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USER'S MANUAL. PROMAX-27
CHAN / BW / FREQ [F5]:
If channel you are analysing is defined as analogue, it will appear a warning
message on the screen. The message will be "Warning: CXX is defined as
ANALOGUE".
NOTE:
Access to the function SCAN / SPECTRUM switches depending on the type of
tuning you are doing.
In case you are tuning a signal using frequency, it will be displayed the
SPECTRUM function first.
In case you are tuning a signal using the predefined channels from the channel
plan, it will be displayed the SCAN function first.
4.2.5.1.1
CONSTELLATION DIAGRAM function
To access the IQ function (CONSTELLATION DIAGRAM):
1.- Press key
2.- Press key TV [F2].
3.- Go to "DIGITAL TV POWER METER" mode, pressing key [F1].
4.- Press key IQ [F2].
It be displayed the Constellation Diagram (Figure 24.-)
Figure 24.- Constellation diagram and measurements of a digital channel.
07/2008
Pressing this key you can navigate among editable
parameters. To change them, use the Cursor keys or
the alphanumeric keypad as appropriate. FREQ for
changing the frequency value of the tuned channel, BW
for changing the bandwidth and CHANNEL for
changing the channel of the channel plan.
[13].
DIGITAL TV
PreBER:
PostBER:
554.00 MHz/
C31 / CCIR
QAM64
ITU J.83/A
ALL
ANALOG
DIGITAL
SPECTRUM
01:43:09
88
36
PWR
MER
dBuV
dB
1.0E-8
3.0E-6
7.00 MHz
/2560 ksym/s
Unlocked
RESET
CHAN
Page 45
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