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Constellation Diagram
In this mode is shown the Constellation Diagram and other related measures
(Fig. 32).
- QAM modulation type.
- Encoding type detected.
- Symbol rate (SR).
- Error rate obtained for the Post-BER digital signal (BER after FEC) indicated
by BER
- Error rate obtained for the Pre-BER digital signal (BER before FEC) indicated
by
BER.
- Error rate of modulation (MER).
- Quadrant shown
- Locked / Unlocked
To switch to the Input Channel Power, press fast and twice the rotary knob.
4.2.3.2.4
FREQUENCY Tuning CONFIGURATION
From the FREQUENCY TUNING mode, press the key CONFIG and then it will
appear the Configuration menu related to the frequency tuning.
Depending on the type of measurement, the Configuration menu changes.
There are three types of measurements in frequency tuning: ANALOGUE, DIGITAL
and LEVEL. Each one can be selected from the FREQ. MODE option on the
CONFIGURATION menu.
Page 32
C02
50.50MHz
CCIR
CHANNEL POWER
71dBuV
BW=9.1MHz C/N=
27dB
INTEGRATING
...
40
60
80 100 120
20
Figure 31.-
639.25MHz
QAM
32/DVB
SR=
6.875
BER: 4.8E-8
BER : 4.7E-7
MER= .28 dB
ALL
Locked
Figure 32.-
USER'S MANUAL.
PROMAX-10
SE
07/2011
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