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
41
ISB and DSB Modes
ISB (independent sideband) is quite similar to the AMS mode and makes it
possible to receive independent information in the two sidebands of an AM-
modulated signal with suppressed, or partially suppressed, carrier.
The desired audio output can be selected between the lower and upper side
bands using two selector USB and LSB buttons accessible under the Tuning
tab:
Note: Both channels of an ISB transmission can be recorded
simultaneously using the recording facility of the G39DDC receiver. For
this purpose, allocate the two receivers to the same signal, select LSB
on one and USB on the other, and record the signals separately.
In the DSB (dual sideband) mode, both side-bands carry the same information,
but the carrier is either entirely or partially suppressed. The controls and
operation are similar to the AMS mode.
DRM Mode
The DRM mode is a new broadcasting system designed to introduce digital
broadcasting to medium and short waves. This is achieved by introducing
sophisticated state-of-the-art digital signal coding and compression, together
with extending channel bandwidth. This results in a dramatic improvement in
broadcast quality. For more information about this mode, refer to
www.winradio.com/drm.
Activating this mode requires purchasing a license from the DRM consortium.
Selecting the DRM mode will provide details how to acquire the license.