SDR-14 & SpectraVue
S o f
t w a r e
D e f i n e d
By:
Moe Wheatley, AE4JY and Pieter Ibelings, N4IP
R a d i o
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SDR-14 FFT Spectrum Analyzer Digital Receiver
Direct
Input Port
I
I
I
N
ADC
HF Input
Port
Q
Variable
Gain
Preamp
COS
30 MHz
Low Pass
Filter
Q
Q
CIC Filter
FIR Filter
Decimator
Complex
Data
-SIN
Real
Data
Switch
66.666 MHz
Oscillator
Complex
NCO
PIC
Processor
USB
Interface
8
32 to 8 Bit
MUX
CPLD
32
512K x 32
Memory
16 Bit IQ
or Real
Data
2
AD6620 DIGITAL DOWNCONVERTER
3
FTDI FT245 USB Interface Block Diagram
4
SpectraVue Block Diagram
Input
Sources
IQ
Display
SDR-14
FFT
Parameters
2D FFT
Display
FFT
Functions
Sound card
3D FFT
Display
Waterfall
Displays
RIFF
Wave File
Demod
Parameters
Continuum
Display
Internal
Generator
Demodulation
Functions
Sound card
RIFF
Wave File
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SpectraVue Capabilities
• FFT analysis using 2048 to 262144 point FFT's (real or complex).
• FFT amplitude resolutions from 10dB to .2dB per division.
• FFT amplitude power is in dB referenced to full scale (a single sine
wave with amplitude of +/-32767 or 16 bits).
• Various FFT data view modes including waterfalls and 2D and 3D
plots.
• Display markers for accurate amplitude/frequency measurement.
• A continuum display for measuring spectral power over the entire
span and/or the peak power within the span.
• Frequency Spans from 5KHz to 30MHz in various step sizes.(using
SDR-14 unit)
• Signal demodulation of AM, NBFM, USB, LSB, narrow CW modes
when using the 100 KHz Frequency Span and SDR-14 unit.
• Saving and playback of captured spectrum using RIFF .wav files.
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The AD6620 Setup Menu
7
The Wave File Input Menu
8
The Data Output Menu
9
The Data Output Menu
10
RAW DISPLAY
Shows in-phase and quadrature waveforms over time.
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2D FFT DISPLAY
Shows amplitude vs. frequency.
12
3D FFT DISPLAY
Shows amplitude vs. frequency vs. time.
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V WATERFALL DISPLAY
Shows amplitude vs. frequency vs. time
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H WATERFALL DISPLAY
Shows amplitude vs. frequency vs. time
15
CONTINUUM DISPLAY
Shows channel power vs. time.
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Military Satellite Transponder
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Decoding AO-40 using AO40RCV and SpectraVue
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The whole 20 meter band in one snapshot.
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Additional Info.
Visit http://www.rfspace.com for more
information regarding the SDR-14.
Additional information on SpectraVue can be
found at http://www.moetronix.com
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