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
103
The next items are Start time and Start date. This is when the task shall be
executed, for example a recording will commence.
After this, you will need to specify whether you wish for this task to run only
once (select Run once), or whether this is to be a repetitive task (select
Repeat). If this is to be a repetitive task, you can select the repeat period in
terms of days, hours and minutes, and the ending date (using the Until
control).
If the task is to be performed only on particular days of week, you can select
those days of week on which the task is to be performed. (By default, initially
all days are selected, so you will have to deselect the unwanted days.)
Then there are three choices for the type of action for the Scheduler to
perform: You can either run a special-purpose plug-in, an external application
program, or make a recording. The last option, Record, selected by default, is
the one that is most commonly used. The file name edit box allows to chose
the recorded file name and the actual recording file format (for more
information about recording formats, please refer to Appendix G).
If the recording action is selected, you can then select whether the recording
should be of the demodulated Audio or DDC. DDC recordings have the
advantage of containing much more information, making it possible to “re-
receive” many stations in the recorded spectrum that can be up to 4 MHz wide.
If Audio recording type is selected, you have also a choice of the demodulator
filter bandwidth (DEM BW) – an identical control to the one in the demodulator
window. For DDC recording type, this control can be used to select the DDC
recorded bandwidth.
For Audio recordings, the Mode, Squelch and Audio filter controls also
become enabled, making it possible to set these parameters, similarly as they
are set under their respective tabs during normal receiver operation. If squelch
is enabled, the recording will be paused while the signal is below the squelch
level.
Using the Stop recording controls, you can force a recording to stop if one (or
more) of three conditions apply: The recording time exceeds a certain length,
the recorded file exceeds a certain size, or the signal becomes squelched for a
longer than specified period.