Keysight 11970 Series User Manual
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Keysight 11970 Series User Manual

Harmonic mixers
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Keysight 11970 Series
Harmonic Mixers
User's Guide

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Summary of Contents for Keysight 11970 Series

  • Page 1 Keysight 11970 Series Harmonic Mixers User’s Guide...
  • Page 2 Declarations of Conformity for this product ceed beyond a CAUTION notice until the indi- the DFARS and are set forth specifically in and for other Keysight products may be down- cated conditions are fully understood and met. writing elsewhere in the EULA. Keysight shall loaded from the Web.

  • Page 3: Waste Electrical And Electronic Equipment (Weee) Directive

    To return this unwanted instrument, contact your nearest Keysight Service Center, or visit http:// about.keysight.com/en/companyinfo/environment/takeback.shtml for more information. Sales and Technical Support To contact Keysight for sales and technical support, refer to the support links on the following Keysight websites: – www.keysight.com/find/mta (product-specific information and support, software and documentation updates) –...
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  • Page 5: Table Of Contents

    ............47 Using the Mixers with the 856X Series Spectrum Analyzers ..... 48 Keysight 11970 Series User’s Guide...
  • Page 6 ............68 Keysight 11970 Series User’s Guide...

  • Page 7: List Of Figures

    ..... 54 Figure 2-20 Keysight 11970 connections to the Keysight 71000 series spectrum analyzer ..........55...
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  • Page 9: List Of Tables

    External mixing bands and associated mixing harmonics ..57 Table 2-3 Frequency ranges and corresponding harmonic numbers ..59 Keysight 11970 Series User’s Guide...
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  • Page 11 Keysight 11970 Series Harmonic Mixers User’s Guide General Information Introduction Specifications This chapter covers equipment supplied, the mixers and options that are covered in this manual, as well as specifications and environmental limitations regarding the mixer.

  • Page 12: General Information

    75 - 110 GHz range. The overall local oscillator (LO) frequency range of the 11970 Series Mixers is 3.0 to 6.1 GHz. Each of the mixers employs a different LO harmonic, and as a result has a different optimum LO range within the overall LO range of the series.

  • Page 13: 11970 Series Harmonic Mixers

    – A diplexer is required since the N9030A has a single SMA external mixer port, and the 11970 Series mixers have separate LO and IF ports. The recommended diplexer can be purchased from Keysight as p/n N9029AE13 or from OML Inc. as p/n DPL.313B. – Requires Option EXM –...

  • Page 14: Table 1-3 Table

    – Keysight E4407B spectrum analyzers require Option AYZ (LO Out and IF IN connections). – MMS analyzers using 11970 Series mixers must have a front end model 70907A, 70907B, 70909A, or 70910A, as well as a 70900A/B with firmware new enough for those modules:...

  • Page 15: Figure 1-2 Mixer Connection Kit, Option 009

    General Information LOW-LOSS SMA CABLE PART NUMBER 11970-60013 5/16-INCH OPEN-END WRENCH PART NUMBER 8710-0510 BALL DRIVER PART NUMBER 8710-0523 Figure 1-2 Mixer connection kit, Option 009 Keysight 11970 Series User’s Guide...

  • Page 16: Specifications

    Nominal values indicate expected performance or describe product performance that is not covered by the product warranty. Environmental limitations The 11970 Series mixers meet or exceed the environmental requirements of MIL-T-28800C, Type III, Class 3, Style C. Specific environmental qualifications for the mixers are as follows: Temperature, non-operating: -40°C to 75°C Temperature, operating: 0°C to 55°C...
  • Page 17 Conversion loss corrections on LO power 14.5 to 16 dBm Input SWR <2.2:1 (nominal) [a] Calibration accuracy is defined as the difference between the actual mixer conversion loss and the calibration values provided with the mixer. Keysight 11970 Series User’s Guide...
  • Page 18 [a] When used with the N9030A, harmonic 6 and harmonic 8 used are dependent on the start and stop frequencies. Harmonic 6 is used from 26.5 to 30.45 GHz and harmonic 8 is used above 30.45 GHz. [b] Calibration accuracy is defined as the difference between the actual mixer conversion loss and the calibration values provided with the mixer. Keysight 11970 Series User’s Guide...
  • Page 19 [a] When used with the N9030A, harmonic 8 and harmonic 10 used are dependent on the start and stop frequencies. Harmonic 8 is used from 33 to 40 GHz and harmonic 10 is used above 40 GHz. [b] Calibration accuracy is defined as the difference between the actual mixer conversion loss and the calibration values provided with the mixer. Keysight 11970 Series User’s Guide...
  • Page 20 Conversion loss corrections on LO power 14.5 to 16 dBm Input SWR <2.2:1 (nominal) [a] Calibration accuracy is defined as the difference between the actual mixer conversion loss and the calibration values provided with the mixer. Keysight 11970 Series User’s Guide...
  • Page 21 50 to 66 GHz and harmonic 14 is used above 66 GHz. [b] Calibration accuracy is defined as the difference between the actual mixer conversion loss and the calibration values provided with the mixer. Keysight 11970 Series User’s Guide...
  • Page 22 Conversion loss corrections on LO power 14.5 to 16 dBm Input SWR <2.6:1 (nominal) [a] Calibration accuracy is defined as the difference between the actual mixer conversion loss and the calibration values provided with the mixer. Keysight 11970 Series User’s Guide...

  • Page 23: Figure 1-3 Dimensions

    UG-387/U-M 0.14 kg 36 mm 51 mm 76 mm 11970W WR-10 0.32 lb 1.4 in 2.0 in 3.0 in [a] Waveguide attachment screws enter blind holes in the flanges of the mixers. Figure 1-3 Dimensions Keysight 11970 Series User’s Guide...
  • Page 24 General Information THIS PAGE HAS BEEN INTENTIONALLY LEFT BLANK. Keysight 11970 Series User’s Guide...

  • Page 25: Operation

    Keysight 11970 Series Harmonic Mixers User’s Guide Operation Introduction Getting Started Using the Mixers with the E4407B Spectrum Analyzer (Option AYZ) Using the Mixers with the E4440A, E4446A, or E4448A PSA Series Spectrum Analyzer (Option AYZ) Using the 11970A, Q, U, V, and W Mixers with the N9030A and N9010A X- Series Signal...

  • Page 26: Introduction

    The foam keeps small objects from entering the waveguide. Avoiding mechanical damage Leave the waveguide flange cap on whenever the mixer is not connected to a device under test. This protects the flange mating surface from scratches, which can degrade the mixer's performance. Keysight 11970 Series User’s Guide...

  • Page 27: Getting Started

    Operation Getting Started The 11970 series of millimeter wave mixers have no bias or back-short adjustments. 11970 Mixers require an LO power of 14 to 18 dBm at the LO input. Mixer connections This chapter contains connection and operation information listed by Spectrum Analyzer model number.

  • Page 28: Using The Mixers With The E4407B Spectrum Analyzer (Option Ayz)

    2-1. Figure 2-1 Harmonic mixer setup (E4407B) Keysight 11970-60013 SMA type cables should be used to connect the mixer IF and LO ports to NOTE the analyzer. Do not over-tighten the cables. The maximum torque should not exceed 112 N-cm (10 in-lb.)
  • Page 29 – Data from the calibration sheet supplied with your mixer. The 11970A, Q, and V band mixers calibrated after May 2011 have two calibration sheets. Use the sheet that contains the text "Not for use with the Keysight X-Series Signal Analyzers’. An example of the calibration sheet is shown in Figure 2-24.

  • Page 30: Figure 2-2 Multiple Signal Responses (E4407B)

    Input Mixer, Signal Ident (On) and note that now only the valid response (35 GHz) remains. Press Peak Search to place a marker on the remaining response. The signal-identification routine can introduce slight amplitude errors which is indicated by the message Signal Ident On, Amptd Uncal. Refer to Figure 2-3. Keysight 11970 Series User’s Guide...

  • Page 31: Figure 2-3 Valid Signal Responses (E4407B)

    After identifying a signal of interest, press Signal Ident (Off) before making final amplitude measurements. Note that Image Suppress should only be used to identify the fundamental signal and not for accurate amplitude measurements. Figure 2-3 Valid signal responses (E4407B) Keysight 11970 Series User’s Guide...

  • Page 32: Using The Mixers With The E4440A, E4446A, Or E4448A Psa Series Spectrum Analyzer (Option Ayz)

    Figure 2-4 Harmonic mixer setup (E4440A/ E4446A/ E4448A) Keysight 11970-60013 SMA type cables should be used to connect the mixer IF and LO ports to NOTE the analyzer. Do not over-tighten the cables. The maximum torque should not exceed 112 N-cm (10 in-lb.).
  • Page 33 – Data from the calibration sheet supplied with your mixer. The 11970A, Q, and V band mixers calibrated after May 2011 have two calibration sheets. Use the sheet that contains the text ‘Not for use with the Keysight X-Series Signal Analyzers’. An example of the calibration sheet is shown in Figure 2-24.

  • Page 34: Figure 2-5 Multiple Signal Responses (E4440A/ E4446A/ E4448A)

    (instrument preset selects the Image Suppress signal identification mode.) Press Input/Output, Input Mixer, Signal Ident (On) and note that now only the valid response (35 GHz) remains. Press Peak Search to place a marker on the remaining response. Refer to Figure 2-6. Keysight 11970 Series User’s Guide...

  • Page 35: Figure 2-6 Valid Signal Responses (E4440A/ E4446A/ E4448A)

    After identifying a signal of interest, press Signal Ident (Off) before making final amplitude measurements. Note that Image Suppress should only be used to identify the fundamental signal and not for accurate amplitude measurements. Figure 2-6 Valid signal responses (E4440A/ E4446A/ E4448A) Keysight 11970 Series User’s Guide...

  • Page 36: Using The 11970A, Q, U, V, And W Mixers With The N9030A And N9010A X-Series Signal Analyzers (Option Exm)

    3 Select external mixing by pressing Input/Output, External Mixer, External Mixer, External Mixer Setup. 4 The default is 11970A. To select Q, U, V or W bands, press Mixer Presets, Keysight 11970, then select the appropriate key corresponding to 11970 frequency band.

  • Page 37: Amplitude Calibration

    – The mixer ships with a printed copy of the conversion loss data. Find the printed copy conversion loss data that has the text "For Use with Keysight X-Series analyzers only". The conversion loss data will need to be manually entered as frequency and amplitude pairs into the analyzer corrections file.
  • Page 38 The external diplexer has 1dB of loss at 300 MHz. The cable that connects the diplexer to the signal analyzer has loss depending on cable length. 1 Press Input/Output, External Mixer, Cable IF Loss and enter the cable loss plus the 1dB diplexer loss. Keysight 11970 Series User’s Guide...

  • Page 39: Signal Id

    Operation Manually entering conversion loss data 1 Locate the printed copy of the conversion loss data that has the text "For use with Keysight X-Series analyzers only". Insert the CD provided with the mixer into a PC and navigate to the 70xxxxxx_X.pdf file. The file contains tabular and graphic conversion loss data.

  • Page 40: Image Shift

    Signal ID and initiate two single sweeps. The results of the first sweep after Signal ID is turned on are available in Trace 1. The next sweep is shifted and the data from that sweep is available in Trace 2. The unshifted and shifted data can then be compared. Keysight 11970 Series User’s Guide...

  • Page 41: Using The 11970A, Q, U, V, And W Mixers With The N9040B X- Series Signal Analyzer (Option Exm)

    5 Tune the analyzer to the input frequency by pressing FREQ hardkey and enter a center frequency, or start and stop frequencies. To enter a center frequency tap Center Frequency twice and enter a value. Keysight 11970 Series User’s Guide...

  • Page 42: Figure 2-9 Multiple Signal Responses (N9040B)

    7 Many responses may appear on screen. Turn on Signal ID function to identify true signals from images and multiples. Press Input/Output hardkey. Tap Signal ID to toggle Signal ID on. Tap Signal ID Mode and select Image Suppress. See “Signal ID” on page 46 for more information. Keysight 11970 Series User’s Guide...

  • Page 43: Amplitude Calibration

    Therefore assure that only the correction file required for the measurement is turned on, and turn off all other corrections. Keysight 11970 Series User’s Guide...

  • Page 44: Loading Conversion Loss Data For The Signal Analyzer

    – The mixer ships with a printed copy of the conversion loss data. Find the printed copy conversion loss data that has the text "For Use with Keysight X-Series analyzers only". The conversion loss data will need to be manually entered as frequency and amplitude pairs into the analyzer corrections file.

  • Page 45: Figure 2-11 Loading The Conversion Loss Files To The Corrections Array

    The external diplexer has 1dB of loss at 300 MHz. The cable that connects the diplexer to the signal analyzer has loss depending on cable length. 1 Press Input/Output hardkey and tap Cable IF Loss twice then enter the cable loss plus the 1 dB diplexer loss. Keysight 11970 Series User’s Guide...

  • Page 46: Signal Id

    Operation Manually entering conversion loss data 1 Locate the printed copy of the conversion loss data that has the text "For use with Keysight X-Series analyzers only". Insert the CD provided with the mixer into a PC and navigate to the 70xxxxxx_X.pdf file. The file contains tabular and graphic conversion loss data.

  • Page 47: Image Shift

    Signal ID and initiate two single sweeps. The results of the first sweep after Signal ID is turned on are available in Trace 1. The next sweep is shifted and the data from that sweep is available in Trace 2. The unshifted and shifted data can then be compared. Keysight 11970 Series User’s Guide...

  • Page 48: Using The Mixers With The 856X Series Spectrum Analyzers

    Good-quality shielded SMA-type cables should be used to connect the mixer to the spectrum NOTE analyzer to ensure that no signal attenuation occurs. Keysight 11970-60013 SMA-type cables may be used. Do not over-tighten the cables; the maximum torque should not exceed 112 N-cm (10 in-lb.).
  • Page 49 2-13. The LOCK HARMONIC function “locks” the spectrum analyzer in that band, ensuring that the spectrum analyzer sweeps only the chosen band. LOCK ON OFF is automatically set to ON when FULL BAND is pressed. Keysight 11970 Series User’s Guide...

  • Page 50: Save The Average Conversion-Loss Value

    The 11970A, Q, and V band mixers calibrated after May 2011 have two calibration sheets. Use the sheet that contains the text "Not for use with the Keysight X-Series signal analyzers". The U-band mixer used for this example had an average conversion loss of 23.5...

  • Page 51: Signal Identification

    These responses come in pairs, where the members of the valid pair are spaced 621.4 MHz apart (see Figure 2-15) and the right-most member for the pair is the correct response (for this analyzer, the left member of a pair is not valid). Keysight 11970 Series User’s Guide...

  • Page 52: Identify Signals With The Frequency-Shift Method

    2-16). Therefore, when viewing the display, on alternate sweeps the signal will appear, then not appear, at the frequency of interest. The correct signal produced by the selected harmonic will be shifted in a vertical direction only, as shown in Figure 2-17. Keysight 11970 Series User’s Guide...

  • Page 53: Identify Signals In Wide Frequency Spans

    2-18. The true signal frequency is given with an identifier that the marker resides on an image. If the marker is placed on a true signal, and SIG ID AT MKR is activated, the signal frequency will appear without the IMAGE notation, as shown in Figure 2-19. Keysight 11970 Series User’s Guide...

  • Page 54: Figure 2-18 Sig Id At Mkr Performed On An Image Signal

    9 To exit the external mixer mode, press AUX CTRL, then INTERNAL MIXER. Figure 2-18 SIG ID AT MKR performed on an image signal Figure 2-19 SIG ID AT MKR performed on a true signal Keysight 11970 Series User’s Guide...

  • Page 55: Using The Mixers With Mms Analyzers

    Operation Using the Mixers with MMS Analyzers Preliminary operation This section provides information for the Keysight 70907A (or B), however the operation of the NOTE Keysight 70909A and Keysight 70910A is similar. Minor differences may be noted, but the necessary deviations from these exact instructions will be obvious.

  • Page 56: Table 1-7 Table

    The 11970A, Q, and V band mixers calibrated after May 2011 have two calibration sheets. Use the sheet that contains the text "Not for use with the Keysight X-Series signal analyzers". Use the following key sequence to enter the conversion loss values:...

  • Page 57: Table

    18.0 to 26.5 26.5 to 40.0 33.0 to 50.0 40.0 to 60.0 50.0 to 75.0 60.0 to 90.0 75.0 to 110.0 90.0 to 140.0 110.0 to 170.0 140.0 to 220.0 170.0 to 260.0 220.0 to 330.0 Keysight 11970 Series User’s Guide...
  • Page 58 See “IMAGE N START” definition above. Default is 40. Table 2-3 for available frequency ranges and related harmonic numbers. Use the IMAGE N NOTE START and IMAGE N STOP softkeys for the image identification only. Keysight 11970 Series User’s Guide...

  • Page 59: Conversion Loss Versus Frequency Correction

    Y: 170.0 - 260.0 J: 220.0 - 330.0 Conversion loss versus frequency correction The Keysight 71000 Series Spectrum Analyzers with the Keysight 70907A (or B) External Mixer Interface Module installed has the amplitude-correction function (AMPCOR) available by remote programming. Use AMPCOR to compensate for the Keysight 11970 Series frequency-dependent conversion-loss variations.
  • Page 60 OUTPUT 718; “CNVLOSS 0DB;” Then build the AMPCOR table with frequency conversion loss pairs. The following example program line shows three pairs of frequency conversion loss values for a typical Keysight 11970V. OUTPUT 718; “AMPCOR 50GHZ, 49.6DB, 51GHZ, 49.1DB, 52GHZ,48.6DB;”...
  • Page 61 Point 2 52.00000000E+9,46.7 Point 3 53.00000000E+9,47.2 Point 4 Point 5 Point 6 Point 7 Point 8 Point 9 Point 10 Point 11 For further information, consult the Keysight 70900B Local-Oscillator-Controlled Modules NOTE Programming Manual, part number 70900-90284. Keysight 11970 Series User’s Guide...

  • Page 62: Using The Mixers With The 8566B Spectrum Analyzer

    Do not over-tighten the cables; the maximum torque should not exceed 112 N-cm (10 in-lb.). Figure 2-21 External mixer connection Before connecting the Keysight 11975A Amplifier, set the ALC switch to ON. Failure to do so can CAUTION damage the mixer. 2 Power up the spectrum analyzer and then the amplifier.

  • Page 63: Amplitude Calibration

    (except for use of the RF input attenuator and preselector). Amplitude calibration Procedure Each 11970 series harmonic mixer is characterized at the factory and comes with a calibration chart (See Figure 2-24). The horizontal axis of the chart gives the frequency range of the mixer and the two vertical axis scales are calibrated in conversion loss and in reference level offset.

  • Page 64: Signal Identification

    A failed signal identification is indicated by the signal disappearing or shifting in frequency. Keysight 11970 Series User’s Guide...
  • Page 65 Operation Figure 2-23 Calibration sheet 1 Keysight 11970 Series User’s Guide...
  • Page 66 Operation Figure 2-24 Calibration sheet 2 Keysight 11970 Series User’s Guide...

  • Page 67: Service

    Keysight 11970 Series Harmonic Mixers User’s Guide Service Maintenance This chapter covers care and maintenance of the mixer...

  • Page 68: Maintenance

    Service Maintenance The only maintenance required for the 11970 Series Mixers is preventive maintenance. When you are not using your mixer, cover its waveguide input with its waveguide cap. Also, though the 11970 Mixers can absorb more punishment than is normal for such devices, you should avoid subjecting them to unnecessary shock or vibration.
  • Page 69 This information is subject to change without notice. Always refer to the Keysight website for the latest revision. © Keysight Technologies 2011 - 2019 Edition 3, October 31, 2019 Printed in Malaysia *11970-90040* 11970-90040 www.keysight.com...

This manual is also suitable for:

11970k11970a11970q11970u11970v11970w

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