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
117
Appendix C – USB Interface Diagnostics
The flashing pattern of the blue LED on the WR-G39DDCe receiver’s front
panel has a diagnostics meaning. Normally, when the receiver is powered up
and the application running, the blue LED should flash in a dih-dah pattern (i.e.
a short flash followed by a long one).
A complete list of the flashing patterns and their meaning is as follows:
No.
Pattern
Description
Mode
1
Off
No power
2
Long flash,
equal gap
No connection to computer
3
Two short
flashes
USB connected, radio off
4
One short
flash
followed by
a long one
USB connected, radio on, ready
5
Two short
flashes
followed by
a long one
USB connected, driver not
installed
6
Three short
flashes
USB connected, driver installed,
application not running
For the normal Ready state as indicated by pattern 4 (one short flash followed
by a long one), the front panel LED can be controlled by the user, under the
Options | Front panel LED top bar menu. Depending on these settings, the
LED can be made to either indicate the diagnostic patterns, or be continuously
on or off (while the application is running).
This is useful in situations when a flashing LED might appear disturbing and a
steady state is preferable.