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Keysight N5225-60142 Manual
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Keysight N5225-60142 Manual

Keysight N5225-60142 Manual

2-port pna direct digital synthesizer for version 7 synthesizers - upgrade kit
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Keysight 2-Port
N5224/5/7B and N5244/5/7B Models
PNA Direct Digital Synthesizer (DDS)
For Version 7 Synthesizers - Upgrade Kit
This manual provides documentation for the following models:
To Upgrade 2-Port B models to 2-Port B models with DDS
N5224BU-2S7 (for N5224B), N5225BU-2S7 (for N5225B),
N5227BU-2S7 (for N5275B), N5244BU-2S7 (For N5244B),
N5245BU-2S7 (For N5245B), and N5247BU-2S7 (For N5247B)
Upgrade Kit Number: N5225-60142
Installation Note

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Summary of Contents for Keysight N5225-60142

  • Page 1 This manual provides documentation for the following models: To Upgrade 2-Port B models to 2-Port B models with DDS N5224BU-2S7 (for N5224B), N5225BU-2S7 (for N5225B), N5227BU-2S7 (for N5275B), N5244BU-2S7 (For N5244B), N5245BU-2S7 (For N5245B), and N5247BU-2S7 (For N5247B) Upgrade Kit Number: N5225-60142 Installation Note...

  • Page 2: Safety Notices

    DOCUMENT OR ANY INFORMATION WARNING notice until the reproduce, release, perform, CONTAINED HEREIN. SHOULD indicated conditions are fully display, or disclose commercial KEYSIGHT AND THE USER HAVE A understood and met. computer software or SEPARATE WRITTEN AGREEMENT...
  • Page 3 Keysight Add Direct Digital Synthesizer (DDS) 2-Port Upgrade Kit Upgrade Kit Numbers: N5225-60142 Installation Note Description of this Upgrade This upgrade adds direct digital synthesis capability to your microwave network analyzer. This is done by removing the existing frequency reference, 13.5 GHz synthesizer boards (x2), and installing a new direct digital synthesizer...

  • Page 4: Contacting Keysight

    By internet or phone, get assistance with all your test and measurement needs. Installing this upgrade kit requires special skills and experience. If you think you may not be qualified to do the work, or need advice, contact Keysight. Contacting Keysight...

  • Page 5: Getting Prepared

    Downloading the Online PNA Service Guide To view the Service Guide for your PNA model number, use the following steps: 1. Go to www.keysight.com. 2. In the Search box, enter the model number of the analyzer (Ex: N5247B) and click Search.
  • Page 6 For information, click on the Chapter 1 bookmark, "Electrostatic Discharge Protection" in the PDF of your instrument’s Service Guide on www.keysight.com ESD Equipment Required for the Installation Description Keysight Part Number ESD grounding wrist strap 9300-1367 5-ft grounding cord for wrist strap 9300-0980...

  • Page 7: Tools Required For The Installation

    9 mm nutsetter or open end torque wrench set to 21 in-lb. About Installing the Upgrade Products affected All N5224/5/7B, N5244/5/7B 2-port microwave network analyzers Installation to be performed by Keysight service center, personnel qualified by Keysight, or customer Estimated installation time 3 hours Estimated adjustment time 3 hours Estimated full instrument calibration time 4.5 hours...
  • Page 8 It is normal for some of these items to remain unused after the upgrade is completed. Table 1 Contents of Upgrade Kit N5225-60142 Option 2S7 Description Part Number Installation Note (this document)
  • Page 9 Description of this Upgrade Installation Procedure for the Upgrade Installation Procedure for the Upgrade The network analyzer must be in proper working condition prior to installing this option. Any necessary repairs must be made before proceeding with this installation. This installation requires the removal of the analyzer’s protective outer covers.

  • Page 10: Overview Of The Installation Procedure

    Description of this Upgrade Overview of the Installation Procedure Overview of the Installation Procedure The network analyzer must be in proper working condition prior to installing this option. Any necessary repairs must be made before proceeding with this installation. This installation requires the removal of the analyzer’s protective outer covers.
  • Page 11 Description of this Upgrade Step 1. Verify PNA and Erase Flash Step 1. Verify PNA and Erase Flash This section verifies the PNA boots normally and if OK, deletes the flash in preparation for installing and calibrating the new synthesizer assembly. Refer Figure 1 on page 1.
  • Page 12 Description of this Upgrade Step 1. Verify PNA and Erase Flash Figure 1 Open SCPI Parser Console Installation Note N5225-90142...
  • Page 13 9. If you repeat steps and 6. and still have data being returned, then refer to “Contacting Keysight” on page Step 2. Remove the Inner and Outer covers For instructions, click the Chapter 7 bookmark “Removing the Covers” in the PDF Service Guide Step 3.
  • Page 14 Description of this Upgrade Step 3. Remove Some Cables (All Models) and Some Bottom Assemblies (Options 405, 420, and 425 Only) Step 3a. Remove Some Cables (All Models) 1. Place the analyzer bottom-side up on a flat surface. 2. Remove the following cables. To see an image showing the location of these cables, click the Chapter 6 bookmark “Bottom RF Cables, Standard 2-Port Configuration [for your option]”...
  • Page 15 Description of this Upgrade Step 3. Remove Some Cables (All Models) and Some Bottom Assemblies (Options 405, 420, and 425 Only) B. Remove Some LFE Board Flexible Cables Remove the cables as shown in Figure 2 on page 15. The top-side end of the cables is removed later.
  • Page 16 Description of this Upgrade Step 3. Remove Some Cables (All Models) and Some Bottom Assemblies (Options 405, 420, and 425 Only) C. Install Some *New* LFE Cables Reinstall the following LFE cables as shown in Figure 3 on page 16. The top-side end of the cables is installed later.
  • Page 17 Description of this Upgrade Step 4. Remove Some Top Cables Step 4. Remove Some Top Cables Carefully turn the PNA so it is top-side up for this step. Refer to your Service Guide’s "Removing and Replacing the A4–17 Boards" section. Set aside all hardware for reuse. Exceptions (See also, note below): IMPORTANT! A4 13.5 GHz source 1 synthesizer, A14 frequency reference, A15 13.5 GHz (LO) synthesizer, and A17 13.5 GHz source 2 synthesizer...
  • Page 18 Description of this Upgrade Step 4. Remove Some Top Cables All models with Options 405, 420, 425 only: The following cables had the bottom cable–end was removed previously in “Step 3b. Remove/Reinstall Some Bottom Assemblies and Old/New Cables (LFE Models, With Options 205, and 220”...
  • Page 19 Description of this Upgrade Step 5. Remove the Left and Right Inner Bracket’s #4 Card Guides Step 5. Remove the Left and Right Inner Bracket’s #4 Card Guides See also your Service Guide’s "Removing and Replacing the Fans" section. Set aside all hardware for reuse.
  • Page 20 Description of this Upgrade Step 6. Install the Center Bracket Step 6. Install the Center Bracket Refer to Figure 5 for this step. ① 1. Remove (x2) 0515-0372 screws from motherboard/chassis (item Discard as these will not be reused. ➁ 2.
  • Page 21 Description of this Upgrade Step 7. Reinstall Some Bottom Cables Step 7. Reinstall Some Bottom Cables Carefully turn your instrument over so the bottom side is up. Follow instructions carefully when making cable connections, especially wire harness connections. Incorrect connections can destroy components, resulting in additional customer costs.
  • Page 22 Description of this Upgrade Step 8. Reinstall the Top Assemblies A5 through A16 (Except A15 Direct Digital Synthesis (DDS) Assembly) and Cables Figure 6 Install Bottom End of Top Cable (N5240-20125) Step 8. Reinstall the Top Assemblies A5 through A16 (Except A15 Direct Digital Synthesis (DDS) Assembly) and Cables Carefully turn the PNA so it is top-side up for this step.
  • Page 23 Description of this Upgrade Step 9. Install *NEW* A15 Direct Digital Synthesizer (DDS) Assembly Step 9. Install *NEW* A15 Direct Digital Synthesizer (DDS) Assembly Refer to Figure Figure 8 on page 24, and Figure 10 on page 26 for this procedure.
  • Page 24 Description of this Upgrade Step 9. Install *NEW* A15 Direct Digital Synthesizer (DDS) Assembly Figure 8 A5 through A16 Boards Installed. Including A15 DDS Assembly (N5240-60102) – 4-Port is Shown (i.e., A10, A12, A13 Boards and Related Cables Are Installed in 4-Ports Only; A9 Noise Receiver Board Requires Option 029) Installation Note N5225-90142...
  • Page 25 Description of this Upgrade Step 10. Install *NEW* and Reused Direct Digital Synthesis (DDS) Assembly Cables Step 10. Install *NEW* and Reused Direct Digital Synthesis (DDS) Assembly Cables 1. Connect new LFE cables in the order shown in Figure 9 on page 25.
  • Page 26 Description of this Upgrade Step 10. Install *NEW* and Reused Direct Digital Synthesis (DDS) Assembly Cables Figure 10 Install New DDS Assembly Top Cables (N5240-20124 and N5240-20125) – Some Assemblies Missing for Clarity Torque all cables to 10 in-lbs. Installation Note N5225-90142...
  • Page 27 Description of this Upgrade Step 10. Install *NEW* and Reused Direct Digital Synthesis (DDS) Assembly Cables 3. Connect the following new and reused cables in the order listed. Refer to Figure 10 on page ① — —W69 (8120-5063) (reuse) Rear-panel REF IN to A15 DD synthesizer assembly J9 ➁...
  • Page 28 Description of this Upgrade Step 10. Install *NEW* and Reused Direct Digital Synthesis (DDS) Assembly Cables ➁ — —W99 (N5227/47B)/W129 (N5244/5B)/W149 (N5224/5B) (N5247-60023) (reuse) A24 IF multiplexer board P603 to A16 SPAM board J2 ③ — —W61 (N5242-60014) (reuse) A24 IF multiplexer board P403 to A16 SPAM board J4 ➃...
  • Page 29 Description of this Upgrade Step 11. Route Gray Cables Step 11. Route Gray Cables — Route gray cables as shown in Figure 13 Figure 14 on page Figure 13 Route Flexible Gray Cables as Indicated (1400-0249, N5242-60012, N5247-60023, N5242-60014, N5247-60024, N5242-60016, and N5240-60115) Installation Note N5225-90142...
  • Page 30 Description of this Upgrade Step 11. Route Gray Cables Figure 14 Route Flexible Gray Cables as Indicated (1400-0249, Noise Receiver Board). Applies to Option 029 Only. These cables were reinstalled in “Step 8. Reinstall the Top Assemblies A5 through A16 (Except A15 Direct Digital Synthesis (DDS) Assembly) and Cables”...
  • Page 31 2. If the instrument stabilizes without errors, continue to the next step. Else, if the unit still has initialization errors which look like problems that cannot be resolved, contact the Keysight Technologies. Refer to “Getting Assistance from Keysight” on page Step 14.
  • Page 32 Description of this Upgrade Step 16. Perform Post-Upgrade Adjustments and Calibration Step 16. Perform Post-Upgrade Adjustments and Calibration Adjustments The following adjustments must be made due to the hardware changes of the analyzer. IMPORTANT! The 10 MHz reference crystal oscillator is the most accurate after running for three hours.
  • Page 33 1. Option XSB (Source 3) is only orderable on instruments with Option 422/423. 5. In the Synthesizer Calibrations – WSynth Calibrations window: Press Program Files > Keysight > Network Analyzer > Service > WSynth In the Synthesizer to Calibrate area, only the sources that are installed are available for calibration (i.e., Source 2 and Src 3 (XSB)
  • Page 34 To store the backup data, perform these steps: — Navigate to the EEPROM Backup Utility, located at: — Windows 7 -- C:\Program Files (x86)\Keysight\Network Analyzer\Service\eebackup.exe — Windows 10 -- C:\Program Files\Keysight\Network Analyzer\Service\eebackup.exe — Run the program.
  • Page 35 Guide. If you experience difficulty with the basic functioning of the analyzer, contact Keysight. Refer to “Getting Assistance from Keysight” on page Calibration Although the analyzer functions, its performance relative to its specifications has not been verified. It is recommended that a full instrument calibration be performed using the N7840A performance test software or the instrument’s...
  • Page 36 Description of this Upgrade Step 17. Prepare the PNA for the User Installation Note N5225-90142...
  • Page 37 Installation Note Xxxxx-xxxxx...
  • Page 38 This information is subject to change without notice. © Keysight Technologies 2007-2021 Edition 1, January 14, 2021 www.keysight.com...