Atec Acterna-MS1000-1200-1300D-1400 - Manual (Page 5)

digiCheck™ digital signal
measurement
Making accurate digital average power
and performance measurements can
be addressed with the digiCheck™
measurement function (MS-1200D,
MS-1300D and MS-1400).
The
digiCheck™ takes small slices of the
integrated RF-energy, summing them
together to provide one total power
reading. It takes into account the
channel flatness of the digital carrier
itself.
Small-band digital carriers, like cable
telephony,
require a different
measurement technique. For that
purpose, the digiCheck™ feature offers
a time average as well. Even in this
case, all level readings are fully
compensated for by the correct
occupied bandwidth.
Ingress scan
The innovative Ingress Scan mode
finds forward (MS-1400) and reverse
ingress (MS-1400 and MS-1300D)
problems from the tap to the drop.
Start/stop frequencies, resolution,
and dwell-time are programmable in
the setup menu. The operator can also
set a limit threshold for simple identi-
fication of problem drops. To check
for intermittent ingress, the meter can
be adjusted to the Peak Hold mode to
capture transient signals. Ingress scan
displays can be saved for printing later
or for uploading to StealthWare™
software (MS-1300D and MS-1400).
Testing the reverse path spectrum for
sub-band signals being generated in
the drop system improves the
effectiveness of finding ingress sources
and common path distortions.
5
SIGNAL LEVEL METERS
A display of the spectrum with clear preset limits
allows the installer to easily identify ingress.
Intermitent ingress is detected through flexible
dwell-time setup (MS-1300D, MS-1400) The digiCheck ™ method of measuring the
total integrated RF-power under the haystack
is very reliable and accurate. All level readings
are fully compensated for by the correct
occupied bandwidth
Digital TV and forward cable modem signal
Small-band digital signals are like cable
telephone carriers