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Summary of Contents for AEA Technology Liberator Series
- Page 1 Operation Manual Liberator Series Bravo MRI 3000 Analyzer Testing Made Simple! Technology, Inc.
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Page 2: Proprietary Information
© 2021 by AEA Technology, Inc. All rights reserved. This document and all software or firmware designed by AEA Technology, Inc. is copyrighted and may not be copied or altered in any way without the written consent from AEA Technology, Inc. -
Page 3: Warning
WARNING DC Port and A/C Adapter Connecting and Operating the Analyzer while using the A/C or D/C adapters can create external sparks during connection. Connecting or use of these power sources in an explosive atmosphere is dangerous and should never be attempted. Always connect the MRI-3000 away from any explosive atmosphere. -
Page 4: Battery Precautions
Use in such applications is not recommended If you have any questions concerning the use of the MRI Analyzer or other AEA Technology, Inc. instruments please contact us at:... -
Page 5: Mri-3000 Literature Introduction
MRI-3000 Literature Introduction There are two literature items available for the MRI Analyzer: Quick Start Guide is a laminated tri-fold held in the Belt Case’s inside pocket. This provides a light- weight condensed guide to calibration, measurement functions and menus Operator Manual instructional guide which has three purposes: Gives a concise description of the instrument, keypad, menus and measurement screens. -
Page 6: Table Of Contents
Table of Contents Proprietary Information ............................i WARNING ................................ii DC Port and A/C Adapter ..........................ii Coax Test Ports ............................... ii Operating Precautions ............................. ii Batteries ................................ii Cleaning ................................ii Battery Precautions ............................iii Electrostatic Discharge (ESD) Precautions ....................iii MRI-3000 Literature Introduction ......................... - Page 7 Mode Menu..............................13 On a two-port MRI-3000, you will see this screen: ................13 . 13 VNA MODE (Dual Port Models Only) ....................14 CALIBRATIONS ............................ 14 BROADBAND CAL ..........................14 SWEEP ENABLE ..........................14 GRAPH SELECT ........................... 14 GRID LINES ............................14 MORE OPTIONS ...........................
- Page 8 Limit Lines ............................. 32 S21 Operation (Two-port units only) ..................... 33 Naming Your Chart ..........................33 Saving Traces ............................34 Check Connection ..........................34 Instrument File Management ......................... 35 Warranty, Maintenance, and Troubleshooting Guides ..................37 Limited Warranty ............................37 Maintenance ..............................
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Page 9: Mri Analyzer Description
MRI Analyzer Description General The MRI-3000 analyzer measures complex impedances of electrical components. In particular, its design has been focused on making these measurements on the circuitry used in MRI machines. The results of the measurements are displayed graphically, with some numeric detail. -
Page 10: Instrument Front Panel Layout
Instrument Front Panel Layout Single Port Model Dual Port Model Instrument Top Panel Layout Screen Layouts General The MRI-3000 has two operating modes, VNA and SWR/RL. Each single-port mode has two possible screen layouts, Wide and Narrow. Dual port mode (S21) is displayed in Wide only. This gives a total of five possible screen layouts, which will be described here. - Page 11 Displayed Frequency Range: Displayed in the lower left of the screen, they indicate the frequency endpoints actually displayed on the chart. The trace actually has points not visible on the chart, and these can be viewed by enabling a cursor, and rolling the cursor past the left or right edge of the chart, which will cause the graph to scroll left or right.
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Page 12: Vna Narrow Format
VNA Narrow Format Shown above is the VNA mode presented in narrow chart format. In this mode, the chart is windowed to 152 points visible. Note that the left and right scale indicators are still present, as well as the cursor frequency, left and right scale cursor values displayed below the chart. -
Page 13: Swr/Rl Narrow Format
Impedance Angle: Labeled "PHASE", this is the relative phase shift of the impedance, in degrees. It's the same as the equivalent in VNA mode. SWR/RL Narrow Format Shown above is the SWR mode presented in narrow chart format. In this mode, the chart is windowed just as it is in VNA mode. -
Page 14: S21 Screen Format
POWER ON – Press the ON/OFF key for one second. A splash screen with AEA Technology’s logo and Version information will appear for several seconds. It will then open to the test screen in use at the time it was normally or automatically powered down. -
Page 15: Hard Power Down
The BATTERY SAVER Auto-Power Down is a normal power down which also saves all the settings. HARD POWER DOWN – Press and hold the ON/OFF key for ten seconds. This forces the MRI- 3000 to shut down and should be used if: The unit will not power down with a Normal Power Down (1 second hold of the key). -
Page 16: Freq Key
FREQ Key Press the FREQ key to set frequency range of interest. There are two types of setting screens for this operation: Press FREQ once to enter START and END FREQUENCIES. Press twice to enter CENTER FREQUENCY and SPAN. Use the left/right arrow key to navigate digit positions, the alpha-numeric keypad to enter values, and up/down arrow key to jump between upper and lower entries. - Page 17 A. Exits menus or backs up one menu level saving any changes. B. Exits the cursors as described above. C. In HELP mode, ESC closes the on-screen HELP window and returns to either the Measurement Screen or the menu or function where it was pressed to continue what you what operation you were doing when HELP was pressed.
- Page 18 The alpha-numeric keypad operates like those on smaller cell phones. Press a selected key once for entering the number and repeat the key’s presses to cycle to the character desired above that key. In an alpha entry screen the first press will present the first alpha character above the number.
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Page 19: Menus
Menus Menu Navigation Menus contain two types of lists; vertical list is the one you can see all items available and horizontal lists that only show the selected item’s options; mode or value. The other horizontal selections are hidden. Navigation is accomplished as follows: 1. -
Page 20: Keypad Beep
This allows you to adjust the color of the various items on the MRI-3000's screen. When any item on this menu is selected, you can use the (left and right arrow) buttons to select the color for that item from a palette of 16 colors. Color-settable items are: TRACE A –... -
Page 21: Mode Menu
SET DATE & TIME screen Selecting DATE/TIME from the Meter menu will bring up the date/time set screen: keys to select the field to be changed. Use UP/DOWN arrow keys to modify. Press ENTER to exit and save changes in Date/Time Menu. Exit will go up a level to Meter Menu, press ESC to exit to Measurement Screen. -
Page 22: Vna Mode (Dual Port Models Only)
The items on this menu are: VNA MODE (Dual Port Models Only) This option will allow you to select the operating mode for the VNA function of the instrument. There are two possible selections (use the button ): S11 - This enables single-port impedance analysis, including impedance magnitude and impedance phase. -
Page 23: More Options
MORE OPTIONS Selecting this menu item, will take you to sub-menu to set other, less frequently used settings. (See next section: OTHER OPTIONS, below) OTHER OPTIONS Menu This menu is accessed via the MRI-3000's OPTIONS menu. It allows the setting of some of the less frequently used settings. -
Page 24: Data Recall
DATA RECALL Press ENTER to open a list of saved test results to select and recall. SAVE SETTINGS Press ENTER to save the instruments current operating state. You will be prompted to enter a name for the .SET file. RECALL SETTINGS Press ENTER to open a list of saved instrument setting files. -
Page 25: Measurement Screens
Measurement Screens In general all the measurement screens provide either a graphic representation of the measurement parameter(s) selected (Sweep mode) or a fast changing digital readout (CW mode). The support screens are designed for entering various settings or saving and recalling test results from the memory. -
Page 26: Return Loss Screen
Return Loss Screen SWR/RL key switches between SWR and Return Loss Scale key cycles Return Loss scale through preset ranges CW – Continuous Wave Screen Sweep/CW key opens this mode Center Frequency is at the top Use FREQ screen to change frequency UP/DOWN arrow keys scroll through 2 pages of results Press Sweep/CW key again to exit to last testing mode (Sweep mode will be restored upon exiting). -
Page 27: Calibration Sequence Screens
The Cable Null function opens a series of screens to “Calibrate” the attached test lead, antenna feed line and/or any adapters along with the instrument to remove them from the measurements. It can also be used to perform an instrument only calibration by attaching the required terminators directly to the instrument’s N connector. -
Page 28: S21 Vna Screen (Two-Port Model Only)
The VNA screen (shown here in narrow format) will allow you to directly view impedance magnitude and phase characteristics of virtually any single-ended device. Keep in mind that the instrument must be calibrated (either broadband or frequency-specific) as when doing RL and SWR measurements. The calibration process is identical, and occurs whenever center frequency or span is changed (when in frequency specific mode). -
Page 29: Broadband Calibration Process
Broadband is a calibration that is done once, using the Site Analyzer’s entire frequency range 100KHz to 450MHz and saved for use with any shorter frequency ranges selected for use. The advantage of using Broadband Calibration will be that recalibrating the instrument for every change of frequency will not be needed. - Page 30 jump to Step 4. If required, use the UP Arrow to select (highlight) CALIBRATIONS: then press the LEFT/RIGHT arrows as need to select FREQUENCY SPECIFIC Press ESC to save and exit Mode Menu Press the “Freq” key once to select by Start and End frequencies and twice to select by Center Frequency and Span.
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Page 31: Swr (Standing Wave Ratio A.k.a. Voltage Standing Wave Ratio-Vswr)
SWR (Standing Wave Ratio a.k.a. Voltage Standing Wave Ratio-VSWR) SWR is a measurement of impedance matching of loads to the characteristic impedance of a transmission line or waveguide. Impedance mismatches result in standing waves along the transmission line. SWR is defined as the partial standing waves’ amplitude at an antinode (maximum) to the amplitude at a node (minimum) along the transmission path. -
Page 32: Swr And Return Loss Measurement Steps
The above equation will return a positive dB value. Historically, most instruments are designed to show Return Loss as a negative dB value. This requires taking the ratio of reflected to incident power as in the modified equation shown below: RL’(dB) will be a negative value. -
Page 33: Mri Pc Vision
MRI PC Vision™ Abstract MRI PC Vision™ is the companion windows application for your Bravo MRI 3000 Analyzer. Besides allowing for remote operation of your MRI-3000, it also contains tools and utilities to help you get the most out of your instrument. Installing MRI PC Vision MRI PC Vision™... - Page 34 Under certain circumstances, the MRI PC Vision application may not be successful in connecting to your instrument. This is most likely to happen when there are USB to RS232 adapter cables, or similar devices already attached to your PC. In this case, the status indicator will remain red: If this occurs, you may have to attach the instrument manually.
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Page 35: Display Screen
Display Screen There are two main areas of the MRI PC Vision display: The control/settings area, and the measurement/display areas. The control/settings area fills the upper portion of the screen. This is where you specify test conditions such as frequency and span, and test options such as sweep speed and Limit-line options. The measurement/display area takes up the rest of the screen. -
Page 36: S11 Single-Port Operation
With the frequency information entered, and the sweep rate selected, it’s time to calibrate the instrument. To do this, requires three reference standards: An OPEN, a SHORT, and a reference LOAD. For most applications, especially for frequencies of less than 200MHz or so, the OPEN is not too critical and many users do not use anything for this. - Page 37 (if calibration has not already been completed you will be prompted to do so) ...and the measured results of the UUT (unit under test) will be drawn on the graphs as shown here:...
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Page 38: Graphs In Detail
Graphs in Detail Now that we have a ‘live’ measurement display running, we can examine the displayed charts in detail. When first started, the cursors (one on each chart) may or may not be present. The cursor will appear by clicking your mouse anywhere on the chart. The cursor will appear wherever you click on the chart. -
Page 39: Z-Plot
Another right-click on the chart will cause all charts to be displayed once again. Z-Plot Shown here is the Z-Plot, it graphs the UUT's S11 impedance, and phase angle, resistance or reactance. The scales on both sides can be adjusted for best viewing. Smith Chart The Smith Chart display allows you to easily visualize the UUT's S-Parameter characteristics. -
Page 40: Limit Lines
Limit Lines The Limit Line feature allows the user to perform quick go/no-go testing on tunable resonators. The Limit lines can be enabled independently of each other by checking the appropriate box, and entering the desired test limit as shown here: Note that limit lines only apply to the SWR and RL charts. -
Page 41: S21 Operation (Two-Port Units Only)
S21 Operation (Two-port units only) Two port or S21 operation is used if you are testing a two-port device, such as a filter or an attenuator. Calibration is also required in this case, and it is very similar to the procedure used for the single-port measurement. -
Page 42: Saving Traces
Saving Traces Now that we have ‘live’ traces on-screen, perhaps we would like to save these for future reference or further evaluation. MRI PC Vision will allow you to save live traces in AEA's PC-Vision (.pcv) format, which includes the test data used to create the trace. Alternately, a graphic if the trace may be saved in any one of a number of graphic file formats, such as .jpg, .gif, or .pdf. -
Page 43: Instrument File Management
Any of these trace files can be loaded and displayed by PC Vision. Select the files you wish to download (holding down Ctrl, Shift or both will allow you to select multiple files), and click “DOWNLOAD”. MRI PC Vision will then download your trace files to the AEA Technology folder in your Documents folder. - Page 44 You get the familiar file open dialog box: Select the file you want to display, click “Open” to view. Once downloaded from the instrument, you may decide you no longer need the trace file to remain on the instrument. From the file management window (shown earlier), select the file(s) you wish to delete, and click “Delete”.
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Page 45: Warranty, Maintenance, And Troubleshooting Guides
ANY OTHER LEGAL THEORY. Remedies for any breach of warranty, either expressed or implied, are limited to repair, replacement, or return of the instrument, at the option of AEA Technology, Inc. Any warranty is valid for the original purchaser only. -
Page 46: Cleaning
5. Inspect the battery case for any signs of out-gassing (causing white or blue/green corrosion) on the contacts or in the battery case. If any is found use a cotton tipped swab and alcohol to clean the battery compartment and contacts thoroughly and dry before installing any new cells. Instrument damage due to out-gassing cells is NOT a manufacturer defect and repair is NOT covered under our warranty. -
Page 47: Instrument Troubleshooting Guide
Instrument Troubleshooting Guide Symptom Possible Issue Corrective Action No display, but “ON” Battery voltage too low Plug in AC adapter to operate on AC power LED is lit or install fresh batteries. Display is incorrect, or Firmware has faulted Force power down by holding down the menu highlight will not ON/OFF key for 10 seconds. -
Page 48: Specifications
Appendix A Specifications MRI Analyzer Specifications 100KHz – 450MHz ( 0.1 to 10 Tesla) Frequency Range Tuning/Display Resolution 1Hz (100 KHz - 150MHz),200Hz > 150MHz Refresh Rate 2.5 times/second 210 points (Large Format) 150 points (Small Format) Frequency Display 1.6ms / data point Measurement Speed Output Power <-20 dBm @ 50 Ohms... -
Page 49: Mri Analyzer Model And Accessories
Appendix B MRI Analyzer Model and Accessories Included items Part Number MRI Analyzer 6055-1000 “N” to BNC Adapter 0070-1190 0070-1140 BNC Male Shorting Cap BNC Male 50 Ω Load 0070-1150 5001-0202CE AC Power Adapter 0070-1200 20' Power Extension Molded 0070-1208 USB Cable A-to-mini B 0070-1210 USB extension cord 15 ft... - Page 50 User’s Notes...
- Page 51 5933 Sea Lion Place, Suite 112 Carlsbad, California 92010 Tel: 1-800-258-7805 or +1-760-931-8979 Fax: +1-760-931-8969 www.aeatechnology.com...
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