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
28
Drop-Down Menu Controls
The WiNRADiO Excelsior receiver employs an innovative type of drop-down
menu controls that work slightly differently from standard Windows controls.
To illustrate this, let’s try, for example, the DEM BW (demodulator filter
bandwidth) control located just above the DDC2 spectrum:
Clicking on the arrow button opens a drop-down menu showing a list of values
to select from, as you would expect. Spinning the mouse wheel will move the
list up and down with a little bit of inertia; the faster you spin, the faster the
imaginary “wheel” will turn. Clicking on an item will select it; double-clicking will
select it and also close the list.
If you don’t have a mouse wheel (for example using a laptop with a touch
pad instead of a mouse), you can also use the keyboard up/down cursor
keys to navigate inside the list.
There is also another difference with this control: On a long list, you can “click
and drag” the list, and the mouse cursor wraps from the top to the bottom of
the screen and vice versa. This does not select the item you clicked on, but
moves the whole list up and down underneath the selection. This works
particularly well with a trackpad on a notebook.