driver Installation 16. Select Anritsu MA24106A from the list, and then click Next as shown below. Figure 2-14. Found New Hardware Wizard 17. The Hardware Installation Warning dialog will appear as shown in Figure 2-15. Click Continue Anyway. Figure 2-15. Hardware Installation...
  • Page 17 Figure 2-16. Found New Hardware Wizard 19. The MA24106A is now ready for use. Launch the Anritsu Power Meter application from the new desktop icon or from the Start | Programs menu. Refer to Chapter 3 for information about using the Anritsu Power Meter application.

  • Page 19: Chapter 3 - Using The Power Sensor

    Chapter 3 — Using the Power Sensor 3-1 Introduction This chapter provides information on using the Anritsu Power Meter application with the MA24106A USB power sensor. It provides a description of the Graphical User Interface, various settings of the application, basic procedures for Making Measurements, as well as information about Uncertainty of a Measurement.

  • Page 20: Buttons

    Buttons 3-3 Buttons There are nine buttons available on the user interface to perform the most common tasks as described below: • Zero: Performs the Zero operation. Removes system noise. • Hold/Run: Holds the last reading. Run releases the hold. •...

  • Page 21: Display Window

    Using the Power Sensor 3-5 Display Window The display window contains the following information (see Figure 3-3 and Figure 3-4): • Measured Power • Relative Power • Units of Power • Fixed Offset • Offset Table Figure 3-3. Display Window (Relative Mode with Fixed Offset On) Figure 3-4.

  • Page 22: Menu Bar

    Menu Bar 3-7 Menu Bar The Menu Bar contains the following menus: File Menu The File menu contains the Exit command, which terminates the application. Figure 3-6. File Menu Tools Menu The Tools menu contains: • Reset Averages: Restarts the averaging •...

  • Page 23: Data Logging Menu

    Using the Power Sensor Data Logging Menu The Data Logging menu provides choices between Data Logging On or Data Logging Off. Figure 3-8. DataLogging Menu • Data Logging On: Data is stored as comma separated value (.csv) files that can be directly opened in Microsoft Excel.

  • Page 24: Power Graph

    Menu Bar Using the Power Sensor • Data Logging Interval: Sets full speed data logging (approximately 10 measurements per second) or fixed interval data logging (user defined logging interval). Figure 3-10. Data Logging Power Graph The Power Graph feature provides the ability to plot measured power with respect to time. This feature can be used for drift testing, tuning circuits, and for monitoring circuit behaviors to external stimuli, etc.
  • Page 25 Using the Power Sensor Clicking Start in the Power Graph menu opens the power versus time graph (Figure 3-12). Figure 3-12. Power Graph Screen The default settings of the graph are as follows: • Time, X-axis: 30 minutes • Power, Y-axis: +20 dBm to –60 dBm Clicking Setup opens the Graph Setup dialog (below) where the scales of time and power axes can be changed.

  • Page 26: Offset Table

    Menu Bar Offset Table The Offset Table feature provides the ability to apply corrections to measurements in cases of RF devices being used between the sensor and DUT. Offset Table is different from Fixed Offset as it provides the ability to enter different offset values at different frequencies for an RF device.
  • Page 27 Using the Power Sensor 5. Save the response of the device by clicking Save from the Offset Entry Screen and save as a file in the directory of your choice (see Figure 3-15). Any number of device responses can be stored. The files are stored as comma separated value files (.csv).

  • Page 28: Session Restore

    Figure 3-17. Offset Table Menu (Offset Table Off Status) Session Restore The Anritsu Power Meter application retains the set up information of a session, even if the USB power sensor becomes disconnected from the PC. When the USB power sensor is reconnected, the changed properties (if different from default) will be highlighted for five seconds as a reminder of the changed set up.

  • Page 29: Making Measurements

    3-8 Making Measurements This section presents common procedures for using the MA24106A power sensor. These procedures refer to the MA24106A buttons and menus that were previously described. You should be familiar with the Anritsu Power Meter PC application before attempting these procedures.

  • Page 30: Zeroing The Sensor

    This section presents information on how to get the fastest readings from the MA24106A power sensor when using the Anritsu Power Meter application or operating under remote control (refer to Chapter 4 for specific remote programming command descriptions). Measurement speed depends greatly on the type of measurement, the power level, and stability of the signal.
  • Page 31 Using the Power Sensor Table 3-1, describes the number of averages needed to attain a certain noise level for a particular power level measurement with the Low Aperture Time mode setting. Table 3-1. MA24106A Averaging Table (Low Aperture Time, Default Mode) Input Power Input Power (dBm)

  • Page 32: Error States

    This section details some of the error messages that may appear on the application screen. In most cases, the error condition can be easily corrected. The status LED will light yellow when an error state occurs. If not, note the error message and contact an Anritsu Service Center. Table 3-3.

  • Page 33: High Crest Factor Signals (Peak To Average Ratio)

    Using the Power Sensor High Crest Factor Signals (peak to average ratio) High crest factor signals, such as CDMA/WCDMA, may have crest factors as high as 10 dB. To ensure the most accurate power measurement, the statistically-low peak signals should not exceed +30 dBm. For example, if a signal has an expected crest factor of 10 dB, then the highest average power measured should not exceed +20 dBm.

  • Page 34: Settling Time

    Measurement Considerations Using the Power Sensor For example, a CW tone at –30 dBm is to be measured to 0.01 dB resolution. Using the table in the sensor manual, the required number of averages is 38 averages using High Aperture Time mode (the same measurement would require more than 256 averages in Low Aperture Time mode).

  • Page 35: Uncertainty Of A Measurement

    • Sensor Calibration Factor Uncertainty: Sensor Calibration Factor Uncertainty is defined as the accuracy of the sensor calibrated at a standard calibration condition. Anritsu follows the industry standard condition of calibration at a reference power of 0 dBm (1 mW) and an ambient temperature of 25 °C.

  • Page 36: Uncertainty Example

    Uncertainty of a Measurement Uncertainty Example An example of a measurement uncertainty calculation (for Low Aperture Time mode) is detailed for the MA24106A in Table 3-4 below. The MA24106A is used to measure the power of a 3 GHz, +12.0 dBm and –35 dBm CW signal from a signal source with 1.5:1 VSWR.

  • Page 37: Chapter 4 - Remote Operation

    Chapter 4 — Remote Operation 4-1 Introduction Once connected to a PC using a USB cable, the MA24106A shows up as an RS-232 Serial COM port on the PC. You can check the COM port number from the Tools drop-down menu or by using the Windows control panel. The COM port number and following settings are needed in order to control the sensor remotely: •...

  • Page 38: Remote Operation Command Details

    Remarks: This command should be sent before exiting the user application. IDN? Description: Gets identification information from the sensor. Syntax: IDN? + LF Return Value: ANRITSU, Model #, Serial #, Module Serial #, firmware version PWR? Description: Gets the power reading from the power sensor. Syntax: PWR? + LF...
  • Page 39 Remote Operation FREQ? Description: Gets the current cal factor frequency value from the sensor. Syntax: FREQ? + LF Return Value: Current cal factor frequency in GHz FREQ Description: Sets the current cal factor frequency value for the sensor. Syntax: FREQ fghz + LF Return Value: OK or ERR Remarks: “fghz”...
  • Page 40 Remote Operation Command Details Description: Sets the high aperture time mode. Syntax: HAT + LF Return Value: OK or ERR Remarks: This command will put the sensor in high aperture time mode. In this mode, the A to D converter integration time is about 160 milliseconds. Description: Sets the low aperture time mode.

  • Page 41: Chapter 5 - Sensor Operational Tests

    Note: Calibration and verification of high accuracy Power sensors requires substantial investment in both skill and equipment. For calibration, calibration verification, and to maintain the factory specifications of your power sensor, please send sensors to qualified Anritsu Customer Service Centers. Refer to the following sections for required equipment and test procedures: •...

  • Page 42: Vswr Pretest

    Table 5-2, then the sensor is damaged and it is not necessary to perform further testing. Note: There are no user-serviceable parts inside the power sensors. Contact your local Anritsu Service Center and return defective sensors with a detailed description of the observed problem.

  • Page 43: Calibration Factor Test

    Sensor Operational Tests 5-4 Calibration Factor Test In this test the calibration factors of the MA24106A are compared against another sensor (referred to in this procedure as the “reference sensor”) with known calibration factor uncertainties. This reference sensor should be calibrated by a reputable standards laboratory which has low published measurement uncertainty. To perform the comparison, both sensors are used to measure the output power of a synthesizer with a high quality attenuator, such as the 41KC-6, on the output.
  • Page 44 MA24106A measurement, and record the result in the appropriate space in Table 5-3. 11. For each frequency, compare the power difference to the maximum allowed difference specified in Table 5-3. If the difference is higher than the maximum allowed difference, contact Anritsu customer service. Table 5-3.

  • Page 45: Linearity Test

    Sensor Operational Tests 5-5 Linearity Test The linearity correction of the MA24106A is compared to a thermal power sensor, which has very good inherent linearity over a power range of about –20 to +10 dBm. For this reason, the MA24106A will be compared to the thermal sensor in two ranges, keeping the power levels to the thermal sensor in the range of –17 dBm to +5 dBm, while the power to the MA24106A will vary from about –26 dBm to about +14 dBm.
  • Page 46 Linearity Test n. Increase averaging on the MA24106A by clicking the Averages button, enter “16” and then click Apply. Figure 5-2. Linearity Test Setup 2. Apply the appropriate Cal factor to the reference sensor per the manufacturer’s procedure. 3. Apply the appropriate Cal factor to the MA24106A as follows: Click the Frequency button on the Power Meter application, and then enter the frequency of the measurement in GHz.
  • Page 47 Sensor Operational Tests 7. Set up the test for the second 20 dB range as follows: a. Remove the 10 dB attenuator from in between the reference sensor and splitter and connect the reference sensor directly to the splitter. b. Remove the MA24106A from the splitter and connect the 10 dB attenuator between the splitter and the MA24106A power sensor (see Figure 5-3).
  • Page 48 Delta in row 13. i. The Delta result should be less than 0.3 dB. If it is larger, contact Anritsu customer service. 10. Repeat the entire measurement and calculations with synthesizer frequency settings of 2 GHz, 4 GHz, and 6 GHz.
  • Page 49 Sensor Operational Tests Table 5-5. Measurement Results (2 GHz) Synthesizer Attenuation Power Level in Reference Setting (dBm) (dB) adjust per step 7e –5 –10 Table 5-6. Measurement Results (4 GHz) Synthesizer Attenuation Power Level in Reference Setting (dBm) (dB) adjust per step 7e –5 –10...
  • Page 50 Linearity Test Table 5-7. Measurement Results (6 GHz) Synthesizer Attenuation Power Level in Reference Setting (dBm) (dB) adjust per step 7e –5 –10 5-10 = (A6–A5) = (A+B) Reference Corrected Power Reference Power Measurement Correction Measurement (dBm) (dB) (dB) Sensor Operational Tests = (C–D) Attenuation MA24106A...

  • Page 51: Appendix A - Connector Care And Handling

    Also, such compliance will ensure that Power Sensor failures are not due to misuse or abuse – two failure modes not covered under the Anritsu warranty. Beware of destructive pin depth mating connectors Destructive pin depth of mating connectors is the major cause of failure in the field.

  • Page 52: Cleaning Connectors

    Avoid over torquing connectors Over torquing connectors is destructive; it may damage the connector center pin. Always use a connector torque wrench when tightening connectors. Never use pliers to tighten connectors. Avoid mechanical shock Precision connectors are designed to withstand years of normal bench handling. However, do not drop or otherwise treat them roughly.

  • Page 53: Appendix B - Sample Visual Basic Code

    Appendix B — Sample Visual Basic Code B-1 Demo Application The MA24106A CD contains a demo application that allows you to interface with the power sensor using the remote programming protocol. The sample code is written in Microsoft® Visual Basic® 6.0 and is given at the end of this appendix.
  • Page 54 Using the Demo Application ************************************************************************ // This sample program shows how to control Anritsu MA24106A USB power sensor using //Microsoft Visual basic 6.0 Option Explicit Public gstrInputBuffer As String 'Event handler for InitializeComPort button Private Sub btnInitializeComPort_Click() Call SetCommPort(Val(Trim(txtCOMPORTNo.Text))) End Sub...
  • Page 55 Sample Visual Basic Code 'Event handler for MSComm1 event Private Sub MSComm1_OnComm() 'Get data from Input buffer gstrInputBuffer = MSComm1.Input 'Display received result on the Received text box txtReceived.Text = gstrInputBuffer End Sub 'Event handler for GetFreq button Private Sub btnGetFreq_Click() txtCommand.Text = "FREQ?"...
  • Page 56 Using the Demo Application 'Delay routine Public Sub Delay(ByVal Seconds As Single) Dim fStartTimer As Single Dim fFinish As Single fStartTimer = Timer DoEvents fFinish = Timer If Abs(fFinish - fStartTimer) > Seconds Then Exit Do End If Loop End Sub ************************************************************************ Sample Visual Basic Code MA24106A UG...

  • Page 57: Appendix C - Serial Port Compatibility

    Windows may map your serial port to a port number greater than 16, such as COM17 or COM29 depending on which USB port that is being used. If you connect your power sensor and the Anritsu Power Meter application displays No Sensor, a port number above COM16 may be assigned. To correct this problem, you will need to follow one of the two steps outlined below.

  • Page 58: Method 1-Download Updated Software

    C-1 Method 1–Download Updated Software The preferred method for resolving serial port compatibility issues is to download software updates for your product from www.us.anritsu.com. C-2 Method 2–Trying a Different USB Port 1. Disconnect the USB end of your power sensor from your computer (or USB hub).
  • Page 59 Serial Port Compatibility Method 3–Remapping a Serial Port 2. Select the Hardware tab and click the Device Manager button to open the Device Manager. Figure C-2. System Properties MA24106A UG...
  • Page 60 Method 3–Remapping a Serial Port 3. Click the + box next to Ports (COM & LPT) to expand the installed ports list. Figure C-3. Device Manager 4. Select the port that is assigned to the power sensor. Disconnect and reconnect the sensor and notice the new COM port number that appears.
  • Page 61 Serial Port Compatibility 7. Click the Advanced button to show the advanced property settings for the port. Figure C-4. Advanced Settings for COM Port 8. Select a COM Port Number in the range of 1 through 16. If possible, select a port which is NOT marked as “in use”...
  • Page 62 Method 3–Remapping a Serial Port Serial Port Compatibility 9. You will get an alert when you close the window telling you that the COM port number may be in use by another device and asking if you want to continue. Click Yes to continue. Figure C-5.

  • Page 63: Appendix D-Upgrading The Firmware

    The Anritsu Power Meter application provides the necessary software to upgrade the MA24106A power sensor’s firmware. The current sensor firmware can be determined from the Help | About menu in the Anritsu Power Meter application. To upgrade the firmware, proceed as follows: 1.
  • Page 64 Upgrading the Firmware 4. Once the upgrade driver has been installed, click OK on the dialog below. Figure D-3. Firmware Upgrade Dialog 5. Select the power sensor that you intend to upgrade from the drop-down list box. Figure D-4. Firmware Upgrade Application Upgrading the Firmware MA24106A UG...
  • Page 65 Upgrading the Firmware Upgrading the Firmware 6. Click Load Hex File and select the HEX file from the directory in which it was saved. Figure D-5. Open File Dialog Warning: Do Not disconnect the MA24106A power sensor from the USB port or interrupt the firmware write sequence as this will cause an unrecoverable programming error.
  • Page 66 8. Disconnect and reconnect the USB cable from the power sensor, and then click OK to complete the firmware upgrade procedure. Figure D-7. 9. Launch the Anritsu Power Meter application to begin using the upgraded sensor. Upgrading the Firmware MA24106A UG...

  • Page 67: Data Logging

    Symbols .Net Framework 2.0 ..... . . 2-1 ADC_TEMP_OVERRNGE ....3-14 aperture time .
  • Page 68 M to S MA24106A contents ......1-1 default settings ......3-1 description .
  • Page 69 table averaging ......3-13 error messages ..... . . 3-14 offset .

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