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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On the right-hand side, there is also an indicator of progress of the DRM signal
capture (Sync detected will have to appear before Audio decoded and then
the Signal-to-Noise Ratio (SNR) indicator will appear to show the quality of
the received signal. For reliable audio output, the SNR needs to be above a
certain threshold, typically 15 dB. Until this threshold is reached, the audio is
entirely muted (no noise at all coming from the speaker), as the decoded
signal would not render any useable audio.
The Excelsior’s DRM decoder can also decode multimedia content, which is
audiovisual information that may be broadcast by some DRM stations. If such
multimedia content is detected in the incoming signal, a special browser
program is launched to display this information.
To receive a DRM station, simply tune to the frequency and select the DRM
mode. If the signal is of sufficient strength and quality, it will be decoded. A
DRM station is easily recognizable thanks to its characteristic flat spectrum:
DRM broadcaster schedule information is available at www.drm-dx.de and also at
www.drm.org/index.php?p=broadcast_schedule.
Did you know?
WiNRADiO became involved in DRM technology shortly after its inception. Our
laboratory in Melbourne, Australia, was used to conduct long-range reception tests and
our G3-series receivers were developed to ensure optimum DRM performance.