Related Manuals for Tektronix PSM3000 Series
Summary of Contents for Tektronix PSM3000 Series
- Page 1 PSM3000, PSM4000, and PSM5000 Series RF and Microwave Power Sensors/Meters User Manual *P077059201* 077-0592-01...
- Page 3 PSM3000, PSM4000, and PSM5000 Series RF and Microwave Power Sensors/Meters User Manual www.tektronix.com 077-0592-01...
- Page 4 Copyright © Tektronix. All rights reserved. Licensed software products are owned by Tektronix or its subsidiaries or suppliers, and are protected by national copyright laws and international treaty provisions. Tektronix products are covered by U.S. and foreign patents, issued and pending. Information in this publication supersedes that in all previously published material.
- Page 5 Tektronix, with shipping charges prepaid. Tektronix shall pay for the return of the product to Customer if the shipment is to a location within the country in which the Tektronix service center is located. Customer shall be responsible for paying all shipping charges, duties, taxes, and any other charges for products returned to any other locations.
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Page 7: Table Of Contents
Table of Contents Preface ....................... Safety Information ..................... About This Manual .................... Products......................Key Features ....................Where To Find More Information ................. Getting Started ...................... Install the Software .................... Connect to a Computer..................Start An Application..................Functional Check ..................... Operating Basics....................Measurement Capabilities ................... - Page 8 Table of Contents List of Figures Figure 1: Power Meter application interface using a PSM5120..........Figure 2: Diagram of a burst time slot ................Figure 3: Pulse Profiling application interface ..............Figure 4: Gate positioning diagram ................Figure 5: Position of gates for measurement ..............Figure 6: High Speed Logger application window ............
- Page 9 Table of Contents List of Tables Table i: Product documentation................. Table 1: Functions by instrument model ................ Table 2: Power Meter default values ................Table 3: Sweep time values ..................RF and Microwave Power Sensors/Meters...
- Page 10 Table of Contents RF and Microwave Power Sensors/Meters...
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Page 11: Preface
Please refer to that document before installing and using this product. About This Manual This document contains the following information about the Tektronix PSM3000 Series, PSM4000 Series, and PSM5000 Series RF and Microwave Power Sensors/Meters: The Getting Started chapter provides an overview of instrument features, installation instructions, and a functional check procedure. -
Page 12: Products
Preface Products The Tektronix PSM3000 Series, PSM4000 Series, and PSM5000 Series RF and Microwave Power Sensors/Meters convert radio frequency (RF) and microwave power into digital data at the point of measurement. They are ideal for troubleshooting and characterization in the lab, and can be used for radio frequency (RF) component testing. -
Page 13: Where To Find More Information
Where To Find More Information You can find more information about your instrument in the following documents. These documents can be found on the Tektronix Web site at www.tektronix.com/manuals, on the product documentation USB device that shipped with your instrument, or both. - Page 14 Preface viii RF and Microwave Power Sensors/Meters...
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Page 15: Getting Started
Before connecting the instrument to a computer, you need to first load the software provided on the USB memory device that shipped with your instrument. You can also find the latest software on the Tektronix Web site at www.tektronix.com/software. Computer, System, and Computer hardware requirements. - Page 16 Sample Code: provides programming examples for remote control of the instrument. You can read more about remote programming in the PSM3000, PSM4000, and PSM5000 Series RF and Microwave Power Sensors/Meters Programming Manual available on the Tektronix Web site at www.tektronix.com/manuals. RF and Microwave Power Sensors/Meters...
- Page 17 Getting Started 1 Go to www.tektronix.com and search for the most recent software version for this product and download it to your computer. Once downloaded, double click on the .exe file to start installation. NOTE. You can also insert the USB memory device that shipped with your instrument into the computer USB drive.
- Page 18 Getting Started 4 Read the license agreement and select I agree and then click Next to continue. 5 The installer is ready to install the following software on your computer (this will vary depending on options and instrument model): Power Meter application Pulse Profiling application High Speed Logger Sample Code...
- Page 19 Getting Started 6 Confirm location for download or provide a location, and then click Next. 7 When prompted, confirm installation by selecting Next. RF and Microwave Power Sensors/Meters...
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Page 20: Connect To A Computer
Power Meter application software and any other instrument applications that were installed. NOTE. Tektronix recommends using the USB cable supplied with this product. The supplied cable has 20 AWG power conductors that are a heavier gauge than most USB cables. - Page 21 Getting Started 1 Use a USB-A to USB-B interface cable to connect the instrument to the computer. 2 A Welcome to the Found New Hardware Wizard dialog box will appear. Select Yes, this time only and then select Next to continue. 3 Select Install the software automatically (Recommended) and then select Next to continue.
- Page 22 Getting Started 4 The Wizard will search for the appropriate software. Once found, the driver will install. 5 The Wizard will show you when the installation is complete. Select Finish. You can now open the Power Meter application or other instrument applications that were installed. RF and Microwave Power Sensors/Meters...
- Page 23 Getting Started Connect Multiple If you are connecting more than one instrument to a computer, use a USB hub. The USB port or hub must supply more than 450 mA at 5 VDC for power Instruments instrument operation. Read more about USB power requirements. (See page 1, Computer, System, and USB Requirements.) LED Indicator There is a green LED located below the trigger out (TO) connector on the...
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Page 24: Start An Application
Getting Started Start An Application To start an application, double-click the appropriate icon on the Desktop of your computer, or select it from its program location on your computer (for example, through the Start menu). NOTE. An application will not launch unless the instrument is connected to the computer. - Page 25 Getting Started Warm Up Procedure 1. For 24 hours prior to and during execution of this test procedure, the instrument must be stored in a stable laboratory environment. In addition, the instrument should be powered for at least 20 minutes before starting the test. Stable environmental conditions are defined as: Temperature: 20 °C to 30 °C (68 °F to 86 °F) Humidity: 15% to 95% noncondensing...
- Page 26 Getting Started RF and Microwave Power Sensors/Meters...
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Page 27: Operating Basics
Operating Basics This section contains discussions of the following topics, which apply to all instrument models: Measurement capabilities Pulse power and pulse profiling measurements Procedures for setting center frequency and making measurements All instruments models can use the Power Meter application. Some measurement functions, however, are only available on specific models. -
Page 28: Measurement Capabilities
The PSM3000 series instruments are true average instruments that are well-suited for making accurate average power measurements on both narrowband and wideband signals. There are two applications that work with the PSM3000 series instruments: the Power Meter application and the High Speed Logger application. -
Page 29: Pulse Measurements
Operating Basics Pulse Measurements NOTE. This information applies to the PSM4000 and PSM5000 series instruments only. The PSM4000 and PSM5000 series instruments use a detector, sampling system, and signal processing to detect RF pulses and perform measurements on them. In addition to overall average power, these instruments can measure the following: Average power within the pulse Peak power within the pulse... -
Page 30: Pulse Profiling
Operating Basics Pulse Profiling NOTE. This information applies to the PSM5000 series instruments only. The PSM5000 series instruments using the Pulse Profiling application use equivalent-time sampling to build a trace of the envelope of repetitive input signals. The equivalent-time sample rate is 48 MS/s. A wide variety of measurements are available in the Pulse Profiling application. -
Page 31: Configure Instrument For Measurements
A factory calibration is required once a year to maintain traceability to national standards. CAUTION. The PSM3000 series instruments require time to thermally stabilize. Little, if any, warm up time is required for measurements above -40.0 dBm. However, to make accurate measurements below -40.0 dBm, allow the PSM3000 series instrument to thermally stabilize for one hour. - Page 32 Operating Basics RF and Microwave Power Sensors/Meters...
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Page 33: Power Meter Application
Power Meter Application NOTE. This application is available for all instrument models. The Power Meter application software allows you to make power meter measurements from a display that emulates a typical bench power meter. Double click the Power Meter application icon on your Desktop to start the application. The control panel will appear with default settings applied. - Page 34 Power Meter Application 3. Digital Readout: shows measurements in digital format; shows limits as pass, fail, low, high, or off 4. Settings Panel: access measurement setups, offset setups, trigger setups and utility functions by clicking on the related button 5. Power Meter Bar: provides an analog view of the meter reading; this view can be enabled in the Display drop down menu CW/Pulse Switch between CW and Pulse measurements.
- Page 35 Power Meter Application For the upper and lower limit, the value can be equal outside the limit, equal between the limit, or equal to one of the limits. Any condition may be specified as pass or fail. Averaging Two types of averaging are available to use in the Power Meter application to improve the stability of measurements, especially at low-levels: Averaging and Extended Averaging.
- Page 36 Power Meter Application Set Ref Set the reference value so that a subsequent power level can be measured relative to the power measurement on the display. When Ref Offset is activated, the REL indicator will show in the digital readout display and the power units will change to “dB relative”.
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Page 37: Figure 2: Diagram Of A Burst Time Slot
Power Meter Application Burst Measurements The PSM4000 and PSM5000 series instruments allow you to make measurements on RF bursts. To access this measurement, select Burst Measurement... from the Measurement drop down menu. From the window that appears, you can specify a trigger, a delay relative to the trigger, and the sweep time over which the power measurement is taken. - Page 38 Power Meter Application Minimum Loss Pad The instrument has a 50 Ω input impedance. However, for applications requiring a 75 Ω input impedance, you may attach a 75 Ω minimum loss pad (MLP) to the input. You can correct for the pad by selecting 75 ohm MLP from the Offsets & Response menu.
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Page 39: Table 2: Power Meter Default Values
Power Meter Application Quick Setup Select to call a window that allows you to set the mode (CW or Pulse), frequency, power units, averages, and offsets all from one window. You can also find this item in the Utility drop down menu. Data Logger This function allows you to plot measurement trends on the display or record a measurement in a file. - Page 40 Power Meter Application Table 2: Power Meter default values (cont.) Parameter Default value Response 0 dB, disabled Duty Cycle 10%, disabled Minimum Loss Pad (75 ohm) Not selected. The Default Setup button will not change the input impedance if this value is selected (enabled).
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Page 41: Make An Average Power (Cw) Measurement
Settings Panel to activate CW mode. You can also enable CW from the Measurement menu. NOTE. For PSM3000 series instruments, the software is always in CW mode, so the button is not available. 2. Click Measurement > Set Frequency and the Set Frequency dialog box will open. -
Page 42: Make A Pulse Measurement Using Duty Cycle
This method of measuring average pulse power is available with all instrument models. However, this is the only method for measuring average pulse power on PSM3000 series instruments. This measurement uses an assumed duty cycle as an adjustment to the indicated power. This type of measurement is more prone to error than the signal processing pulse power measurements available on PSM4000 and PSM5000 series instruments. -
Page 43: Make A Pulse Power Measurement
Power Meter Application Make a Pulse Power Measurement This example procedure applies to the PSM4000 and PSM5000 series instruments only. It assumes an RF signal source for a pulse-modulated output with the following parameters: CW Frequency: 1 GHz Power Level: 0 dBM (1 mW) PRF: 10 kHz (or a PRI of 0.1 ms) Pulse Modulation: 50% Duty Cycle (or a pulse width of 50 μs) RF Power: off... - Page 44 Power Meter Application 5. Connect the instrument to the RF source and turn on RF power. The software should indicate these approximate values: 1 GHz 0 dBm pulse power 50% duty cycle 0 dBm peak -3 dBm average 3 dB crest factor (the ratio between peak and average power) The measurement changes as you vary the source power.
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Page 45: Pulse Profiling Application
Pulse Profiling Application Pulse Profiling Application NOTE. This application is only available for PSM5000 series instruments. For basic CW and pulse power measurements, use the Power Meter application. To perform detailed measurements on repetitive, pulsed RF and microwave signals with PSM5000 series instruments, use the Pulse Profiling application. This application displays a trace of the pulse envelope and allows you to take measurements at any point on the trace. - Page 46 Pulse Profiling Application The main elements of the display are: 1. Banner: unit address and the unit name 2. Toolbar: Allows you to configure the instrument for measurements, control the display, access Help, and perform other tasks. (See page 36, Toolbar Functions.) 3.
- Page 47 Pulse Profiling Application 5. Click the Zoom In or Zoom Out buttons. These buttons double or halve the current viewing area. These buttons are available in the Results window and in the Display Control toolbar. 6. Click the Reset button. This resets the Measurement Trace window to include the entire Panoramic trace.
- Page 48 Pulse Profiling Application Auto Measure Panel The Auto Measure panel consists of the Results window and the Auto Measure window. Click the Start Measurement button to start the automatic measurement feature and get a complete characterization of the pulse based on the selected sweep time.
- Page 49 Pulse Profiling Application Auto Measure Window. This window allows you to make a comprehensive list of measurements based on the Measurement Trace window by clicking the Start Measurement button. A toolbar also allows you to select Gates, Markers, or Highlight functions; to select the percentage of highlight; to reset the Measurement Trace window to include the entire Panoramic trace;...
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Page 50: Toolbar Functions
Pulse Profiling Application Customize the Display The display is composed of five movable windows that can be rearranged on the display using Microsoft drag and drop tools. Moving menu tabs. You can rearrange the menus in the menu panel. Just click on the menu you want to move and then drag it the desired location in the menu panel. -
Page 51: Table 3: Sweep Time Values
Pulse Profiling Application However, the trace data has much higher resolution. If you want to see more detail on a 10,000 point trace, for example, you can use the zoom icons on the Display Control toolbar. (See page 44, Zoom In and Out.) Table 3: Sweep time values Sweep time Time between samples... - Page 52 Pulse Profiling Application Response. Use the Response function for correcting measurements through devices like directional couplers. The Response function allows you to enter a set of amplitude and frequency pairs. As you change the frequency of measurement, the application automatically adjusts the offset based on the frequency you selected.
- Page 53 Pulse Profiling Application Internal Manual Level: You must set the trigger level manually. The trigger is based on the input signal as it crosses the level you specify. If you set the trigger level too high, then you will not get a trace. Instead, you will get a “Trigger?” message in the middle top of the Measurement grid.
- Page 54 Pulse Profiling Application Averaging & Filters You can use averaging and the low-pass filter can help improve measurements near the noise floor of the instrument. Increasing the number of averages maintains wave shape but slows down the update rate of the trace. A lower low-pass filter setting will provide faster trace updates, but results in a rounded pulse shape with longer rise and fall times.
- Page 55 Pulse Profiling Application To move or place a particular marker, the Pointer Control mode (found in the Display Control toolbar and in the Results window) must be set to Markers Once a marker is turned on and the pointer mode is set to Markers, you can click and drag on the Measurement area to position the marker.
- Page 56 Pulse Profiling Application part of a pulse. The pulse criteria defines the edges of the positive portion of the entire pulse and is relative (or added) to the measurement threshold if threshold is enabled. It is relative to the noise floor if the measurement threshold is disabled. Gates The time gates allow you to characterize the incoming signal.
- Page 57 Pulse Profiling Application Fall Time (FT). Returns the time required for the signal to decrease in amplitude from 90% to 10% of the amplitude as defined by the placement of the left-most gate. The right gate defines the end of data for this measurement. Pulse Width (PW).
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Page 58: Figure 4: Gate Positioning Diagram
Pulse Profiling Application Overshoot (OvSh). Returns the difference in dB between the highest point after a rising edge and the average power of the pulse. The gates for this type of measurement must be positioned with the same restrictions as the rise time measurement. - Page 59 Pulse Profiling Application Reset. This button returns the Measurement trace to full view. This option is also available at the top of the Results window. Pointer Control. The Pointer Control mode can be set to Highlight ( Markers ( ), or Gates ( ).
- Page 60 Pulse Profiling Application Gate Color and Size. This button allows you to change the line style, color, and size of the gates. Click to button to view the Gate Definition window and make your selections. Display Font. This button allows you to change the font type, style, size, and language (script) of the trace display text.
- Page 61 Pulse Profiling Application Store/Recall This toolbar enables you to store and recall measurement states. Store Register. This button allows you to store a register. A register holds an entire state. Recall Register. This button allows you to recall a stored register. A register holds an entire state Store as Name.
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Page 62: Make A Marker Measurement
Help The Help drop down menu provides access to a help document for this application and a link to the Tektronix Web site to download user manuals. Click About to view software, firmware, and driver version information. Make a Marker Measurement Pulse width measurements are normally defined as the time between the 3 dB... -
Page 63: Make A Gated Measurement
Pulse Profiling Application The mode in the Results window toolbar will switch from highlight ( ) to Markers ( ) in the Results window. NOTE. Alternately, you can right-click on the individual marker in the Results window to select the marker type. 5. - Page 64 Pulse Profiling Application 7. Pulse width measurements require a rising and falling transition through the 3 dB points. Do the following to adjust the gates: NOTE. A complete cycle of the incoming signal must be gated for periodic measurements such as duty cycle and frequency. a.
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Page 65: Figure 5: Position Of Gates For Measurement
Pulse Profiling Application 8. Observe that the measurement result does not change as long as an entire pulse is selected. That is, if you move the left gate closer to the left edge of the display, the measurement result remains unchanged. Figure 5: Position of gates for measurement 9. -
Page 66: High Speed Logger Application
High Speed Logger Application High Speed Logger Application NOTE. This application is available for all instrument models. NOTE. Using more than one type of application at a time can result in errors. It is recommended that you use only one type of application at a time. CAUTION. -
Page 67: Menu Functions
High Speed Logger Application Menu Functions Once the instrument has been initialized, you can configure the software using the menu tabs and buttons. Following is a description of the functions. Find Sensors Click this button to tell the software to search for all connected instruments. The results will appear in the window with the instrument serial number and address. - Page 68 High Speed Logger Application The application also allows you to select the format of the files you save (tab or comma delimited). Tab delimited works well with spreadsheet applications like Microsoft Excel. RF and Microwave Power Sensors/Meters...
- Page 69 High Speed Logger Application Measurement Use the Measurement window to select measurement type, units, and frequency. In order to get accurate measurements you will need to set the frequency. If CW is selected, only the average or continuous wave power is recorded. If Peak, pulse…...
- Page 70 High Speed Logger Application Meas Start This window allows you to select when to start a measurement. The measurement process proceeds as follows: 1. Select the start criteria with one of the following settings: Threshold: Clicking start causes the application to monitor the incoming measurements (average power if CW has been selected and peak power if peak has been selected).
- Page 71 High Speed Logger Application Meas Stop Set the criteria for stopping a measurement to this window with one of the following options: Stop button: Click the stop button to stop the measurement. Time expires: Specify the time, in milliseconds, when the measurement will stop.
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Page 72: Make A Simple Measurement
High Speed Logger Application Meas Spacing The measurement spacing window allow you to define the time between measurements as follows: Fast as possible: Measures at about 350 μs per point on most computers. Some computers will be faster, some slower. However, many other factors may affect this rate. -
Page 73: Troubleshooting
High Speed Logger Application 4. Check the Append and View Data boxes if they are not already checked. 5. Select Tab Separated Data for the file delimiter. 6. Click the Measurement tab and select CW. 7. Set the units to dBm and the frequency to 1.000 GHz. 8. - Page 74 High Speed Logger Application RF and Microwave Power Sensors/Meters...
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Page 75: Index
Index Defaults Installation factory, 48 computer hardware Address, 48 measurement setup, 47 requirements, 1 changing, 17 Power Meter, 25 computer requirements, 1 how to set for instrument, 26 Display Control toolbar, 44 computer system Anti-aliasing, 15, 22 Display Options toolbar, 45 requirements, 1 Application Droop measurement, 44... - Page 76 Index Minimum loss pad, 24 Toolbar functions Pulse Profiling Recall, 20 application, 36 Recall factory setup Trigger Power Meter, 26 Name continuous, 39 Recall register, 47 how to set for instrument, 26 delay, 39 Reference level, 37 edge, 39 Register external TTL, 39 recall, 47 internal auto level, 38...