====================================================================== Keysight N7840A PNA PNA-L PNA-X Series Calibration Application Version E.23.01 Installation and Setup Instructions Copyright (c) 2001-2020 Keysight Technologies, Inc. This readme.txt file updated: Jun 2020 SUPPORTED MODELS: - N5230A - N5230C - N5241A - N5242A - N5244A - N5245A - N5247A - N5221A - N5222A - N5224A - N5225A - N5227A - N5239A - N5231A - N5232A - N5234A - N5235A - N5241AS - N5242AS - N5244AS - N5245AS - N5247AS - N5221AS - N5222AS - N5224AS - N5225AS - N5227AS - N5239AS - N5231AS - N5232AS - N5234AS - N5235AS - N5242AH85 - N5249A - N5249AS - N5241B - N5242B - N5244B - N5245B - N5247B - N5249B - N5221B - N5222B - N5224B - N5225B - N5227B - N5239B - N5231B - N5232B - N5234B - N5235B - N5290A - N5291A SUPPORTED OPTIONS: Please refer to the help documentations for all the supported options. ====================================================================== ====================================================================== Table of contents ====================================================================== 1. Minimum System Requirements 2. Installation or Upgrade 3. Uninstall 4. Running the Software 5. Getting Started 6. Usage Notes 7. Known Issues 8. Release History ====================================================================== 1. MINIMUM SYSTEM REQUIREMENTS ====================================================================== The minimum system requirements for this version of N7840A are the same as the system requirements for TME. See the TME Readme.txt for details. - Additional software: - .NET Framework 4.6.1 ====================================================================== 2. INSTALLATION/UPGRADE INSTRUCTIONS ====================================================================== NOTE: Installation packages available for download at: http://cal.software.keysight.com - Close all applications - Install Keysight N7800A Test Management Environment (TME) E.03.83 or later if it is not already installed on the target PC. TME E.03.78 or later must be installed prior to installing this application. See the TME Readme.txt for TME installation instructions. - Install the Keysight N7840 PNA PNA-L PNA-X Calibration Application by double-clicking on the setup.exe previously downloaded and confirm that the box is checked for the Application. - Follow the instructions on the screen to install. NOTE: TME or this application with versions later than E.01.00 cannot be installed over any TME version prior to E.01.00. All applications, including TME, must be uninstalled before installing TME E.01.00. Please refer to the TME Readme.txt for uninstall instructions. ====================================================================== 3. UNINSTALL INSTRUCTIONS ====================================================================== NOTE: Uninstalling this application or TME will delete any data stored by this application. Please make sure that you save all needed data before uninstalling this application. Window XP: - Click on the Window Start button --> click on the Window Control Panel and select "Add/Remove Programs" option. - Select "Keysight N7840A PNA PNA-L PNA-X Calibration Application" and click on "Remove" button. Window 7: - Click on the Window Icon Start button --> click on the Control Panel and select "Programs and Features" option. - Select "Keysight N7840A PNA PNA-L PNA-X Calibration Application" and click on "Uninstall" or right click on "Uninstall" from the pop-up menu list. =================================================================== 4. GETTING STARTED ====================================================================== - There are two help systems related to the PNA application. The first one is TME Help which provides general information on installing and operating the test software in TME. The other one is PNA Help. It provides information specific to testing the PNA. - To view the TME Help when running the test software, select Help from the top menu bar then Contents. The TME Help Getting Started section will help with installation options as well as details of how to configure TME to begin testing. - To view the PNA Help when running the test software, select the "Help" button under the "Run Tests" tab. The PNA Help Getting Started will give installation and configuration instructions that are unique to this application. Also included are the details and test equipment needed to run each of the performance tests. ====================================================================== 5. RUNNING THE SOFTWARE ====================================================================== - Launch the Keysight N7800A Test Management Environment (TME) from the Start menu -> Programs -> Keysight Test Management Environment (OR) - Launch the Keysight N7800A Test Management Environment from the Keysight N7800A Test Management Environment shortcut on the Desktop. - Follow the instructions from the "Getting Started" section of the Keysight N7840A PNA-Series Network Analyzer Calibration Application Help to run the software. ====================================================================== 6. USAGE NOTES ====================================================================== * LICENSING - This application requires an instrument specific license to run any performance verification test and to view test reports. Contact Keysight Technologies to purchase a license specific to your instruments. See also the TME Help system for details on how to install and manage these licenses within TME. * INTERNATIONAL USE - This application has limited support for country specific locale. Localization affects only the format of numbers and dates and times. Refer to the TME Readme.txt for locale configuration instructions. * PNA Firmware Revision Level Requirement - For the required PNA firmware revision for each PNA model, please see detail at http://na.support.keysight.com/pna/firmware/firmware.html - If necessary, the PNA may be temporarily upgraded for testing purposes, then downgraded to a revision level required by the user. Downgrades should be kept within a major revision level. For instance, if the desired final firmware revision for a PNA is A.02.23, then the PNA should be tested at A.02.62 and then downgraded to A.02.23. It should not be tested with firmware revision A.03.53 or A.04.25. * Perform PNA Operator's Check before returning PNA to user It is strongly recommended that the PNA Operator's Check be performed before returning the instrument to a user. This provides a basic functional check to make sure that nothing has "broken" unexpectedly. * PNA Service Guides Service Guides provide PNA troubleshooting information. Copies of the Service Guides in pdf format are available on the CDROM that was shipped with the PNA and also at www.keysight.com. Search for your PNA model number and look at its library items. * General Hints - PNA screen going white (blank) during testing The PNA has a "Turn Monitor off" function under the Windows screen saver. It doesn't make any sense to enable this function because the PNA has an LCD. If the PNA screen goes white (blank) during testing, check this function first. (Hitting a key on the front panel of the PNA does NOT un-blank the screen. You must use the external keyboard or mouse.) - Serious problems with printed graphs If the graphs look good on the PC screen but have serious offset and/or line type problems when printed then check the setup for the printer driver under Windows. Use the normal Windows functions to access the printer's properties. If there is an option for "vector graphics" or "raster graphics" mode, select the raster mode. - Time-out on power sensor calibrations At the beginning of a test that uses power sensors, the software checks to see if the power sensors have been calibrated recently. If recalibration of a power sensor is necessary, the software will prompt the user to do the calibration. But if a test operator takes a long pause during a test, the power sensor calibration may become invalid. When a test operator pauses for more than 30 minutes during a test, the operator should consider calibrating the power sensors before continuing with the test. (It is recommended that long pauses not be taken during tests that use power meters.) (See the list of software defects for additional related information.) - Assembling the V8486A power sensor and the V281A adapter, see more details in N7840A help - PNA firmware revision shown on test reports The PNA firmware revision indicated on the test report indicates the firmware revision level of the PNA at the time the TME "Order Number" was created. If the PNA firmware is upgraded during testing, the change will not be reflected in the test report. - Upgraded N7840A test software and existing orders When the N7840A test software is upgraded to a new revision, no further testing should be performed on existing orders. New orders must be opened for tests performed following the upgrade. ====================================================================== 7. KNOWN ISSUES ====================================================================== - Sometimes equipment on the equipment list for a given test is not actually required for the test - TME is not able to modify the equipment required for a test based on other equipment used for the test. For instance, a microwave counter requires a different set of adapters than an RF counter. In this case the equipment list just gives all possible adapters. - If a PNA fails the frequency accuracy test at only a couple of points and a 5315xA microwave counter is being used, here is a possible work-around. - Before running the frequency accuracy test, check the "Pause on test point failure" box. Execute the test. If the test pauses, manually reset the counter by hitting the Reset/Local button twice, then continue the test. (This work-around does not cause erroneous readings. It compensates for a test software problem where the counter takes a reading before the signal is settled.) - Test software will not function with Power Meter - Power meters with firmware revision A2.03.00 (and possibly A1.03.00) will not function properly with the test software. If you have a power meter with A2.03.00 then you must upgrade to A2.08.01 or later version. - N model Power Sensor - If an N model power sensor is being used, the power meter firmware must be A2.09.01 or later (for E4419B), or A.05.02 or later (for N1912). - SCPI command error - If the test software reports any type of "SCPI command" error, re-run the test. The error is most likely caused by a problem in the PNA firmware. - Attempt to view a test report generates a message containing "Not Supported" - This type of error message shows up in a window titled "Crystal Reports Viewer." The work-around is to close down the TME and start it up again. No data will be lost. - Problem recognizing serial number over GPIB - Generally, alpha characters in test equipment serial numbers may be entered as upper or lower case. But for some instruments, upper case is required. - Restrictions on names for orders - In TME, an "order name" should not contain characters that may not be used in Windows file names. Generally avoid special characters except for dashes and underscores. - CC test will not complete successfully - If a Calibration Coefficients tests aborts unexpectedly, it may be due to a memory leak in the PNA firmware. Exit the PNA application, then restart it after waiting about ten seconds. (This is not an N7840A defect, but is included here for reference.) - Parts in place of cal kit - The "PartsInPlaceofCalKit" equipment item has not been implemented for the sub-67 GHz PNAs as it has been for the 67 GHz PNA. - Possible problem with "as received" testing - The performance tests were designed to be run after the PNA passes the pre-test to insure that basic PNA performance problems are corrected before performing the full set of tests. Some customers require an "as received" set of tests to be performed before changing the PNA in any way. There is some conflict between these two requirements. ====================================================================== 8. RELEASE HISTORY ====================================================================== - E.23.01 REVISION (June 2020) - Updated Trace Noise specifications for N5224/5B and N5244/5B to match the current data sheet. - E.23.00 REVISION (February 2020) - Added LO Cal Verification test for N5290A and N5291A. - Added Initialize Flash utility for N522xA/B, N5231/2/4/5/9A/B, and N524xA/B - E.22.00 REVISION (October 2019) - Added the support of N5245A/B and N5247A/B with option 560. - E.21.04 REVISION (August 2019) - Fixed an issue of Noise Floor driving data for N5249x with option 419 in Normal variant. - Fixed an issue of Receiver Compression test for N5230x with option 225 in Factory Recommended. - Added a note to the Help and to TME to indicate that when mapping equipment, a USB sensor is required for N5244/5/7x with option 029 in Factory Recommended variant. - E.21.03 REVISION (June 2019) - Updated DANL specifications for N5227A/B and N5247A/B to match the current data sheet. - E.21.02 REVISION (May 2019) - Fixed a database merge issue. - Fixed the issue of Dynamic Accuracy MU for N5249A/B and N5239A/B in Factory Recommended variant. - E.21.01 REVISION (May 2019) - Fixed an incompatibility issue with N7842A ENA application. - E.21.00 REVISION (May 2019) - Added support LFE options 205, 405, 220, 420 for N522xB and 205, 425 for N524xB. - Added the Channel Measure utility for N5290A and N5291A. - Added support for customer configurated N5290A and N5291A. - E.20.05 REVISION (March 2019) - Fixed CRS reports issue in Dynamic Accuracy test for N5230A/C in Factory Recommended variant. - E.20.04 REVISION (February 2019) - Fixed the issue of Noise Receiver Linearity for N5247B with option 029. - Fixed the uncertainty issue of Receiver Compression for N523x in Factory Recommended variant. - E.20.03 REVISION (January 2019) - Fixed the issue of Receiver Noise Figure test for N5244A without opt 029 in Factory Recommended variant. - Fixed the connection check issue in Receiver Noise Figure test with D module ecal. - E.20.02 REVISION (December 2018) - Fixed the issue of System Default Cal Verification test for N5225B in Factory Recommended variant. - E.20.01 REVISION (November 2018) - Fixed the issue of Receiver Compression test for N5242A and N5244A in Factory Recommended variant. - Fixed the issue of Noise Receiver Match test for N5249B in Factory Recommended variant. - Fixed the uncertainty issue of Trace Noise test in Factory Recommended variant. - Fixed the resize issue for UUT Setup Window. - E.20.00 REVISION (September 2018) - Added System Default Cal Verification to all PNA B models with option 011. - Optimized Calibration Coefficients test in Factory Recommended variant. - Added Receiver Compression At Low Frequency test for N5231/2/9A/B in both Normal and Factory Recommended variants. - Added the support for N5230A/C in Factory Recommended variant. - Added the support of N4691D, N4693D and N4694D ECals. - Updated the uncertainties of Frequency Accuracy test when using frequency counter's internal reference as 10MHz reference. - E.19.02 REVISION (July 2018) - Fixed the issue of incorrect test power in Receiver Compression test for N5230A/C with option 02x, 12x, 14x, 24x. - Fixed the issue of Receiver Compression Below 50GHz Test for N5227A with Normal variant. - Fixed the issue of Receiver Noise Figure for N5244A without option 029 in Factory Recommended variant. - Fixed the issue of Noise Receiver Match for N5249B with option 029 in Factory Recommended variant. - E.19.01 REVISION (July 2018) - Fixed Noise State Calibration Coefficient test issue with port 2 Load Match published report specification on models with option 029. - Fixed the issue in Maximum Leveled Power and Power Level Accuracy tests for N5227A and N5247A with Factory Recommended variant. - E.19.00 REVISION (June 2018) - Added the support for mmWave Network Analyzer System N5290A and N5291A - Added the support for N5245B 425 and N5247B 425 - Added Factory Recommended variant for all N524xA, N522xA, and N5231/2/4/5/9A. - E.18.04 REVISION (April 2018) - Fixed the issue of Trace Noise test for N5224B with Normal variant - Fixed the issue of Noise Receiver Match test with the sliding load calkit. - Updated the specification to match with the current datasheet at the maximum frequency on N5230A/C, N5231A/B, N5239A/B, N5234A/B, N5221A/B, N5224A/B, N5241A/B, N5249A/B, and N5244A/B. - E.18.03 REVISION (March 2018) - Fixed Receiver Compression test report issue for N523xA/B with Normal variant. - Fixed Noise Floor test issue for N5231/2/9A/B with cable 85131-60010. - E.18.02 REVISION (February 2018) - Fixed Frequency Accuracy test connection issue for 4-port N5244/5/7B with FreqCounter1 Internal Ref. - Removed Noise Source from Receiver Noise Figure test for N5244/5B with option 029. - E.18.01 REVISION (January 2018) - Updated Power Level Accuracy specifications and test power for N5224A to match the current data sheet. - Fixed report issues for Dynamic Accuracy and Noise Floor tests. - E.18.00 REVISION (October 2017) - Added support for option 205 on the N5222B and N5227B as well as option 425 on the N5242B and N5247B. - Added Factory Recommended Variant for “B” models to support enhanced power sensor configurations to reduce the number of connections required. - E.17.01 REVISION (August 2017) - Fixed SA Detector Accuracy test issue for some of A models with option 090 - E.17.00 REVISION (July 2017) - Added the support for all N52xxB models. - Added the support of 1.85 mm cable 8121-2911. - E.16.03 REVISION (January 2017) - Updated Maximum Level Power Specifications for N5234A and N5235A to match the current data sheet. - E.16.02 REVISION (June 2016) - Updated Receiver Noise Figure specification for N5241/2/9A to match the current data sheet. - Fixed Noise Receiver Compression issue for N5241/2/9A with option 029. - E.16.01 REVISION (February 2016) - Fixed Source Maximum Power test issue for N5230A/C with opt 020, 120, 025, or 125. - E.16.00 REVISION (October 2015) - Added the support for N523xA with option 090. - Fixed a report issue in Calibration Coefficents test for N5249A. - E.15.02 REVISION (August 2015) - Fixed an issue to support N5230A/C and its compatibility with old firmware versions. This issue can occur in Receiver Compression and Noise Floor. - E.15.01 REVISION (August 2015) - Fixed a PNA driver deploy issue. - Fixed Noise Receiver Linearity issue for N524xA with option 029 or H29. - E.15.00 REVISION (July 2015) - Added the support for N524xA and N522xA with option 090. - E.14.05 REVISION (February 2015) - Fixed Power Level Linearity issue for 4-port N524xA, N522xA and N523xA. - E.14.04 REVISION (August 2014) - Fixed report format issue on TME report cover page. - E.14.03 REVISION (August 2014) - Fixed Calibration Coefficients issue for N5239A, N5231A and N5232A with opt 216 with mechanical cal kit 85052B. - E.14.02 REVISION (August 2014) - Updated company name and logo from Agilent Technologies to Keysight Technologies. - E.14.01 REVISION (May 2014) - Fixed Noise Jitter issue for N5241A with opt 029 - E.14.00 REVISION (April 2014) - Added support for PNA-X models N5249A(S) - Updated Noise Floor, Trace Noise and Maximum Level Power Specifications for N5234A and N5235A to match the current data sheet - Fixed Calibration Coefficients issue for N5234A and N5235A with opt 216 or 416 running with mechanical cal kit - E.13.05 REVISION (October 2013) - Fixed Receiver Compression measurement issue for 4-port N5242A, N5242AS, N5242AH85 running with U3070A - Updated Calibration Coefficients specification for N5244A(S) and N5245A(S) to match the current data sheet - E.13.04 REVISION (April 2013) - Fixed report issues for Metrology Stability Test, Noise Receiver Linearity, and Receiver Compression Test - Fixed Dynamic Accuracy Test and Noise Receiver Linearity issues for N5242AH85 - E.13.03 REVISION (April 2013) - Fixed an issue of detecting PNA instruments with a non-standard option string - E.13.02 REVISION (April 2013) - Fixed an issue of detecting PNA with option H08 - E.13.01 REVISION (April 2013) - Fixed Receiver Compression measurement issue for 2-port PNA running with U3070A - E.13.00 REVISION (March 2013) - Added support updated Dynamic Accuracy specification for N5241A(S), N5242A(S), N5244A(S), and N5245A(S) with SN prefix break - Added support updated Maximum Leveled Power specification for N5245A(S) with SN prefix break - Added support of U3070A for N5241A(S), N5242A(S), N5244A(S), and N5245A(S) - E.12.01 REVISION (December 2012) - Fixed Noise Receive Match report issue - Fixed Maximum Leveled Power test issue for N5245AS with opt H29 and N5244/5/7A with opt 029 - Fixed Receiver Compression report issue for N5224A, N5225A, N5227A with opt 200 or 400 - E.12.00 REVISION (December 2012) - Added support for N5244A, N5245A, and N5247A with opt 029 - Added support for new models N5241AS, N5242AS, N5244AS, N5245AS, N5247AS, N5221AS, N5222AS, N5224AS, N5225AS, N5227AS, N5231AS, N5232AS, N5234AS, N5235AS, N5239AS, N5242AH85 - Fixed issue with Power Level Linearity test on N5241A or N5242A with opt 224 - E.11.02 REVISION (September 2012) - Fixed Receiver Compression measurement issue for 4-port N52221A, N5222A, N5224A, N5225A, N5231A, and N5232A - E.11.01 REVISION (August 2012) - Fixed Receiver Compression measurement issue for N52221A, N5222A, N5224A, N5225A, N5227A, and N5247A - E.11.00 REVISION (July 2012) - Added support for new PNA-L models N5239A, N5231A, N5232A, N5234A, and N5235A - E.10.02 REVISION (July 2012) - Updated Noise Floor Specification for N5230A/C to match the current data sheet - E.10.01 REVISION (May 2012) - Updated Source Match and Power Level Accuracy Specification for N5244/5A to match the current data sheet - E.10.00 REVISION (April 2012) - Added support for N5221A, N5222A, N5224A, N5225A and N5227A with metrology option 210 or 410 - Added support for the N8488A sensor - Improved Maximum Leveled Power algorithm to work better with the 8482A sensor - Fixed Receiver Compression having an unsettled power error - Fixed the font issue in Dynamic Accuracy report footnotes - Fixed Receiver Noise Figure not running on N5241A with option 029 - E.09.05 REVISION (April 2012) - Fixed an issue of some tests not running on some PNA-L test plans - E.09.04 REVISION (March 2012) - Fixed Noise Receiver Compression, Noise Receiver Load, and Receiver Noise Figure tests to return the actual results instead of Complete - E.09.03 REVISION (February 2012) - Fixed Noise Floor false failure on the first test frequency point on N5221/2A with option 217, 219, 417, or 419 - Fixed Receiver Compression not running on 4-port N5221/2A - Fixed Noise Receiver Match not running on N5241/2A with option 029 with 85052B Calibration Kit - Fixed Frequency Accuracy not running on 2-port N5247A and 2-port N5227A with 5315xA Frequency Counter - Removed Receiver Compression Test phase report for N5230A/C - Removed E9300A H25 sensor for N5242A and N5222A - E.09.02 REVISION (January 2012) - Fixed Dynamic Accuracy test not running on N5241/2A and N5230A/C with maximum frequency below 40 GHz - E.09.01 REVISION (January 2012 -- tested with firmware A.09.42.10) - Fixed Trace Noise test and Calibration Coefficients test not running with certain combinations of N5230A/C - E.09.00 REVISION (December 2011 -- tested with firmware A.09.42.10) - Added support for new models N5221A, N5222A, N5224A, N5225A, and N5227A - Modified the footnotes for Dynamic Accuracy test - E.08.03 REVISION (September 2011) - Updated Source Match and Power Level Accuracy Specification for N5244/5A to match with current data sheet - E.08.02 REVISION (September 2011) - Fixed Maximum Leveled Power test on some PNA-X models with option 224 - E.08.00 REVISION (July 2011) - Added support for new model N5247A - Added support for V8486A power sensors with option H67 - Added support to the new Receiver Overload preference setting - E.07.02 REVISION (March 2011) - Fixed Calibration Coefficients Test report issue for some options - E.07.01 REVISION (February 2010) - Fixed report format issues - Fixed Calibration Coefficients issue of test not running with certain combinations of UUT options combined with certain calibration kits - Fixed Trace Noise test on PNA-X models with option 200 or 400 combined with option 014 - Fixed several errors in help document - E.07.00 REVISION (December 2009) - Added support for new models N5241A, N5242A, N5244A, N5245A - Added new noise measurement tests for option 029 on N5241A and N5242A - Added support for N848xA power sensors and N1912A power meter for all supported PNA models - Removed the requirement for Dynamic Test Set and Compression Test Set to be periodically calibrated - E.06.01 REVISION (July 2009) - Bug fixed for reporting overall Pass/Fail Status in Receiver Compression Test for N5230A/C option 120/125, 140/145,240/245,146,246 - E.06.00 REVISION (July 2008) - Added support for new models N5230C option 020/025,120/125,140/145,220/225,240/245,146,246. - Added new manual test "Operator's Check" to identify the obvious hardware failures. - Source Maximum Power test is changed to sweep single from continuous. - Added new report licensing footer. - E.05.00 REVISION (January 2007) - Added support for new dual source PNA-L models (N5230A options 146, 246). - Added support for 13.5 GHz 4-port PNA-L (N5230A options 140, 145). - Added uncertainty for Trace Noise Test. - New report format for all PNA-L models. - E.04.01 REVISION (July 2006) - Updated the Source Max Power test which was not showing the correct test result when the outcome was INDETERMINATE. - E.04.00 REVISION (March 2006) - Added new Noise Floor test for N5230A option 42x and 52x. This new test uses the Z5623A KO1 testset. - Updated the maximum power for Source Maximum Power test. - Updated the report graphs for Source Maximum Power and Source Power Accuracy test. - Added the revised and updated help system. - Removed the support of E4412A and E4413A power sensors. The new replacement power sensors are 8481A which replaces E4412A and 8485A which replaces E4413A. The E9300A option H25 power sensor is also added as an alternate to 8485A power sensor. - E.03.03 REVISION (September 2005) - Fixed the problem with the Calibration Coefficients Test for models N5230A options 020, 025, 120 and 125. - E.03.02 REVISION (July 2005) - Added support for 85052D calibration kit for all 3.5mm connector type N5230A models which include N5230A option 02x, 12x, 24x and 22x. - Updated the maximum power for Source Maximum Power test - Frequency Accuracy Test now shows the trace window on PNA during measurement - Updated the Dynamic Accuracy Test's graph which now shows data as the percentage of specification. - Updated the Noise Floor Test's specification from 45MHz - 70 MHz (Not included) for N5230A option 22x. - Updated the driving data for Source Power Linearity test for N5230A option 52x, 12x and 24x models. - E.03.01 REVISION (July 2005) - Updated the setup package to fix problem in network install. - Fixed the problem in Calibration Coefficients Test. The test was not running for N5230A options 02x and 12x models. - E.03.00 REVISION (May 2005) - Added N5230A options 12x (13.5 GHz PNA) and 02x (6 GHz PNA). - Added support for B-Ecal Model for all PNAs. - Added support for RF Frequency Counter for all PNAs. - E.02.01 REVISION (Mar 2005) - Modified the driving data for N5230A option 24x for power. - Fixed the problem with the E.02.00 installation. - E.02.00 REVISION (Feb 2005) - Divided install package into two sub-parts: N5230A and non-N5230A. - Added support for 4-port PNA's (N5230A-24x). - E.01.00 REVISION (December 2004) - Initial release under the revised version of TME requiring licenses. - Added coverage for 2-port N5230A models (-22x, -42x, -52x) - Faster test execution