Examining radio signals is the original idea of Analyzer2000. Simply connect the AF-output of your receiver to the input of your soundcard and see, what you hear. Use SSB and you will have a feeling like using an expensive IF panorama adapter.
You can change a lot of parameters
to adapt Analyzer2000 to
your target signal.
Use a FFT size of 16384
and averaging to measure a signal with a frequency resolution of only 0.5
Hz even under very bad receiving conditions.
Thanks to the dynamic range of 160
dB and noise elimination tools (minhold,
average), spurs
as weak as 50 nV can be made visible.
All samples are taken in real-time
and are stored in a sample buffer. Due to this method, no samples are getting
lost even on slow machines. This sample buffer can be written to hard disk
using the snapshot
feature. Another way is logging all samples to file. In offline mode, the
signal can be analyzed down to single sample resolution (i.e.
25µs). Searching for interesting sections
in the file (or sample buffer) is supported by a VCR-like shuttle control. Beside analyzing radio signals,
Analyzer2000
does also support bidirectional modem communication.
General Measurements
In addition to radio signals, Analyzer2000
is perfectly equipped for general
measurements
Human Voice and Music
To analyze human voices, the sonagram
display can be used. By changing the dynamic range and selecting one out
of several coloring schemes, you can see the characteristics of the voice.
To compare two spoken words for instance, open two
windows, one for each audio source. You can
arrange these windows to see them side by side. To "fingerprint" a signal,
use pairs of frequency and time rulers with delta
function.
For tuning musical instruments,
Analyzer2000 is
equipped with a musical note display
with extra big digits :
In addition to these generic analyzing capabilities, Analyzer2000
has built-in a multi-channel CW decoder and a FSK/F7B
demodulator with baudrate estimation.
A hellschreiber display suppports in classifying all types of FM-based modes
like FSK, SSTV or Fax. Also PSK signals can be made visible giving information
about symbol rate or frame structures.
These signals can easily be classified by using the new PSK
demodulator and the realtime constellation display with phosphor
oscilloscope effect.
The first of these modem drivers
is now available : PSK31
, a new amateur radio teletype mode.
As teletype interface, a special
easy-to-use terminal program Terminal2000
has been developed.
Click here
for the special PSK31/Terminal2000 page
on components or other circuits. Level riding markers with peak finding and delta function make
it easy to determine interception point or harmonic distortion.
THD, SNR (SINAD) and VCO phase
noise (dBc/Hz) can be gathered by only one
mouse click :
But Analyzer2000
is not only a high-end spectrum analyzer
(with limited bandwidth of course), it also replaces a digital oscilloscope
with several measurement and display options.
