Calibration Manual - ni-microwavecomponents.com
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1. POWER METER z POWER QuickSyn SENSOR SYNTHESIZER oHoooo0 0 m POWER SUPPLY PC 1 Connect the PC to the USB connector of the synthesizer 2 Ensure that the power supply is turned off and then connect the power supply to the synthesizer WARNING Voltages less than 12 V at the synthesizer connector may result in malfunction and voltages in excess of 15 V may damage the synthesizer 3 Attach the power sensor to the power meter 4 Do not connect the power sensor to the synthesizer s RF OUT until prompted to do so by the QuickSyn Soft Front Panel for Calibration 5 Launch the QuickSyn Soft Front Panel for Calibration software refer to instructions in Section Step 2 1 if necessary QuickSyn Frequency Synthesizer Calibration 19 of 30 Calibration Software User s Manual 20 of 30 6 Select the Update button on the Power Cal tab A dialog box similar to the one shown in Figure 14 will appear to prompt the user to connect the power sensor to the synthesizer s RF output connector Figure 14 Example Connect Power Sensor Dialog Box Please connect the power sensor directly to the QuickSyn module RF output connector Click OK to continue or Cancel to cancel the path calibration 7 Connect the power sensor from the power meter to the synthesizer s RF OUT and then select OK The Power vs Frequency graph see Figure 15 will display the fixed output power as it is measured across the2. RETURN POLICY The software to which this National Instruments license applies is QuickSyn Cal SFP V1 0 22 laccept the above 2 License Agreement s ol do not accept all these License Agreements Cera new Coosa 6 Carefully read through the Software License Agreement see Figure 3 e Ifyou agree to the terms of the software license agreement select I accept the License Agreement and select Next to continue e Ifyou do not agree you will not be able to install the software A screen similar to the one shown in Figure 4 will appear to show the progress of files being installed Figure 4 Example of Files Being Copied QuickSyn Cal SFP V1 0 2 Overall Progress 73 Complete cack oe CoE 6 of 30 QuickSyn Frequency Synthesizer Calibration Calibration SoftwareUser s Manual 7 Select Finish as shown in Figure 5 to complete the Soft Front Panel installation Reboot the computer if prompted to do so Figure 5 Example of Completing Soft Front Panel Installation Wizard r K QuickSyn Cal SFP VLOS Installation Complete lt Back Next gt gt Finish QuickSyn Frequency Synthesizer Calibration 7 of 30 Calibration Software User s Manual Step 2 Review Software Front Panels Step 2 1 Launch QuickSyn Soft Front Panel for Calibration 1 Use the shortcut icon that was placed on the computer s desktop during installation to launch the QuickSyn Soft Front Pa
3. be installed before installing the QuickSyn Soft Front Panel for Calibration The QuickSyn Soft Front Panel for Calibration will run on a PC using Windows NOTE i i XP Windows Vista and Windows 7 The example shown here was performed on a Windows 7 PC 1 Download the latest available QuickSyn Soft Front Panel for Calibration from the NI Microwave Components website Software is available at ni microwavecomponents com 2 Start the installation process by selecting Start gt Run gt Browse navigate to the setup exe file and select Open to start the installation wizard An installer initialization screen similar to the one shown in Figure is displayed and when finished will provide a dialog box as shown in Figure 2 Ik is strongly recommended that you exit all programs before running this installer Applications that run in the background such as virus scanning z utilities might cause the installer to take longer than average to complete Please wait while the installer initializes 4 of 30 QuickSyn Frequency Synthesizer Calibration Calibration SoftwareUser s Manual Figure 2 Example of Selecting Destination Directory for Executables UI QuickSyn Cal SFP V1 0 22 Destination Directory Select the primary installation directory All software will be installed in the following locations To install software into a differant locations click the Browse button and select another directory Directory for QuickSyn Ca
4. before initiating To enter a value highlight the number in the entry box and enter the desired value or use the up down arrow on the left side of the box After the value is entered and the Start Ref Cal button pressed a Delay dialog box will appear as shown in Figure 8 and will count down the delay To abort the delay select Bypass on the Delay dialog box and the calibration will proceed Ref Voltage This read only field shows the reference voltage as the calibration progresses Step This read only field shows the voltage step of the reference DAC voltage as the calibration progresses Current Ref Voltage This read only field displays the current reference DAC voltage as the calibration progresses Frequency Hz This read only field shows the frequency that is read back from the frequency counter as the calibration progresses QuickSyn Frequency Synthesizer Calibration Calibration Software User s Manual Step 3 Perform Power Calibration Step 3 1 Confirm Equipment Ensure that the items listed in Table are present before starting the power calibration process Table 1 Power Calibration Requirements Unit to be Calibrated e FSW 0010 or FSW 0020 QuickSyn synthesizer Equipment e Agilent E4418B power meter or exact SCPI command equivalent e Agilent E4413A power sensor or equivalent e Aeroflex 26AH 06 attenuator or equivalent e 12 volt power supply Software e QuickSyn Soft Front Panel for Calibra
5. button will illuminate Store in Flash This button when pressed stores the calibration data into the permanent memory of the synthesizer The synthesizer will recognize the data as the default calibration When the step is complete the indicator to the left of the button will illuminate Note that this step is not automatic and must be executed manually Abort This button when pressed halts action associated with a step in process A step may be aborted at anytime Check Max 15 The Check Max selection bar allows the user to select among three options for checking the minimum and maximum values of the power sweep Check Min 25 and Max 15 Check Min 25 and Check Max 15 e When Check MIN 25 and Max 15 is selected both the minimum and maximum achievable power levels will be displayed on the graph e When Check MIN 25 is selected only the mimimum achievable power level will be displayed on the graph e When Check Max 15 is selected only the maximum achievalbe power level will be displayed on the graph QuickSyn Frequency Synthesizer Calibration 11 of 30 Calibration Software User s Manual 12 of 30 Load Cal File This button when pressed launches a dialog box similar to the one shown in Figure 9 and allows the user to retrieve a previously created calibration file instead of executing the Start Cal step When the file is loaded the indicator to the left of the button will illuminate
6. in Flash step which will store the calibration data into the synthesizer s memory 12 Review the calibration data to ensure its validity and then press the Store in Flash button CAUTION The Store in Flash function will overwrite previous calibration data that may be stored in permanent memory therefore verify calibration data before executing the Store in Flash step When this step is complete the indicator next to the Store in Flash button will illuminate QuickSyn Frequency Synthesizer Calibration 27 of 30 Calibration Software User s Manual Step 4 Perform Reference Calibration Step 4 1 Confirm Equipment Ensure that the items listed in Table 2 are present before starting the reference calibration process Table 2 Reference Calibration Requirements Unit to be Calibrated e FSW 0010 or FSW 0020 QuickSyn synthesizer Equipment e 10 MHz frequency standard e Frequency Counter one listed here or an exact SCPI command equivalent e Pendulum CNT 90 e Anritsu MF2412B e Phase Matrix 346A e 12 volt power supply Software e QuickSyn Soft Front Panel for Calibration Computer e PC with a Windows XP or higher operating system and GPIB enabled 28 of 30 QuickSyn Frequency Synthesizer Calibration Calibration Software User s Manual Step 4 2 Perform Reference Calibration There are two calibration steps located on the Ref Cal tab of the QuickSyn Soft Front Panel for Calibration Start Ref Cal and Wr
7. 7 NATIONAL INSTRUMENTS QuickSyn MICROWAVE FREQUENCY SYNTHESIZER Path Cal File Calibration GPIBO 13 INSTR El fruhiniosct dite ff Calibration Mode C S aoon ff Warm Up Time min Calibration Steps Options 1 mane Swe oone ekma vf mo E _enecaou j Calibration Mode Q B aitoon fis WormUp Tine min Calibration Steps Options 1 bere Check Max 15 ovf Calibration Software User s Manual DOC NO 5580515 01 REV B ECN 001540 National Instruments 4600 Patrick Henry Drive Santa Clara CA 95054 408 610 6810 ni microwavecomponents com Notices 2014 National Instruments No part of this manual may be copied duplicated or reproduced in any form or by any means including electronic storage and retrieval or translation into a foreign language without prior agreement and written consent from National Instruments as governed by United States and international copyright laws National Instruments 4600 Patrick Henry Drive Santa Clara CA 95054 Software Copyright Original National Instruments software may be distributed without consent from National Instruments only if all software and associated files are included in the distribution and remain unmodified Warranty National Instruments warrants this product to be free from defects in ma terial and workmanship for one year from the date of delivery Damage due to accident abuse or improper s
8. Figure 9 Example Load Cal File Dialog Box Choose or Enter Path of File Save in Test Data aea B 0010_0000010106_072711_0917 txt 4 0010_0000010106_081711_1230 txt My Recent _ PathInsLoss txt Documents Desktop My Documents 58 My Network File name foo 0_0000010106_081711_1230 txt v s Save as type Calibration Data Files txt v Fixed Power Option This selection button is used to select fixed power output rather than variable power output To choose fixed power select the checkbox and enter a value in the entry box to the right of the checkbox To enter a value highlight the number in the entry box and enter a value or use the up down arrow on the left side of the box Power Control The Power Control bar allows the user to select among three different verification options Power Control Fixed Power User Defined e When Power Control is selected verification of power will occur at 5 dB intervals across the entire specified power range of the synthesizer e When Fixed Power is selected control of power is disabled and the power is set to the specified fixed power This choice can only be used with previously written calibration data obtained from selecting the Fixed Power Option QuickSyn Frequency Synthesizer Calibration Calibration SoftwareUser s Manual e When User Defined is selected and the Define button pressed a dialog box similar to the one shown in Figure 10 a
9. e Figure 18 Calibration Path Loss Measurement Calibration File Name 4 I I i I I 1 I I 100 1000 2000 3000 4000 5000 6 6000 7000 8000 9000 10400 Frequency MHz Save Data to File 22 of 30 QuickSyn Frequency Synthesizer Calibration Calibration Software User s Manual Step 3 3 Perform Power Calibration There are five calibration steps located on the Power Cal tab of the QuickSyn Soft Front Panel for Calibration Min Max Power Sweep Start Cal Write Cal to UUT Verify Cal and Store in Flash Each step has a corresponding button on the panel see Section Step 2 2 If the equipment is setup from the previous step Step 3 2 Create Path Calibration File proceed to instruction step five below and refer to Figure 19 Figure 19 Equipment Setup for Power Calibration m Jo 6 dB PAD 20 00 zoo dBm E a CALIBRATION PATH Se QuickSyn SYNTHESIZER POWER METER POWER SENSOR GPIB CONNECTION MEE fe O QO POWER SUPPLY PC 1 Connect the PC to the USB connector of the synthesizer 2 Ensure the power supply is truned off and then connect the power supply to the synthesizer WARNING Voltages less than 12 V at the synthesizer connector may result in malfunction and voltages in excess of 15 V may damage the synthesizer QuickSyn Frequency Synthesizer Calibration 23 of 30 Calibration Software User s Manual 3 Attach the power sensor to th
10. e adjusted multiple times until the frequency is within 20 Hz 10 GHz During this step the calibration value will be stored in volatile memory and will not be retained if the synthesizer s power is cycled or turned off and on The indicator to the right of the Start Ref Cal button will illuminate when the step is finished Write Ref Cal to UUT Press the Write Ref Cal to UUT to store the reference calibration value to the synthesizer s permanent memory 9 Power cycle 1 e turn off and on the synthesizer to load the new value QuickSyn Frequency Synthesizer Calibration
11. e power meter 4 Connect the calibration path input to the Synthesizer s RF OUT and the power sensor to the calibration path output 5 Connect the power meter to the GPIB capable PC with a GPIB cable 6 From the Power Cal tab of QuickSyn Soft Front Panel for Calibration select the GPIB address of the connected power meter Max Min Pwr Sweep The option of imposing a time delay for the synthesizer to warm up can be set by entering a value in the Warm Up Time entry box Also the option of an automatic execution of calibration steps can be chosen by pressing the Auto On button The sequence of calibration steps will proceed automatically through to the Verify Cal step when the Max Min Pwr Sweep button is pressed with the Auto On is set Note however that the Store in Flash step is not automatic and must be executed manually The steps described from this point forward are based on a manual power calibration i e without Auto On NOTE Calibration frequencies and power levels are set automatically based on the QuickSyn synthesizer model FSW 0010 or FSW 0020 7 Choose a minimum maximum power sweep parameter by selecting the Check Max 15 selection bar 8 Press the Max Min Pwr Sweep button to execute the power sweep 24 of 30 QuickSyn Frequency Synthesizer Calibration Calibration Software User s Manual As the RF power is measured results will be displayed on the Power vs Frequency graph see Figure 20 The po
12. enized crystal oscillator OCXO will be tuned to the synthesizer s specification for a 10 MHz reference standard Frequency Counter The Frequency Counter selection box allows the user to specify the GPIB address to which an external frequency counter is connected Model The Model selection box enables the user to identify the frequency counter connected to the synthesizer The user may choose from three models an Anritsu MF2412B a Pendulum CNT 90 or a Phase Matrix 346A Figure 11 Reference Calibration Panel USBComPort Date 3 5 12 QuickSyn Frequency Synthesizer Calibration 15 of 30 Calibration Software User s Manual 16 of 30 Start Ref Cal This button when pressed initiates the calibration of the synthesizer s OCXO internal reference and is the first of the two calibration steps to calibrate the internal reference When this step is complete the indicator to the left of the button will illuminate Write Ref Cal to UUT This button when pressed stores the reference calibration value into the synthesizer s permanent memory and will overwrite the previous value In addition the date of calibration will be updated When the step is complete the indicator to the left of the button will illuminate Abort This button when pressed halts action associated with a step in process A step may be aborted at anytime Ref Warm Up Time This entry box is used to specify the period of time the calibration process will delay
13. frequency range of the synthesizer at 10 dBm Figure 15 Direct Power Measurement Calibration File Name Save Data to File QuickSyn Frequency Synthesizer Calibration Calibration Software User s Manual When the direct power measurement is complete a dialog box similar to the one shown in Figure 16 will appear to prompt the user to insert the 6 dB pad or calibration path Figure 16 Example Connect Calibration Path Dialog Box Please connect the 6dB pad or calibration path input to the QuickSyn module RF output connector and connect the power sensor to the output of the 6db pad or the calibration path output Click OK to continue or Cancel to cancel the path calibration Cancel 8 Refer to Figure 17 and connect the calibration path input to the synthesizer s RF OUT and the power sensor to the calibration path s output Press OK to proceed Figure 17 Equipment Setup for Calibration Path Loss Measurement a T 6 dB PAD 20 00 a ooo dpm E 2 CALIBRATION PATH D me QuickSyn SYNTHESIZER POWER METER POWER SENSOR POWER SUPPLY PC QuickSyn Frequency Synthesizer Calibration 21 of 30 Calibration Software User s Manual The Power vs Frequency graph see Figure 18 will display the calibration path loss measurement at each frequency When the calibration path loss measurement is complete across all of the frequencies the loss 1s computed and stored in the Path Calibration Fil
14. highlight the number in the entry box and enter a value or use the up down arrow on the left side of the box After a value is entered and the Max Min Pwr Sweep button pressed a Delay dialog box will appear as shown in Figure 8 and will count down the time delay To abort the delay select Bypass on the Delay dialog box and the calibration will proceed Figure 8 Delay Dialog Box Max Min Pwr Sweep This button when pressed executes a power sweep which is the first step in a sequence of steps to calibrate the synthesizer s output power When this step is complete the indicator to the left of the button will illuminate QuickSyn Frequency Synthesizer Calibration Calibration Software User s Manual Start Cal This button when pressed starts the power calibration step When the step is complete the indicator to the left of the button will illuminate Write Cal to UUT This button when pressed stores calibration data when it is available into the synthesizer s volatile memory The current calibration data stored in the synthesizer s permanent memory will not be overwritten When the step is complete the indicator to the left of the button will illuminate UUT stands for unit under test Verify Cal This button when pressed measures each calibrated frequency and displays the measured power in the Power vs Frequency graph Power is verified every 5 dB When the step is complete the indicator to the left of the
15. ignal level is not covered by the warranty Removal defacement or alteration of any serial or inspection label marking or seal may void the warranty National Instruments will repair or replace at its option any components of this product which prove to be defective during the war ranty period provided the entire unit is returned to National Instruments or an authorized service facility In warranty units will be returned freight prepaid out of warranty units will be returned freight COLLECT No warranty other than the above is expressed or implied Safety Notices CAUTION A CAUTION notice denotes a hazard It calls attention to an operating procedure practice or the like that if not cor rectly performed or adhered to could result in damage to the product or loss of important data Do not proceed beyond a CAUTION notice until the indicated conditions are fully understood and met WARNING A WARNING notice defines a hazard It calls attention to an operating procedure or practice that if not correctly followed or adhered to could result in either personal inju ry or death Do not proceed beyond a WARNING notice until the indicated conditions are fully understood and met Calibration Software User s Manual INSTRUMENTS i NATIONAL Introducing Calibration Software for the QuickSyn Frequency Synthesizer You can calibrate the QuickSyn Frequency Synthesizer with the QuickSyn Soft Front Pa
16. ite Ref Cal to UUT Each step has a corresponding button on the panel see Section Step 2 2 Refer to Figure 23 to setup the equipment for the reference calibration Figure 23 Equipment Setup for Reference Calibration 10 MHZ QuickSyn SYNTHESIZER 20000000000 ay o 8 eo aa FREQUENCY COUNTER Z A oo o 00O POWER SUPPLY PC 1 Connect the PC to the USB connector of the synthesizer 2 Ensure that the power supply is turned off then connect the power supply to the synthesizer Voltages less than 12 V at the synthesizer connector may result in malfunction WARNING f and voltages in excess of 15 V may damage the synthesizer QuickSyn Frequency Synthesizer Calibration 29 of 30 Calibration Software User s Manual 30 of 30 3 Connect the frequency counter reference input to the 10 MHz reference standard 4 Connect the synthesizer s RF OUT to the frequency counter s RF input 5 Connect the frequency counter to the GPIB capable PC with a GPIB cable as shown in Figure 23 6 Launch the QuickSyn Soft Front Panel for Calibration software refer to instructions in Section Step 2 1 if necessary 7 From the Ref Cal tab select the GPIB address of the connected frequency counter and identify the model in the Model selection box Start Ref Cal 8 Press the Start Ref Cal button to start the reference calibration process The tuning voltage of the OCXO will b
17. l SFP 1 0 22 C Program Files amp c 6 Phase MatrncQuickSyn SFP Verl 0 2 Quick Syn Cal Directory for National Instruments products Browse 4 Enter the destination directory for the Soft Front Panel executables or browse to a destination directory by selecting the Browse button See Figure 2 5 Once the file path has been entered select Next to continue to the Software License Agreement QuickSyn Frequency Synthesizer Calibration 5 of 30 Calibration Software User s Manual Figure 3 Example of Software License Agreement CL QuickSyn Cal SFP V1 0 2 License Agreement You must accept the licanses displayed below to proceed NATIONAL INSTRUMENTS SOFTWARE LICENSE AGREEMENT INSTALLATION NOTICE THIS IS A CONTRACT BEFORE YOU DOWNLOAD THE SOFTWARE AND OR COMPLETE THE INSTALLATION PROCESS CAREFULLY READ THIS AGREEMENT BY DOWNLOADING THE SOFTWARE AND OR CLICKING THE APPLICABLE BUTTON TO COMPLETE THE INSTALLATION PROCESS YOU CONSENT TO THE TERMS OF THIS AGREEMENT AND YOU AGREE ITO BE BOUND BY THIS AGREEMENT IF YOU DO NOT WISH TO BECOME A PARTY TO THIS AGREEMENT AND BE BOUND BY ALL OF ITS TERMS AND CONDITIONS CLICK THE APPROPRIATE BUTTON TO CANCEL THE INSTALLATION PROCESS DO NOT INSTALL OR USE THE SOFTWARE D RETURN THE SOFTWARE WITHIN THIRTY 30 DAYS OF RECEIPT OF THE SOFTWARE WITH ALL ACCOMPANYING WRITTEN MATERIALS ALONG WITH THEIR CONTAINERS TO THE PLACE YOU OBTAINED THEM ALL RETURNS SHALL BE SUBJECT TO N S THEN CURRENT
18. ls Window Help FA Phase Matrix Inc U YD UIII r r Model 0010 Serial Number 1320110149 Options 1 2 3 4 5 6 7 Firmware Ver 0105 its Ref Cal Calibration Date 100000000 Power Meter Path Cal File Calibration File Name GPIBO 13 INSTR Pathinslosset Updated S E ied Calibration Mode Q Autoon fo Warm Up Time min Options B o P SI reco f Save Data to File QuickSyn Frequency Synthesizer Calibration 9 of 30 Calibration Software User s Manual 10 of 30 Power Meter This selection box is used to specify the GPIB address for the power meter connected to the synthesizer To enter a value in this box select the arrow on the left side of the box and select the applicable value Path Cal File Update The name of the path calibration file is indicated in this field and cannot be changed The Update button to the left of the Path Cal File field is used to create the necessary path calibration file Calibration File Name This field indicates the name of the file that contains graph data The path to the file is revealed in the box on the left side of the Calibration File Name field Calibration Mode Auto On The Calibration Mode Auto On button when pressed enables automatic sequencing of calibration steps The button is illuminated when on Warm Up Time This entry box is used to specify the period of time the calibration process will delay before beginning a power sweep To enter a value
19. nel for Calibration The Locate QuickSyn Device dialog box will appear see Figure 6 Figure 6 Example of Locate QuickSyn Device dialog box Locate QuickSyn Device 2 Enter a name for the QuickSyn module The default name is USBComPort The name that is entered here will appear at the top of the Main Control panel which will help the user differentiate between multiple QuickSyn units attached to the computer 3 Select the com port to which the QuickSyn module is connected and choose OK 8 of 30 QuickSyn Frequency Synthesizer Calibration Calibration Software User s Manual Step 2 2 Review Power Calibration Panel The QuickSyn Soft Front Panel for Calibration contains two tabs near the upper left corner see Figure 7 These tabs enable the user to calibrate the synthesizer s RF output power Power Cal tab and its internal reference Ref Cal tab Stop Button This button is used to stop the Soft Front Panel for Calibration from reading and writing to the synthesizer it halts the program and is the preferred way to exit the program Model Number Serial Number Options Firmware Ver Calibration Date The information area located above the tabs reveals the synthesizer s model number serial number date of last calibration currently installed options and firmware version This information cannot be changed Figure 7 Power Calibration Panel QuickSyn Soft Front Panel File Edit Operate Too
20. nel for Calibration There are two calibration modes power calibration and internal oscillator calibration Both may be performed in a laboratory environment which is equipped with the proper equipment without the need to send the unit back to the factory for periodic calibration It is recommended that this User s Manual be read carefully and completely In this document The scope of this document is to describe how to calibrate the QuickSyn Frequency Synthesizer using the QuickSyn Soft Front Panel for Calibration Step 1 Install QuickSyn Soft Front Panel for Calibration Step 2 Review Software Front Panels Step 3 Perform Power Calibration Step 4 Perform Reference Calibration We recently changed the branding of the QuickSyn product line by replacing the NOTE l Phase Matrix logo with the NI logo In some cases as we deplete out stock you may observe that the Phase Matrix logo remains on packaging software manuals and the unit itself Other than the mere change of the logo QuickSyn products continue to employ the same revolutionary phase refining technology that enables blazing fast switching speeds and very low noise and spurious performance in the same compact package QuickSyn Frequency Synthesizer Calibration 3 of 30 Calibration Software User s Manual Step 1 Install QuickSyn Soft Front Panel for Calibration NOTE The QuickSyn USB device driver available online at ni microwavecomponents com NOTE must
21. ower select the Fixed Power Option box and enter a power value otherwise the choice of variable power is the default setting 10 Press the Write Cal to UUT button If the synthesizer is power cycled or turned off and on at the end of the Write Cal to CAUTION i l UUT step the data will not be retained and previous data from permanent memory will be reloaded 26 of 30 This step will take up to 5 minutes The indicator to the right of the Write Cal to UUT button will illuminate when the step is finished QuickSyn Frequency Synthesizer Calibration Calibration Software User s Manual Figure 22 Example Verification of Calibration Data Power dBm 50 i 1 i 1 i i 1 i 1 1 Leask 100 1000 2000 3000 4000 s000 6000 7000 8000 9000 10400 Frequency MHz Save Data to File Verify Cal The user may select among three options to verify the calibration data by selecting the Power Control selection bar The three options are Power Control Fixed Power and User Defined Refer to Sec tion Step 2 2 for an explanation of each of these options 11 After selecting a verification option press the Verify Cal button to start verification of the data As each calibrated frequency is measured the power data is displayed on the Power vs Frequency Graph as shown in Figure 22 It is normal for a step to appear from 10 dBm to 15 dBm at 500 MHz Store in Flash The final step to complete the power calibration is the Store
22. ppears and allows the user to choose the frequency range power range and step size desired for verification To enter a value within the dialog box highlight the default number in each of the entry boxes and enter a value or use the up down arrow on the left side of the boxes Press OK to execute verification The DAC V button is used for troubleshooting and is not intended for normal operation Figure 10 Example User Defined Verify Settings Dialog Box User Defined Verify Settings vi Define This button becomes available when the User Defined option is chosen When pressed the dialog box shown in Figure 10 appears Step Progress The Step Progress bar graphically reveals the progress during each step Step Details This area shows various details as the power calibration progresses Frequency Hz This read only field shows the frequency measured in Hertz as the calibration progresses Power Level This read only field shows the current power level measured as the calibration progresses QuickSyn Frequency Synthesizer Calibration 13 of 30 Calibration Software User s Manual 14 of 30 PCC This read only field displays the Power Cal constant as it is updated during calibration DAC A This read only field shows the DAC A voltage as it is updated during calibration Power vs Frequency Graph The graph displays RF power vs frequency during the process of creating a calibration path file and during several of the calib
23. ration steps The graph data represents the power measured at the RF output connector of the QuickSyn synthesizer e When creating a Path Cal File initially the graph reveals the direct output power across the synthesizer s entire frequency range at a fixed power of 10 dBm After the calibration path a 6 dB attenuator pad is attached the graph shows the measured calibration path loss across the synthesizer s frequency range e When the Max Min Pwr Sweep button is selected the graph displays RF power measured between a specified minimum and maximum range at each frequency step over the synthesizer s entire frequency range e When the Start Cal button is selected the graph reveals calibration frequencies and power control values e When the Verify Cal button is selected the graph shows the measured and verified power at every 5 dB interval across the synthesizer s entire frequency range Save Data to File This button when selected allows graph data to be saved in a tab delimited file QuickSyn Frequency Synthesizer Calibration Calibration SoftwareUser s Manual Step 2 3 Review Reference Calibration Panel The reference calibration panel shown in Figure 11 is accessible by selecting the Ref Cal tab located near the upper left corner of the QuickSyn Soft Front Panel for Calibration The reference calibration panel allows the user to calibrate the synthesizer s internal reference The synthesizer s ov
24. tion Computer e PC with a Windows XP or higher operating system and GPIB enabled The 6 dB attenuator is referred to as Calibration Path in this document QuickSyn Frequency Synthesizer Calibration 17 of 30 Calibration Software User s Manual Step 3 2 Create Path Caibration File A Path Calibration File must be created before starting the power calibration The file will contain data from a direct power measurement and a calibration path loss measurement A Path Calibration File example is shown in Figure 12 Figure 12 Example Path Calibration File PathinsLoss txt Notepad Sel File Edit Format Yiew Help 900000000 900000000 900000000 900000000 900000000 900000000 900000000 9000000001 500000000 500000001 000000001 500000001 908915698 929650148 920998024 920903111 915264042 925701678 937006472 928720497 930095634 924628972 915938635 913081204 VAV VAI VAI AA AA AA AA AA AA AA aN A 000000001 904881072 NOTE If a path calibration has been performed previously it is not necessary to calibrate the path again unless the path has been changed or affected such that the integrity of the path is compromised 18 of 30 QuickSyn Frequency Synthesizer Calibration Calibration Software User s Manual Refer to Figure 13 to setup the equipment for the direct power measurement Figure 13 Equipment Setup for Direct Power Measurement d Oo Ma r
25. wer sweep will take up to 10 minutes The indicator to the right of the Max Min Pwr Sweep button will illuminate when the step 1s finished Figure 20 Example Power Sweep Graph Power dBm 3 le Ale ake alee Se ee P 100 1000 2000 3000 4000 5000 6000 7000 8000 9000 10400 Start Cal 9 Press the Start Cal button to execute the calibration step Each point is measured and displayed on the Power vs Frequency graph see Figure 21 The data is stored in a file named in the Calibration File Name box The file can be loaded at a later date by using the Load Cal File option The calibration step will take from 30 to 60 minutes The indicator to the right of the Max Min Pwr Sweep button will illuminate when the step is finished QuickSyn Frequency Synthesizer Calibration 25 of 30 Calibration Software User s Manual Figure 21 Power vs Frequency Graph Save Data to File Load Cal File If a previously created calibration file is available it can be loaded by selecting the Load Cal File button instead of executing the Start Cal step When a file is loaded the indicator to the right of the Load Cal File button will illuminate Write Cal to UUT The calibration data generated in the previous step must be stored in order to be verified therefore the Write Cal to UUT step must be executed The choice between fixed and variable power is available and must be made before starting the write step To choose fixed p
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