EN
23
5.9.2. Setup
Press
to change Constellation options.
-
Band
: Terr, Sat
- Powering:
Select the powering of the LNB if
needed.
- DiSEqC:
Select the SAT of the DiSEqC
command.
-
SCR (only satellite band)
: Selects the SCR
parameters (multiswitch, standard and slots)
When a slot is enabled (for example slot 3,
freq. 1210MHz), the meter will tune into the
slof frequency (1210MHz) and will set the slot
with the meter parameters: frequency, band
(powering), and DiSEqC. In addition, a SCR
icon will be shown in the bar at the top (SCR3)
to indicate thar the slot is enabled.
While the slot is enabled, all the setting
changes of the meter, will be applied to the
currently slot (SCR3).
-
Zoom
: OFF, 1
st
, 2
nd
, 3
rd
, 4
th
.
Select a quadrant of the constellation to be
represented for more detailed view. Select
Zoom OFF for the full constellation.
-
Tuning
: Channel, Frequency
-
Save datalog
: Saves the current scan
measurements. You can see the datalogs
using the remote control application.
5.9. Constellation
(only for administrator users)
Digital video often does not show signal
impairment until it is too late due to the small
margin between acceptable quality and failure.
Constellation diagrams are an indispensable tool
to help detect the presence of noise, phase jitter,
interference, and gain compression, all of which
impact overall signal quality and thus reduce
Modulation Error Ratio (MER).
Ideally, each of the symbols in a constellation
diagram should display a clean dot indicating a
perfect signal.
The
H30FLEX
’s real time constellation, allows the
installer to assess the size and shape of the build
up of dots indicative of problems which contribute
to bit errors leading to service disruption
5.9.1. Main window
Below is a capture of a Constellation window with
a brief explanation of its features:
Modulation
List of measurements
with pass/fail indicators
Constellation
diagram
Selected channel
Change using
