Page 1 Test Equipment Depot - 800.517.8431 - 99 Washington Street Melrose, MA 02176 - TestEquipmentDepot.com User's Guide Keysight Technologies FieldFox Analyzers N9912A...
Page 2 COVERING THE MATERIAL IN THIS DOCUMENT THAT CONFLICT WITH government requirements THESE TERMS, THE WARRANTY beyond those set forth in the © Keysight Technologies, Inc. 2015, TERMS IN THE SEPARATE EULA shall apply, except to the 2017 AGREEMENT WILL CONTROL.
Page 3 For customers upgrading FieldFox firmware, the following is a list of changes from the previous release: Updated LAN IP behavior: “LAN Settings” on page 18-18 Other updates: — pulse measurement mode offset value limit — differential measurement impedance format calculation —...
Page 4 A.09.50 Firmware Release Updates (Also, applies to N9912A units with serial number prefixes ≥5607) For customers upgrading FieldFox firmware, the following is a list of changes from the previous release: Option 350 does not apply to N9912A Added Real-Time Spectrum Analysis (RTSA) Mode - (...
Page 5: Table Of Contents
Contents Table of Contents 1. Overview Options and Features ............1-1 Accessories .
Page 6 Contents Resolution (Number of Data Points) ......... 3-8 Sweep Time .
Page 7 Contents Single or Continuous Measure..........5-13 Resolution (Number of Data Points) .
Page 8 Contents Cal ON ? – Questionable Accuracy ......... . 7-8 Compatible Mode Calibrations .
Page 9 Contents Audio Beep at Marker Power ..........8-35 Meas UNCAL Error .
Page 10 Contents 12. Frequency Offset Using Power Sensor (FOPS) – Option 208 Overview..............12-3 FOPS Settings .
Page 11 Contents IF Bandwidth ............14-5 Output Power .
Page 12 Contents 17. File Management Saving and Recalling Files........... 17-2 Save Files.
Page 13 Contents Date and Time, Format, and Time Zone Settings ......18-16 LAN Settings............18-18 Power ON .
Page 14 Contents Certification and Compliance Statements ........21-14 Certification .
Page 15: Overview
Keysight Handheld Analyzers N9912A User’s Guide Overview Options and Features Table 1-1 Models Options and Features Learn more Cable and Antenna Test (CAT) Mode CAT Mode on page 3-3 — 2 MHz to 4 GHz (Option 104) — 2 MHz to 6 GHz (Option 106) Measurements: —...
Page 16 Overview Options and Features Table 1-1 Models Options and Features Learn more Power Meter Mode (Option 302) Power Meter Mode on page 11-1 Use with Keysight External USB Power Sensors Network Analyzer (NA) Mode (Option 303) NA Mode on page 5-1 —...
Page 17: Accessories
Overview Accessories Table 1-1 Models Options and Features Learn more — Expands internal storage — Useful for file transfer — Flash Drive and standard SD Card not included — FieldFox release 4.0 supports standardSDHC (high-capacity) Card Battery or AC Power page 14-1 —...
Page 18: Fieldfox Manuals, Software, And Supplemental Help
Overview FieldFox Manuals, Software, and Supplemental Help Table 1-2 Accessories Accessory Part Description Number N9910X–891 Quick Reference Guide (printed copy) Although not supplied, a USB keyboard CAN be used with the FieldFox. Conventions that are used in the Manual — Hardkey indicates a front panel button. The functionality of these buttons does not change.
Page 19: Safety Notes
Overview FieldFox Manuals, Software, and Supplemental Help Safety Notes The following safety notes are used throughout this manual. Familiarize yourself with each of the notes and its meaning before operating this instrument. More pertinent safety notes for using this product are located in Chapter 21, “Safety Considerations”, on page 21-1.
Page 20 Overview FieldFox Manuals, Software, and Supplemental Help 1- 6 Keysight N9912-90001 User’s Guide...
Page 21: Preparing For Initial Use Of Your New Fieldfox
Keysight Handheld Analyzers N9912A User’s Guide 2 Preparing for Initial Use of Your New FieldFox Check the Shipment When you receive your FieldFox, check the shipment according to the following procedure: 1. Inspect the shipping container for damage. Signs of damage may include a dented or torn shipping container or cushioning material that indicates signs of unusual stress or compacting.
Page 22: Install The Lithium-Ion Battery
Preparing for Initial Use of Your New FieldFox Install the Lithium-Ion Battery Install the Lithium-Ion Battery Step Notes 1. Open the battery door Push the button on the battery compartment door while sliding the door outward. 2. Insert the battery. The terminals end of the battery is inserted into the compartment.
Page 23: Fieldfox On/Off Settings
Preparing for Initial Use of Your New FieldFox FieldFox ON/OFF Settings — On the battery. Open the FieldFox battery compartment door to view the battery LCD. To conserve battery power: — Use Run/Hold to single-trigger a measurement when needed. Hold shown on the display.
Page 24: Power Button Led Status
Preparing for Initial Use of Your New FieldFox FieldFox High Temperature Protection — To turn Power OFF (very low battery drain), press and hold the power button. Data and instrument state are NOT automatically saved when the FieldFox is powered OFF. Learn how to save data and instrument state in Chapter 17, “File Management”, on page 17-1.
Page 25: Temperature Control Mode
Preparing for Initial Use of Your New FieldFox Avoid Overpowering the FieldFox — The temperature at which the following events occur is the average of the RF1, RF2, SB1, SB2 temperatures. These temperatures come from internal sensors embedded within FieldFox. Temperature Control Mode At approximately 73°C, the FieldFox enters Temperature Control mode by reducing display intensity and measurement speed.
Page 26 Preparing for Initial Use of Your New FieldFox Avoid Overpowering the FieldFox Very often, coaxial cables and antennas build up a static charge, which, if allowed to discharge by connecting to the FieldFox, may damage the instrument input circuitry. To avoid such damage, it is recommended to dissipate any static charges by temporarily attaching a short to the cable or antenna prior to attaching to the FieldFox.
Page 27: Take The Fieldfox Tour
Preparing for Initial Use of Your New FieldFox Take the FieldFox Tour Take the FieldFox Tour Front Panel Keysight N9912-90001 User’s Guide 2- 7...
Page 28 Preparing for Initial Use of Your New FieldFox Take the FieldFox Tour Caption Description Learn More: Power ON: press momentarily. “FieldFox ON/OFF STAND BY: with FieldFox power ON, press briefly. Settings” OFF: press and hold until the FieldFox shuts off (about 4 seconds). on page Not lit: FieldFox OFF, not charging “Power...
Page 29 Preparing for Initial Use of Your New FieldFox Take the FieldFox Tour Caption Description Learn More: Limit Sets limit lines for quick Pass/Fail judgment “All about Limit Lines” on page 16-14 Run/Hold Toggles between free Run and Hold/Single operation. “Run/Hol d”...
Page 30: Top Panel
Preparing for Initial Use of Your New FieldFox Take the FieldFox Tour Top Panel Caption Descriptions Learn More: RF Output For CAT and NA measurements, use to make reflection measurements. “CAT Mode Settings” Maximum: ±50 VDC, +23 dBm RF on page 3-3 “NA Mode Settings”...
Page 31 Preparing for Initial Use of Your New FieldFox Take the FieldFox Tour Connector Description Learn More DC power connector used to connect to the AC/DC adapter. Maximum: 19 “Triggering” on page VDC, 4 ADC. 8-25 Micro Secure Digital slot. Use to extend the memory of the FieldFox. “Saving and Recalling Files”...
Page 32: Screen Tour
Preparing for Initial Use of Your New FieldFox Take the FieldFox Tour Screen Tour Caption Description Learn More: Title – write your own text here “Title” on page 18-6 Current Mode Run / Hold “Run/Hold” on page 18-2 Display Format Mode dependent Scale/division Mode dependent...
Page 33 Preparing for Initial Use of Your New FieldFox Take the FieldFox Tour Caption Description Learn More: Bandpass / Lowpass setting (Fault Meas) “DTF Measurement IF BW in NA Mode Settings” on page 4-19 Output Power Level (CAT and NA) “Output Power” on page 3-9 Measurement Stop Freq or Distance Mode dependent...
Page 34: How To Enter Numeric Values
Preparing for Initial Use of Your New FieldFox How to Enter Numeric Values How to Enter Numeric Values Many settings on the FieldFox require the entry of numeric values. How to enter numeric values Use any combination of the following keys: —...
Page 35: Connector Care
Preparing for Initial Use of Your New FieldFox Connector Care Connector Care — Never store connectors, airlines, or calibration standards loose in a box. This is a common cause of connector damage. — Install protective end caps when connectors are not in use. —...
Page 36 Preparing for Initial Use of Your New FieldFox Connector Care 2- 16 Keysight N9912-90001 User’s Guide...
Page 37: Cat (Cable And Antenna Test) Mode
Keysight Handheld Analyzers N9912A User’s Guide CAT (Cable and Antenna Test) Mode CAT Mode is typically used to test an entire transmission system, from the transmitter to the antenna. This process is sometimes referred to as Line Sweeping. CAT Mode is similar to NA (Network Analyzer) Mode. Learn more in the Supplemental Online Help: http://na.support.keysight.com/fieldfox/help/SupHelp/F ieldFox.htm...
Page 38 CAT (Cable and Antenna Test) Mode Procedures “Return Loss Measurements” on page 3-12 “1-Port Cable Loss Measurements” on page 3-12 “2-Port Insertion Loss Measurements” on page 3-14 “DTF (Distance to Fault) Measurements” on page 4-17 See Also “Calibration for NA, CAT, and VVM Modes” on page 7-1 “All about Markers”...
Page 39: Cat Mode Settings
CAT (Cable and Antenna Test) Mode CAT Mode Settings CAT Mode Settings Select CAT Mode before making any setting in this chapter. How to select CAT Mode — Press Mode. — Then CAT. Measurement Selection How to select a CAT Mode Measurement Learn more about the following measurements in the Supplemental Online Help: http://na.support.keysight.com/fieldfox/help/SupHelp/FieldFox.htm...
Page 40: Quick Settings Table
CAT (Cable and Antenna Test) Mode CAT Mode Settings — Cable Loss (1-Port) 1-port reflection measurement that displays the loss of a transmission line. Learn more on page 3-12. — Insertion Loss (2-Port) (Option 110 ONLY) 2-port transmission measurement that accurately displays the loss through a cable or other device in dB.
Page 41: Frequency Range
CAT (Cable and Antenna Test) Mode CAT Mode Settings — Bottom The Settings table is shown below the trace window — When finished changing ALL settings, press Done to save your settings Frequency Range Set the range of frequencies over which you would like to make CAT Mode measurements.
Page 42: Averaging
CAT (Cable and Antenna Test) Mode CAT Mode Settings — Scale Manually enter a scale per d ivision to view specific areas of the trace. — Ref Level Manually set the value of the reference line. Enter a negative value by pressing Run/Hold (+/-) either before or after typing a value.
Page 43: Smoothing
CAT (Cable and Antenna Test) Mode CAT Mode Settings This setting can be changed at any time without affecting calibration accuracy. Averaging is often used to increase the dynamic range of a measurement. To achieve the highest dynamic range, select NA mode and reduce the IF Bandwidth setting.
Page 44: Resolution (Number Of Data Points)
CAT (Cable and Antenna Test) Mode CAT Mode Settings — Then choose one of the following: — Single Automatically sets Continuous OFF and causes FieldFox to make ONE sweep, then hold for the next Single key press. Hold is annotated in the upper left corner of the display when NOT sweeping, and changes to an arrow -->...
Page 45: Output Power
CAT (Cable and Antenna Test) Mode CAT Mode Settings How to set Sweep Time — Press Sweep 3. — Then Min Swp Time. — Enter a value using the numeric keypad. — Press a multiplier key. Learn more in “Multiplier Abbreviations” on page 2-14.
Page 46: Interference Rejection
CAT (Cable and Antenna Test) Mode CAT Mode Settings — Press Enter. Nominal here means: a general, descriptive term or design parameter. It is not tested and not covered by the product warranty. In FieldFox’s with FW <A.08.15, the Nominal Output displayed on the bottom right side of the display indicates a range of low and high power values.
Page 47: Coupled Frequency
CAT (Cable and Antenna Test) Mode CAT Mode Settings — Maximum The highest level of Interference rejection. Coupled Frequency This setting, especially useful for a Return Loss & DTF measurement, allows both measurements to have different frequency ranges. How to set Coupled Frequency With a Return Loss &...
Page 48: Return Loss Measurements
CAT (Cable and Antenna Test) Mode Return Loss Measurements Return Loss Measurements Return loss can be thought of as the absolute value of the reflected power compared to the incident power. When measuring an OPEN or SHORT, all incident power is reflected and approximately 0 dB return loss is displayed.
Page 49: How To Make A 1-Port Cable Loss Measurement
CAT (Cable and Antenna Test) Mode 1-Port Cable Loss Measurements A 2-port Insertion Loss measurement is usually more accurate than a 1-port Cable Loss measurement. However, to perform a 2-port Insertion Loss measurement, both ends of the cable must be connected to the FieldFox, and the FieldFox must have option 110 installed.
Page 50: 2-Port Insertion Loss Measurements
CAT (Cable and Antenna Test) Mode 2-Port Insertion Loss Measurements 13.Press Data Math then Data – Mem. The ripple in the measurement is removed. These minor imperfections in the cable should not be considered in the Cable Loss measurement. 14.Use Averaging to remove random noise from high-loss measurements. Press BW 2 then Average.
Page 51 CAT (Cable and Antenna Test) Mode 2-Port Insertion Loss Measurements When measuring very long lengths of cable, it may be necessary to increase the sweep time. Learn how on page 3-8. Learn why in the Supplemental Online Help: http://na.support.keysight.com/fieldfox/help/SupHelp/FieldFox.htm Keysight N9912-90001 User’s Guide 3- 15...
Page 52 CAT (Cable and Antenna Test) Mode 2-Port Insertion Loss Measurements 3- 16 Keysight N9912-90001 User’s Guide...
Page 53: Dtf (Distance To Fault) Measurements
Keysight Handheld Analyzers N9912A User’s Guide DTF (Distance to Fault) Measurements CAT Mode Distance to Fault (DTF) measurements are generally used to locate problems, or faults, in a length of cable or transmission line. In this chapter, the cable to be tested is referred to as the DUT (Device Under Test). Settings that are NOT unique to DTF measurements are documented in the Chapter 3, “CAT (Cable and Antenna Test) Mode.”...
Page 54: How To Make Dtf Measurements
DTF (Distance to Fault) Measurements How to make DTF Measurements How to make DTF Measurements Before starting, you may need the following: — Jumper cable or adapter to connect the beginning of the DUT to the FieldFox. — LOAD with correct connector type and gender to terminate the end of the DUT (if possible).
Page 55: Dtf Measurement Settings
DTF (Distance to Fault) Measurements DTF Measurement Settings DTF Measurement Settings DTF Settings Table You can set and view all of the DTF settings, including some calculated values, on the DTF Settings table. Learn about the calculated values in “Calculated DTF values”...
Page 56: Dtf Start And Stop Distance
DTF (Distance to Fault) Measurements DTF Measurement Settings — More then DTF (Lin) Faults are displayed on the Y-axis in linear (unitless) format. DTF Start and Stop Distance In DTF measurements, you set the physical length of cable or other device to be tested.
Page 57: Coupled Frequency
DTF (Distance to Fault) Measurements DTF Measurement Settings — Bandpass Mode (Default setting) The frequency range of a DTF measurement is set manually. Use Bandpass mode when the DUT contains a diplexer or other filtering device which does not pass some frequencies.
Page 58: Cable (Correction) Specifications
DTF (Distance to Fault) Measurements DTF Measurement Settings Cable (Correction) Specifications By default, the FieldFox does NOT correct DTF measurements to account for the inherent loss of a cable. However, to make more accurate DTF measurements, the Cable Loss and Velocity Factor values should be considered.
Page 59 DTF (Distance to Fault) Measurements DTF Measurement Settings — Auto Use Cable Loss and Velocity Factor values from a Cable file. See “How to Edit, Save, and Recall a Cable File” below. This will overwrite a manually-entered value. — (Default setting) Manually enter a value for Cable Loss and Velocity Factor.
Page 60 DTF (Distance to Fault) Measurements DTF Measurement Settings — Clear All then Yes. Remove all Freq/Loss pairs from the table and resets header information to default settings. — Press Done to close the Cable Editor. How to Save or Recall a Cable —...
Page 61: Window Settings
DTF (Distance to Fault) Measurements DTF Measurement Settings 1.8 GHz = 0.18 dB/m 2 GHz = 0.2 dB/m The correction for loss at 5 meters in one direction: 0.18 dB/m * 5m = 0.9 dB. All DTF measurements correct for loss for travel down the DUT and back, so double the correction: 0.9 dB * 2 = 1.8 dB.
Page 62: Calculated Dtf Values
DTF (Distance to Fault) Measurements DTF Measurement Settings Calculated DTF values Press Next Page on the DTF Settings Table to view the following calculated Values noted on the FieldFox screen with c - <setting> Start Frequency – Start frequency that is used to calculate DTF. Stop Frequency –...
Page 63 DTF (Distance to Fault) Measurements DTF Measurement Settings A true fault response will not move in distance. That is, if a true fault is present at 10.3 meters, changing the stop distance from 15 m to 20 m will not move the fault;...
Page 64 DTF (Distance to Fault) Measurements DTF Measurement Settings 4- 28 Keysight N9912-90001 User’s Guide...
Page 65: Na (Network Analyzer) Mode
Keysight Handheld Analyzers N9912A User’s Guide 5 NA (Network Analyzer) Mode Learn more about NA Mode measurements in the FieldFox Supplemental Online Help: http://na.support.keysight.com/fieldfox/help/SupHelp/FieldFox.htm. In this Chapter “Measurement Selection” on page 5-3 “Parameter Conversion” on page 5-3 “Quick Settings” on page 5-5 “Calibration Settings”...
Page 66 NA (Network Analyzer) Mode “S21Transmission Measurements” on page 5-17 “Increase Dynamic Range” on page 5-20 See Also “Why and When to Calibrate” on page 7-2 “All about Markers” on page 16-2 “All about Limit Lines” on page 16-14 “All about Trace Math” on page 16-19 Learn how to make 75Ω...
Page 67: Na Mode Settings
NA (Network Analyzer) Mode NA Mode Settings NA Mode Settings Select NA Mode before making any setting in this chapter. How to select NA Mode — Press Mode_. — Then NA. Measurement Selection How to measure S-parameters 1. Press Measure 1 2.
Page 68: Multi-Trace Configurations
NA (Network Analyzer) Mode NA Mode Settings — Then choose from the following: —Off (default) No conversion is performed. —Z Conv (--) or Y Conv (--) Perform conversion for impedance (Z) or admittance (Y). Then choose from the following for either: ——Auto The displayed S-parameter is converted to the appropriate Z or Y parameter: Refl for S11 and S22;...
Page 69: Quick Settings
NA (Network Analyzer) Mode NA Mode Settings — By default, a marker is created on ALL traces. However, they can be created individually by disabling Coupled Markers. Learn more in “Coupled Markers (NA Mode)” on page 16-5. How to select a multi-trace configuration —...
Page 70: Calibration Settings
NA (Network Analyzer) Mode NA Mode Settings How to view and change Quick Settings — Press Meas Setup 4. — Then Settings. — Press Next Page Previous Page to view all settings. If these softkeys are NOT available, then all available settings fit on one page. —...
Page 71: Format
NA (Network Analyzer) Mode NA Mode Settings Format Select the display format in which to present measurement results. This setting can be changed at any time without affecting calibration accuracy. Learn more about Display Formats in the FieldFox Supplemental Online Help: http://na.support.keysight.com/fieldfox/help/SupHelp/FieldFox.htm The marker on screen readout can be changed to formats other than the...
Page 72: Frequency Range
NA (Network Analyzer) Mode NA Mode Settings — Unwrap Phase Same as Phase, but without 180 degree wrapping. Phase is unwrapped by comparing the phase from one data point to the next. If the phase difference between two data points is greater than 180 degrees, or if the phase of the first data point is greater than 180 degrees from DC, than the phase measurement is probably NOT accurate.
Page 73: Magnitude Offset
NA (Network Analyzer) Mode NA Mode Settings — Then choose from the following methods: —Autoscale Automatically adjusts the Y-axis to comfortably fit the Min and Max amplitude of the trace on the screen. —Autoscale All Autoscales all of the traces on the screen, useful only for multi-trace configurations.
Page 74: Electrical Delay
NA (Network Analyzer) Mode NA Mode Settings — Then enter a positive or negative offset value in dB using the numeric keypad, the arrows, or the rotary knob. Press a multiplier key. Learn about “Multiplier Abbreviations” on page 2-14. — And/or press Slope - Offsets the data trace by a value that changes linearly with frequency.
Page 75: Averaging
NA (Network Analyzer) Mode NA Mode Settings Emulate a projected phase shift in your measurement. For example, if you know that you need to add a cable and that the length of that cable will add a certain phase shift to your measurement, you can use phase offset to add that amount and simulate the complete device measurement.
Page 76: If Bandwidth
NA (Network Analyzer) Mode NA Mode Settings — Point - Each data point is measured <n> times and averaged before going to the next data point. On subsequent sweeps, averaging restarts by measuring each data point again <n> times. The average counter is not updated because data is not displayed until all the averages have been applied.
Page 77: Single Or Continuous Measure
NA (Network Analyzer) Mode NA Mode Settings — Press Enter. Single or Continuous Measure This setting determines whether the FieldFox sweeps continuously or only once each time the Single button is pressed. Use Single to conserve battery power or to allow you to save or analyze a specific measurement trace. This setting can be changed at any time without affecting calibration accuracy.
Page 78: Sweep Time
NA (Network Analyzer) Mode NA Mode Settings Sweep Time The fastest possible sweep time is always used as the default setting. Use the Min Swp Time setting to slow the sweep time when measuring long lengths of cable. Learn more at the FieldFox Supplemental Online Help: http://na.support.keysight.com/fieldfox/help/SupHelp/FieldFox.htm The actual sweep time is shown on the FieldFox screen.
Page 79: System Impedance (Z0)
NA (Network Analyzer) Mode NA Mode Settings — High (Default setting) Sets output power to the maximum achievable power at all displayed frequencies. Please see the FieldFox Specifications (page B-3) for expected power levels. — Low Sets output power to approximately –27 dBm. —...
Page 80: Port Extensions
NA (Network Analyzer) Mode NA Mode Settings Port Extensions Port extensions allow you to electrically move the calibration reference plane on either port 1 after you have performed a calibration. Phase measurements, and therefore Port Extensions, are NOT available on port Why use Port Extensions Use port extensions if you are unable to perform a calibration directly at your device because the location is not accessible.
Page 81: Velocity Factor
NA (Network Analyzer) Mode NA Mode Settings While setting Port Extension, the physical length of the extension, at the current Velocity Factor setting, is visible to the right (red box in above image). Velocity Factor The electrical delay or port extension value is entered as delay, or electrical length, in units of time.
Page 82: Big Marker Display States (A And B)
NA (Network Analyzer) Mode NA Mode Settings How to make an S21 Transmission Measurement 1. Press Node then then Transmission. 2. Press Freq/Dist and enter Start Stop frequency values of the measurement. 3. Press Sweep 3 then select a Resolution setting.
Page 83 NA (Network Analyzer) Mode NA Mode Settings — Trace Settings - For each possible trace (1, 2, and 3) select from the following: — Measurement – S-Parameter or Receiver measurement to display. S11 is default. Learn more in “Measurement Selection” on page 5-3.
Page 84: Increase Dynamic Range
NA (Network Analyzer) Mode NA Mode Settings Increase Dynamic Range Dynamic range is the difference between maximum input power to the FieldFox receiver (without compressing the receiver), and the minimum measurable power (noise floor). Measurement accuracy is increased when the DUT response is at least 10 dB above the noise floor.
Page 85: Time Domain - Option 010
Keysight Handheld Analyzers N9912A User’s Guide Time Domain – Option 010 With NA Mode, Time Domain Reflectometry (Opt 010), frequency information is used to calculate and display measurements with time as the horizontal display axis. The response values appear separated in time allowing a different perspective of the test device's performance and limitations.
Page 86 Time Domain – Option 010 Gating Settings “Start, Stop, Center, and Span Gate Times” on page 6-10 “Gating Type” on page 6-10 6- 2 Keysight N9912-90001 User’s Guide...
Page 87: Overview
Time Domain – Option 010 Overview Overview In normal NA Mode operation, the FieldFox measures the characteristics of a test device as a function of frequency. With Time Domain (opt 010), frequency information is used to calculate the inverse Fourier transform and display measurements with time on the horizontal display axis.
Page 88: Time Domain (Transform) Settings
Time Domain – Option 010 Time Domain (Transform) Settings Time Domain (Transform) Settings You can set and view most of the Time Domain settings on the Transform Settings table. Transform Settings Table The following settings (from Transform Stimulus Settings to Data Processing) are listed in the order they appear on the Transform Settings menu selection.
Page 89: Stimulus (Mode)
Time Domain – Option 010 Time Domain (Transform) Settings Stimulus (Mode) — There are three variations on how the Time Domain transform algorithm is applied to the frequency domain measurement. Each method has a unique application. — Lowpass Impulse - Highest resolution. Most useful for seeing small responses in devices that pass low frequencies, such as cables.
Page 90: Distance Units
Time Domain – Option 010 Time Domain (Transform) Settings — Then choose from: — Start Sets the transform start time that is displayed on the FieldFox screen. — Stop Sets the transform stop time that is displayed on the FieldFox screen.
Page 91: Line Loss And Velocity Factor
Time Domain – Option 010 Time Domain (Transform) Settings The Window setting applies to ALL traces. How to make Window setting — Press Measure 4. — Then Transform. — Then More. — Then Transform Window. — A settings table appears that allows you to navigate and select the following settings.
Page 92: Data Chain
Time Domain – Option 010 Time Domain (Transform) Settings About Velocity Factor and Line Loss — Velocity Factor is a property of the physical material of a cable. A VF of 1.0 corresponds to the speed of light in a vacuum, or the fastest VF possible. A polyethylene dielectric cable has VF = 0.66 and a cable with PTFE dielectric has VF = 0.7.
Page 93: Trace Settings
Time Domain – Option 010 Trace Settings Trace Settings The following two settings apply to specific traces. Transform Enable Enable Time Domain transform for the specific trace. — Select the trace. — Press Measure Setup 4. — Then Transform. — Then choose from: —...
Page 94: Gating
Time Domain – Option 010 Gating Gating Perhaps the most beneficial feature of Time Domain transform is the Gating function. When viewing the Time Domain response of a device, the gating function can be used to “virtually” remove undesired responses. You can then simultaneously view a frequency domain trace as if the undesired response did not exist.
Page 95 Time Domain – Option 010 Gating — Notch REMOVES the responses within the Gating Start and Stop times. Gating Shape This setting defines the filter characteristics of the gate function. Choose from Minimum, Normal, Wide, Maximum. Time domain Gate Shape setting is shown in the graphic above. Gate Shape Passband Sidelobe...
Page 96 Time Domain – Option 010 Gating 6- 12 Keysight N9912-90001 User’s Guide...
Page 97: Calibration For Na, Cat, And Vvm Modes
Keysight Handheld Analyzers N9912A User’s Guide Calibration for NA, CAT, and VVM Modes Calibration removes the systematic errors that are associated with measurements in NA, CAT, and VVM Modes. Key presses are identical in all of these Modes. In this Chapter “Why and When to Calibrate”...
Page 98: Why And When To Calibrate
Calibration for NA, CAT, and VVM Modes Why and When to Calibrate Why and When to Calibrate There are well-defined and understood systematic errors that are measured and calculated during the calibration process. These errors are caused by leakage signals inside the FieldFox, by the frequency response of the FieldFox receivers, and by reflections inside the FieldFox that interact with the DUT.
Page 99: Preset Calibration (Also Known As Calready)
Calibration for NA, CAT, and VVM Modes Why and When to Calibrate Preset Calibration (also known as CalReady) CalReady (Preset calibration) only applies to S11 and Return Loss measurements. CalReady does not apply to S21 or Insertion Loss measurements. Also, you can interpolate the S11 calibration, but you cannot interpolate the S21 calibration or S21 normalization.
Page 100 Calibration for NA, CAT, and VVM Modes Why and When to Calibrate — If a jumper cable or adapter is required to connect the DUT to the FieldFox, connect those components to the FieldFox RF Out connector NOW. The effects of those components will be measured and removed during the calibration, and only the effects of the DUT will be displayed in the measurement results.
Page 101: O, S, L Cal
Calibration for NA, CAT, and VVM Modes Why and When to Calibrate — Press Skip Step in all other cases and when making DTF measurements. Measuring a load would do little to improve accuracy. — Press Finish. — CAL ON Q is shown on the screen for all displayed measurements that are corrected with QuickCal.
Page 102: Normalize
Calibration for NA, CAT, and VVM Modes Why and When to Calibrate Before performing an O,S,L Cal, set the Measurement type, Frequency Range, Power Level, and Resolution of the measurement. The calibration will remain highly accurate until these settings change, or the physical connection to the FieldFox changes.
Page 103: Interpolation
Calibration for NA, CAT, and VVM Modes Why and When to Calibrate How to perform a Normalization — Press Cal 5. — Cal Type [Normalize] should appear. — Connect a short, high-quality, phase stable cable between the FieldFox RF OUT and RF IN connectors. All subsequent insertion loss measurements are made relative to the insertion loss of this cable.
Page 104: Cal On ? - Questionable Accuracy
Calibration for NA, CAT, and VVM Modes Why and When to Calibrate How to turn Error Correction OFF "Error Correction" is applying the results of a calibration to a measurement. Error Correction is automatically turned ON after a calibration. You could turn Error Correction OFF in order to see the effects of a calibration on the measurement.
Page 105: Save The Calibration
Calibration for NA, CAT, and VVM Modes Why and When to Calibrate 2. The Frequency Range, Resolution, Power (Hi/Low), and IF BW (in NA Mode) settings of the two calibrations are identical. When both conditions occur, you can switch between the 1-port and the 2-port measurements, and both will remain fully calibrated.
Page 106: Verifying Calibration And Jumper Cable Integrity
Calibration for NA, CAT, and VVM Modes Verifying Calibration and Jumper Cable Integrity Verifying Calibration and Jumper Cable Integrity After calibrating, it is important to verify that the calibration is good. When using a jumper cable, also verify that the cable is of high quality. Verify a Calibration —...
Page 107: Calibration Method Summary
Calibration for NA, CAT, and VVM Modes Calibration Method Summary Calibration Method Summary — O,S,L is ALWAYS the most accurate Cal method. The quality of a O,S,L is completely dependent on the quality of the OPEN, SHORT, LOAD standards. Use the correct high quality standards to ensure the most accurate calibration.
Page 108 Calibration for NA, CAT, and VVM Modes Calibration Method Summary 7- 12 Keysight N9912-90001 User’s Guide...
Page 109: Sa (Spectrum Analyzer) Mode
Keysight Handheld Analyzers N9912A User’s Guide 8 SA (Spectrum Analyzer) Mode SA Mode measures signals at the RF IN port. The RF OUT connector is NOT used. General purpose Spectrum Analyzer measurements are available with Option 230 or 231. SA measurements require NO calibration. For a comprehensive SA Mode tutorial, see Spectrum Analysis Basics (App Note 150) http://literature.cdn.keysight.com/litweb/pdf/5952-0292.pdf Figure 8-1 SA Display with Markers...
Page 110 SA (Spectrum Analyzer) Mode “External Gain” on page 8-10 “Attenuation Control” on page 8-10 “Preamplifier Control (Opt 235)” on page 8-11 “Check for Compressed Measurements” on page 8-11 “Field Strength Measurements” on page 8-12 “Tune & Listen (AM/FM)” on page 8-16 “Independent Source”...
Page 111 SA (Spectrum Analyzer) Mode “Waterfall Display” on page 9-5 “How to Record a Session” on page 9-9 Optional Settings: “All about Markers” on page 16-2 “All about Limit Lines” on page 16-14 “Saving and Recalling Files” on page 17-2 Keysight N9912-90001 User’s Guide 8- 3...
Page 112: Sa Mode Settings
SA (Spectrum Analyzer) Mode SA Mode Settings SA Mode Settings Select SA Mode before making any setting in this chapter. Because there is no calibration, these settings can be made in any order. How to select SA Mode — Press Mode_ —...
Page 113 SA (Spectrum Analyzer) Mode SA Mode Settings — Start Stop frequencies. Start is the beginning of the X-axis and Stop is the end of the X-axis. When the Start and Stop frequencies are entered, then the X-axis annotation on the screen shows the Start and Stop frequencies.
Page 114: Radio Standard
SA (Spectrum Analyzer) Mode SA Mode Settings Radio Standard A Radio Standard is a collection of settings that are applied to the FieldFox for specific RF protocols. When a Radio Standard is applied, the FieldFox frequency and channel settings change to that of the standard. By default, the FieldFox locates the center frequency of the standard in the middle of the screen and sets the frequency span to cover all of the Uplink and Downlink frequencies.
Page 115: Channel Selection
SA (Spectrum Analyzer) Mode SA Mode Settings — Then select the *.csv file using the arrows or rotary knob and press Enter. — Custom Radio Standards can be removed from the FieldFox by selecting Measure 1 then Rad io Standard then Delete Rad io Standard.
Page 116: Scale And Units
SA (Spectrum Analyzer) Mode SA Mode Settings — Use the arrows to increment the channel number by an amount specified by the Channel Step value (see below). — Then press Enter. Select either Uplink or Downlink Frequencies Press Chan Direction to toggle between Uplink and Downlink.
Page 117 SA (Spectrum Analyzer) Mode SA Mode Settings When RF Attenuation set to Auto, the RF Attenuation is coupled to Reference Level. How to set Scale Press Scale / Amptd. Then choose from the following: — Scale Type [current setting] — Logarithmic scale (default setting).
Page 118: External Gain
SA (Spectrum Analyzer) Mode SA Mode Settings External Gain When using an external amplifier or attenuator, the SA mode trace amplitude values can be offset to compensate for the effect of the external device. This effectively moves the reference plane of the SA measurement port out to just beyond the external device.
Page 119: Preamplifier Control (Opt 235)
SA (Spectrum Analyzer) Mode SA Mode Settings — Press Scale/Amptd. — Then RF Atten Auto Man. — Auto RF Attenuation is set by adjusting the Reference Level. As the Reference Level is lowered, for example from –10 dBm to –30 dBm, the FieldFox assumes that you are looking at low-level signals.
Page 120: Field Strength Measurements
SA (Spectrum Analyzer) Mode SA Mode Settings — If the signal level DOES increase, then the receiver was compressed. Set the RF Attenuation value at the setting when further increases no longer result in an increase in the displayed power level. Field Strength Measurements To measure the strength of any signal transmitted through the air, an antenna must be connected to the FieldFox.
Page 121: Using The Antenna/Cable Editor
SA (Spectrum Analyzer) Mode SA Mode Settings — SrcSide Antenna Off / On Edit/Recall an Antenna file to be used to transmit. — RcvrSide Antenna Off / On Edit/Recall an Antenna file to be used to receive. — SrcSide Cable Off / On Edit/Recall a Cable file to be used on the Source side.
Page 122 SA (Spectrum Analyzer) Mode SA Mode Settings Figure 8-2 FieldFox Antenna Editor How to use the Antenna/Cable Editor — Press then to clear all data from the existing Antenna or Cable table and reset header information to default settings. — Then Ed it Antenna Ed it Cable to open the Antenna / Cable Editor.
Page 123 SA (Spectrum Analyzer) Mode SA Mode Settings ——Antenna Factor describes the dB value needed to accurately display a far-field signal in terms that are in the units listed below. When the antenna has low gain, or low efficiency, the dB value to be added is larger. —When one Freq/Value pair is entered, that correction value is applied to the entire displayed frequency span.
Page 124: Tune & Listen (Am/Fm)
SA (Spectrum Analyzer) Mode SA Mode Settings How to create a Cable file from an S21 (NA mode) measurement 1. Measure the S21 of a cable. 2. Use Manage Folders to change the active folder to CABLES. Learn how in “Manage Folders”...
Page 125 SA (Spectrum Analyzer) Mode SA Mode Settings How to select Tune & Listen — Press Measure 1. — Then Tune & Listen. — Then choose a demodulation type. Select a setting based on the type of interfering signal you suspect is being broadcast. —...
Page 126: Independent Source
SA (Spectrum Analyzer) Mode SA Mode Settings Listen Time While Tune & Listen is actively demodulating a signal, the SA does not sweep and update the display. Listen Time sets the amount of time that the FieldFox demodulates, then stops to perform a single sweep and update the display, then again demodulates.
Page 127 SA (Spectrum Analyzer) Mode SA Mode Settings Independent Source can be enabled ONLY when the FieldFox is in SA mode. — To view the internal source, you must connect a cable or device between the RF Output connector and the RF Input connector. The FieldFox output power is approximate and NOT flat across the frequency range.
Page 128: Resolution Bandwidth (Res Bw)
SA (Spectrum Analyzer) Mode SA Mode Settings — Source CW Freq Sets the CW frequency that is used when Source Mode is set to CW. By default, the source output will turn off momentarily at the end of each SA sweep. To cause the source to stay ON at the end of each sweep, turn battery saver OFF.
Page 129: Video Bandwidth (Video Bw)
SA (Spectrum Analyzer) Mode SA Mode Settings Video Bandwidth (Video BW) Video BW is a smoothing operation that is performed after measurement data is acquired. The trace data is effectively smoothed so that the average power level of the displayed noise is the same, but the peaks and valleys of adjacent data points are smoothed together.
Page 130: Sweep Acquisition
SA (Spectrum Analyzer) Mode SA Mode Settings — Then choose from the following: — Auto The FieldFox selects the most efficient sweep type based on the Res BW. When Res BW is set to 200 kHz and below, FFT sweep type is selected.
Page 131: Very Long Sweep Times
SA (Spectrum Analyzer) Mode SA Mode Settings How to set Sweep Acquisition Parameter — Press Sweep 3. — Then SwpAcquisition Auto Man. — Then choose from the following: ——Auto Sweep is set to the fastest sweep possible with the current settings.
Page 132 SA (Spectrum Analyzer) Mode SA Mode Settings Figure 8-5 GSM Signal, Framed Data Format The graphic above shows a GSM signal, framed data format, with timeslot 0 and 3 “on”. Sweep Time is set to approximately the frame interval. Press Single several times until the waveform section of interest is viewable and stable.
Page 133: Triggering
SA (Spectrum Analyzer) Mode SA Mode Settings Triggering External and Video triggering allows you to start a FieldFox sweep which is initiated by an external event such as a signal burst. External and Video triggering can be used in either Zero Span (time domain) or frequency span measurements.
Page 134 SA (Spectrum Analyzer) Mode SA Mode Settings Trigger Delay After a valid External or Video trigger signal is received, the sweep begins after the specified Trigger Delay time. Only positive values are allowed. To see the rising edge of a repetitive signal which is triggered on that edge, use trigger delay to clearly view the subsequent signal one period later.
Page 135: Single / Continuous / Restart
SA (Spectrum Analyzer) Mode SA Mode Settings — Then Auto Trigger [current setting]. — Enter an Auto Trig Time using the numeric keypad. — Then select a multiplier key. See “Multiplier Abbreviations” on page 2-14. Single / Continuous / Restart The following behavior is unique to SA Mode.
Page 136: Trace Display States
SA (Spectrum Analyzer) Mode SA Mode Settings — Then choose from: 101 | 201 | 401 | 601 | 801 | 1001. Trace Display States In SA Mode you can display up to four of the following types of trace states. All SA settings are applied to all displayed traces.
Page 137: Average Type
SA (Spectrum Analyzer) Mode SA Mode Settings Average Type In SA Mode, there are four different processes in which Averaging is performed: — Average Traces – Learn more in “Averaging” on page 8-37. — Detection Method Averaging – Learn more in “Detection Method”...
Page 138: Detection Method
SA (Spectrum Analyzer) Mode SA Mode Settings How to set Average Count — Press Meas Setup 4. — Then Average Count. — Enter a value from 1 to 10,000 using the numeric keypad, the arrows, or the rotary knob. — Press Enter. Detection Method In SA Mode, the X-axis is comprised of data points, also known as “buckets”.
Page 139: Display Line
SA (Spectrum Analyzer) Mode SA Mode Settings How to set Detection Method The current Detection method is labeled on the left edge of the screen. When a method is selected manually, a # precedes the label. For example: # Nrm means that Normal was selected from the softkeys.
Page 140: Noise Marker
SA (Spectrum Analyzer) Mode SA Mode Settings Figure 8-7 Display Line with Annotations How to create and move a Display Line — Press Limit __8. — Then Display Line OFF — Then enter a Y-axis value using the arrows or the rotary knob, then press Enter.
Page 141: Band/Interval Power Marker
SA (Spectrum Analyzer) Mode SA Mode Settings With a Noise Marker present, the Res BW can be changed and the displayed noise floor will also change, but the Noise Marker readout will remain about the same. Noise Markers can be used like regular markers. A Noise Marker is distinguished from a regular marker by (1Hz) after the marker readout value.
Page 142: Frequency Counter At Marker
SA (Spectrum Analyzer) Mode SA Mode Settings — Then Marker Function. — Then Band/Int Power. — Then Band (or Interval) Span. — Then choose from the following: — Auto Measures power over 5% of the displayed span, or ½ graticules. The Band Span is automatically updated to remain at 5% when you change the frequency span.
Page 143: Audio Beep At Marker Power
SA (Spectrum Analyzer) Mode SA Mode Settings Audio Beep at Marker Power When enabled, the Audio Beep feature emits a repetitive beep sound which varies in tone pitch and repetition rate to indicate the relative power level of the active marker. The highest tone pitch and fastest beep rate occurs when the marker Y-axis position is at the top of the display.
Page 144 SA (Spectrum Analyzer) Mode SA Mode Settings changed while in sweep Hold mode. The annotation is changed immediately, but the trace is not updated until the next sweep occurs. Therefore, the current data trace does not match the screen annotation. See the asterisk in Figure 8-1 on page 8-1.
Page 145: Channel Measurements
SA (Spectrum Analyzer) Mode Channel Measurements Channel Measurements The following Channel Measurements are offered in SA Mode: “Channel Power (CHP)” on page 8-38 “Occupied Bandwidth” on page 8-40 “Adjacent Channel Power Ratio (ACPR)” on page 8-42 Radio Standards and Channel Measurements To tune the frequency range of any of the Channel Measurements using channels instead of frequency, first select a Radio Standard, then select Units = CHAN.
Page 146: Traces
SA (Spectrum Analyzer) Mode Channel Measurements — Trace State is set to Average. — Detector is set to Average. — Count is set to 15. Any of these settings can be changed manually during a Channel measurement. Learn more about these settings starting in “Average Type”...
Page 147 SA (Spectrum Analyzer) Mode Channel Measurements Figure 8-8 Channel Power Measurement The following two Channel Power levels are displayed: — Channel Power - measures total power over the specified Integrated BW. — Power Spectral Density – same measured power, but mathematically normalized to a 1 Hz bandwidth using the same algorithm as Noise Marker.
Page 148 SA (Spectrum Analyzer) Mode Channel Measurements By default, the displayed frequency span is automatically coupled to the Integration Bandwidth. As you change the Integration Bandwidth, the frequency span is adjusted so that the vertical posts appear to NOT move. However, when you manually change the frequency span, the Integration Bandwidth is no longer coupled to the frequency span.
Page 149 SA (Spectrum Analyzer) Mode Channel Measurements Figure 8-9 Occupied Bandwidth Measurement The graphic above shows an OBW measurement; Chan 190 Downlink; GSM850 Radio Standard How to Select Occupied Band wid th — Press Measure__1. — Then Channel Measurements. — Then Occupied When Occupied Bandwidth is selected, the following settings are maintained from a previous measurement: Center Frequency, Preamp ON|OFF, and RF...
Page 150 SA (Spectrum Analyzer) Mode Channel Measurements — Then Freq Span. — Enter a value using the numeric keypad, arrows, or the rotary knob. — Press Enter. Power Percent This setting specifies the percentage of total measured power to display between the vertical posts. The measurement defaults to 99% of the occupied bandwidth power.
Page 151 SA (Spectrum Analyzer) Mode Channel Measurements Figure 8-10 GSM 850-Ch 251-Up with one Offset In the graphic above, frequencies (MHz) are added to illustrate offset and integ BW. Data in the ACPR graphical chart is always presented in dBm for the carrier, and dBc (dB below the carrier) for the offsets.
Page 152 SA (Spectrum Analyzer) Mode Channel Measurements Frequency Range/Channel When a Radio Standard is selected, the appropriate center frequency or channel and span is set automatically. The frequency or channel number can then be changed from the Freq/Dist menu. Learn how to select a Radio Standard and channels on page 8-6 page...
Page 153 SA (Spectrum Analyzer) Mode Channel Measurements How to set limits for adjacent channels You can set a unique threshold power for each of the offsets that will cause a FAIL indication (RED bar). This occurs when the calculated dBc power (on top of the offset bar) is ABOVE the specified level.
Page 154 SA (Spectrum Analyzer) Mode Channel Measurements —Then enter a value to be used to reference the data using the numeric keypad, arrows, or the rotary knob. Other ACPR Settings All relevant FieldFox settings are made automatically to ensure the highest accuracy, such as ResBW, VideoBW, and sweep (SwpAcquisition) speed.
Page 155 SA (Spectrum Analyzer) Mode Channel Measurements — Enter a value between 0 (no smoothing) and 1 (most smoothing) using the numeric keypad, arrows, or the rotary knob. A standard level of filtering is 22. — Press Enter. Keysight N9912-90001 User’s Guide 8- 47...
Page 156 SA (Spectrum Analyzer) Mode Channel Measurements 8- 48 Keysight N9912-90001 User’s Guide...
Page 157 Keysight Handheld Analyzers N9912A User’s Guide Interference Analyzer (SA Mode) – Option 236 Option 236 provides Spectrogram display, Waterfall display, and Record/Playback. In this Chapter “Spectrogram Display” on page 9-2 “Common Settings for Waterfall and Spectrogram” on page 9-3 “Waterfall Display” on page 9-5 “About Sessions”...
Page 158: Interference Analyzer (Sa Mode) - Option 236
Interference Analyzer (SA Mode) – Option 236 Spectrogram and Waterfall Displays Spectrogram and Waterfall Displays Spectrogram and Waterfall displays provide a visual history of the measured spectrum. Each display type can be used to locate intermittent signals or to view signal levels and frequencies over time. Spectrogram is a single horizontal line of color-coded power while Waterfall uses a 3-D color-coded display.
Page 159: Common Settings For Waterfall And Spectrogram
Interference Analyzer (SA Mode) – Option 236 Spectrogram and Waterfall Displays — Sweep Time (Acquisition). Learn more in “Sweep Acquisition” on page 8-22. — Resolution (Number of Points). Learn more in “Points” on page 8-27. How to select Spectrogram — Press Meas 1. —...
Page 160 Interference Analyzer (SA Mode) – Option 236 Spectrogram and Waterfall Displays — Blue = Lowest power levels The full Red-to-Blue color spectrum is visible only with Indoor display colors. Learn more in “Display Colors” on page 5 Adjust the Red and Blue limits to the power levels that you expect to measure. The Blue limit must always be less than the Red limit.
Page 161 Interference Analyzer (SA Mode) – Option 236 Spectrogram and Waterfall Displays — An invalid (very large number) appears when a trace record is not available at one or both of these markers. How to Restart the Spectrogram/Waterfall Press Sweep 3 then Restart. Averaging Averaging can be enabled on the underlying measurement.
Page 162 Interference Analyzer (SA Mode) – Option 236 Spectrogram and Waterfall Displays — Frequency Range. Learn more in “Frequency Range” on page 8-4. — Resolution BW and Video BW. Learn more in “Resolution Bandwid th (Res BW)” on page 8-20 “Video Bandwidth (Video BW)” on page 8-21.
Page 163: Record/Playback
Interference Analyzer (SA Mode) – Option 236 Spectrogram and Waterfall Displays Record/Playback Record Playback allows you to record SA trace sweeps and play them back at a later time. Use this feature to monitor spectrum activity over a period of time. You can record traces continuously, record a specified number of traces (segments), or record when triggered by a specified power level.
Page 164 Interference Analyzer (SA Mode) – Option 236 Spectrogram and Waterfall Displays To view and edit the maximum number of records Just after opening or initiating a session... — Press Session Data. — Then TraceRecordLimit <n> (n = Max number of traces that can be recorded).
Page 165 Interference Analyzer (SA Mode) – Option 236 Spectrogram and Waterfall Displays About State and User Tags When any of the State settings (listed above) are changed during a recording, a ‘state tag’ is inserted at the first trace number to be recorded with the new setting.
Page 166 Interference Analyzer (SA Mode) – Option 236 Spectrogram and Waterfall Displays — Then Record Playback Setup. — Optionally set resolution (points). Learn how in “Points” on page 8-27. This can NOT be changed after a session is opened. — Then either: —...
Page 167 Interference Analyzer (SA Mode) – Option 236 Spectrogram and Waterfall Displays — Playback State/Tag Allows you to continue playback from a state tag, or scroll through the state tags. Enter a value between 1 and the total number of state tags using the numeric keypad, arrows, or the rotary knob.
Page 168 Interference Analyzer (SA Mode) – Option 236 Spectrogram and Waterfall Displays — Record Interval Sets the amount of time to wait between individual trace recordings. Default is MIN, which is to wait 0 seconds (record traces as fast as possible). Enter a value in seconds between 0 (no delay) and 10,000 seconds - about 3 hrs) using the numeric keypad, arrows, or the rotary knob.
Page 169 Interference Analyzer (SA Mode) – Option 236 Spectrogram and Waterfall Displays A mask that is in use during a recording is NOT saved with the recording and does NOT automatically appear during playback. Like Limits Lines, it is saved and recalled with a state file. Although they are created in the same manner, Limit Line files and FreqMask files can NOT be used interchangeably.
Page 170 Interference Analyzer (SA Mode) – Option 236 Spectrogram and Waterfall Displays — Data can be recorded at the Raw Meas block where data is acquired after ResBW, VideoBW, and Detector processing, but before any trace state processing. — Data can be recorded from Traces 1,2,3, or 4 which includes the trace state (Max Hold, Min Hold, and so forth).
Page 171 Interference Analyzer (SA Mode) – Option 236 Spectrogram and Waterfall Displays — SD Card An external SD Card (must be inserted). — An external USB flash drive (must be inserted). — Then Manage Sessions. — Then choose from the following: —...
Page 172 Interference Analyzer (SA Mode) – Option 236 Spectrogram and Waterfall Displays — Then Record Playback. — Then Play. Play the Max Hold recording into a Max Hold trace to show the accumulation of “Max Hold” activity over the entire recording. —...
Page 173 Keysight Handheld Analyzers N9912A User’s Guide 10 Channel Power Meter Mode - Option 311 Channel Power Meter (also known as CPM or Built-in Power Meter) uses the RF IN connector to make quick and simple power measurements over a selectable frequency span. A power sensor is NOT required. In this Chapter “How to select Reflection Mode”...
Page 174 Channel Power Meter Mode - Option 311 The following CPM settings are identical to the standard Power Meter settings. Learn more about these settings: “Scale” on page 11-5 “Relative and Offset Power Measurements” on page 11-6 “Display Units” on page 11-6 “Averaging”...
Page 175: Channel Power Meter Mode - Option 311
Channel Power Meter Mode - Option 311 CPM Settings CPM Settings Connect the power to be measured to the RF IN port on the FieldFox top panel. Select CPM Mode before making any setting in this section. How to select Reflection Mode —...
Page 176: Radio Standard
Channel Power Meter Mode - Option 311 CPM Settings — Optionally press Span(Ch Wid). Type a value using the numeric keypad. Then press a multiplier key. The default span is 2 MHz. The maximum measurement span is 100 MHz. The current span setting is shown as the dividend in the digital display.
Page 177 Channel Power Meter Mode - Option 311 CPM Settings “Display Units” on page 11-6 “Averaging” on page 11-7 “Single or Continuous Measure” on page 11-7 “Limits” on page 11-8 Keysight N9912-90001 User’s Guide 10- 5...
Page 178 Channel Power Meter Mode - Option 311 CPM Settings 10-6 Keysight N9912-90001 User’s Guide...
Page 179: Power Meter Mode (Option 302)
Keysight Handheld Analyzers N9912A User’s Guide 11 Power Meter Mode (Option 302) Power Meter measurements are made with Keysight USB power sensors. Power readings are displayed on the FieldFox screen. In this Chapter “Supported Power Sensors” on page 11-2 “How to Connect the Power Sensor” on page 11-2 “Average / Peak”...
Page 180: Supported Power Sensors
Power Meter Mode (Option 302) Supported Power Sensors “Step Detection Mode” on page 11-8 “Limits” on page 11-8 See Also “FOPS Settings” on page 12-5 Supported Power Sensors The FieldFox does NOT support the following Keysight USB Power Sensor features: External Triggering (Time Gated Burst Power Measurement), Power Sweep Operation, and Frequency Sweep Operation.
Page 181: Power Meter Settings
Power Meter Mode (Option 302) Power Meter Settings Power Meter Settings Select Power Meter Mode before making any setting in this section. How to select Power Meter Mode — Press Mode_. — Then Power Meter (USB Sensor). Average / Peak —...
Page 182: Frequency
Power Meter Mode (Option 302) Power Meter Settings In addition, once External Zeroing has started, the power source must be OFF for the entire time that the Zeroing message is present. Otherwise, the calibration will be compromised but NO warning is shown. Frequency A table of correction factors versus frequency is stored within Keysight Power Sensors.
Page 183: Scale
Power Meter Mode (Option 302) Power Meter Settings — Then Advanced. When Option 208 (FOPS) is enabled, to access Source Control, press Sweep 3. Then Power Setup Learn more about “Frequency Offset Using Power Sensor (FOPS) – Option 208” on page 12-1 —...
Page 184: Relative And Offset Power Measurements
Power Meter Mode (Option 302) Power Meter Settings Relative and Offset Power Measurements Power measurements can be made that are relative to another reading or that are offset by a fixed value. — Use Relative to measure the difference between power levels. —...
Page 185: Averaging
Power Meter Mode (Option 302) Power Meter Settings How to set Resolution — Press Scale / Amptd. — Then More. — Then choose from 0, 1, 2, or 3. Averaging Averaging is used to improve measurement accuracy in low power or noisy power situations.
Page 186: Step Detection Mode
Power Meter Mode (Option 302) Power Meter Settings You can also use Run / Hold +/- to toggle between Single and Continuous. Step Detection Mode The FieldFox supports the Step Detection feature that is present in U2000 series power sensors. When enabled, this feature reduces settling time after a significant step in the measured power.
Page 187: 12 Frequency Offset Using Power Sensor (Fops) - Option
Keysight Handheld Analyzers N9912A User’s Guide 12 Frequency Offset Using Power Sensor (FOPS) – Option FOPS is accessed through (and requires) Option 302 USB Power Meter Mode. With both options installed, you can send a signal with the FieldFox internal source at one frequency, and measure this signal with a Keysight U-Series USB Power Sensor at another frequency.
Page 188 Frequency Offset Using Power Sensor (FOPS) – Option 208 “Amplitude Markers” on page 12-9 “Trace Math” on page 12-9 See Also “All about Trace Math” on page 16-19 12- 2 Keysight N9912-90001 User’s Guide...
Page 189: Overview
Frequency Offset Using Power Sensor (FOPS) – Option 208 Overview Overview This feature allows the FieldFox source frequency to be set independently from the power sensor (receiver) frequency. With frequency offset using power sensor (FOPS), the frequency of both the source and receiver are swept, and the two track each other.
Page 190 Frequency Offset Using Power Sensor (FOPS) – Option 208 Overview The dynamic range with FOPS may be significantly different when using various power sensors. In general, the lower frequency range sensors have better dynamic range. 12- 4 Keysight N9912-90001 User’s Guide...
Page 191: Fops Settings
Frequency Offset Using Power Sensor (FOPS) – Option 208 FOPS Settings FOPS Settings The following settings are unique to FOPS. Standard USB Power Meter mode settings, which may be useful with FOPS, are documented in that chapter starting on page 11-3.
Page 192: Sweep Type And Frequency
Frequency Offset Using Power Sensor (FOPS) – Option 208 FOPS Settings — Gain Not available until source data is stored into memory. Displays the Output power / Source power (memory trace). — Rx Power Displays the raw received power at the USB power sensor. Sweep Type and Frequency Set the source and receiver frequencies for the FOPS measurements.
Page 193 Frequency Offset Using Power Sensor (FOPS) – Option 208 FOPS Settings ——Then Freq Display. This determines how the receiver frequencies below the graticules are displayed. Choose from the following: ——Start Annotated as Start and Stop frequencies. ——Center Annotated as Center and Span frequencies. ——Then choose from the following two methods to determine the offset frequency (the frequency that the receiver is offset from the source).
Page 194: Power Sensor Settling
Frequency Offset Using Power Sensor (FOPS) – Option 208 FOPS Settings Src = 2 GHz to 3 GHz Offset = 3.8 GHz Rx = 5.8 GHz to 6.8 GHz Power Sensor Settling The following two settings work together to allow you to choose the right compromise between measurement speed and accuracy.
Page 195: Amplitude Markers
Frequency Offset Using Power Sensor (FOPS) – Option 208 FOPS Settings — Num Points Freq Step Size Both settings control the number of power sensor measurements between the Start and Stop frequencies. Enter one setting and the other will be changed automatically. There must be at least two data points.
Page 196 Frequency Offset Using Power Sensor (FOPS) – Option 208 FOPS Settings 3. View Data & Memory 4. Meas Src Power. 12- 10 Keysight N9912-90001 User’s Guide...
Page 197 Keysight Handheld Analyzers N9912A User’s Guide 13 Pulse Measurements Mode – Option 330 Pulsed power meter measurements, available with Option 330, are made with Keysight U2020 X-Series USB Peak Power Sensors. These sensors are capable of detecting, measuring, and storing data from a train of pulses at the RF input. This data is queried from the USB Power Sensor and displayed on the FieldFox screen.
Page 198 Pulse Measurements Mode – Option 330 “Marker Settings” on page 13-11 “Amplitude Markers” on page 13-11 “Pulse Top” on page 13-14 “Grid” on page 13-14 “Trace Memory” on page 13-14 Many of the features included with the FieldFox Pulse Measurements Mode are discussed in detail in these two documents: —...
Page 199: Pulse Measurements Mode - Option 330
Pulse Measurements Mode – Option 330 Supported Power Sensors Supported Power Sensors Pulse measurements are made using any of the Keysight U2020 X-Series USB Peak Power Sensors. Zeroing of the U2020 X-Series USB Peak Power Sensors is performed automatically at power up, every 5 seconds, and prior to measuring low level signals.
Page 200: Pulse Measurement Settings
Pulse Measurements Mode – Option 330 Pulse Measurement Settings Pulse Measurement Settings Select Pulse Measurement Mode before making any setting in this section. How to select Pulse Measurement Mode — Press Mode. — Then More if your FieldFox contains more than five measurement modes. —...
Page 201: Zoom Window
Pulse Measurements Mode – Option 330 Pulse Measurement Settings — Frequency Sets the center frequency of the carrier on which pulse modulation resides. This is used to set amplitude correction of the USB Power Sensor. How to set Time Specify the time over which data will be acquired by the USB Power Sensor. When Trace Graph is selected, Tr 1 is annotated with these values.
Page 202: Scale
Pulse Measurements Mode – Option 330 Pulse Measurement Settings — Zoom Time/d iv While monitoring the blue vertical posts on the primary trace, enter a value for the zoom window span using the numeric keypad, the ?|? arrows, or the rotary knob. —...
Page 203: Video Bandwidth
Pulse Measurements Mode – Option 330 Pulse Measurement Settings Annotation in the left pane shows the state of the Average setting. When Manual is selected, the ‘Num of Averages’ is setting is also shown. How to set Averaging — Press BW 2. —...
Page 204: Resolution
Pulse Measurements Mode – Option 330 Pulse Measurement Settings How to set Single or Continuous — Press Sweep 3. — Then choose one of the following: — Single Automatically sets Continuous OFF and causes the FieldFox to query the USB Power Sensor ONCE, then hold for the next Single key press.
Page 205 Pulse Measurements Mode – Option 330 Pulse Measurement Settings — Then Trig Type. — Then choose from the following: — Freerun The USB Power Sensor acquires data without waiting for a trigger. This mode is NOT supported for Trace Graph measurements. —...
Page 206 Pulse Measurements Mode – Option 330 Pulse Measurement Settings — Then Auto Trigger. — Then choose from the following: — Trigger level is determined by the USB Power Sensor firmware. — The trigger level is set manually using the Trigger Level setting. Trigger Level Used when Trigger Type = Internal AND Auto Trigger = OFF (Manual).
Page 207: Marker Settings
Pulse Measurements Mode – Option 330 Pulse Measurement Settings Marker Settings Markers are not allowed with Meter-style measurements. Markers are displayed on Tr 1 and also on the zoom trace if the marker is within the zoom window time span. Up to six standard markers can be used to provide readouts of the Y-axis amplitude at the current X-axis location.
Page 208: Marker Search
Pulse Measurements Mode – Option 330 Pulse Measurement Settings — Press Delta Ampl Mkr. — Then choose from the following: — AmplMkr 2 value is relative to AmplMkr 1. When AmplMkr 1 is moved, AmplMkr 2 also moves to maintain the AmplMkr 2 value between them.
Page 209: Auto Analysis
Pulse Measurements Mode – Option 330 Pulse Measurement Settings Auto Analysis Auto Analysis reports the following TEN pulse measurements: 1 - Average Power Average power level of all measured data points 2 - Peak Power Highest reading of all measured data points 3 - Peak minus Difference between the above two...
Page 210: Pulse Top
Pulse Measurements Mode – Option 330 Pulse Measurement Settings Pulse Top Pulse Top is NOT the same as the pulse Peak. Pulse Top is used to set and report the reference power level. You enter a value in percent, and the Pulse Top value is reported in the Auto Analysis table in dB down from 100% of the reference power level.
Page 211 Pulse Measurements Mode – Option 330 Pulse Measurement Settings — Then Trace Memory. — Then Data->Mem to store the current live trace into memory. A ‘beep’ sounds to confirm the data trace has been saved to memory. There is no display annotation that indicates that the memory trace has been stored.
Page 212 Pulse Measurements Mode – Option 330 Pulse Measurement Settings 13-16 Keysight N9912-90001 User’s Guide...
Page 213 Keysight Handheld Analyzers N9912A User’s Guide 14 VVM (Vector Voltmeter) Mode - Option 308 VVM Mode measures the electrical length of cables and other devices. The 1-Port Cable Trimming application displays the electrical length in both Magnitude and Phase. The 2-Port Transmission measurement displays Magnitude ONLY.
Page 214 VVM (Vector Voltmeter) Mode - Option 308 “Single or Continuous Measure” on page 14-7 “Zeroing” on page 14-8 Procedures “1-Port Cable Trimming Measurements ” on page 14-9 “2-Port Transmission Measurements” on page 14-11 14- 2 Keysight N9912-90001 User’s Guide...
Page 215: Vvm (Vector Voltmeter) Mode - Option 308
VVM (Vector Voltmeter) Mode - Option 308 Overview Overview In the FieldFox, both 1-port and 2-port measurement types use a different configuration setup from the HP/Keysight 8508A Vector Voltmeter. Figure 14-2 Typical 8508A measurement configuration –as shown in the 8508A manual. The above block diagram requires an external source and directional coupler to measure the electrical length of a DUT or cable to be trimmed.
Page 216: Vvm Mode Settings
VVM (Vector Voltmeter) Mode - Option 308 VVM Mode Settings VVM Mode Settings Select VVM Mode before making any setting in this section. How to select VVM Mode — Press Mode. — Then VVM. Measurement Selection How to select a VVM Measurement —...
Page 217: Display Resolution
VVM (Vector Voltmeter) Mode - Option 308 VVM Mode Settings Display Resolution You can display either one digit or two digits after the decimal point for both magnitude and phase readings. This setting survives a Preset and Mode Preset. How to set Resolution —...
Page 218 VVM (Vector Voltmeter) Mode - Option 308 VVM Mode Settings For best measurement accuracy, use the Manual power setting at -15 dBm. After calibration, the power level can be decreased for amplifiers, or increased for higher dynamic range. Power Level settings in this mode will NOT change Power Level settings in other modes.
Page 219: Averaging
VVM (Vector Voltmeter) Mode - Option 308 VVM Mode Settings Averaging Averaging helps to reduce the effects of random noise on a measurement. The FieldFox computes the displayed value over several consecutive readings. Average count determines the number of readings to average. The higher the average count, the greater the amount of noise reduction.
Page 220: Vvm Calibration
VVM (Vector Voltmeter) Mode - Option 308 VVM Mode Settings VVM Calibration In VVM Mode, calibration is performed in the same manner as in CAT and NA Modes. In summary, a Preset Cal is sufficient when the DUT is connected directly to the FieldFox RF Out test port.
Page 221: 1-Port Cable Trimming Measurements
VVM (Vector Voltmeter) Mode - Option 308 1-Port Cable Trimming Measurements 1-Port Cable Trimming Measurements A 1-Port Cable Trimming measurement is used in a cable fabrication procedure to validate proper electrical length. — The R receiver measures incident signal (green line) out of the source. —...
Page 222 VVM (Vector Voltmeter) Mode - Option 308 1-Port Cable Trimming Measurements 9. Press Marker then scroll the marker to the VVM frequency. The Y-axis value is the phase difference in degrees between the Open standard and the Short standard at that frequency. Remember this value! 10.Press Mode then VVM.
Page 223: 2-Port Transmission Measurements
VVM (Vector Voltmeter) Mode - Option 308 2-Port Transmission Measurements 2-Port Transmission Measurements A 2-Port Transmission measurement is used for measuring electrical length, insertion loss, gain, or isolation of a device. The FieldFox signal source is transmitted out the RF OUT connector, through the DUT, and into the RF IN connector.
Page 224 VVM (Vector Voltmeter) Mode - Option 308 2-Port Transmission Measurements 14- 12 Keysight N9912-90001 User’s Guide...
Page 225: Channel Scanner (Sa Only And Option 312)
Keysight Handheld Analyzers N99xxA User’s Guide 15 Channel Scanner (SA Only and Option 312) In this Chapter: “Using Channel Scanner” on page 15-1 “How to Set Up Channel Scanner” on page 15-2 Using Channel Scanner Channel Scanner enables you to do the following: Measure and d isplay channel power vs.
Page 226: How To Set Up Channel Scanner
Channel Scanner (SA Only and Option 312) How to Set Up Channel Scanner Figure 15-1 Display Example: Measure 5 Channels Spaced 2 MHz Apart How to Set Up Channel Scanner This section briefly reviews the steps in setting up a channel scan measurement.
Page 227 Channel Scanner (SA Only and Option 312) How to Set Up Channel Scanner Press Scale/Amptd Then one of the following: — Red Limit to set the power level and color scale for high power channels. — Blue Limit to set the power level and color scale for low power channels.
Page 228: How To Define A Channel And Use Channel Scanner
Channel Scanner (SA Only and Option 312) How to Set Up Channel Scanner ——List files (*.csv and *.kml) are save-recalled to: "CurrentDevice\ChannelScanner\ChannelS canner\RecordPlayback\" ——Record-Play files are save-recalled to: "CurrentDevice\ChannelScanner\ChannelS canner\RecordPlayback\" — System – Sets the User Folder to the user defined system folder path/name: ——List files are save to-from "CurrentDevice\<UserSelectedFolder>\"...
Page 229 Channel Scanner (SA Only and Option 312) How to Set Up Channel Scanner — “Step 6: Import and Play back KML Files into 3rd Party Software (Example: Google Earth with Animation Tool)” on page 15-14 Figure 15-2 Channel Definition Step 1A: Scan Mode: Range Channel Defined 1.
Page 230 Channel Scanner (SA Only and Option 312) How to Set Up Channel Scanner Figure 15-3 Range Table Settings 3. Press Done Step 1B: Scan Mode: Custom List Channel Defined 1. Define some channels: Press Measure > Scan Mode > Custom List 2.
Page 231 Channel Scanner (SA Only and Option 312) How to Set Up Channel Scanner Figure 15-4 Custom List Table Settings 3. Press Done 4. Press Save Recall List > Save List to save a custom list. See also “How to use the FieldFox labeler” on page 17-3.
Page 232 Channel Scanner (SA Only and Option 312) How to Set Up Channel Scanner Figure 15-5 Bar Chart Vertical Display Type Figure 15-6 Bar Chart Horizontal Display Type Keysight N9912-90001 User’s Guide...
Page 233 Channel Scanner (SA Only and Option 312) How to Set Up Channel Scanner Figure 15-7 Channel Power Display Type Figure 15-8 Strip Chart Display Type Keysight N9912-90001 User’s Guide...
Page 234 Channel Scanner (SA Only and Option 312) How to Set Up Channel Scanner Figure 15-9 Strip Chart Overlay Display Type Figure 15-10 Scan & Listen Display Type Keysight N9912-90001 User’s Guide...
Page 235 Channel Scanner (SA Only and Option 312) How to Set Up Channel Scanner Step 3. Modify Scale and the Display Color Bar Settings To assign colors to low and high power values: 1. Press Scale/Amptd > Red Limit to set high power values and to set the color.
Page 236 Channel Scanner (SA Only and Option 312) How to Set Up Channel Scanner Figure 15-12 Indoor Display Colors Step 4: Enable Data Logging and Record Results Data logging records your data with a timestamp and GPS stamp (refer to “GPS” on page 18-12).
Page 237 Channel Scanner (SA Only and Option 312) How to Set Up Channel Scanner — Time Interval 1 sec to 3,000 seconds or — Distance Interval from 1m to 10 km — When done, press Back 3. Press Save Recall Rec-Playback >...
Page 238 Channel Scanner (SA Only and Option 312) How to Set Up Channel Scanner — Blue Limit to change the color bar. 3. Press Stop to stop the log recording. To View the spectrogram of recorded results: 1. Press View 2. Then choose: —...
Page 239 Channel Scanner (SA Only and Option 312) How to Set Up Channel Scanner — Open the FieldFox *.KML file in Google Earth. Time Slider appears in upper left of the map. — Manual Mode – Move the time slider cursor to see color-coded icons pop-up according to the timestamp.
Page 240 Channel Scanner (SA Only and Option 312) How to Set Up Channel Scanner Keysight N9912-90001 User’s Guide...
Page 241 Keysight Handheld Analyzers N9912A User’s Guide 16 Data Analysis Features The following features can be used after a measurement to analyze the results. In this Chapter “All about Markers” on page 16-2 “About Delta Markers” on page 16-3 “Marker Table” on page 16-4 “Coupled Markers (NA Mode)”...
Page 242: Data Analysis Features
Data Analysis Features All about Markers All about Markers Markers move along the X-axis range of the measurement trace to provide a numerical readout of each measured data point. Markers also allow you to search for specific Y-axis values. A trace can contain up to six markers. The marker readout on the FieldFox screen displays X and Y-axis information for the current active marker ONLY.
Page 243: About Delta Markers
Data Analysis Features All about Markers Figure 16-1 Marker 2 is Active, marker 1 is NOT active. About Delta Markers A Delta marker provides X-and Y-axis readout information that is relative to a ‘reference’ marker. A Delta marker is created with a Δ (delta symbol) to distinguish it from the reference marker.
Page 244: Marker Table
Data Analysis Features All about Markers How to Create a Delta Marker — Create a Normal marker and move it to the reference position. — Press Delta. The marker becomes the reference marker and fixed in its X-Axis position. — Move the Delta marker using the numeric keypad, the arrows, or the...
Page 245: Coupled Markers (Na Mode)
Data Analysis Features All about Markers Coupled Markers (NA Mode) Coupled Markers, available in NA mode only, allows you to simultaneously create and move markers that have the same number for all traces. For example, when marker 2 is created on a trace, a marker 2 is created for ALL traces.
Page 246: Marker Colors
Data Analysis Features All about Markers Marker Colors As shown in the above image, in NA and CAT Modes, markers are the same color as the trace to which they are assigned. In SA Mode, the marker color is NOT the same as the trace. Marker colors can NOT be changed.
Page 247: Marker Format
Data Analysis Features All about Markers — When a marker is moved to a ‘blank’ trace (not visible) the marker moves to the same X-axis position at either the Y-axis position of the last data, or to the ZERO position. Marker Format The Marker Format setting allows you to choose the format of the marker readout that appears in the upper-right corner of the screen and in the marker...
Page 248 Data Analysis Features All about Markers How to Search with Markers The following menu structure applies to NA Mode. Keystrokes will be slightly different for CAT, Pulse Measurements, and SA Modes. — Activate the marker to be used for the search (NOT necessary with Bandwidth search.) —...
Page 249 Data Analysis Features All about Markers ——Negative values search down from the TOP (MAX) of the response. ——Positive values search up from the BOTTOM (MIN) of the notch. ——If you first enter Negative, then Positive values, it may be necessary to press Marker, then More, then Markers All Off.
Page 250: What Is A 'Peak
Data Analysis Features All about Markers After pressing Enter, four markers are automatically created to find the first negative or positive bandpass over the displayed frequency range. Bandwidth Search can be used ONLY with Log Mag display format. The following six values are displayed for Bandwidth Search: —...
Page 251 Data Analysis Features All about Markers These settings do NOT survive a FieldFox or Mode Preset. The Peak Threshold and Excursion settings are NOT available in DTF measurements. To make these settings, create a non-DTF CAT mode measurement, then change the measurement back to DTF. How to set Peak Criteria —...
Page 252: Marker Functions
Data Analysis Features All about Markers — Scale = 1 dB / Division. Peak A = Valid Peak (Above Threshold and Excursion Settings) Peak B = Invalid Peak (Below 1 dB Excursion Setting) Peak C = Invalid Peak (Below –10 dB Threshold Setting) Marker Functions Marker functions are used to change FieldFox frequency or distance settings to those of the active marker.
Page 253: Sa Marker Functions
Data Analysis Features All about Markers — Mkr=>Stop Distance The Stop Distance of the measurement becomes the value of the active marker. Markers that would no longer appear on the screen are moved to the new Stop Distance. SA Marker Functions The following Marker Functions are available in SA Mode ONLY: —...
Page 254: All About Limit Lines
Data Analysis Features All about Limit Lines All about Limit Lines Limit lines are visual representations, drawn on the FieldFox screen, of the specified limits for a measurement. With this capability, you can easily compare measured data versus specifications. Optionally, you can enable an audible beep and display Pass or Fail information for each measurement.
Page 255: Relative Limit Lines
Data Analysis Features All about Limit Lines ——Relative - the limit line moves relative to the center frequency and reference level. Note: It is easiest to first create Fixed Limits, then change this setting to Relative. Learn more “Relative Limit Lines” on page 16-15.
Page 256: Build From Trace
Data Analysis Features All about Limit Lines How to Create a Relative Limit Line The easiest way to create a Relative limit line is to create a Fixed Limit at a specific center frequency and reference level. Learn how “Relative Limit Lines” on page 16-15.
Page 257: Limit Options
Data Analysis Features All about Limit Lines Limit Options How to set Limit Options — Press Exit if the limit table is visible. — Then Options. — Then choose from the following: — Beep ——On Pass Audible beep sounds when a sweep passes. ——On Fail Audible beep sounds when a sweep fails.
Page 258 Data Analysis Features All about Limit Lines — Then press Limit. — Then choose from the following: — Save Limits After limit lines have been defined, this saves the line definition to a file on the specified device. — Recall Limits Recalls a limit Line definition from the specified device.
Page 259: All About Trace Math
Data Analysis Features All about Trace Math All about Trace Math Trace Math is available ONLY in CAT and NA Mode, but not in DTF measurements. A trace is a series of measurement data points that are connected to form a line.
Page 260: About Math Operations
Data Analysis Features All about Trace Math — Data – Mem D-M] Current measurement data is subtracted from the data in memory. — Data / Mem [D/M] Current measurement data is divided by the data in memory. — Math Off [Data] Displays trace data with NO math applied.
Page 261 Keysight Handheld Analyzers N9912A User’s Guide 17 File Management The FieldFox can save any of the following types of files: — Current settings and calibration — Trace data (*.csv, *.kml, and *.S1P) — Picture of the FieldFox screen In addition, files can be saved to the internal memory, a USB Flash drive, or a standardSD card.
Page 262: File Management
File Management Saving and Recalling Files Saving and Recalling Files FieldFox State files are intended to be recalled on the same instrument model on which they were saved. Sometimes you may able to recall them within model families. An error will result when trying to recall a state file that was saved on a different model family.
Page 263 File Management Saving and Recalling Files Insert only ONE USB Flash Drive in the FieldFox when saving or copying files. How to use the FieldFox labeler The FieldFox labeler is used to edit or change the current filename. It is also used for many other labeling functions, such as creating a title, prefix, and keyword to display on the FieldFox screen.
Page 264: Recall Files
File Management Saving and Recalling Files In the graphic above, the current filename is File_0. The cursor is on the custom DTF_VSWR keyword. The file will be saved to USB (flash drive). File Type is “Trace + State” (Instrument State). How to move the cursor —...
Page 265: Set File Type And Select Device
File Management Saving and Recalling Files — Navigate to the file to be recalled using the Up/Down arrow keys. — Then Recall File or Enter. Set File Type and Select Device The following File TYPE and DEVICE settings are used to determine the type of file to save, and the location to be used for all file operations.
Page 266 File Management Saving and Recalling Files — Picture (PNG) Saves a 640 x 453 pixel image of the FieldFox screen to a *.png file. The picture does NOT include the softkeys. — Data (csv) Saves trace data from the current Mode to a *.csv file. This format can be imported into spreadsheet software such as Microsoft Excel.
Page 267: Manage Files
File Management Saving and Recalling Files > Display formats In CAT Mode, S1P files are always Magnitude (dB) / Phase (angle) format. In NA Mode: — Smith chart and Polar display formats are ALWAYS saved in Real/Imag data pairs. — All other display formats are saved in LogMag/Phase (dbAngle). >...
Page 268: Manage Folders
File Management Saving and Recalling Files — Then choose from the following: For Copy File and Copy All Files, files are always copied to a subdirectory titled Copy_<date.time stamp> of when the file was copied. For example, “Copy_June.27.2013-00.40.47”. A new subdirectory is created every time a file is copied.
Page 269: Edit Keywords
File Management Saving and Recalling Files — Delete Folder The selected folder and its contents are deleted after a warning prompt is displayed. A “Parent” folder or system folder can NOT be deleted. — Press Exit when finished. Edit Keywords The preselected keywords (FILE, SITE, and so forth) can be edited to meet your specific needs.
Page 270: Prefixes For Filenames
File Management Saving and Recalling Files Prefixes for Filenames A prefix is used as a default filename to which characters can be added. The prefix can be customized, and quickly enabled or disabled. When enabled, the current prefix is automatically entered as the start of a filename when performing a Save operation.
Page 271: Printing
File Management Printing Printing The current screen or selected files can be printed using a PCL-compatible printer (like older HP Deskjet printer) connected to one of the FieldFox USB ports. Newer PCL3GUI photo and all-in-one printers are NOT supported. Measurements can also be printed using the FieldFox Data Link software. How to print the current screen or a saved file To save ink, first select an outdoor (white background) display color.
Page 272 File Management Printing 17- 12 Keysight N9912-90001 User’s Guide...
Page 273: 18 System Settings
Keysight Handheld Analyzers N99xxA User’s Guide 18 System Settings In this Chapter “Run/Hold” on page 18-2 “Preset” on page 18-3 “User Preset” on page 18-3 “Volume Control” on page 18-4 “Display Settings” on page 18-5 “Display Brightness” on page 18-5 “Display Colors”...
Page 274: Run/Hold
System Settings Run/Hold “Security Level” on page 18-16 “Date and Time, Format, and Time Zone Settings” on page 18-16 “LAN Settings” on page 18-18 “Power ON” on page 18-19 “FieldFox Package Installer (N9912A units with serial number prefixes ≥5607 Only)” on page 18-20 “Service Diagnostics”...
Page 275: Preset
System Settings Preset — SA Mode ONLY – With Continuous OFF each successive Run/Hold press also causes a single sweep. — Continuous ON OFF Makes continuous sweeps. This is the typical setting when battery power is not critical. Preset The Preset key restores the FieldFox measurement settings to a known condition.
Page 276: How To Set User Preset
System Settings Volume Control How to set User Preset — Make your custom settings for all modes. — When finished, press Preset. — Then Save User Preset, then select to confirm. — Then User Preset How to recall User Preset —...
Page 277: How To Set Fieldfox Volume Control
System Settings Display Settings How to set FieldFox Volume Control — Press System 7. — Then Volume. — Then use the arrows, the rotary knob, or numeric keypad to enter a value between 0 (lowest volume) and 100 (highest volume). —...
Page 278: Trace Width
System Settings Display Settings — Then Display Colors. — Then choose one of the following: Indoor Outdoor Dusk Outdoor Clouds Outdoor Sun Night Vision Trace Width You can set width of all displayed traces on the FieldFox. This may allow better viewing or enhance the look of screen images.
Page 279: Edit Keywords
System Settings Preferences How to add or edit a Title — Press System 7. — Then Display. — Then Title. — Then enter or edit a title using the FieldFox labeler. This is the same labeler function that is used to name files. Learn “How to use the FieldFox labeler”...
Page 280: Save And Reset Preferences
System Settings Preferences How to view and change Preference Quick Settings — Press System 7. — Then Preferences. — Then Preferences. — Press Next Page Previous Page to view all settings. — To change a setting: — Use the arrows to highlight a setting. —...
Page 281: Language
System Settings Preferences The table above shows a list of all of these settings and where they are discussed in this User’s Guide. How to save current settings as Preferences — Using softkeys, configure the settings as you would like them to remain. —...
Page 282: Battery Saver
System Settings Preferences How to setup Startup Mode — Press System 7. — Then Preferences. — Then Preferences. — Then scroll to Global Settings > Startup Mode and press — Then repeatedly press the Startup Mode to scroll through the available choices.
Page 283: System Configuration
System Settings System Configuration How to set File Folders — Press System 7. — Then Preferences. — Then Preferences. — Then scroll to User Folder Persist: — User Folder Persist (On/Off) – Defaults to the current Device and folder location at power up. Toggle User Folder Persist On/Off when a new Device location is selected location.
Page 284: Gps
System Settings System Configuration How to Install Options A.lic file must already be on a USB Flash Drive. Insert the USB Flash Drive in the FieldFox. — P r e s s System 7. — T h e n System Configuration.
Page 285 System Settings System Configuration How to make GPS settings — Press System 7. — Then System Configuration. — Then GPS. — Then choose from the following: — - Disable GPS (default setting). — External - Enable GPS using an external, customer-supplied, USB dongle device.
Page 286 System Settings System Configuration — The right portion of the screen displays Satellite Power Carrier to Noise (C/No) dBHz values on the tops of the satellite power chart. The C/No values returned are not calibrated at the factory or warranted for accuracy.
Page 287: Frequency Reference Source
System Settings System Configuration In the above image, the following icons show if the FieldFox is locked on satellites: GPS ON and locked on satellites GPS ON, but NOT locked on satellites GPS ON, but no GPS receiver is present or detected Saving Data with GPS Enabled GPS position and clock data are included when data is saved with the following files types: *.csv, *.SnP, State, State+Trace data save.
Page 288: Security Level
System Settings System Configuration When switched to Ext, if the FieldFox does NOT find an appropriate Ext or GPS reference signal, then Ext Ref UNLOCKED is displayed in the lower-left corner of the graticule area. This can occur when any of the following conditions exist: —...
Page 289 System Settings System Configuration How to Update Date and Time using Internet This method of setting the Date and Time does NOT have the security restrictions of the other methods (listed below). This method will NOT set the correct Time Zone. You must do that using the manual method.
Page 290: Lan Settings
System Settings System Configuration — Then press — Use the arrows or rotary knob to select the field to be edited. — Use the arrows or numeric keypad to edit that field. — Press Cancel Done when the edits are complete. —...
Page 291: Power On
System Settings System Configuration — Then LAN. — Use the arrows to select one of the following, then press — Hostname Change the name that can be used to address the FieldFox if your server supports this feature. The default hostname is generated automatically.
Page 292: Fieldfox Package Installer (N9912A Units With Serial Number Prefixes ≥5607 Only)
System Settings System Configuration How to set Power ON — Press System 7. — Then System Configuration. — Then Power — Then choose from the following: — Auto The FieldFox will power ON when a charged battery or the DC Adapter is inserted.
Page 293 System Settings System Configuration — When the installation is completed, the FieldFox reboots. How to backup files This procedure backs up your user data to a USB or SD card. See also “How to restore files” on page 18-21. If you backup multiple versions of the user files, the FieldFox appends a “_#”...
Page 294: Service Diagnostics
System Settings Service Diagnostics — A message is displayed: “This option will COMPLETELY ERASE existing user data. ARE YOU SURE?” — Then to return to the previous menu without restoring files. Press — Then choose either SD Card A progress bar and a message is displayed: “Restoring user data…” Service Diagnostics —...
Page 295 System Settings Service Diagnostics Internal Temperatures Learn about the importance of the internal FieldFox temperatures in “FieldFox High Temperature Protection” on page 2-4. Erase User Data All data that you have written to the FieldFox can be erased with the press of a button.
Page 296 System Settings Service Diagnostics 18- 24 Keysight N9912-90001 User’s Guide...
Page 297: Using The Mini-Usb Port To Send Scpi Commands And Queries (N9912A Units With Serial Number Prefixes ≥5607 Only)
Keysight Handheld Analyzers N99xxA User’s Guide 19 Using the Mini-USB Port to send SCPI Commands and Queries ( N9912A units with serial number prefixes ≥5607 Only In this Chapter “Mini-USB Connection to PC with IO Libraries” on page 1 Mini-USB Connection to PC with IO Libraries The FieldFox comes with a mini-USB port that can be used to connect to your PC’s standard USB 2.0 port.
Page 298 Using the Mini-USB Port to send SCPI Commands and Queries (N9912A units with serial number prefixes ≥5607 Only) Mini-USB Connection to PC with IO Libraries Figure 19-1 Keysight Interactive IO Window Keysight N9912-90001 User’s Guide...
Page 299: 20 Working With The Lithium-Ion Battery
Keysight Handheld Analyzers N9912A User’s Guide 20 Working with the Lithium-Ion Battery In this Chapter “Viewing the Battery Charge Status” on page 20-1 “Charging the Battery” on page 20-3 “Reconditioning Battery” on page 20-6 “Battery Care” on page 20-6 “Maximizing Battery Life” on page 20-6 “Lithium-Ion Battery Disposal”...
Page 300: Service Diagnostics-Battery Screen
Working with the Lithium-Ion Battery Viewing the Battery Charge Status Table 20-1 Front Panel Icons Icon Status Battery not charging with 84% battery life remaining. Battery fully charged. A fully charged battery MAY NOT read 100%. Service Diagnostics—Battery Screen The Battery screen displays the following information. To access the screen, select System then Service Diagnostics then Battery.
Page 301: Charging The Battery
Working with the Lithium-Ion Battery Charging the Battery The battery in your FieldFox will have either 4 or 5 LED segments. 5-segment Charge 4-segment Gauge Charge Remaining Gauge Remaining 5 segments ≥80% 4 segments ≥75% 4 segments 60% to 79% 3 segments 50%,to 74% 3 segments...
Page 302 Working with the Lithium-Ion Battery Charging the Battery Figure 20-1 AC/DC Adapter To charge a battery inside the FieldFox, insert the AC/DC adapter plug into the Power connector on the FieldFox side panel, then plug the adapter into an AC outlet.
Page 303: Using The External Battery Charger (N9910X-872)
Working with the Lithium-Ion Battery Charging the Battery Using the External Battery Charger (N9910X–872) Read the safety information in “For the External Battery Charger (N9910X-872)” on page 21-6 Figure 20-2 External Battery Charger (N9910X-872) The external battery charger (N9910X–872), lets you charge a fully depleted battery in approximately three hours.
Page 304: Reconditioning Battery
Working with the Lithium-Ion Battery Reconditioning Battery Reconditioning Battery Reconditioning a battery can be performed ONLY with the External Battery Charger (N9910X–872). 1. Insert a battery into the left bay of the external charger. 2. Press the button labeled Push to Recalibrate Left Battery Bay 3.
Page 305: Lithium-Ion Battery Disposal
Regulations vary for different countries. Dispose of the battery in accordance with local regulations. Keysight Technologies, through Rechargeable Battery Recycling Corporation (RBRC), offers free and convenient battery recycling options in the U.S. and Canada.
Page 306 Working with the Lithium-Ion Battery Lithium-Ion Battery Disposal 20- 8 Keysight N9912-90001 User’s Guide...
Page 307: 21 Safety Considerations
Keysight Handheld Analyzers N9912A User’s Guide 21 Safety Considerations Keysight has designed and tested the FieldFox in accordance with IEC Publication 61010-1Safety Requirements for Electrical Equipment for Measurement, Control and Laboratory Use, and the FieldFox is supplied in a safe condition. The FieldFox is also designed for use in Installation Category II and pollution Degree 2 per IEC 61010-1.
Page 308: For The Fieldfox
Safety Considerations For the FieldFox For the FieldFox No operator serviceable parts inside except for the lithium-ion battery. Refer servicing to qualified personnel. To prevent electrical shock do not remove covers. If this product is not used as specified, the protection provided by the equipment could be impaired.
Page 309 Safety Considerations For the FieldFox The measuring terminals on this instrument are designed to be used with external signals described in Measurement Category I, but NOT with external signals described in Categories. Keysight N9912-90001 User’s Guide 21- 3...
Page 310: For The Ac/Dc Adapter
No operator serviceable parts inside this product. Do not perform any unauthorized modification to the product. Return the product to Keysight Technologies or a designated repair center for service to ensure that safety features are maintained. Operated at an ambient temperature: 0 to 40°C; full power rating;...
Page 311 Safety Considerations For the AC/DC Adapter When the FieldFox is connected to the AC/DC adapter, position the adapter so the power cord is readily accessible. The power cord is the disconnecting device. It removes main power to the AC/DC adapter. The FieldFox front panel switch is only for the DC power within the instrument, and not for the AC/DC adapter.
Page 312: For The External Battery Charger (N9910X-872)
Safety Considerations For the External Battery Charger (N9910X-872) For the External Battery Charger (N9910X-872) If charging batteries externally, use the optional external charger available from Keysight, or another SMBus charger of level II or higher. Never use a non–SMBus charger because the battery issues commands over the SMBus to the charger to control the charge rate and voltage.
Page 313: Battery Protective Functions
Safety Considerations Battery Protective Functions Do not disassemble or modify the battery. The battery contains safety and protection devices, which if damaged, may cause the battery to generate heat, explode, or ignite. Do not place the battery in direct sunlight, or use or store the battery inside cars in hot weather.
Page 314: Passive Protection
Safety Considerations Battery Protective Functions Secondary Overcharge Voltage: This is a one-time, permanent protection that is triggered when the voltage across any cell exceeds approximately 4.45 V. Once this protection is tripped, the battery can no longer be used and must be replaced.
Page 315: Batteries: Safe Handling And Disposal
Safety Considerations Batteries: Safe Handling and Disposal Primary Overtemperature: A PTC (positive temperature coefficient) polyfuse in series between the Li-ion cells and the charging and discharging transistors will open up and limit current flow to the battery terminals as a function of very high temperatures.
Page 316 Safety Considerations Electrostatic Discharge (ESD) Precautions Static charges are generated in numerous ways, such as simple contact, separation of materials, and normal motions of persons working with the FieldFox. To prevent instrument damage, practice industry accepted techniques for handling static sensitive devices when using the FieldFox. Very often, coaxial cables and antennas also build up a static charge, which, if allowed to discharge by connecting to the FieldFox, may damage the instrument input circuitry.
Page 317: Fieldfox Markings
Safety Considerations FieldFox Markings FieldFox Markings The CSA mark is a registered trademark of CSA International. The RCM Mark is a registered trademark of the Australian Communications and Media Authority. This symbol combines the following three markings: CE indicates product compliance with all relevant European legal Directives (if accompanied by a year, it signifies when the design was proven).
Page 318: Battery Markings
Safety Considerations Battery Markings Battery Markings The CE mark shows that the product complies with all relevant European legal Directives (if accompanied by a year, it signifies when the design was proven). The battery parts can be recycled. Consult local or country regulations. Dispose of properly.
Page 319: Packaging Markings
Safety Considerations Packaging Markings Packaging Markings This symbol on all primary and secondary packaging indicates compliance to China standard GB 18455–2001. AC/DC Adapter Markings The UL Marks are registered certification marks of Underwriters Laboratories Inc. (UL). It means that UL has tested and evaluated representative samples of that product and determined that it meets UL's safety requirements.
Page 320: Certification And Compliance Statements
Certification Keysight Technologies, Inc. certifies that this product met its published specifications at the time of shipment from the factory. Keysight Technologies, Inc. further certifies that its calibration measurements are traceable to the United States National Institute of Standards and Technology, to the extent allowed by the Institute's calibration facility, and to the calibration facilities of other International Standards Organization members.
Page 321: Emc
Safety Considerations Certification and Compliance Statements Complies with the essential requirements of the European EMC Directive as well as current editions of the following standards (dates and editions are cited in the Declaration of Conformity): — IEC/EN 61326-1 — CISPR Pub 11 Group 1, class A —...
Page 322 Safety Considerations Certification and Compliance Statements 21- 16 Keysight N9912-90001 User’s Guide...
Page 323: A:.connector Care Review
The following table contains for tips on connector care. Prior to making connections to your analyzer, carefully review the information about inspecting, cleaning, and gauging connectors. For course numbers about additional connector care instruction, contact Keysight Technologies. A- 1...
Page 324 Connector Care Review Handling and Storage Do Not — Keep connections clean — Touch mating-plane surfaces — Extend sleeve or connector nut — Set connectors contact-end down — Use plastic end-caps during storage — Store connectors or adapters loose Visual Inspection Do Not —...
Page 325: B:.specifications/Data Sheet
Keysight Handheld Analyzers N9912A User’s Guide Specifications/Data Sheet To ensure the highest accuracy and consistency, the FieldFox Specifications are now stored ONLY at: http://literature.cdn.keysight.com/litweb/pdf/N9912-90006.pdf B- 3...
Page 326 Specifications/Data Sheet Keysight N9912-90001 User’s Guide...
Page 327: C:.instrument Calibration
Keysight Handheld Analyzers N9912A User’s Guide Instrument Calibration Over time, the active components in the FieldFox age and the performance may degrade or drift. To ensure that the FieldFox is performing to the published specifications, you should have an instrument calibration performed periodically.
Page 328: What Are My Choices Of Instrument Calibration
Instrument Calibration What Are My Choices of Instrument Calibration? What Are My Choices of Instrument Calibration? The following types of instrument calibration are available from Keysight Technologies service center: Includes the test data from the calibration and the Keysight Calibration certificate of calibration, stating the instrument has been calibrated and is operating within the published specifications.
Page 329: D:.korean Battery Safety Translation
Keysight Handheld Analyzers N9912A User’s Guide Korean Battery Safety Translation D- 1...
Page 330 Korean Battery Safety Translation D- 2 Keysight N9912-90001 User’s Guide...
Page 331 Korean Battery Safety Translation Keysight N9912-90001 User’s Guide D- 3...
Page 332 Korean Battery Safety Translation D- 4 Keysight N9912-90001 User’s Guide...
Page 333 Keysight Handheld Analyzers N99xxA User’s Guide Keysight Software End-User Licensing Agreement (EULA)
Page 334 Keysight Software End-User Licensing Agreement (EULA) Keysight N9912-90001 User’s Guide...
Page 335 Keysight Software End-User Licensing Agreement (EULA) Keysight N9912-90001 User’s Guide...
Page 336 Keysight Software End-User Licensing Agreement (EULA) Keysight N9912-90001 User’s Guide...
Page 337 Index Symbols cable loss measurements 14-7 , 3-12, averaging , 3-6, 5-11 3-13 21-13 cable specifications, DTF 14-7 4-23 avoid overpowering Cal On ? , 7-6, Numerics Calculated DTF values 4-26 calibration 1-port cable loss Cal On ? , 7-6, measurements Band Power Marker SA CAT and NA modes...
Page 338 Index Coupled Frequency Erase User Data , 3-11, 4-21, 18-23 error Gating 6-10 Coupled Markers meas UNCAL 16-5 , 8-21, 8-35 gating 6-10 red flashing LED, external 10-1 gauge, battery 20-2 cursor moving battery charger 17-9 20-5 getting started information cursor, moving red red flashing LED, external , 17-4, 17-9,...
Page 339 Index O,S, L cal NA Mode search function , 16-6, 5-12 16-7 indicator (*), old data table single sweep while in 8-35 16-4 initial use, preparing for trace Hold 16-6 18-2 input voltages and power, trace (CAT & NA Mode) 16-6 preset 18-3...
Page 340 Index power requirements power requirements for the NA Factory Cal S11 measurements, NA 18-22 AC/DC adapter NA mode mode power sensor input , 2-5, 2-11 calibration SA mode Power Spectral Density 8-39 settings settings , 5-3, , 8-4, power, maximum name files units 17-3...
Page 341 Index suffixes for file names multipliers 17-10 2-14 sweep numeric 2-14 acquisition parameter values, multipliers , 8-21, 2-14 8-23 8-21 time vector voltmeter 14-1 time, NA mode vector voltmeterSeeVVM 5-14 14-1 type Velocity Factor , 3-7, 5-13 , 4-22, 5-17 type, SA mode verifying integrity of 8-21...
Page 342 Index Keysight N9912-90001 User’s Guide...
Page 343 Installation Note Xxxxx-xxxxx...
Page 344 This information is subject to change without notice. © Keysight Technologies 2015, 2017 Edition 2, March 2017...

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