User's Manual
Table Of Contents
- Table of Contents
- Introduction
- The Hardware
- Installation
- Getting Started
- Inside the Excelsior
- Resizing the Application Window
- Drop-Down Menu Controls
- Tuning the Excelsior
- Receiver Selection
- Mode Selection
- Function Tabs
- Spectrum Scopes
- Recording Functions
- Attenuator
- Preamplifier
- S-meter
- Top Menu Bar
- File
- Options
- Auto-mute RX not in focus
- Enable second RX
- Filter Length
- Front Panel LED
- Display Offset
- Time
- Keyboard Shortcuts
- VSC Set-up
- Audio Buffering
- AMS Capture Range
- Audio Output
- Show Measurements
- Show Data Rates
- Of particular interest to many users will be the CPU load (excessive CPU load may cause sluggish behaviour or freezing of the computer), and Audio latency. Apart from DDC bandwidth, CPU load may be minimized by reducing the Demodulator filter length (...
- Note: When measuring sensitivity using SINAD, it is very important that the Audio Filter is enabled and the cut-off frequencies (and for FM measurements, also the de-emphasis) are set according to the specified test conditions. Proper audio filtering ...
- Show Waterfall Timestamps
- Calibration
- Hand-Off Receiver
- Color scheme
- Restore factory defaults
- Memory
- Scheduler
- Scanner
- Logger
- Plugins
- Power Switch
- Date and Time Display
- Appendix A – SDR and DDC Primer
- Appendix B – Troubleshooting
- Appendix C – USB Interface Diagnostics
- Appendix D – Dealing with Interference
- Appendix E – G39DDCi PCIe Card Connections
- Appendix F – Waterfall Spectrum Palettes
- Appendix G – Recording File Formats
- Appendix H – Compliance Declarations
- Appendix I – Safety Disposal
WiNRADiO G39DDC User’s Guide
79
The arrow button
starts the sweeping, the stop button stops is, the
pause
button pauses it, and the loop button selects between a single
shot and continuous sweeping.
At top-right, there are additional spectrum control buttons, similar to those of
the real-time spectrum scopes:
Three zoom function buttons
make it possible to zoom in and out, and
reset the zoom, the min and max buttons
revealing the minimum and
maximum values obtained since the start of the sweep, and the reset
button that clears these values for a fresh sweep.
The activity search results can be saved in a special proprietary format
(extension “.g39ddcswp”) and then loaded back to be viewed by the Excelsior
application. This is accomplished using the file Save and Load buttons,
respectively:
A row of special control buttons determines what is actually visible in the swept
spectrum:
The first two Max and Min buttons
are already familiar from the other
spectrum displays, and cause minimum and maximum values to be
remembered for the duration of the sweep and shown in the resulting
spectrum. These values can be reset using the Reset button
.
The Real-time button
disables and enables real-time display of the actual
swept spectrum (when disabled, it does not affect the display of the computed
minimum, maximum and average spectra).
The Average button
enables or disables the display of averaged spectrum
(averaged for the duration of the sweep).
The Follow button
is applicable only when the spectrum is zoomed in, and
causes the display to follow the current sweeping position. If disabled, the
display then remains stationary.