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TELE-audiovision International — The World‘s Leading Digital TV Industry Publication
— 03-04/2015
—
TELE-audiovision.comkilometres), the Spaun Spa-
ros 711 offers the follow-
ing innovative measurement
method: The main signal is
shown in the centre of the
diagram and all echoes are
given at the corresponding
distances from that central
signal. A marker identifies the
guard interval. This gives you
a streamlined overview of the
real-world signal environment
and Spaun has done an excel-
lent job integrating this fea-
ture, even adding additional
tools such as automatically
numbering all echoes and list-
ing them in a summary table.
If an echo is detected that
is outside the guard interval
limits, experienced techni-
cians should be able to com-
pensate such an echo by using
this meter and two antennas
and by cutting the cable lead-
ing to the second antenna at
a length that precisely offsets
the runtime delay of the in-
terfering transmitter. Doing
those tricks without a top-
notch meter borders on the
impossible, while the Spaun
Sparos 711 is an excellent aid
thanks to its fast and highly
accurate measurement re-
sult.
We were in for another sur-
prise when we discovered the
MER vs. carrier measurement
option of the Spaun Sparos
711. This is a measurement
type that has surfaced re-
cently and is currently only
offered by a small number of
professional meters. Basical-
ly, this measurement looks at
the modulation error rate of
To put the Spaun Sparos 711 to
the test, we used it to perfectly
align a prime focus antenna with
a diameter of 1.8 meters. The
meter’s tuner has a very low
threshold and the meter generally
reacts very swiftly to all signal
changes, turning an alignment job
like this into real joy.