Page 1 T h e t e s t & me a s u r e me n t e q u i p me n t y o u n e e d a t t h e p r i c e y o u w a n t . A l l t e s t I n s t r u me n t s , I n c .
Page 2 MODEL ME7840A POWER AMPLIFIER TEST SYSTEM OPERATION AND MAINTENANCE MANUAL 490 JARVIS DRIVE - MORGAN HILL, CA 95037-2809 P/N: 10410-00225 REVISION: B PRINTED: APRIL 2001 COPYRIGHT 2000 ANRITSU CO...
Page 3 LIMITATION OF WARRANTY The foregoing warranty does not apply to ANRITSU connectors that have failed due to normal wear. Also, the warranty does not apply to defects resulting from improper or inadequate maintenance by the Buyer, unauthorized modification or misuse, or operation outside of the environmental specifications of the product.
Page 5 Safety Symbols Used on Equipment and in Manuals (Some or all of the following five symbols may or may not be used on all ANRITSU equipment. In addition, there may be other labels attached to products that are not shown in the diagrams in this manual.) The following safety symbols are used inside or on the equipment near operation locations to provide infor- mation about safety items and operation precautions.
Page 6 WARNING Use two or more people to lift and move this equipment, or use an equipment cart. There is a risk of back injury, if this equipment is lifted by one person. Safety 2 ME7840A OMM...
Page 7: Table Of Contents
Installation ........2-9 ME7840A OMM...
Page 8 What else is on the CD?....... 2-9 Uninstalling the software......2-9 SERVICE CENTERS.
Page 9 Alternative 2 ........7-3 ME7840A OMM...
Page 10 Chapter 1 General Information Table of Contents SCOPE OF THIS MANUAL....... 1-3 INTRODUCTION .
Page 11 Figure 1-1. Model ME7840A Power Amplifier Test System (PATS)
Page 12: Scope Of This Manual
The procedures described in this manual presume a working knowledge of vector network analyzers and RF power amplifier testing procedures. Refer to the other manuals supplied with the ME7840A (see below) for more detailed explanations of the system equipment and procedures.
Page 13: Related Literature
SC6287 CONVENTIONS Throughout this manual, the ME7840A Power Amplifier System may be referenced as PATS or ME7840A; the MS462XC may be referenced as Scorpion or MS462XC; and the MS4782X Test Set may be referenced as Test Set or MS4782X. SERIAL NUMBER All ANRITSU instruments are assigned a unique six-digit serial number, such as “940101.”...
Page 14: Pats System Overview
HARDWARE The ME7840A hardware (Figure 1-1) consists of a MS462XC, Direct Re- DESCRIPTION ceiver Access (DRA) Scorpion, a MS4782X Test Set, a customer supplied Personal Computer (PC), and an optional current probe (refer to Chapter 2, Figure 2-4 ).
Page 15 HARDWARE DESCRIPTION GENERAL INFORMATION SOURCE 2 SOURCE 1 GPIB SYSTEM CONTROLLER (PC) REVERSE FORWARD TRANSFER SWITCH GPIB STEP ATTENUATORS 70dB, 10dB/step ANALOG IN RECEIVERS EXT I/O CONTROL LINES OPTIONAL EXTERNAL PREAMPLIFIERS COMBINER -30dB LIMITER EXTERNAL CIRCULATOR OPTIONAL SPECTRUM STEP ATTENUATOR ANALYZER 70dB, 10dB/step -30dB...
Page 16 POWER -30dB METER OPTIONAL MODULATION OPTIONAL POWER EXTERNAL SYNTHESIZER SUPPLY PRE-AMP CURRENT PROBE Indicates coax jumper in the as-shipped configuration Figure 1-3. Overall Functional Block Diagram of the Option 2 Power Amplifier Test System (PATS) with MS4782A Test ME7840A OMM...
Page 17: System Description
SYSTEM DESCRIPTION GENERAL INFORMATION 1-10 SYSTEM DESCRIPTION The Power Amplifier Test System (PATS) consists of the MS462xC Direct Receiver Access Scorpion, the MS4782x Power Amplifier Test Set and a li- brary of external measurement software. PATS software (now also called “Scorpion PA Navigator™”) orchestrates calibration and performs mea- surement on power amplifiers in the 800-2400 MHz range.
Page 18 MS4782D Test Set without any circulator by connecting the through arm of the output coupler directly to the 100 watt termination (Port C1 con- nected to Port C2 on the rear. The unit is shipped from the factory with this loop jumper.) ME7840A OMM...
Page 19: Connectors And Ports
AUT. The software supplied by ANRITSU supports operator control of the source selection switch and step attenuator in the test set. This control is achieved through the parallel TTL control lines available at the Scorpion rear panel “External I/O”...
Page 20 50 dBm FOR CONTINUED FIRE PROTECTION REPLACE ONLY WITH SPECIFIED 100W TYPE AND RATED FUSE Termination Ext Preamp (Internal) VNMS Port 2 Test Port 2 Figure 1-5. MS4782A Rear Panel Showing Circulator Connections C1, C2, and C3 ME7840A OMM 1-11...
Page 21: Adaptive P Stop
ME7840/3 Delete Test Set (Note: The ND43425 Accessory and Inter- connect Kit will also be deleted with this option.) 1-14 The accessories described below are available from ANRITSU. OPTIONAL ACCESSORIES Model ML2430A Power Meter Model MG3672A Digital Modulation Signal Generator/with...
Page 22 ACPR measurements · CW and swept power ACPR · GPIB control of Agilent ESG for CDMA and WCDMA · GPIB control of Anritsu MG3681A for WCDMA · GPIB control of R&S FSIQ spectrum analyzer for verification Simplified calibration · Added calibration wizard ·...
Page 23: Preventive Maintenance
PREVENTIVE MAINTENANCE GENERAL INFORMATION 1-16 PREVENTIVE The ME7840A Power Amplifier Test System does not require any preven- MAINTENANCE tive maintenance. 1-17 The ANRITSU MS4782X is the recommended test set for PATS; however, USER SUPPLED TEST users supply their own test set. To ensure that such a test set will func- tion properly with the PATS, a set of specifications and caveats is pro- vided in Appendix B.
Page 24 GENERAL INFORMATION PERFORMANCE SPECIFICATIONS Table 1-4. Performance Specifications for ME7840A Power Amplifier Test System Characteristic Value Notes 100 W maximum With MS4782D Test Set and with23 dB isolation between AUT power output and Amplifier Under Test Power Output MS4623C, Port 2...
Page 25: Recommended Items
Required if amplifier-under-test (AUT) ANRITSU 3750LF has SMA/3.5 mm connectors 1-20 USER SUPPLIED ITEMS The following items required for the operation of the ME7840A Power Amplifier Test System must be supplied by the user. Item Critical Specification Personal Computer (PC) Pentium II or better, 200 MHz or faster, with WindowsÒ...
Page 26 Chapter 2 Installation Table of Contents INTRODUCTION ........2-3 EQUIPMENT COMPLEMENT .
Page 27: Introduction
This chapter describes the installation, connection and set-up of the INTRODUCTION equipment that comprises the ME7840A Power Amplifier Test Station. EQUIPMENT The ME7840A is made up of the following pieces of equipment: COMPLEMENT Scorpionâ Vector Network Measurement System (VNMS), Direct Receiver Access (DRA) version:...
Page 28: Installation - Hardware
2-1 shows how the green colored feet on the case of each unit stack on each other. Foot Foot Figure 2-1. ME7840A Component Assembly Step 2. Install the three front RF interconnect cables. Figure 2-3 (fol- lowing page) shows the installation of the RF interconnect ca- bles between the front panel of the MS462XC and the front panel of the Test Set.
Page 29 TEST PORT 1 INSTALL 50 OHM TERMINATIONS ON UNUSED PORTS INSTALL 50 OHM TERMINATIONS ON UNUSED PORTS Figure 2-3. ME7840A Front RF Cable Connections (through-line shown between test port 1 and test port 2) GPIB CABLE EXTERNAL I/O CONNECTOR GPIB CONNECTOR DEDICATED...
Page 30 Connect the GPIB cable from IEEE-488.2 connector on the rear panel of the MS462XC to the PC/System Controller. (Note: This cable is not supplied with the ME7840A PATS.) Step 6. Connect an AC power cord to each of the three-prong connec- tors on the rear panel of the Test Set and the MS462XC.
Page 31 INSTALLATION INSTALLATION - HARDWARE CURRENT SENSOR EXTERNAL ANALOG CABLE PASSAGE IN CONNECTOR CURRENT PROBE HEAD Figure 2-4. Current Probe Connection ME7840A OMM...
Page 32 INSTALLATION - HARDWARE INSTALLATION Figure 2-5. Software Installation Window ME 7840A OMM...
Page 33: Installation - Software
INSTALLATION INSTALLATION - SOFTWARE INSTALLATION - ME7840A software is delivered on a CD. The ANRITSU Power Tools li- SOFTWARE brary Version 4.0 or higher is required to be installed on the target sys- tem (the PC which is receiving the installation of ME7840A software).
Page 34: Service Centers
SERVICE CENTERS INSTALLATION SERVICE CENTERS ANRITSU Service Centers are listed in Table 2-2. Table 2-2. ANRITSU Service Centers UNITED STATES FRANCE JAPAN ANRITSU COMPANY ANRITSU S.A ANRITSU CUSTOMER SERVICE LTD. 490 Jarvis Drive 9 Avenue du Quebec 1800 Onna Atsugi-shi...
Page 35 Chapter 3 Operations, General Table of Contents INTRODUCTION ........3-3 PREPARING THE SYSTEM .
Page 36: Introduction
Chapter 3 Operations, General The basic operation of the Model ME7840A Power Amplifier Test Station INTRODUCTION (without external preamplifiers) is described in this and the following two chapters: Calibration Operations and Measurement Operations. “Calibra- tion Operations” describes the software measurement calibration func- tion and “Measurement Operations”...
Page 37: Preparing The System
Step 8. If drain current and/or PAE measurements are desired, the optional current probe (ANRITSU part number 2000-1067 or -1085) can be used. Ensure the probe (Figure 3-1) has a fresh battery, and set the zero offset using the MS4623C as follows: Using Domain softkey, set to Transmission &...
Page 38 Cal / Zero Port 2 Port 1 50 Ohm Terminations Sensor Customer Supplied Input Output Power Supply for AUT Amplifier Under Test (AUT) Optional Current Probe Connect when directed by procedure for power calibrations Figure 3-1. PATS Power On Sequence ME7840A OMM...
Page 39: Using Pa Navigator Software
USING PA NAVIGATOR SOFTWARE OPERATIONS, GENERAL USING PA PA Navigator software requires a computer with GPIB capability running NAVIGATOR Windows 95 or better (NT/2000). The software is started by selecting the SOFTWARE “Start” button, then “Programs,” “Pats,” then “Pats” (Figure 3-2). Select “PA Navigator”...
Page 40: Collateral Functions
Save/Recall button on the Scorpion. However, in- stead of saving to the Scorpion hard disk or recalling from the hard disk, the PA Navigator software allows users to Save to the PC’s hard disk and Recall from the PC’s hard disk. ME7840A OMM...
Page 41 COLLATERAL FUNCTIONS OPERATIONS, GENERAL Save Cal Files to PC. Displays a dialog box (similar to that shown for Recall Cal Files from PC, below) showing the cal files stored in the default folder (Temp). This function is useful for saving the front panel setup and calibration data to a file on the PC.
Page 42: Help
The user can replace the “Active” calibration by “Recalling” a calibration set that was previously “Saved”. Exit: Exits the PA Navigator software. Help The “Help” function is not available in the current software. It will be available in future software versions. ME7840A OMM...
Page 43: Tools
COLLATERAL FUNCTIONS OPERATIONS, GENERAL Tools The “Tools” menu (below) displays a drop-down list that provides two collateral options described below. The “Calibration Options” and “Run Calibration Files” options are described in Chapter 4. Check Communications to VNA: Runs a test to check that the VNA communicates with the PC.
Page 44 OPERATIONS, GENERAL COLLATERAL FUNCTIONS Limits: Provides for setting limts for S-Parameter mea- surements. ME7840A OMM 3-11/3-12...
Page 45: Introduction
Chapter 4 Operations, Calibration Table of Contents INTRODUCTION ........4-3 OPERATION, GENERAL .
Page 46: Operation, General
Each of the ME7840A measurements requires a cal- ibration to account for measurement uncertainties. This chapter de- scribes the measurement calibration operations of the Model ME7840A Power Amplifier Test System software.
Page 47 GENERAL OPERATIONS, CALIBRATION The main screen (below) provides access to all software op- tions. Step 2. Click on “Tools” then “Check Communications to VNA” to en- sure that the equipment is properly connected to the bus. If so, the following screen will be displayed: Step 3.
Page 48 Linearity and Flat power calibrations will be skipped. Some of the measurement results may be different than expected. Frequency Range: Used to select the appropriate fre- quency range. The frequency range must be compatible with the hardware in the test set. ME7840A OMM...
Page 49 GENERAL OPERATIONS, CALIBRATION S Parameters: Pressing this button brings up the S Parameters screen shown below. Use the drop-down list arrow keys to display parameter selections. Power Sweep (2T): Pressing this button brings up the two-tone power sweep screen shown below. Use the drop-down list arrow keys to display parameter selec- tions.
Page 50 Use the drop-down list arrow keys to display parameter selec- tions. IMD: Pressing this button brings up the intermodulationdistortion screen shown below. Use the drop-down list arrow keys to display parameter selec- tions. ME7840A OMM...
Page 51 GENERAL OPERATIONS, CALIBRATION Harmonics: Pressing this button brings up the harmon- ics screen shown below. Use the drop-down list arrow keys to display parameter selections. Hot S22: Pressing this button brings up the hot S22 screen shown below. Use the drop-down list arrow keys to display parameter selections.
Page 52 DUT than the Scorpion sources are able to generate. PATS users will insert preamps (or driver amps) into the measurement setup to boost the RF power from the Scorpion sources to a level desirable for measurement. ME7840A OMM...
Page 53 GENERAL OPERATIONS, CALIBRATION Pre Amp Gain: To properly set up the calibration, PA Navigator needs to know the gain of this preamplifier in the frequency range being measured. If the gain varies in the frequency range then enter the maximum gain. This form helps users set up the ME7840 for calibration.
Page 54 +8 dBm to +28 dBm (20 dB sweep range). When no preamp is present and a standard test set isused, the default linearity calibration is from –19 dBm to +6 dBm (or 25 dB sweep range). ME7840A OMM 4-11...
Page 55 GENERAL OPERATIONS, CALIBRATION Anticipated DUT Max Output Power: Used to set the maximum output power. Assuming the Max input power is applied to the DUT, what is the expected maximum DUT output power? PA Navigator needs to know this to help set the test set attenuator during calibration and measurement.
Page 56 Nominal Offset Power: Note that the value in this box will change as the Power meter attenuation value is changed. Make sure that the value in this box doesn’t ex- ceed the specification of the power meter sensor. ME7840A OMM 4-13...
Page 57 GENERAL OPERATIONS, CALIBRATION Cancel: Aborts the Setup Wizard and returns to the Cali- bration Options form. Returns: Returns to the Calibration Options form. Return: Returns to the Tools menu. Run Cal Now: This button starts the calibration; it performs the same function as “Run Calibration,”...
Page 58 Many calibration kits include adapters that are designed to have equal phase length. These parts are called phase equal adapters (PEA). ANRITSU designs in-series adapters (e.g., ME7840A OMM 4-15...
Page 59 GENERAL OPERATIONS, CALIBRATION SMA Connector M-M, M-F, F-F) to be phase insertable when technically possible. NOTE The linear power calibration takes up-to-5 minutes to complete. It calibrates the output power at the refer- ence plane for both internal sources (power out of Port 1 then Port 3) according to the target power across the frequency range set in the calibration speci- fication file.
Page 60 Test Ports 1 and 2 on the MS4782X Test Set, as shown below. Step 9. Press “Next” to perform a receiver calibration. When this cali- bration finishes, the program returns to the main screen. ME7840A OMM 4-17...
Page 61 GENERAL OPERATIONS, CALIBRATION Step 10. Hot S22: If the Hot S22 box is checked, it is the next calibra- tion to appear. Hot S is a return loss measurement of an am- plifier’s output port (Port 2) while stimulus is applied to its input port.
Page 62 STALL KIT INFO FROM FLOPPY DISK. softkeys. Step 12. Press “OK” for the next step (below). Connect the Open to Port 2. Step 13. Press “OK” for the next step (below). Connect the Short to Port 2. ME7840A OMM 4-19...
Page 63 GENERAL OPERATIONS, CALIBRATION Step 14. Press “OK” for the next step (below). Connect the Load to Port Step 15. Press “OK” to complete the Hot S calibration. Step 16. S-Parameters Cal: If the S-Parameters box is checked, it is the next calibration. The prompts cause the Scorpion to be placed into a state where it is ready to make calibrated mea- surements on the user’s AUT.
Page 64 STALL KIT INFO FROM FLOPPY DISK softkeys. Step 18. Press “OK” for the next step (below). Connect the Broadband Load on Test Ports 1 and 2 on the ME7840A Test Set. Step 19. Press “OK” for the next step (below). Connect the Open to Test Port1 and the Short to Test Port 2.
Page 65 GENERAL OPERATIONS, CALIBRATION Step 20. Press “OK” for the next step (below). Connect the Short to Test Port 1 and the Open to Test Port 2. Step 21. Press “OK” for the next step (below). Connect the Throughline between Test Ports 1 and 2. 4-22 ME 7840A OMM...
Page 66 OPERATIONS, CALIBRATION GENERAL Step 22. Press “OK” to complete the S Parameters calibration (below). ME7840A OMM 4-23...
Page 67 GENERAL OPERATIONS, CALIBRATION Step 23. Power Sweep (1T)/Power Sweep (2): If the Power Sweep (1T) or (2T) box is checked, it is the next calibration to appear.The prompts cause the Scorpion to be placed into a state where it is ready to make calibrated measurements on the user’s AUT. Step 24.
Page 68 OPERATIONS, CALIBRATION GENERAL the user’s AUT. Follow the prompt and connect a throughline between Test Ports 1 and 2 on the MS4782X Test Set. ME7840A OMM 4-25...
Page 69 GENERAL OPERATIONS, CALIBRATION Step 26. Press “Next” to begin the Power Sweep cal file setup (below). 4-26 ME 7840A OMM...
Page 70 Scorpion to be placed into a state where it is ready to make calibrated mea- surements on the user’s AUT. Step 28. Press “Next” to end the calibration and return to the main screen. ME7840A OMM 4-27/4-28...
Page 71 Chapter 5 Operations, Measurement Table of Contents INTRODUCTION ........5-3 OPERATION, GENERAL .
Page 72: Introduction
This chapter describes the seven measurements available with the INTRODUCTION ME7840A software: S-Parameters, Power Sweep, IMD (intermodulation distortion), Harmonics, and Hot S Refer to Chapter 3 for general operation and setup of the ME7840A. OPERATION, GENERAL MEASUREMENT Measurements always include a degree of uncertainty due to imperfec- CALIBRATION tions in the measurement system.
Page 73 ” measurement and will describe certain differences at the end of the procedure. Procedure. Prepare the ME7840A as shown in Chapter 3. Enter the appropriate test values in the displayed User Input screen. The input fields are described below: The inputs required for this test are de- scribed below.
Page 74: S-Parameter Tests
Microsoft Excel spreadsheet. BMP: Same data that is sent to printer may be saved to a bmp (bitmap) file. Upper Limit/Lower Limit: Limit values as set using Tools menus (Chapter 3). Return: Returns to the main PATS screen. ME7840A OMM...
Page 75 S-PARAMETERS OPERATIONS, MEASUREMENT Change Params: Returns to User Input screen. Autoscale Checkbox: Turns autoscale on or off. Autoscale automatically scales the mea- surement results. Reset/Zoom: Disabled for this test. Max/Min: Type in maximum and minimum display value. Use Rescale after changing val- ues.
Page 76: S-Parameter Test: K Factor
TEST: K FACTOR described in Chapter 1, paragraph 1-11. Procedure. Prepare the ME7840A as shown in Chapter 3. Enter the appropriate test values in the displayed User Input screen. The input fields are described below: The inputs required for this test are de- scribed below.
Page 77 S-PARAMETERS OPERATIONS, MEASUREMENT Select Start Test: Observe that the test screen (Figure 5-1) appears. Figure 5-2. S-Parameters Test Screen for S Button Panel Options: Print: Prints a copy of the screen graphic to a printer. Write Data: Two data files are written to the C:\Program Files\Pats\Datafiles folder;...
Page 78 Markers Screen Options for K Factor (left): Marker Slider: Moves marker between data points. Frequency Display: Displays marker fre- quency. KF: Displays the K factor value. K factor is a stability factor of interest for amplifier design- ers. ME7840A OMM...
Page 79 Types: Power Sweep (single frequency), Multi Frequency Power Sweep, Gain and IMD. Single Frequency Procedure. Power Sweep Prepare the ME7840A as shown in Chapter 3. Enter the appropriate test values in the displayed User Input screen. The input fields are described below: Measurement Type: Drop down options showing Power Sweep (single frequency), Multi Freq Power Sweep (uses 3 frequencies), Gain &...
Page 80: Power Sweep, Two Tone
POWER SWEEP, TWO TONE Display Options: Power Sweep Pout vs Pin Gain vs Pin Gain vs Pout Overlay Power Sweep Pout vs Pin Gain vs Pin Gain vs Pout MultiFrequency Power Sweep Gain Pout IMD Offset Sweep Gain Pout ME7840A OMM 5-11...
Page 81 S-PARAMETERS OPERATIONS, MEASUREMENT Select Start Test and observe that the test screen (Figure 5-3) appears. Figure 5-3. Single Frequency Power Sweep Test Button Panel Options: Print: Prints a copy of the screen graphic to a printer. Write Data: Excel data is written to C:\Pro- gram Files\Pats\Datafiles - the file name will have a time stamp.
Page 82 IM7U:Intermodulation product 7 upper side- band IM7L:Intermodulation product 7 lower side- band PAE: Power-added efficiency percentage. Drain: Drain current value. NOTE PAE and Drain may be on or off according to check box in parameter screen. ME7840A OMM 5-13...
Page 83 POWER SWEEP, TWO TONE OPERATIONS, MEASUREMENT Overlay Power Sweep Procedure. Measurement Type: Drop down options. Set to “Multi Freq Power Sweep ” for this test. Main Tone (MHz): CW Frequency setting for source 1. The user may set a lower tone and upper tone.
Page 84 Write Data: Excel data is written to C:\Pro- gram Files\Pats\Datafiles - the file name will have a time stamp. For example: “S17-16-19-29.csv” was created on the 17th day of the month at 4:19 PM and 29 seconds. CSV ME7840A OMM 5-15...
Page 85 POWER SWEEP, TWO TONE OPERATIONS, MEASUREMENT files are comma separated text and can be opened iin Windows Excel. Pause/Go: Stops data transfer from VNA to PC and places MS4623C in “Local” mode. Return: Returns to the main PATS screen. Change Params: Returns to User Input screen.
Page 86: Single Frequency Power Sweep
Gain and IMD. Single Frequency Procedure. Power Sweep Prepare the ME7840A as shown in Chapter 3. Enter the appropriate test values in the displayed User Input screen. The input fields are described below: Measurement Type: Drop down options set to “Gain and Phase ”...
Page 87: Power Sweep, One Tone
POWER SWEEP, ONE TONE OPERATIONS, MEASUREMENT Display Options Power Sweep Pout vs Pin Gain vs Pin Gain vs Pout Gain/Phase Gain/Phase vs Pin Gain/Phase vs Pout MultiFrequency Power Sweep Gain Pout 5-18 ME 7840A OMM...
Page 88 4:19 PM and 29 seconds. CSV files are comma separated text and can be opened iin Windows Excel. Pause/Go: Stops data transfer from VNA to PC and places MS4623C in “Local” mode. Return: Returns to the main PATS screen. ME7840A OMM 5-19...
Page 89 POWER SWEEP, ONE TONE OPERATIONS, MEASUREMENT Change Params: Returns to User Input screen. Autoscale Checkbox: Turns autoscale on or off. Autoscale automatically scales the mea- surement results. Max/Min: Type in maximum and minimum display value. Use Rescale after changing val- ues.
Page 90: Imd
OPERATIONS, MEASUREMENT This test measures inter-modulation distortion. Procedure Prepare the ME7840A as shown in Chapter 3. Enter the appropriate test values in the displayed User Input screen. The input fields are described below: Measurement Type: Already set to “IM” for IMD –...
Page 91 OPERATIONS, MEASUREMENT Select Start Test. Observe that the test screen (Fig- ure 5-6) appears. Figure 5-6. Intermodulation Distortion Test Screen Button Panel Options: Print: Prints a copy of the screen graphic to a printer. Write Data: Excel data is written to C:\Pro- gram Files\Pats\Datafiles - the file name will have a time stamp.
Page 92 M2-M1Checkbox: Turns M2-M1 feature on or off. M2-M1 Readout: Displays the value of M2 mi- nus M1. M2-M1 Slider: Moves M2 between displayed harmonics. A blue + symbol appears on the top of the selected harmonic. ME7840A OMM 5-23...
Page 93 HARMONICS The harmonics test measures and displays the harmonics in the device under test. Procedure Prepare the ME7840A as shown in Chapter 3. Enter the appropriate test values in the displayed User Input screen. The input fields are described below: Measurement Type: Already set to “HA”...
Page 94: Harmonics
4:19 PM and 29 seconds. CSV files are comma separated text and can be opened iin Windows Excel. BMP: Same data that is sent to printer may be saved to a bmp (bitmap) file. ME7840A OMM 5-25...
Page 95 HARMONICS OPERATIONS, MEASUREMENT Pause/Go: Stops data transfer from VNA to PC and places MS4623C in “Local” mode. Return: Returns to the main PATS screen. Change Params: Returns to User Input screen. Autoscale Checkbox: Turns autoscale on or off. Autoscale automatically scales the mea- surement results.
Page 96 AUT for measuring S at the AUT output port. Procedure Prepare the ME7840A as shown in Chapter 3. Enter the appropriate test values in the displayed User Input screen. The input fields are described below: S Parameter: Already set to “Hot S...
Page 97: Hot S22
HOT S22 OPERATIONS, MEASUREMENT The PATS Hot S measurement provides the following additional fea- tures: Ability to vary the AUT input excitation power level (Source 2 of Scorpion, at Port 1) while observing the Hot S response. Pressing “U” on the PC keyboard increases the input excitation power level (U for up).
Page 98 BMP: Same data that is sent to printer may be saved to a bmp (bitmap) file. Pause/Go: Stops data transfer from VNA to PC and places MS4623C in “Local” mode. Upper Limit/Lower Limit: Limit values as set using Tools menus (Chapter 3). ME7840A OMM 5-29...
Page 99 HOT S22 OPERATIONS, MEASUREMENT Return: Returns to the main PATS screen. Change Params: Returns to User Input screen. Autoscale Checkbox: Turns autoscale on or off. Autoscale automatically scales the mea- surement results. Reset/Zoom: Disabled for this test. Max/Min: Type in maximum and minimum display value.
Page 100: Acpr
This section describes the screens that guide the user through the adja- cent channel power ratio (ACPR) measurement. ACPR is fully described in Anritsu Application Note 11410-00264, which is available from your lo- cal representative or from our Internet site, www.us.anritsu.com.
Page 101 ACPR OPERATIONS, MEASUREMENT Select Start Test and observe that the test screen (Figure 5-8) appears. Figure 5-9. ACPR Test Screen Button Panel Options: Print: Prints a copy of the screen graphic to a printer. Write Data: Excel data is written to C:\Pro- gram Files\Pats\Datafiles - the file name will have a time stamp.
Page 102 M1: Turns marker on or off (checked or un- checked). If on: Slider moves marker between data points, and window below displays marker frequency and amplitude values amplitude value at the marker. M2: Same as above. M3: Same as above. M4: Same as above. ME7840A OMM 5-33...
Page 103: Power Sweep Measurements
ACPR OPERATIONS, MEASUREMENT Power Sweep Procedure Measurements Prepare the ME7840A as shown in Chapter 3. Enter the appropriate test values in the displayed User Input screen. The input fields are described below: Signal Generator Parameters:Provides controls for the Signal Generator: Anritsu MG3681 for WCDMA, Agilent ESG for CDMA and WCDMA.
Page 104 BMP: Same data that is sent to printer may be saved to a bmp (bitmap) file. Pause/Go: Stops data transfer from VNA to PC and places MS4623C in “Local” mode. Upper Limit/Lower Limit: Limits are off for ACPR. ME7840A OMM 5-35...
Page 105 ACPR OPERATIONS, MEASUREMENT Return: Returns to the main PATS screen. Change Params: Returns to User Input screen. Autoscale Checkbox: Turns autoscale on or off. Autoscale automatically scales the mea- surement results. Reset/Zoom: Disabled for this test. Max/Min: Type in maximum and minimum display value.
Page 106 Chapter 6 Performance Verification Procedure Table of Contents INTRODUCTION ........6-3 CONVENTIONS .
Page 107: Introduction
EQUIPMENT ANRITSU Model ML243XA Power Meter ANRITSU Model MA247XA Power Sensor ANRITSU Model 3653 or 3753LF N connector Calibration Kit ANRITSU Model SC5237 6 dB Offset Termination ANRITSU Model SC5270 20 dB Offset Termination ANRITSU Model 11N50B Power Divider...
Page 108: Source Output Accuracy
SOURCE OUTPUT ACCURACY PERFORMANCE VERIFICATION SOURCE OUTPUT This test verifies the source output accuracy of the MS462XC. The test ACCURACY procedure uses the Power ALC Verification built-in function of the MS462XC Basic Measurement software. Setup: Step 1. Connect a GPIB cable between the power meter GPIB connec- tor and the MS462XC dedicated GPIB connector, as shown in Figure 6-1.
Page 109: Return Loss Confidence Test
30 minutes. Step 1. Press Default key then 0 key. Step 2. Press Seq key and .select: TTL I/O. PARALLEL OUT SETUP SET PARALLEL OUT PORT (0-255) Step 3. Change the value from 0 to 8. Step 4. Select: ME7840A OMM...
Page 110: Test Procedure
RETURN LOSS CONFIDENCE TEST PERFORMANCE VERIFICATION RETURN RETURN Step 5. Press Display key and select: DISPLAY MODE SINGLE CHANNEL RETURN Step 6. Press Ch 4 key and then Display key. Step 7. Select: GRAPH TYPE LOG MAGNITUDE Step 8. Press Ch 1 key and select LOG MAGNITUDE. Test Procedure: Insert the Calibration Component Coefficients disk into the MS462XC floppy disk drive.
Page 111 SC5237 Termination. Step 15. Connect SC5270 20 dB Offset Termination to Test Port 2 of MS4782 Test Set. Record the measured value in Table 6-1 and verify the measured S value is 20 ± 1.0 dB. Remove SC5270 Termination. ME7840A OMM...
Page 112: System Dynamic Range
SYSTEM DYNAMIC RANGE PERFORMANCE VERIFICATION Table 6-1. Return Loss Specifications Offset Termination Measured S Value Measured S Value* Specification 6 ±0.4 dB SC5237 20 ±1.0 dB SC5270 * Apply to Test Set with Hot S Capability only. SYSTEM DYNAMIC This test verifies the PATS system dynamic range. RANGE Test Procedure: Step 1.
Page 113 Remove the through cable between Test Port 1 and Test Port 2 of MS4782X Test Set and connect terminations to both ports. Step 15. Press Display key and then select SCALE. Step 16. Set REFERENCE VALUE to -80. Step 17. Verify that the trace is less than -80 dB. ME7840A OMM...
Page 114: Receiver Display Linearity
RECEIVER DISPLAY LINEARITY PERFORMANCE VERIFICATION RECEIVER DISPLAY This test verifies the magnitude display linearity of the receiver. LINEARITY MS462X3C DRA Scorpion GPIB ML243XA Port 3 Port 1 Port 2 Power Meter CALIBRATOR ML2408A Power Meter MS4782A Power Meter Port 3 Port 1 Port 2 Test Set...
Page 115 Use the soft key to turn on Marker 1. Then use the numeric data entry key to change POINT to 25. Step 23. Press Marker key again. Step 24. Use the soft key to SCREEN DISPLAY ON. ME7840A OMM 6-11...
Page 116 RECEIVER DISPLAY LINEARITY PERFORMANCE VERIFICATION Step 25. Press Power key and select SOURCE 1 SETUP. Step 26. Set PORT 1 ATTN to 10 dB. Record the Power Meter Readout and the Marker 1 Readout to the table on next page. Repeat this step for other PORT 1 ATTN setting listed in the table.
Page 117 Chapter 7 Preamplifier Operations Table of Contents INTRODUCTION ........7-3 USE OF EXTERNAL PREAMPLIFIERS.
Page 118 Figure 7-2 is a suggested block diagram for this configuration. PATS is designed to enable power calibrations in the presence of external preamplifiers. For the flat power calibration, the user can specify his tar- get power (at the AUT input which is the calibration reference plane) and ME7840A OMM...
Page 119 USE OF EXTERNAL PREAMPLIFIERS PREAMPLIFIER OPERATIONS an approximate source power (at the Scorpion Port 1, Port 3, or both). For tests involving power sweep, the MS7840A enables a linear power calibration over the desired power range (and the frequency range). For this calibration, the user can specify his target power start and stop val- ues and a nominal power offset between this reference plane and the Scorpion source (the net of preamplifier gain minus test setup losses).
Page 120 ATTENUATORS COMBINER -30dB LIMITER EXTERNAL CIRCULATOR OPTIONAL STEP SPECTRUM ATTENUATOR ANALYZER 70dB, 10dB/step -30dB -30dB POWER -30dB METER OPTIONAL MODULATION POWER SYNTHESIZER SUPPLY USER SUPPLIED CIRCULATOR & CURRENT PROBE TERMINATION Figure 7-1. MS4782A with External Preamplifiers (Moderate Power) ME7840A OMM...
Page 121 USE OF EXTERNAL PREAMPLIFIERS PREAMPLIFIER OPERATIONS SOURCE 2 SOURCE 1 GPIB SYSTEM CONTROLLER (PC) FORWAR REVERSE TRANSFER SWITCH GPIB STEP ATTENUATORS 70dB, 10dB/step ANALOG IN RECEIVERS EXT I/O CONTROL LINES EXTERNAL PREAMPLIFIERS ATTENUATORS COMBINER OPTIONAL SPECTRUM ANALYZER -30dB -30dB POWER METER POWER SUPPLY...
Page 122 Index ACPR TESTS ....5-31 - 36 LINEARITY, FLAT, RECEIVER ..4-15 ADAPTIVE P STOP ....1-12 MEASUREMENT CALIBRATION .
Page 123 Index S-PARAMETER TEST: K FACTOR..5-7,5-9 TEST EQUIPMENT ....6-3 S-PARAMETER TESTS ... . 5-4 - 5 Starting the PATS Software .

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