RF Explorer Pro User Manual
Updated firmware version 1.6

RF Explorer Pro is an advanced, 3rd generation, high-performance multi-purpose instrument. With its integrated Spectrum Analyzer, Signal Tracking Generator, and Power Meter, this device offers advanced functionality in a user-friendly high-resolution touch screen interface.
The internal GPS ensures accurate RF heatmap tracking, while the high-performance CPU enables fast frequency coordination calculations, real-time interference checking, and intermodulation analysis.
Experience the convenience and power of the RF Explorer Pro for precise RF analysis and optimization.
Operational Modes
Use this menu option to choose between different operational modes.
Standard configuration to display sweep data Spectrum Analyzer graph.
For more details see:
Note
Spectrum Analyzer mode is the enabled by default upon application start
Notice
Frequency Coordination mode must be enabled by license activation
Spectrum Analyzer mode
The main screen includes standard spectrum analyzer graph with captured data from RF Explorer device and the right-side menu with all options to use the application easily.
The data screen is a high speed data representation of Spectrum Analyzer Frequency vs Amplitude.
The X axis represents frequency in MHZ and Y axis display actual received power in dBm, dBuV or Watt (selectable).
Touch Gestures
You can use two finger gestures to zoom and pan frequency or amplitude.
- Zoom in/out - change Frequency Span: Apply two finger gesture towards the horizontal axis to increase or decrease span.
- Amplitude pan: Move two fingers up or down to pan amplitude
- Frequency pan: Move two fingers left or right to pan frequency
Navigation and replay sweep control
The navigation bar provides full control to review any past sweep event and also replay sweeps at original captured speed.
This can be used with recently captured data or stored data files.
- [<<]: Go back multiple sweeps (about 10%)
- [ < ]: Go back to previous sweep
- Navigation bar: Point and move to desired sweep. While the scrollbar actuator is being moved, sweep captured date will be updated in real time but spectrum analyzer screen will be updated after releasing the bar.
- [ > ]: Go forward one sweep
- [>>]: Go forward multiple sweeps (about 10%)
- [Play]: Replay captured activity using original captured speed
- [ || ]: Pause spectrum analyzer activity on screen, but the RF Explorer device continues capturing and storing data
- [ Hold ]: Fully stop spectrum analyzer activity and data capture. This is the only valid state when using data from file
- [ Live ]: Restore spectrum analyzer activity and data capture
Hold status

Live status

Touch Labels
Some parameters can be easily configured by screen touch with yellow areas in depicted graph.
Press each of these regions to change:
- Amplitude Top/Bottom - Change with numeric dialog
- Start/Center/Stop frequency - Change with numeric dialog
- Preset name - Set current preset. Note this is not available for Full Screen mode
- Amplitude Units - Menu Config -> Display
- Input Stage - Menu Config -> Device
- Frequency Offset - Change with numeric dialog
- Span Frequency - Change with numeric dialog
- Sweep Resolution - Menu Config -> Device
- RBW - Menu Config -> Device
Note
The battery level indicator and GPS signal strength are also represented on the right-hand side of the graph, but this icons do not have any touch action when pressed.
GPS icon is only available for Spectrum Analyzer mode
Power Channel mode
Show power measured within channel defined by start/stop frequency.
Power Data Mode
Trace from which measurements are performed.
Channel Power
Power received in the frequency band represented in dBm and Watt units.
Channel Power Density
Represents how the signal power is distributed in dBm/Hz unit.
Channel Center
Center frequency of the channel in MHz unit.
Channel Bandwidth
Bandwidth of the channel in MHz unit.
Captured
Date and time when sweep was captured.
Waterfall mode
OpenGL 3D graphics supported
This is a powerful, high performance 2D/3D visualization of historical sweeps, displaying the most recent captured sweep in front, with older sweeps in the background.
It is a very efficient and practical way to display intermittent or time-changing signals that may not be easy to detect any other way.

The color map used by the Waterfall screen is defined by the Top and Bottom amplitude signals configured on the spectrum analyzer.
Signal peaks that are close to the top will show red region whereas signals close to the bottom will display blue, with a color gradient in between.
The "heat" of the display color code can be dynamically adjusted by changing the Top and Bottom amplitude settings anytime.
Settings
Right click on the waterfall screen anytime to enable a context sensitive menu.
Signal Type
- Real Time: Show real time captured activity.
- Max Hold: Show maximum value of all captured samples.
Perspective
You can choose between 4 different perspectives, including a 2D view that is best suited for accurate signal research.
History Sweeps Time
Determine historical time to be displayed as last 30, 60 or 120 seconds.
Transparent
Define 3D graphics as transparent when selected, or opaque when unselected.
Visible Floor
Display a gray, opaque grid floor when selected.
Visible Draw Time
Sometimes useful to know the performance of the graphics card representing frames per second (FPS) of the waterfall display.
Save Waterfall Screenshot
Store Waterfall screen to an PNG image file.

Waterfall perspective 2D
Tracking SNA mode
This feature allows for rapid diagnostics and characterization of cables, filters, and amplifiers. When combined with a directional coupler, it can measure impedance and characterize antenna VSWR.
Notes
Sweep navigation control is not available for replaying sweeps
RealTime and Average are the only available traces
Touch Labels
Some parameters can be easily configured by screen touch with yellow areas in picture above.
Press each of these regions to change:
- Measure Data - Change with selection dialog
- Generator Power - Change with dialog
- Sweep Average - Change with numeric dialog
- Sweep Speed and Points - Change tracking sweep steps with numeric dialog
Amplitude Menu
Power
Select Signal Generator power for tracking SNA
Measure
Select display option to correctly interpret tracking sweep data
Average
Total number of sweeps to average samples, larger numbers improve noise rejection
Frequency Menu
Start
Start frequency sweep
Stop
Stop frequency sweep
Steps
Tracking SNA steps. The more steps you use, the longer the sweep will take. Recommended values are from 50 to 200 steps for a good compromise of speed and resolution.
Normalize
Standard SNA requirement to rule out any cable, connector or environmental imperfection. The application will properly measure the response of your setup and will consider that 0dB response in order to refer any measurement to it.
Start/Stop
Perform/Finalize SNA for continuous tracking sweep. Screen will be updated with SNA results every few seconds.
The Start button is available when normalization process done successfully
The Stop button is available while performing tracking process
For more details about performing tracking SNA visit:
Power Meter mode
This specific operating mode allows the measurement of power across a wide frequency range. In this mode, the power meter is designed to accurately measure the total power of signals that span a broad bandwidth, rather than focusing on specific frequencies or narrowband signals.
Wideband power meters are commonly used in applications where the frequency content of the signals being measured varies over a wide range. They are ideal for measuring the total power of wideband signals, such as broadband communication systems, wideband radar signals, and signals with frequency-hopping modulation schemes.
The wideband power meter mode typically provides a higher measurement speed and efficiency compared to narrowband power measurement modes, as it captures the total power across a wide frequency range in a single measurement.
Wideband Power Meter supports following modes:
Continuous data capture for specific reference frequency
In this mode, the system enables continuous data capture for a specific reference frequency. The continuous data capture functionality allows for real-time and uninterrupted measurement of the chosen reference frequency. This feature is particularly valuable for detailed analysis and monitoring of signals at the specified frequency, providing valuable insights into its behavior over time.
Frequency Menu
Reference
Refers to the specific frequency chosen as the reference point for power measurements while capturing activity data
Zero Span mode
This specific operating mode allows the user to focus on a narrow frequency range, effectively setting the span to zero. This mode is particularly useful for analyzing and measuring signals with high frequency resolution within a limited frequency bandwidth, also it allows to examine the signal characteristics with high precision.
Zero Span mode is commonly used for tasks like measuring the power, frequency, and modulation characteristics of a specific signal or analyzing the spectral content of a single carrier signal without seeing the surrounding frequency spectrum.
Applications of Zero Span mode include measuring the frequency deviation of a modulated signal, characterizing frequency shifts or drifts, and examining the modulation quality of signals.
Zero Span supports following modes:
Continuous data capture for specific reference frequency
In this mode, the system enables continuous data capture for a specific reference frequency. The continuous data capture functionality allows for real-time and uninterrupted measurement of the chosen reference frequency. This feature is particularly valuable for detailed analysis and monitoring of signals at the specified frequency, providing valuable insights into its behavior over time.
Frequency Menu
Reference
Refers to the specific frequency chosen as the reference point for power measurements while capturing activity data
Configuration Options
Application Display
Alphanumeric Keypad
Define preference to use a virtual alphanumeric keyboard.
Note if disabled user must display system keypad manually every time to type text.
Numeric Keypad
Define preference to use a virtual numeric keyboard, useful in touch capable tablets and laptops. Note Frequency and Amplitude numeric dialogs are always active.
Dark Mode
Set a black background skin, closer to desktop instruments and easier to read in certain environments.
Iterations
The number of sweep data iterations to perform calculations on including Average and MaxPeak (not available for Tracking SNA mode).
Device Display
Fill Trace
Display a filled area in all signal shapes except Realtime signal.
Smooth
Use soft splines to join data sweep points in order to present a calculated soft curve
Thick Trace
Display trace with extra width
Show Grid
Show grid inside spectrum analyzer graph
Amplitude Units
Select amplitude units between dBm, dBµV or Watt to display data in analyzer graph.
Data traces
Realtime
Raw data as captured with no post-processing.
Average
Arithmetic media of all the last iterations sampled.
Max Peak
Maximum value of all the last iterations sampled.
Max Hold
Maximum value of all captured samples regardless Iterations value.
Minimum
Minimum value of all the last iterations sampled.
Note
For Power Meter and Zero Span modes the unique trace available is Real Time
Tracking Display
Stop Auto Average
Automatically stop SNA tracking after <Average> specified number of sweeps
Insertion Loss (dB)
Evaluate signal insertion loss in dB
Return Loss (dB)
Evaluate the ratio of the reflected power to the incident power in dB
Return loss (VSWR)
Evaluate the ratio of the maximum to minimum voltage on a loss-less transmission line
Device options
Input Stage
Select input stage to enable Direct, Attenuator or LNA.
Low loss signal path to standard sensitivity, use for linear measurements up to -25dBm.
RBW (KHz)
The RBW references the internal filter used to discriminate the bandwidth of each sweep step, this is the frequency span of the final filter that is applied to the input signal
Supported values for Resolution Bandwidth in KHz:
- Auto: Best RBW definition is calculated over current frequency configuration to get faster sweep scans and is resolved by firmware, RBW manually adjust is not required every time frequency span is set
- 3, 5, 10, 30, 50, 100, 300, 500, 1000 and 2500
Resolution Bandwidth note
In addition to that, RBW has an important impact on the sensitivity of the Spectrum Analyzer.
The wider the filter bandwidth, the higher the spectral noise and therefore the lower the sensitivity.
This is visible by an increasing noise floor as the RBW is larger, and lower noise floor as the RBW is narrower. Based on this, the narrowest RBW would look like the better choice for all measurements but as you get a narrower RBW you also decrease the scan speed notably, due to the slower nature of narrow filter as well as the need to measure more sweep points to cover the full span.
Power Meter and Zero Span Trigger options
Threshold (dBm)
Refers to the minimum signal strength required to capture and display activity data.
Positive
It refers to the threshold, where, if it is positive, the captured signal must exceed the defined threshold to trigger the action. Otherwise, the signal should be lower.
Sample Time (us)
Refers to the time interval or duration between consecutive samples
Mode
- Once: The trigger action is launched once, and the device stops capturing data
- Continuous: The trigger is continuously evaluated, and if the threshold is reached, the data is captured and displayed on the graph


File
Save RFE Data File on Close
Save a RFE data file every time application is closed. If “Enable Continuous Log” option is enabled, this feature will be enabled automatically.
Enable
Enable continuous log to save RFE data or CSV files periodically in seconds as selected in “Auto Save Delay (s)” option. Also this option save a RFE data file in each configuration change in device and when application is closed.
Auto Save RFE Data
If “Enable” option checked, save a RFE data file every number of seconds selected in “Auto Save Delay (s)” option.
Auto Save CSV
If “Enable” option checked, save a CSV data file every number of seconds selected in “Auto Save Delay (s)” option.
Auto Save Delay (s)
Number of second for Auto-Save feature.
Auto Delete (Days)
Number of days for Auto-Delete old and unused files in user folder
Auto Save Folder Path
Directory where .RFE and CSV files will be stored if Auto Save feature is active
Note
Currently RF Explorer files can only saved into a removable disk
CSV File
Field Separator
Delimiter to use for CSV file generation.
Supported separators: Comma, Division, Semicolon, Space or Tabulator.
Decimal Separator
Delimiter to use as decimal separator.
Supported separators: Comma or Dot.
End of Line
End of line to use in for CSV file generation.
Supported end of lines: Line Feed (\n) or Carriage Return and Line Feed (\r\n).
WSM Sennheiser Compatible
When option is checked, CSV files generated can be imported directly in WSM Sennheiser software.
CSV Trace
Selected data trace used to generate the CSV file. There are multiple traces available (such as Real Time or Average) so it is important to select the right one for your needs.
CSV Header
Insert descriptive header inside generated CSV files.
Fields included are:
- Receiver
- Date/Time
- RFUnit
- Owner
- ScanCountry
- CRC
Important
The selected trace must be visible in the Spectrum Analyzer graph, if there are multiple visible the tool will select one by this priority order:
1. Average trace
2. Max Peak trace
3. Real Time trace
4. Max Hold trace
5. Minimum trace
Radio Standards
Feature custom definition of Radio Standard channels.
You can now import standards or define your own channels to be included in the Spectrum Analyzer graph.
Each channel in a Radio Standard will display:
Channel name
Visual shape of the actual bandwidth and channel position
Computed individual power channel
All parameters of a Radio Standard can be configured in the menu option Config -> Radio Standards -> [Configure...]
This will open a configuration dialog to setup parameters, select which Radio Standards are visible (up to 10 at any given time), import new Radio Standard definitions, etc.
- Go to “Config” menu.
- Select “Radio Standard” option.
- Click on [Configure…] button.
- Check intended Radio Standard on the list.
- You can include a suitable description, change color and channel shape, rename it, etc.
Note
A maximum of 10 Radio Standards can be selected as visible at any given time.
Display Options
To configure Radio Standard display options go to Config -> Radio Standard and click on [Display Options…] button.
Appearance
“Show Channel Shape” option: Enable/Disable Radio Standard channel shape display.
“Show Background” option: Enable/Disable shadow among channel bandwidth display.
“Line Style” option: Define how channels will be drawn. Values:
- Solid Line
- Dashes Line
- Dotted Line
- Dash and Dot line
Text Settings
“Text Name Channels” option: Enable/Disable channel name display.
“Text Amplitude Values” option: Enable/Disable channel power values display.
“Size” option: Select channel text font size
Limit Lines
An advanced and powerful tool in the spectrum analyzer mode is the ability to work with Minimum and Maximum Limit Lines.
These are fully configurable, visual and optionally audible alarm feature with multi-data point lines to determine power limits.
Operative Limit Line
Limit Lines are fixed thresholds, and only one pair of Max / Min limit lines can be specified at any given time.
These settings apply to one limit line type at a time: maximum or minimum. Use to define or change parameters of each limit line as required.
Different limit lines can be loaded from file or generated from a signal trace anytime.
Limit line type
- Max: select to apply changes to maximum limit line.
- Min: select to apply changes to minimum limit line.
Build from signal
Generate maximum or minimum limit line from a currently selected signal trace specifying a positive offset in dB. This offset will be added or subtracted depending on limit line type selected
Save to file
Save maximum or minimum limit line to a limit line file (.rfl).
Read from file
Load maximum or minimum limit line from a limit line file (.rfl).
Remove
Remove maximum or minimum limit line from spectrum analyzer screen.
Common
These settings apply in common to both maximum and minimum limit line
Sound alarm
To enable or disable an audio alarm for as long as the condition is not met
Grips
To enable or disable circle gripped in limit line traces. For high resolution mode, circles might make it hard to see how close limit line trace from signal trace is.
Technical Support
Create a compressed ZIP file with activity logs, configuration files and report files in order to diagnose application issues. Only required if requested by RF Explorer Tech Support.
About
Show application, Operating System and device details
Also GPS data and status if available.
GPS Status




How to change application appearance




Frequency and Amplitude configuration
Set frequency and amplitude values for device
Spectrum Analyzer
Change Frequency
Click on [Frequency] and click on desired parameter to set in device.
For more details see:
Change Amplitude
Click on [Amplitude] and click on desired parameter to set graphic top and bottom limits displayed
For more details see:
Tracking SNA
Change Frequency
Click on [Frequency] and click on desired parameter to set in device.
For more details see:
Change Amplitude
Click on [Amplitude] and click on desired parameter to set in device.
For more details see:
Markers
Configuration parameters that control the display of markers in different operating modes including Spectrum Analyzer, Zero Span Trigger, Power Meter Trigger and Tracking SNA.
These settings allow to customize how markers are shown on the graphs and markers panel, providing valuable insights and enhancing your analysis capabilities.
Note
Spectrum Analyzer and Tracking SNA markers are referenced to frequency, whereas Zero Span Trigger and Power Meter Trigger modes are based on a time reference.
In other words, Spectrum Analyzer and Tracking SNA modes use markers to identify specific frequencies, allowing you to measure and analyze signals at different points in the frequency spectrum. On the other hand, Zero Span Trigger and Power Meter Trigger modes utilize markers in a time-based manner, enabling precise measurements and triggering events at specific time intervals.
Main Marker ID
Marker Identification number. Check “Enable Marker” option to set a marker.
Frequency (MHz) / Time (us)
Marker frequency/time (Only allowed for markers 2 to 10).
Delta Marker ID
Delta Marker Identification number. Check “Enable Marker” option to set a delta marker.
Offset (MHz) / Offset (us)
Frequency/time difference in MHz/us between delta marker and its reference marker.
Offset Locked
Enable a dynamic follow-up of the Delta ID to the Marker ID selected. It will follow the reference Marker if it changes position.
Track Marker 1
Define trace that marker 1 follow in visual representation
Marker 1 Peak Text
Show peak frequency/time and amplitude values for marker 1
Marker Panel
Show or hide markers panel to display visible markers table.
Overwiew
- Marker 1: It is special marker. It will search for peak trace point on screen and will track automatically. Therefore, frequency/time point for Marker 1 cannot be defined, will be dynamically updated by the application every sweep.
- Markers 2 to 10: These markers are defined for a specific frequency/time point, and will show amplitude values for all enabled traces on that frequency.
- Delta markers: This markers will be a reference of other marker, that is, it will be linked with a particular marker.
How to set up a peak marker
How to set up a manual marker
How to set up a Delta marker
Notes
- Special Marker 1 can be Delta Marker of any other, but it cannot have associated any Delta Marker by Offset. The reason for this is Marker 1 works as auto-peak therefore cannot be defined as reference of any other.
- Markers defined by Offset use the value at the time of Marker definition, but does not update or keep that offset fixed if the Delta Marker changes frequency. For instance if you define Marker 5 at an offset of 5MHz of Marker 1, and marker 1 is currently at 100MHz, then Marker 5 will be located at 105MHz. If Marker 1 moves to a different frequency later, Marker 5 will remain at 105MHz, you can see the current frequency offset any time in the marker display panel.
- Future upgrades will allow for optional dynamic markers where offset will be locked so Main Marker absolute frequency value can change accordingly to the Delta Marker.
Presets
Presets are predefined configuration stored by name in the application to easily recall commonly used setups.
Parameters persisted are frequency, amplitude, enabled traces and markers.
Load
Action option to load stored preset values into current configuration.
Save
Action option to save current configuration into the selected preset. This option cannot be undone, care should be taken to not overwrite another valid preset.
Delete
Remove selected preset configuration. “Default” preset cannot be deleted.
Back
Return to main menu and current visual mode (such as Spectrum Analyzer).
How to create a new preset
Notes
- Load Presets only will be effective while device is capturing data, not when a file has been loaded.
Files
External USB removable device is required to load/save files
Note
A future firmware version will allow storing in internal SSD disk and easily copy to/from external USB drive.
Spectrum Analyzer mode
Contain different actions for files as Load, Save RFE data and Save CSV.
Overview
- RFE data files are binary, compact data files with multiple sweeps. These files are compatible with RF Explorer for Windows.
- CSV data files can capture a single trace and can be used to share data to external applications such as WWB, Excel, Matlab or IAS.
Load file
To load RFE file, go to File -> Load… and select desired file navigating through directories.
Click on [Load] button to finish action.
Save file
To save RFE file, go to File -> Save… and select desired directory to store file, typing a name for it.
Click on [Save] button to finish action.
This option is only available if data is actually received
Save CSV file
To save single CSV file, go to File -> Save CSV… and select desired directory to store file, typing a name for it. Click on [Save] button to finish action.
To change CSV file configuration parameters, such as field delimiter or end of line type, see:
Instructions to easily export CSV files to external applications
Go to Config -> CSV File and check “WSM Sennheiser Compatible” option
Tracking SNA mode
Contain different actions for files as Load Normalization, Save Normalization, Save 1SP data and Save CSV.
Load Normalization file
To load Normalization file, go to File -> Load Normalization as… and select desired file navigating through directories.
Click on [Load] button to finish action.
Save Normalization file
To save Normalization file, go to File -> Save Normalization as… and select desired directory to store file, typing a name for it.
Click on [Save] button to finish action.
This option is only available if tracking normalization data is actually received
Save S1P file
One port S-parameter data file.
To save tracking S1P file, go to File -> Save S1P as… and select desired directory to store file, typing a name for it.
Click on [Save] button to finish action.
Save CSV file
To save tracking SNA single CSV file, go to File -> Save CSV… and select desired directory to store file, typing a name for it. Click on [Save] button to finish action.
To change CSV file configuration parameters, such as field delimiter or end of line type, see:
Virtual Touch Keyboards
Context sensitive virtual touch keyboards are included in the RF Explorer Pro.
The Windows virtual keypad is disabled by default.
Notes
If virtual touch keyboards disabled by settings, the only way to type text into application is displaying manually the windows virtual keyboard.
Numeric Keyboard
This keyboard will appear when application require numeric data. When available, a physical keyboard can be used to edit numeric value as well.
This keyboard can be shown/hidden based on Config/Display setting, except Amplitude and Frequency which are always available.
- [X]: Close keyboard ignoring changes.
- [<DEL]: Delete a left digit from current cursor position.
- [CLEAR]: Remove all text in edit box.
- [dBm], [-dBm], [dBµV], [Watt], [µWatt], [pWatt]: Validate inserted data in the specific units. Other configurations may show GHz, MHz, KHz, etc.
- [W/dB]: Switch amplitude units between dB and Watts
- Range label: Show current magnitude type used to enter value. For amplitude it may show dBm,.
Note
Validation buttons will change depending on parameter to modify.


Alphanumeric Keyboard
This keyboard will appear when application require text information. When available, a physical keyboard can be used to edit alphanumeric value as well. This keyboard can be shown/hidden based on Config/Display setting.
- [CLEAR]: Remove all text in edit box.
- [ESC]: Close keyboard ignoring changes.
- [CAPS]: Type with capital letters.
- [<DEL]: Delete a left character from current cursor position.
- [DONE]: Close keyboard saving typed text.
- [<]: Move cursor to the left.
- [>]: Move cursor to the right.
How to Upgrade RF Explorer Pro
Required USB removable device
Steps for the update process
- Download the RF Explorer Pro installer externally such as a PC with internet conection available from the link provided below
- Save the installer file to a USB device
- Plug the USB device into your RF Explorer Pro system
- Navigate to the location where you saved the installer file
- Launch the "RFEPro_WinUpgrade.exe" file and follow the provided instructions.
- Wait for the system to complete the upgrade process
- The system will automatically reboot once the process is finished


