— 19 —
tings are specific to the station being monitored at the time,
it is important to factor-in the
Rotation Time (Sec):
figure
when setting alarm variables so that the SiteStreamer™ will
not sequence to the next station before an alarm is trig-
gered.
BandScanner™
The 638 SiteStreamer™ incorporates a useful utility that dis-
plays the RF spectrum of the FM broadcast band. An
example plot is shown here.
In this example,
Center Freq:
was set to 98.1MHz and the
scanning
Step Size:
to 100kHz. This gives a plot of the en-
tire FM band.
The BandScanner™ actually scans the band twice; once in
analog FM and once in HD Radio FM. Progress is indicated
during the scan, and once it has completed an image like
the one above will be displayed. Stations shown above in
blue (also marked by the arrows) are stations with HD Radio
programming.
— 20 —
Any individual carrier can be zoomed-in-on.
Center Freq:
can be entered directly or with the slider, and the
checkmark to the right of
Step Size:
opens a pull-down
menu to select measurement bandwidth.
In this example,
Step Size:
was set at
10kHz and the scan centered at 94.7MHz.
This station is transmitting HD Radio
programming, and the HD Radio carrier
pair can be seen 20dB below the FM car-
rier level, extending the occupied band-
width by about 100kHz on both sides of
the assigned frequency.
‘Hovering’ the screen cursor over any car-
rier will display the frequency and the
incoming signal level in an information
box.
A band scan necessarily interrupts program audio during
the process, but alarms are inhibited during the scan.
RDS Info
The SiteStreamer™ gives a complete accounting of all the
RDS data groups on this Web interface page.
The upper part of the
RDS Info
screen decodes and displays
RDS information.
Summary of Contents for INOmini 638 SiteStreamer
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