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
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buffer instead of going through the usual demodulation process. In this state,
the Current delay display will show the increasing amount of saved signal in
terms of the time delay, while the Pause time display will show the time when
the pausing started. If the paused data length exceeds the Maximum buffer
time, then Pause time will show the oldest buffered data that remains
available for playback.
If there is some data in the pause buffer, the Resume button becomes
available. When activated, it will start playback of the saved signal stream,
while the incoming real-time signal will continue to be saved in the buffer.
The Orig. time display shows the time when the currently played signal was
originally received. Data that have been already played back are automatically
removed from the buffer to make room for the incoming signal, so that
simultaneous buffering and playback can run for unlimited time, effectively
making it possible to listen to the signal with an adjustable delay.
In pause mode, the Progress bar is greyed out and only shows the increasing
amount of data in the buffer. In resume mode, the Progress bar becomes
enabled, making it possible for the user to move its slider and so skip a portion
of the buffered data.
The Skip button discards the entire buffer contents and terminates the pause
mode. The Pause button then becomes enabled again, making it possible to
start another pause session.
During playback of the paused signal, the S-meter, the DDC2 spectrum and all
demodulator controls will relate to the currently played back (buffered) signal.
However, the wideband and DDC1 spectrum displays, and the main frequency
read-out, will all relate to the currently received signal.