Keysight Technologies 8990B User Manual
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Keysight Technologies 8990B User Manual

Keysight Technologies 8990B User Manual

Peak power analyzer
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Test Equipment Depot - 800.517.8431 - 99 Washington Street Melrose, MA 02176 - TestEquipmentDepot.com
Keysight 8990B Peak
Power Analyzer
User's Guide

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Summary of Contents for Keysight Technologies 8990B

  • Page 1 Test Equipment Depot - 800.517.8431 - 99 Washington Street Melrose, MA 02176 - TestEquipmentDepot.com Keysight 8990B Peak Power Analyzer User’s Guide...
  • Page 2 IMPLIED, WITH REGARD TO THIS agreement and written consent from customarily provided to the public. MANUAL AND ANY INFORMATION Keysight Technologies as governed by Accordingly, Keysight provides the CONTAINED HEREIN, INCLUDING BUT United States and international Software to U.S. government NOT LIMITED TO THE IMPLIED copyright laws.

  • Page 3: Safety Symbols

    Caution, risk of danger (refer to this manual for specific Warning or Caution Alternating current (AC) information) Frame or chassis (ground) terminal Protective earth (ground) terminal Caution, risk of electric shock Earth (ground) terminal On (mains supply) Off (mains supply) Keysight 8990B User’s Guide...

  • Page 4: Safety Considerations

    – Do not substitute parts or modify the instrument. Because of the danger of introducing additional hazards, do not install substitute parts or perform any unauthorized modification to the instrument. Return the instrument to Keysight for service and repair to ensure the safety features are maintained. Keysight 8990B User’s Guide...

  • Page 5: Environmental Conditions

    Storage condition – –40 °C to 70 °C Operating condition – Up to 95% RH at 40°C (non-condensing) Humidity Storage condition – Up to 90% RH at 65°C (non-condensing) Altitude Up to 4600 m Pollution degree Keysight 8990B User’s Guide...

  • Page 6: Regulatory Markings

    Forty years is the expected useful life of the product. This symbol is a South Korean Class A EMC Declaration. This is a Class A instrument suitable for professional use and in electromagnetic environment outside of the home. Keysight 8990B User’s Guide...

  • Page 7: Waste Electrical And Electronic Equipment (Weee) Directive 2002/96/Ec

    With reference to the equipment types in the WEEE directive Annex 1, this instrument is classified as a “Monitoring and Control Instrument” product. The affixed product label is as shown below. Do not dispose in domestic household waste. Keysight 8990B User’s Guide...
  • Page 8 THIS PAGE HAS BEEN INTENTIONALLY LEFT BLANK. Keysight 8990B User’s Guide...

  • Page 9: Table Of Contents

    Introduction Overview of the 8990B ........22 Standard Shipped Items .
  • Page 10 ....... . 123 Save the multipulse measurement ......124 Keysight 8990B User’s Guide...
  • Page 11 ..........164 Restoring the 8990B to Factory Default Settings .
  • Page 12 Removing the 8990B Hard Drive (Option 801) ....191 Cleaning the 8990B ........193 Contacting Keysight .
  • Page 13 ........60 Figure 2-18 Horizontal scale on the graphical interface ..61 Keysight 8990B User’s Guide...
  • Page 14 ..... . . 85 Figure 2-52 On-screen keyboard ......85 Keysight 8990B User’s Guide...
  • Page 15 ....114 Figure 2-86 Marker view in CCDF ......115 Keysight 8990B User’s Guide...
  • Page 16 ..137 Figure 2-117 Marker labels on the graphical interface ..137 Figure 2-118 Delay Measurement button in the Marker view ..138 Keysight 8990B User’s Guide...
  • Page 17 ......159 Figure 2-149 Measurement logging buttons on the graphical interface Figure 2-150 Measurement Logging dialog ....160 Keysight 8990B User’s Guide...
  • Page 18 ........179 Figure 3-8 Turn off the 8990B ......191...
  • Page 19 .......45 Table 2-2 8990B factory default settings ....166...
  • Page 20 THIS PAGE HAS BEEN INTENTIONALLY LEFT BLANK. Keysight 8990B User’s Guide...
  • Page 21 Keysight 8990B Peak Power Analyzer User’s Guide Introduction Overview of the 8990B Standard Shipped Items Optional Items Sensor Compatibility Probe Compatibility Front Panel Outlook Side Panel Outlook Rear Panel Outlook Display Outlook This chapter provides a general overview of the 8990B peak power analyzer.

  • Page 22: Introduction

    5 ns. The video inputs of the 8990B allow the simultaneous analysis of time-domain control signals. The 8990B has a frequency range of 50 MHz to 40 GHz and a dynamic power range of –35 dBm to 20 dBm, depending on the wideband power sensor used.

  • Page 23: Standard Shipped Items

    Introduction Standard Shipped Items Verify that you have received the following items with your 8990B. If anything is missing or damaged, contact the nearest Keysight Sales Office. – 8990B peak power analyzer – Power cord – Optical mouse – Mini keyboard –...

  • Page 24: Optional Items

    – N6924A additional hard drive with image – N6925A storage pouch – 8990B Programming Guide, English (Option OBF, printed) – 8990B User’s Guide, English and Programming Guide, English (Option OBK, printed) – 8990B Service Guide, English (Option OBW, printed) – 8990B User’s Guide, Japanese and Programming Guide, English (Option ABJ, printed) –...

  • Page 25: Sensor Compatibility

    Introduction Sensor Compatibility The 8990B is compatible with the Keysight N1923/4A wideband power sensor. A combination of the 8990B and the N1923/4A wideband power sensor enables the RF pulse rise or fall time measurement of up to 5 ns. The following table lists the...

  • Page 26: Probe Compatibility

    Introduction Probe Compatibility The 8990B is compatible with the Keysight N2873A passive probe which has a DC-to-500 MHz frequency range and a 10:1 attenuation factor. The 8990B video input channels are able to support passive probes with analog NOTE bandwid th of up to 1 GHz.

  • Page 27: Front Panel Outlook

    USB ports. Item Description Power on/off Press this key to turn on or off the 8990B RF input channels Connect to the RF input using the N1921/2/3/4A wideband power sensors Keysight 8990B User’s Guide...

  • Page 28: Figure 1-2 Run Control Section

    The RF level is 0 dBm at the carrier frequency. Connect to external USB devices. You can connect or disconnect the external USB USB Hosts devices without shutting down or restarting the 8990B. Figure 1-2 Run Control section This section is categorized as run controls.

  • Page 29: Figure 1-3 Horizontal Section

    Press this key to automatically scale the waveform to the optimized display Press this key to enable or disable the touch screen Press this key to clear the waveform display. When the 8990B is running in the continuous acquisition mode, this function will clear the current waveform and redraw it.

  • Page 30: Figure 1-4 Trigger Section

    Press this key to set the trigger sweep mode to either automatic or triggered. The selected sweep mode LED above this key will be illuminated. Press this key to access the trigger menu Turn this knob to configure the trigger level. Push this knob to set the trigger level to 50%. Keysight 8990B User’s Guide...

  • Page 31: Figure 1-5 Measure Section

    Turn this knob to change the position of the marker. Push this knob to select a marker or toggle between two markers. Press this key to access the marker selection dialog. Press this key to toggle between the tabs on the multi-purpose pane. Press this key to unlock the controls when in remote access mode. Keysight 8990B User’s Guide...

  • Page 32: Figure 1-6 Vertical Section

    NOTE: Vernier function (fine scaling) will only be supported in future releases. Press this key to turn the display on or off for a particular channel Turn the knob for a particular channel to configure the vertical offset of the waveform Keysight 8990B User’s Guide...

  • Page 33: Side Panel Outlook

    Item Description Keyboard PS/2 port Allows a keyboard to be plugged in to control the 8990B graphical interface. The keyboard must be plugged in prior to turning on the 8990B. Mouse PS/2 port Allows a mouse to be plugged in to control the 8990B graphical interface.
  • Page 34 Item Description Removable hard drive Allows the 8990B hard drive to be swapped with another hard drive USB ports Allows external USB devices to be connected to the 8990B. You can connect or disconnect the external USB devices without shutting down or restarting the 8990B.

  • Page 35: Rear Panel Outlook

    Used to provide internal 8990B waveforms for calibration and external triggering 10 MHz reference in Used to synchronize the 8990B horizontal timebase system to a reference clock that you provide. The clock that you provide must meet the following specifications: Level: –2 dBm to 10 dBm...
  • Page 36 Used as a trigger source for rising edge TTL level triggering only. The input specifications are as follows: Level: ±5 V Impedance: 50 Ω Trigger out Used to provide TTL compatible logic levels with an output impedance of 50 Ω for external triggering Keysight 8990B User’s Guide...

  • Page 37: Display Outlook

    Display Outlook The graphical interface provides access to the configuration and measurement features of the 8990B through an easy-to-use system of menus, toolbars, dialog boxes, icons, and buttons. You can control the graphical interface using the touch screen feature, via connected peripherals such as a mouse or a keyboard, or using the front panel interface (where applicable).

  • Page 38: Display Outlook Description

    This button will appear when remote access is in session. The front panel controls are locked when remote access is active. Click the Remote button on the screen or press the Local button on the 8990B front panel to unlock the controls. Keysight 8990B User’s Guide...

  • Page 39: Lcd Display Layout

    Introduction LCD display layout Marker A label Marker B label Trigger Channel 1 line level marker marker Channel 2 level marker Channel 3 level marker Channel 4 level marker Figure 1-10 LCD display layout Keysight 8990B User’s Guide...
  • Page 40 Introduction THIS PAGE HAS BEEN INTENTIONALLY LEFT BLANK. Keysight 8990B User’s Guide...

  • Page 41: Using The 8990B

    Keysight 8990B Peak Power Analyzer User’s Guide Using the 8990B Hiding the Side Menus and Multi-Purpose Pane Enabling or Disabling the Touch Screen Enabling or Disabling the Touch Screen Accessing the Toolbar Menus Turning Channels On or Off Accessing the Channel Setup...
  • Page 42 Logging and Saving the Measurement Data Generating and Saving a Report Secure Erase Restoring the 8990B to Factory Default Settings Configuring the Display Settings Remote Setup This chapter describes the general operation of the 8990B peak power analyzer. Keysight 8990B User’s Guide...

  • Page 43: Hiding The Side Menus And Multi-Purpose Pane

    Using the 8990B Hiding the Side Menus and Multi-Purpose Pane The 8990B allows you to hide the measurement menu, trigger menu, and multi-purpose pane. 1 Select the pin button to hide the menus or multi-purpose pane. Figure 2-1 Pin button...

  • Page 44: Enabling Or Disabling The Touch Screen

    Using the 8990B Enabling or Disabling the Touch Screen The 8990B allows you to navigate the graphical interface via touch screen. The touch screen capability is enabled by default. Use the following procedure to enable or disable the touch screen.

  • Page 45: Accessing The Toolbar Menus

    Save the current 8990B state. Refer to “Saving and Restoring 8990B States” on page 157 for more information. Restore Default Setup Reset the 8990B to the factory default settings. Refer to “Restoring the 8990B to Factory Default Settings” on page 165 for more information. Save Report...
  • Page 46 Configure the channel 1 settings. Refer to “Accessing the Channel Setup” on page 51 for more information. Channel 2... Configure the channel 2 settings. Refer to “Accessing the Channel Setup” on page 51 for more information. Keysight 8990B User’s Guide...
  • Page 47 “Measurement view” on page 131 for more information. Tools Front Panel Test... Verify the 8990B front panel keys and knobs. Refer to “Front Panel Test” page 172 for more information. Limit Test... Set the upper limit and lower limit values, and track the values. Refer to “Limit test view”...
  • Page 48 Level 1 menu Level 2 menu Description Secure Erase... Erase the 8990B setup, FDO tables, and reference memory. Refer to “Secure Erase” on page 164 for more information. Toggle 10 MHz Input Enable or disable the 10 MHz reference input for the video input channels.

  • Page 49: Turning Channels On Or Off

    Using the 8990B Turning Channels On or Off Channel 1 to channel 4 in the 8990B are color-coded in yellow, green, blue, and red respectively. Turn off the channels that you are not using to simplify the waveform display and increase the display refresh rate. The 8990B channels can be turned on from the Vertical section on the front panel or the graphical interface.
  • Page 50 3 Select the channel number button again to turn off the channel. The channels can also be turned on or off from the Channel Setup dialog. For NOTE more information on the Channel Setup dialog, refer to “Accessing the Channel Setup” on page 51. Keysight 8990B User’s Guide...

  • Page 51: Accessing The Channel Setup

    Use the following procedure to access the channel setup. 1 Select the vertical scale area for the desired channel on the graphical interface as shown in Figure 2-7. Figure 2-7 Vertical scale area on the graphical interface Keysight 8990B User’s Guide...

  • Page 52: Figure 2-8 Rf Input Channel Setup Dialog

    Vertical Scale and Offset” on page 56 for more information. Frequency Setting the frequency of the RF input channel signal. This will optimize the accuracy and minimize the measurement uncertainty, especially when making comparative measurements between signals. Keysight 8990B User’s Guide...
  • Page 53 (>) and decrement (<) buttons is set to a time scale of 1/500. Zero & Cal, Cal, and Zero Perform zeroing and calibration on the connected power sensor. Refer to “Performing Zeroing and Calibration” on page 151 for more information. Keysight 8990B User’s Guide...

  • Page 54: Figure 2-9 Video Input Channel Setup Dialog

    Set the vertical offset value for the video input channel. Refer to “Adjusting the Vertical Scale and Offset” on page 56 for more information. Coupling Select either DC or AC coupling for the video input channel signal. Keysight 8990B User’s Guide...
  • Page 55 4 After you have completed the channel setup, select the close button at top right corner of the dialog or select Close to close the Channel Setup dialog. Keysight 8990B User’s Guide...

  • Page 56: Adjusting The Vertical Scale And Offset

    Vertical section as shown in Figure 2-10. 4 Turn the vertical offset knob clockwise to move the waveform towards the top of the display or counter-clockwise to move the waveform towards the bottom of the display. Keysight 8990B User’s Guide...

  • Page 57: Figure 2-11 Vertical Scale And Reference Level Field For The Rf Input

    Select the reference level field on the Channel Setup dialog to adjust the reference level as shown in Figure 2-11. 4 For video input channels, select the vertical scale field on the Channel Setup dialog to adjust the vertical scale as shown in Figure 2-12. Keysight 8990B User’s Guide...

  • Page 58: Figure 2-12 Vertical Scale And Offset Field For The Video Input Channel 58 Figure 2-13 Vertical Scale Keypad Dialogs

    Figure 2-12. 6 The vertical scale keypad dialogs are displayed as shown in Figure 2-13. Figure 2-13 Vertical scale keypad dialogs 7 Set the desired value and select OK to confirm. Keysight 8990B User’s Guide...

  • Page 59: Figure 2-14 Vertical Scale Adjustment On The Graphical Interface

    10 The vertical offset keypad dialog for the video input channel is displayed as shown in Figure 2-16. Figure 2-16 Vertical offset keypad dialog for the video input channel 11 Set the desired value and select OK to confirm. Keysight 8990B User’s Guide...

  • Page 60: Adjusting The Horizontal Scale And Offset

    Horizontal Horizontal scale knob offset knob Figure 2-17 Horizontal scale and offset knobs in the Horizontal section 5 To set the offset to zero, push Keysight 8990B User’s Guide...

  • Page 61: Figure 2-18 Horizontal Scale On The Graphical Interface

    4 You can also adjust the horizontal scale using + and – as shown in Figure 2-18. 5 To adjust the horizontal offset, select the horizontal offset area on the graphical interface as shown in Figure 2-20. Keysight 8990B User’s Guide...

  • Page 62: Figure 2-20 Horizontal Offset On The Graphical Interface

    8 You can also adjust the horizontal offset using << and >>, or set the offset to zero using 0 as shown in Figure 2-20. The step size for the horizontal offset buttons is set to a time scale of 1/50. NOTE Keysight 8990B User’s Guide...

  • Page 63: Starting And Stopping Waveform Acquisition

    Using the 8990B Starting and Stopping Waveform Acquisition The 8990B allows you to perform a continuous or single data acquisition of the waveform from the Run Control section on the front panel or the graphical interface. Continuous waveform acquisition Use the following procedures to perform continuous waveform acquisition.

  • Page 64: Single Waveform Acquisition

    Run Control section as shown in Figure 2-24 to perform a single data acquisition of the waveform. Figure 2-24 Single waveform acquisition button in the Run Control section 2 The LED illuminates yellow when the single data acquisition is running. Keysight 8990B User’s Guide...

  • Page 65: Figure 2-25 Single Waveform Acquisition Button On The Graphical Interface

    Select the Single button on the bottom left of the graphical interface to perform a single data acquisition of the waveform as shown in Figure 2-25. Single button Figure 2-25 Single waveform acquisition button on the graphical interface Keysight 8990B User’s Guide...

  • Page 66: Clearing The Waveform Display

    Horizontal section on the front panel or the graphical interface. Use the following procedures to clear the waveform display. – When the 8990B is running in a continuous acquisition mode, the Clear Display NOTE function clears the current waveform and redraws it.

  • Page 67: Equivalent Time Sampling (Ets)

    Using the 8990B Equivalent Time Sampling (ETS) The ETS function in the 8990B is used to increase the effective sampling rate for high bandwidth repetitive signals detection. ETS is implemented by accumulating the samples of the input signals at slightly different starting points and accumulating them over several cycles to construct a complete waveform trace line.

  • Page 68: Figure 2-29 Acquisition Setup Dialog

    3 The ETS status is displayed in the Status view as shown in Figure 2-30. For more information on the Status view, refer to “Status view” on page 130. Figure 2-30 ETS status in the status view Keysight 8990B User’s Guide...
  • Page 69 Single commands or press the Single button to get the completed ETS trace. When the ETS function is acquiring data to complete the waveform trace, the ETS status is displayed as shown in Figure 2-31. Keysight 8990B User’s Guide...

  • Page 70: Figure 2-31 Ets Acquiring Data Status In The Status View

    Using the 8990B Figure 2-31 ETS acquiring data status in the status view Keysight 8990B User’s Guide...

  • Page 71: Setting The Averaging

    Averaging dialog 3 Select the Enable check box to turn on the averaging. 4 To change the average count, select the Count field on the Averaging dialog to display the count selection as shown in Figure 2-34. Keysight 8990B User’s Guide...

  • Page 72: Figure 2-34 Averaging Count Selection On The Averaging Dialog

    6 The waveform averaging status is displayed in the Status view as shown in Figure 2-35. Figure 2-35 Waveform averaging status in the status view For more information on the Status view, refer to “Status view” on page 130. NOTE Keysight 8990B User’s Guide...

  • Page 73: Enabling Autoscale

    Enabling Autoscale Autoscale feature evaluates all input signals and sets the correct conditions to best display the signals. The 8990B will automatically configure the X-axis and Y-axis values. For the X-axis, the horizontal scale is scaled with reference to the higher priority channel in the order of channel 4, 3, 2, and 1 respectively.

  • Page 74: Figure 2-38 Autoscale Notification Dialog

    4 Select Undo to undo the new settings, or select Close to close the Undo AutoScale? dialog. You can also undo autoscale from the Acquisition menu on the toolbar. The Undo AutoScale? dialog will automatically close after 5 seconds. NOTE Keysight 8990B User’s Guide...

  • Page 75: Accessing The Trigger Setup

    For the AUX trigger source, the trigger level setting is disabled. The 8990B allows you to configure the trigger settings from the Trigger section on the front panel and the Trigger menu on the graphical interface.

  • Page 76: Figure 2-41 Trigger Menu On The Graphical Interface

    Select either channel or AUX as the trigger source. The channel selection depends on the connected sensors or probes. Sweep Select either auto trigger sweep mode, or normal trigger sweep mode. Slope Set the trigger point to the positive slope or negative slope of the signal. Keysight 8990B User’s Guide...

  • Page 77: Figure 2-42 Trigger Setup Dialog

    By Event. Trigger On, T1, and T2 are only applicable when the trigger mode is Pulse Width. 4 Select Cond itioning... on the Trigger Setup dialog to display the Trigger Conditioning dialog as shown in Figure 2-43. Keysight 8990B User’s Guide...

  • Page 78: Figure 2-43 Trigger Conditioning Dialog

    Fast Trigger Fast Trigger is essentially a triggering mode where the 8990B sends out a trigger signal whenever the input RF signal crosses the trigger threshold. This is useful for application that requires fast trigger response. When Fast Trigger is disabled, the trigger out is sent only for every capture.

  • Page 79: Setting The Measurement Threshold

    For example, Pulse top: 0 dBm (1 mW) Pulse base: –69 dBm (0 W) Vertical scale: 12 dB Threshold: 50% 10Log (1 mW/0 mW) < 50% × 12 dB 0 dB < 6 dB (invalid measurement) Keysight 8990B User’s Guide...

  • Page 80: Figure 2-44 Measurement Thresholds Selection In The Setup Menu

    2 The Measurement Thresholds dialog is displayed as shown in Figure 2-45 allow you to configure the threshold settings for each channel. Figure 2-45 Measurement Thresholds dialog Source Set the measurement threshold source to channel 1, 2, 3, or 4. Keysight 8990B User’s Guide...
  • Page 81 Set the measurement threshold value in percentage. Trace Ref Lv 1 and 2 (%) Use in the calculation of transition durations and occurrences. Pulse Duration Ref Lvl (%) Allow pulse duration measurements between non-standard reference levels. Keysight 8990B User’s Guide...

  • Page 82: Saving And Loading Waveform Memories

    The 8990B allows you to save and load the waveform memories. Use the following procedures to save and load waveform memories. Saving waveform memories 1 Select File > Save Waveform... on the toolbar to save the current 8990B waveform data as a *.csv file as shown in Figure 2-46.

  • Page 83: Loading Waveform Memories

    CSV file from the Waveform Memory dialog. Use the following procedure to configure the waveform memories. 1 Select Setup > Waveform Memory on the toolbar as shown in Figure 2-48. Figure 2-48 Waveform memory selection in the Setup menu Keysight 8990B User’s Guide...

  • Page 84: Figure 2-49 Waveform Memory Dialog

    6 The Load Waveform dialog is displayed as shown in Figure 2-51. You can select the waveform memory for the waveform data file to load into by selecting the Load to memory to display the waveform memory list. Keysight 8990B User’s Guide...

  • Page 85: Figure 2-51 Load Waveform From File

    Load waveform from file 7 Select Keyboard on the Load Waveform dialog to display the on-screen keyboard as shown in Figure 2-52. This is useful when there is no keyboard connected to the 8990B. Figure 2-52 On-screen keyboard Keysight 8990B User’s Guide...

  • Page 86: Performing Waveform Math Operations

    Using the 8990B Performing Waveform Math Operations The 8990B allows you to perform math operations on a pair of channels with the same measurement unit. Use the following procedure to perform waveform math operations. 1 Select Setup > Waveform Math on the toolbar as shown in Figure 2-53.

  • Page 87: Figure 2-54 Waveform Math Dialog

    7 An example of a resultant trace waveform is displayed as shown in Figure 2-55. Figure 2-55 Resultant trace waveform of the math operation Keysight 8990B User’s Guide...

  • Page 88: Add

    – If the number of trace points is not equal, the waveform math operation will add trace points by using the PCHIP method. Figure 2-56 Keysight 8990B User’s Guide...

  • Page 89: Averaging

    Using the 8990B Averaging The 8990B allows you to perform the Averaging math operation that acquires the waveform data from several acquisitions and averages the traces. The higher the average count is, the less impact each new waveform has on the cumulative- averaged waveform.

  • Page 90: Common Mode

    – If the number of trace points is not equal, the waveform math operation will add trace points by using the PCHIP method. Figure 2-58 Common Mode Keysight 8990B User’s Guide...

  • Page 91: Divide

    – If the number of trace points is not equal, the waveform math operation will add trace points by using the PCHIP method. Figure 2-59 Divide Keysight 8990B User’s Guide...

  • Page 92: Invert

    Using the 8990B Invert The invert math operation inverts the sign of the waveform trace values, point by point. Figure 2-60 Invert Keysight 8990B User’s Guide...

  • Page 93: Magnify

    The magnify math operation allows you to magnify or reduce the source 1 waveform in vertical directions. This operation is performed on an acquired waveform. Therefore, the resolution is the same as the original acquisition no matter how large the waveform is magnified. Figure 2-61 Magnify Keysight 8990B User’s Guide...

  • Page 94: Multiply

    – If the number of trace points is not equal, the waveform math operation will add trace points by using the PCHIP method. Figure 2-62 Multiply Keysight 8990B User’s Guide...

  • Page 95: Power-Added Efficiency

    Using the 8990B Power-added efficiency The 8990B allows you to perform power-added efficiency measurements. Power-added efficiency is the measure of the power conversion efficiency of the power amplifiers. The formula for power-added efficiency is as follows: Power-added efficiency (in %)

  • Page 96: Figure 2-63 Power-Added Efficiency

    3 Compare the setting at the Waveform Math dialog with the power-added efficiency formula. Pgain = Channel 1 = P – P RFout RFin Vdc = 10 × Channel 2 Idc = (1/R) Channel 3 = 0.02 × Channel 3 Keysight 8990B User’s Guide...

  • Page 97: Figure 2-64 Power-Added Efficiency With Division Symbol (/)

    1/(constant value) in the text box. Figure 2-64 Power-added efficiency with division symbol (/) 5 The calculated power-added efficiency measurement result is in %. 6 Unselect the Display trace in percentage check box to display the result in ratio. Keysight 8990B User’s Guide...

  • Page 98: Figure 2-65 Power-Added Efficiency 2 With Multiplication Symbol (X)

    3 Compare the setting at the Waveform Math dialog with the power-added efficiency formula. Pout = Channel 1 = P RFout Pin = Channel 4 = P RFin Vdc = 10 × Channel 2 Idc = (1/R) Channel 3 = 0.02 × Channel 3 Keysight 8990B User’s Guide...

  • Page 99: Figure 2-66 Power-Added Efficiency 2 With Division Symbol (/)

    1/(constant value) in the text box. Figure 2-66 Power-added efficiency 2 with division symbol (/) 5 The calculated power-added efficiency measurement result is in %. 6 Unselect the Display trace in percentage check box to display the result in ratio. Keysight 8990B User’s Guide...
  • Page 100 Pout = Channel 1 = P RFout Pin = Channel 4 = P RFin (Vdc × Idc) = Channel 2 × 10 × 1 (Vdc × Idc) = Channel 3 × 0.02 × 1 Keysight 8990B User’s Guide...

  • Page 101: Figure 2-68 Power-Added Efficiency 3 The Division Symbol (/)

    1/(constant value) in the text box. Figure 2-68 Power-added efficiency 3 the division symbol (/) 5 The calculated power-added efficiency measurement result is in %. 6 Unselect the Display trace in percentage check box to display the result in ratio. Keysight 8990B User’s Guide...

  • Page 102: Subtract

    – If the number of trace points is not equal, the waveform math operation will add trace points by using the PCHIP method. Figure 2-69 Subtract Keysight 8990B User’s Guide...

  • Page 103: Square

    Using the 8990B Square The square math operation squares the channel waveform, point by point. Figure 2-70 Square Keysight 8990B User’s Guide...

  • Page 104: Square Root

    If any of the source 1 trace points is less than zero, it will be clipped to zero as NOTE the square root operation is not able to calculate negative values. Figure 2-71 Square root Keysight 8990B User’s Guide...

  • Page 105: Setting The Frequency-Dependent Offset (Fdo)

    When selected, frequency-dependent offset corrections are applied in addition to any correction for RF input channels frequency response. The 8990B is capable of storing 10 frequency-dependent offset tables with a maximum of 80 frequency points each. Use the following procedure to set the FDO tables.

  • Page 106: Figure 2-73 Fdo Table Dialog

    4 To display the custom FDO table data dialog, select the desired custom FDO table name, and select Ed it as shown in Figure 2-74, or double-click or double-touch the desired custom FDO table name. Figure 2-74 Edit button Keysight 8990B User’s Guide...

  • Page 107: Figure 2-75 Custom Fdo Table Data Dialog

    7 The FDO status is displayed in the Status view as shown in Figure 2-77. For more information on the Status view, refer to “Status view” on page 130. Figure 2-77 FDO status in status view Keysight 8990B User’s Guide...

  • Page 108: Magnifying A Section Of The Waveform Using Zoom

    Zoom button in the Horizontal section 2 Press in the Horizontal section to close the zoom function. Graphical interface 1 Select Acquisition > Zoom on the toolbar as shown in Figure 2-79. Figure 2-79 Zoom selection in the Acquisition menu Keysight 8990B User’s Guide...

  • Page 109: Figure 2-80 Rectangle Frame At The Main Graph Window In Zoom Display Layout

    You can also use the horizontal scale and offset knobs at the horizontal section NOTE in the front panel to adjust the scaling. The horizontal scale knob is adjustable in factors of 1, 2, and 5. Keysight 8990B User’s Guide...

  • Page 110: Figure 2-81 Measurement View In Zoom Display Layout

    4 The Measurement view on the multi-purpose pane will display the measurement results of the magnified section of the waveform as shown in Figure 2-81. Figure 2-81 Measurement view in zoom display layout 5 Select Acquisition > Zoom on the toolbar to close the Zoom function. Keysight 8990B User’s Guide...

  • Page 111: Splitting The Waveform Screen

    Using the 8990B Splitting the Waveform Screen The 8990B allows you to separate the waveform display to four split screens according to the channels. 1 Select Acquisition > Split Screen on the toolbar as shown in Figure 2-82. Figure 2-82...

  • Page 112: Figure 2-83 Split Screens

    Using the 8990B Figure 2-83 Split screens Keysight 8990B User’s Guide...

  • Page 113: Displaying The Complementary Cumulative Distribution Function (Ccdf) Information

    Use the following procedure to display the CCDF information. 1 Select Acquisition > CCDF on the toolbar as shown in Figure 2-84. Figure 2-84 CCDF selection in the Acquisition menu Keysight 8990B User’s Guide...

  • Page 114: Figure 2-85 Ccdf Graph Display In Table View

    2-85. Figure 2-85 CCDF graph display in table view 3 The Table view on the multi-purpose pane will display the CCDF statistical information, peak, average, and peak to average measurement results as shown in Figure 2-85. Keysight 8990B User’s Guide...

  • Page 115: Figure 2-86 Marker View In Ccdf

    4 The Marker view displays the X-axis and Y-axis values for the markers, and the delta values between the two markers that you enabled on the trace as shown Figure 2-86. Figure 2-86 Marker view in CCDF Keysight 8990B User’s Guide...

  • Page 116: Figure 2-87 Ccdf Menu On The Graphical Interface

    CCDF holdoff Trigger conditioning CCDF setup Figure 2-87 CCDF menu on the graphical interface Source Toggle between channel 1 or channel 4 as the CCDF source. Sweep Toggle between Free or Triggered as the CCDF sweep mode. Keysight 8990B User’s Guide...

  • Page 117: Figure 2-88 Trigger Conditioning Dialog

    Trigger Conditioning dialog 7 You can set the trigger holdoff, impedance, hysteresis, and enable or disable the fast trigger and output. For more information on the trigger conditioning dialog, refer to “Accessing the Trigger Setup” on page 75. Keysight 8990B User’s Guide...

  • Page 118: Figure 2-89 Ccdf Setup Dialog

    Select among Channel 1, Channel 4, Gaussian, Waveform, and Reference channel to be displayed on the CCDF trace. The CCDF trace can be referenced to Channel 1 or Channel 4. When Waveform is selected, the CCDF-saved waveform is recalled from memory. Keysight 8990B User’s Guide...
  • Page 119 Table Display Select between Channel 1 or Channel 4 as the channel for the CCDF information to be displayed at the Table view. 9 Select Acquisition > CCDF on the toolbar to close the CCDF function. Keysight 8990B User’s Guide...

  • Page 120: Accessing The Multipulse Mode

    1 Select Acquisition > MultiPulse on the toolbar as shown in Figure 2-90. Figure 2-90 MultiPulse selection in the Acquisition menu 2 The MultiPulse Setup dialog is displayed as shown in Figure 2-91 to allow you to configure the multipulse display. Figure 2-91 MultiPulse Setup dialog Keysight 8990B User’s Guide...

  • Page 121: Figure 2-92 Multipulse Status On The Multi-Purpose Pane

    4 The multipulse status is displayed on the multi-purpose pane as shown in Figure 2-92. Figure 2-92 Multipulse status on the multi-purpose pane 5 An example of the multipulse display is as shown in Figure 2-93. Keysight 8990B User’s Guide...

  • Page 122: Figure 2-93 Multipulse Display

    Using the 8990B Figure 2-93 Multipulse display 6 Select the arrows on the display to display the desired frames. 7 You can also display the MultiPulse Display dialog by selecting Ad vanced Settings from the Multipulse display. Keysight 8990B User’s Guide...

  • Page 123: Multipulse Measurement

    Delete > All Measurements. To remove only specific measurement function results, select the specific measurement fucntion or delta to be deleted as shown in Figure 2-95. Figure 2-95 To delete multipulse measurement results on the multi-purpose pane Keysight 8990B User’s Guide...

  • Page 124: Save The Multipulse Measurement

    6 Select Acquisition > Multipulse on the toolbar to close the multipulse function. Save the multipulse measurement The 8990B allows you to save the multipulse measurement of the acquired waveform. 1 Select Acquisition > Save measurement > Multipulse on the toolbar to save the multipulse measurement data as a *.csv file as shown in...

  • Page 125: Figure 2-97 Save Measurement

    Save measurement... > Multipulse selection in the Acquisition menu 2 The Save dialog is displayed as shown in Figure 2-98. You can select the input channel to be saved by selecting Waveform Source to display the input channel list. Keysight 8990B User’s Guide...

  • Page 126: Figure 2-98 Save Multipulse Dialog

    Using the 8990B Figure 2-98 Save multipulse dialog Keysight 8990B User’s Guide...

  • Page 127: Accessing The Display Xy Mode

    Using the 8990B Accessing the Display XY Mode The 8990B allows you to have a new visualization of trace instead of the timebase X-axis. You can use the Display XY mode to select the X-axis source and Y-axis source. Based on the selected sources, the Display XY mode will draw a scatter trace on a separate graph.

  • Page 128: Figure 2-100 Display Xy Mode

    The reference trace will be displayed in pink. 5 The DisplayXY Reference Trace dialog will be displayed as shown in Figure 2-101 when you change the Display XY mode sources with the reference trace enabled. Keysight 8990B User’s Guide...

  • Page 129: Figure 2-101 Displayxy Reference Trace Dialog

    7 Select Acquisition > Display XY on the toolbar to close the Display XY mode. For the DisplayXY mode, the marker tracking style is set to Free Float. NOTE Keysight 8990B User’s Guide...

  • Page 130: Accessing The Multi-Purpose Pane

    Log tab to access the respective views. Figure 2-102 Multi-purpose pane on the graphical interface Status view The Status view displays the general 8990B operating information, measurement acquisition functions status, and trigger settings information. The Status view displays all these information as shown in Figure 2-103.

  • Page 131: Measurement View

    Duty cycle measurement Overshoot measurement Pulse repetition interval (PRI) measurement Pulse repetition frequency (PRF) measurement Fall time measurement Rise time measurement Next measurement list Previous measurement list Figure 2-104 Measure functions menu on the graphical interface Keysight 8990B User’s Guide...

  • Page 132: Figure 2-105 Measurement Dialog

    – The minimum and maximum value is reset when there are changes to the trigger parameters or horizontal scale. Clearing the waveform display will also reset the minimum and maximum value. Figure 2-106 Measurement view on the multi-purpose pane Keysight 8990B User’s Guide...

  • Page 133: Figure 2-107 To Delete Measurement Results On The Multi-Purpose Pane

    3 To track a specific measurement, select the Measurement view area to display the Track Measurement menu and select [measurement function] to track it as shown in Figure 2-108. Figure 2-108 To track the measurement results on the multi-purpose pane Keysight 8990B User’s Guide...

  • Page 134: Figure 2-109 To View A Histogram Based On The Results On The Multi-Purpose Pane

    Histogram button and click it as shown in Figure 2-109. The histogram window is shown in Figure 2-110. Figure 2-109 To view a histogram based on the results on the multi-purpose pane Figure 2-110 Histogram window Keysight 8990B User’s Guide...

  • Page 135: Marker View

    Figure 2-111. You can also measure delay and spacing measurements using the markers. The 8990B allows you to enable two markers, A and B. Figure 2-111 Marker view on the multi-purpose pane Assign or change the channel for the markers Use the following procedure to assign or change the channel for the markers.

  • Page 136: Figure 2-113 Markers Button In The Measure Section

    5 Under Marker A and Marker B, select the respective fields to display the source selection. It will reflect all active sources on the front panel at that point. Keysight 8990B User’s Guide...

  • Page 137: Figure 2-115 Select Knob In The Measure Section

    3 To change the position of the marker, turn , or select the marker label on the graphical interface and drag the marker to the desired position as shown in Figure 2-117. Figure 2-117 Marker labels on the graphical interface Keysight 8990B User’s Guide...

  • Page 138: Figure 2-118 Delay Measurement Button In The Marker View

    Use the following procedure to set the delay measurement. 1 Select Delay Measurement in the Marker view as shown in Figure 2-118. Figure 2-118 Delay Measurement button in the Marker view 2 The Delay Measurement Setup dialog is displayed as shown in Figure 2-119. Keysight 8990B User’s Guide...
  • Page 139 Spacing measurement The spacing measurement function measures the delay in between pulses. When this function is turned on, the markers are automatically positioned on the rising edge or falling edge of the specified pulse. Keysight 8990B User’s Guide...

  • Page 140: Figure 2-122 Spacing Measurement Setup Dialog

    4 Select Apply or OK to turn on the spacing measurement function. 5 The spacing measurement results will be displayed on the Delta row in the Marker view and the Spacing Measurement button is highlighted when it is turned on as shown in Figure 2-123. Keysight 8990B User’s Guide...

  • Page 141: X-Y Position View

    Figure 2-124 X-Y Position view 1 Select Markers Search in the X-Y Position view or press Markers in the Measure section on the front panel. 2 The Markers dialog is displayed as shown in Figure 2-125. Keysight 8990B User’s Guide...

  • Page 142: Figure 2-125 Markers Dialog

    5 Select Refresh to refresh the marker position based on the X value. 6 Select Reset to reset the markers. 7 Select Clear A or Clear B in the X-Y Position view to reset the respective markers Y value search results. Figure 2-126 X-Y position search results Keysight 8990B User’s Guide...

  • Page 143: Droop Measurement View

    90% and 10% of A , and the straight-line segment fitted to the top of the pulse in determining A Droop, A Droop is the difference between A and A . It is expressed in percentage of A Keysight 8990B User’s Guide...

  • Page 144: Figure 2-128 Droop Measurement Button In The Droop Measurement View

    3 Enable the droop measurement function and select the desired RF input channel. 4 The droop measurement results will be displayed in the Droop Measurement view as shown in Figure 2-130. Figure 2-130 Droop measurement view on the multi-purpose pane Keysight 8990B User’s Guide...

  • Page 145: Limit Test View

    1 Select Tools > Limit Test... on the toolbar as shown in Figure 2-131. Figure 2-131 Limit test... selection in the Tools menu 2 The Limit Test dialog is displayed as shown in Figure 2-132. Figure 2-132 Limit Test dialog Keysight 8990B User’s Guide...
  • Page 146 – Click Create Mask to generate the shading on the graph. You should now see a shaded area in the picture display which corresponds to your input values. – Click Clear to delete the mask shading on the graph, or Save Mask to save the shading into a .mst file. Keysight 8990B User’s Guide...

  • Page 147: Figure 2-133 Limit Test Dialog - Test Target Tab

    – This tab allows you to select the specific incoming signal source that the limit test is to be run on. Only an input signal with the same unit as the source can be selected as a test NOTE target. Keysight 8990B User’s Guide...

  • Page 148: Figure 2-134 Limit Test Dialog - Run Option Tab

    – If you select Forever, the test will run continuously. – If you select Number of waveforms, the test will run for a user-defined number of waveforms. – If you select Duration, the test will run for a user-defined duration. Keysight 8990B User’s Guide...

  • Page 149: Figure 2-135 Limit Test Dialog - Action On Failure Tab

    6 Once all the above settings have been configured, click Start Test to run the limit test. 7 Click Stop to stop the limit test. 8 The limit test results are displayed in the Limit Test view as shown in Figure 2-136. Figure 2-136 Limit test results Keysight 8990B User’s Guide...

  • Page 150: Log View

    Using the 8990B Log view The log view displays the 8990B error status information as shown in Figure 2-137. Figure 2-137 Log view on the multi-purpose pane Use the following procedure to view more information on the log messages. 1 If the 8990B encounters any operation faults while performing acquisitions and measurements, error messages will be displayed.

  • Page 151: Performing Zeroing And Calibration

    8990B to make accurate power measurements. Zeroing Zeroing adjusts the 8990B for a zero power reading on each RF input channel and wideband power sensor combination. When the wideband power sensor is plugged into the 8990B, zeroing will start automatically. This can be achieved without removing the sensor from the power source.

  • Page 152: Calibration

    This can be achieved without connecting the sensor to the 1 mW power reference. The 8990B is automatically set to calibrate-on-the-fly while you are using it. The 8990B auto-calibration is enabled by default. You can enable or disable the auto-calibration process and notification, and set the auto-calibration interval from the Auto Cal dialog.

  • Page 153: Figure 2-142 Cal And Zero & Cal Buttons On The Channel Setup Dialog

    3 You can enable or disable the auto-calibration process and notification, and set the auto-calibration interval. The minimum interval is 1 minute and maximum interval is 60 minutes. 4 The 8990B also allows you to manually perform calibration of the sensor from the Channel Setup dialog as shown in Figure 2-142.

  • Page 154: Sensor Check Source

    2 The Check Source dialog is displayed as shown in Figure 2-144 to allow you to configure the check source settings. Figure 2-144 Check Source dialog 3 You can set the reference frequency and the number of calibration intervals for the sensor check source. Keysight 8990B User’s Guide...
  • Page 155 Reference Frequency The reference frequency can be set to Off, 1 kHz pulse, 50 MHz CW, or 1.05 GHz CW. Calibration Interval The calibration interval can be set to a range of 1 to 60 minutes. Keysight 8990B User’s Guide...

  • Page 156: Saving The Screen

    Using the 8990B Saving the Screen The 8990B allows you to save the graphical interface screen to an image file. Use the following procedure to save the screen. 1 Select File > Save Screen... on the toolbar to save the screen image as shown Figure 2-145.

  • Page 157: Saving And Restoring 8990B States

    The 8990B automatically retains the current state upon power cycle or in the NOTE event of interrupted power. Saving 8990B states 1 Select File > Save Current Setup... on the toolbar to save the current 8990B state to your desired directory in an XML file as shown in Figure 2-146.
  • Page 158 Using the 8990B Restoring 8990B states 1 Select File > Restore Saved Setup... on the toolbar to load a saved 8990B state from an XML file as shown in Figure 2-147. Figure 2-147 Restore Saved Setup... selection in the File menu...

  • Page 159: Logging And Saving The Measurement Data

    Using the 8990B Logging and Saving the Measurement Data The 8990B allows you to log and save the measurement results. 1 Select Acquisition > Save measurement... > Normal mode on the toolbar as shown in Figure 2-148. Figure 2-148 Save measurement > Normal mode selection in the Acquisition...

  • Page 160: Figure 2-150 Measurement Logging Dialog

    4 Select the desired measurement function check boxes to be included in the measurement logging. 5 You can schedule a time to record the data or start recording by selecting Start. 6 The 8990B also allows you to save a schedule to start logging the measurement data. Keysight 8990B User’s Guide...

  • Page 161: Generating And Saving A Report

    Using the 8990B Generating and Saving a Report The 8990B allows you to generate and save a report. 1 Select File > Save Report... on the toolbar as shown in Figure 2-151. Figure 2-151 Save Report... selection in the File menu...

  • Page 162: Figure 2-152 Report Dialog

    4 Select Keyboard on the Report dialog to display the on-screen keyboard. This is useful when there is no keyboard connected to the 8990B. 5 Select OK to generate the report with the desired information.

  • Page 163: Figure 2-153 Generated Report

    Using the 8990B Figure 2-153 Generated report 7 Select File > Save As to save the report. Keysight 8990B User’s Guide...

  • Page 164: Secure Erase

    EEPROM. The flash file system includes the 8990B states, calibration factor tables, and frequency-dependent offset tables. Upon completion, the 8990B will be initialized to the default settings. Use the following procedure to perform secure erase.

  • Page 165: Restoring The 8990B To Factory Default Settings

    Figure 2-156. Figure 2-156 Default Setup button in the Horizontal section Graphical interface 1 Select File > Restore Default Setup on the toolbar to restore the 8990B to its factory default settings as shown in Figure 2-157. Figure 2-157 Restore Default Setup selection in the File menu...

  • Page 166: Figure 2-158 Restoring Ppa Setup Notification Dialog

    Using the 8990B 2 When restoring the 8990B to its factory default settings, a notification dialog is displayed as shown in Figure 2-158. Figure 2-158 Restoring PPA setup notification dialog Table 2-2 8990B factory default settings Feature Defaul t setting...
  • Page 167 Using the 8990B Table 2-2 8990B factory default settings (continued) Feature Defaul t setting CCDF Scale 5 dB Sweep Free Source Source 1 Count 100 M Duration 10 ms Frame Trace d isplay Enabled Channel (1,4) Enabled Gaussian Disabled Reference...

  • Page 168: Configuring The Display Settings

    3 Select each respective check box to display the trace lines, track the waveform minimum and maximum, or show the waveform minimum and maximum line. The waveform minimum and maximum tracking feature will shade the area between the minimum and maximum traces. Keysight 8990B User’s Guide...

  • Page 169: Figure 2-161 Example Of The Waveform Display With The Waveform Minimum And Maximum Tracking Feature Enabled

    4 An example of the waveform display with the waveform minimum and maximum tracking feature enabled is as shown in Figure 2-161. Figure 2-161 Example of the waveform display with the waveform minimum and maximum tracking feature enabled Keysight 8990B User’s Guide...

  • Page 170: Remote Setup

    Figure 2-162 Remote Setup... selection in the Tools menu 2 The Remote Setup dialog is displayed as shown in Figure 2-163. The remote setup parameters are listed in the Remote Setup dialog. Figure 2-163 Remote Setup dialog Keysight 8990B User’s Guide...

  • Page 171: Maintenance

    Maintenance Front Panel Test Self-Test Error Messages Recovering the 8990B Hard Drive Removing the 8990B Hard Drive (Option 801) Cleaning the 8990B Contacting Keysight Returning the 8990B for Service Keysight Sales and Service Offices This chapter describes the built-in self-tests, error messages, and general...

  • Page 172: Front Panel Test

    Maintenance Front Panel Test The 8990B allows you to verify the 8990B front panel keys and knobs. Remove all the input and output connections from the 8990B before performing NOTE the front panel test. 1 Select Tools > Front Panel Test... on the toolbar as shown in Figure 3-1.

  • Page 173: Figure 3-2 Front Panel Test Dialog

    3 Press the front panel keys and knobs, and turn the knobs to verify that they are functioning. 4 The corresponding keys and knobs on the Front Panel Test dialog illuminate green when they are verified. Keysight 8990B User’s Guide...

  • Page 174: Figure 3-3 Front Panel Test Results

    Maintenance Figure 3-3 Front panel test results 5 Select Reset to reset the front panel test. Keysight 8990B User’s Guide...

  • Page 175: Self-Test

    The 8990B is designed to perform internal diagnostics. The self-test will run diagnostics on the test point voltages, fan, battery, PLL, channel peak paths, channel data acquisition points, and video. The 8990B self test can also be performed remotely. Remove all the input and output connections from the 8990B before performing NOTE the self-test.

  • Page 176: Figure 3-5 Self Test Dialog

    Figure 3-5 Self Test dialog 3 Select Start to start the self-test. 4 The self-test result is displayed in the Self Test dialog as shown in Figure 3-6. Figure 3-6 Self-test result in the Self Test dialog Keysight 8990B User’s Guide...

  • Page 177: Remote Self-Test

    This test confirms that the internal side cooling fan is operating. Battery This test checks the battery level. This test verifies the phase lock loop status. Channel 1/4 Measurement Path test This test confirms that the RF input channel measurement path is functioning. Keysight 8990B User’s Guide...
  • Page 178 Channel 1/4 Memory Interface test This test confirms that the RF input channel memory interface is operating. Video Ch This test confirms that the video input channels are functioning. Overall This status indicates the overall self-test status. Keysight 8990B User’s Guide...

  • Page 179: Error Messages

    Introduction This section contains information on error messages. It explains how to read the 8990B error queue and lists all the error messages and their probable causes. When there is a hardware-related problem (for example, a sensor overload), the error is indicated in the Log view of the multi-purpose pane at the bottom of the display.
  • Page 180 – select Clear in the Log view. To delete all the errors in the queue remotely: – use the *CLS (clear status) command. The error queue is also cleared when the 8990B power has been switched off. Keysight 8990B User’s Guide...

  • Page 181: Error List

    A character that was not a valid header separator was found in the command string – Program mnemonic too long A command header was received which contained more than the maximum 12 characters allowed Example: SYSTemCOMMunicateLANDGATeway "10.0.0.2" Keysight 8990B User’s Guide...
  • Page 182 Undefined header A command was received that is not valid for the 8990B. You may have misspelled the command, it may not be a valid command, or you may have selected the wrong interface. If you are using the short form of the command, remember that it may contain up to four letters.
  • Page 183 Invalid block data A block data element was expected but was invalid for some reason – Block data not allowed A legal block data element was encountered but not allowed by the 8990B at this point – Expression error Generic expression error –...
  • Page 184 The CCDF Gaussian trace is not enabled – Settings conflict;Requires CCDF reference trace to be enabled The CCDF reference trace is not enabled – Settings conflict;CCDF marker # source not set The source of CCDF marker A or B is not set Keysight 8990B User’s Guide...
  • Page 185 – Settings conflict;Unable to turn on Trigger on Event while ETS mode is on The 8990B is set to trigger on event when the ETS mode is enabled – Settings conflict;Trigger sweep must be in triggered mode while ETS is on. Trigger sweep is set to triggered...
  • Page 186 The command could not be executed due to a hardware problem – Hardware missing;Sensor not found in channel # The 8990B is unable to execute the command because no sensor is connected to the respective channel Keysight 8990B User’s Guide...
  • Page 187 This is the generic device-dependent error for devices that cannot detect more specific errors. This code indicates that only a Device-Dependent Error as defined in the IEEE-488.2, 11.5.1.1.6 has occurred. – System error The 8990B operation has not completed properly, possibly due to an abnormal hardware or firmware condition – Memory error An error was detected in the 8990B memory –...
  • Page 188 The system is busy processing the command 10 MHz setting is only applicable when ETS is off. 10 MHz setting is turned off The ETS mode is set when the 10 MHz reference signal input is enabled Keysight 8990B User’s Guide...
  • Page 189 Select another FDO table or delete some frequency points Detected channel 1 frequency changed. Power level is questionable. Please zero and cal channel 1. Detected channel 4 frequency changed. Power level is questionable. Please zero and cal channel 4. Keysight 8990B User’s Guide...

  • Page 190: Recovering The 8990B Hard Drive

    2 Connect the keyboard to the keyboard connector on the side panel of the 8990B. 3 Connect the mouse to the mouse connector on the side panel of the 8990B. 4 Turn on the 8990B. 5 When you see the initial boot menu, select Keysight Recovery System and press Enter.

  • Page 191: Removing The 8990B Hard Drive (Option 801)

    Maintenance Removing the 8990B Hard Drive (Option 801) This section explains how to remove the removable hard drive from the 8990B Option 801. The hard drive is not required to be removed before sending the 8990B for calibration or service.

  • Page 192: Figure 3-9 Unscrew The Hard Drive

    Maintenance 2 Unscrew the hard drive from the 8990B using a slotted screw driver as shown Figure 3-9. Figure 3-9 Unscrew the hard drive 3 Slowly pull and remove the hard drive from the slot in the 8990B. Figure 3-10 Pull and remove the hard drive from the slot Keysight 8990B User’s Guide...

  • Page 193: Cleaning The 8990B

    CAUTION drive. Cleaning the 8990B To clean the 8990B, disconnect its AC power cord and wipe the outer panels with a soft, lint-free, slightly water-dampened cloth. Do not use detergent. Disassembly is not required or recommended for cleaning. Do not use too much liquid when cleaning the 8990B. Water can enter the CAUTION front panel, damaging sensitive electronic components.

  • Page 194: Contacting Keysight

    “Check the basics” on page 195. If you still encounter problems, read the warranty printed at the front of this guide. If your 8990B is covered by a separate maintenance agreement, familiarize yourself with the terms.

  • Page 195: Instrument Serial Numbers

    8990B for service, make the following inspections: – Check that the line socket has power. – Check that the 8990B is plugged into a proper AC power source. – Check that the 8990B is switched on. – Check that other equipment, cables, and connectors are connected properly and operating correctly.

  • Page 196: Recommended Calibration Interval

    – The suffix indicates an alphanumeric code which is used to ensure unique identification of each product throughout Keysight. SERIAL NUMBER MY12345678 Keysight MADE IN MALAYSIA Figure 3-11 Serial number Recommended calibration interval Keysight recommends a one-year calibration cycle for the 8990B. Keysight 8990B User’s Guide...

  • Page 197: Returning The 8990B For Service

    Maintenance Returning the 8990B for Service Use the information in this section if you need to return your 8990B to Keysight. Packaging the 8990B for shipment Use the following procedure to package the 8990B for shipment to Keysight for servicing: –...
  • Page 198 The carton must be large and strong enough to accommodate the 8990B and allow at least 3 to 4 inches on all sides of the 8990B for packing material. – Surround the 8990B with at least 3 to 4 inches of packing material, or enough to prevent the 8990B from moving in the carton.

  • Page 199: Keysight Sales And Service Offices

    Maintenance Keysight Sales and Service Offices In any correspondence or telephone conversations, refer to the 8990B by its model number and full serial number. With this information, the Keysight representative can quickly determine whether your unit is still within its warranty period.
  • Page 200 Maintenance THIS PAGE HAS BEEN INTENTIONALLY LEFT BLANK. Keysight 8990B User’s Guide...

  • Page 201: Characteristics And Specifications

    Keysight 8990B Peak Power Analyzer User’s Guide Characteristics and Specifications For the characteristics and specifications of the 8990B Peak Power Analyzer, refer to the datasheet at http://literature.cdn.keysight.com/litweb/pdf/5990-8126EN.pdf.
  • Page 202 Characteristics and Specifications THIS PAGE HAS BEEN INTENTIONALLY LEFT BLANK. Keysight 8990B User’s Guide...
  • Page 203 This information is subject to change without notice. Always refer to the Keysight website for the latest revision. © Keysight Technologies 2011–2016 Edition 13, June 3, 2016 Printed in Malaysia *08990-90005*...

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