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HDTV 1000 ASI LAN / HDTV 1001 C
Testing the signal to noise ratio
In this menu you can estimate the quality of the input signal.
Bx 4A
12.0 dB
C/N
(+ 9.6) OK
1
Current signal to noise ratio
2
This value shows the difference between the quality of the input signal
and the threshold of the tuner at this type of modulation.
At a value lower than “
5
” picture dropouts can occur.
3
If “
OK
»ÊÃÊà Ü]ÊÌ iÊÃ}>ÊÌÊÃiÊÀ>ÌÊÃÊ°
If a value < 5 is shown under
2
the display changes from “
OK
” to “
??
”.
In this case test the input signal.
—>
Ê Ê>``ÌÊÌÊÌ iÊ`V>ÌÀÊÊÌ iÊ`ë>Þ]ÊÌ iÀiÊÃÊ>ÃÊ>ÊÃÌ>ÌÕÃÊÊÜ V Ê
indicates the quality of the received transport stream:
LED indicator
Indication
Green
Signal quality is good
Yellow
Signal quality is poor
Red
No signal
Off
The channel strip (modulator)
is switched off
Bx 4A
11835 -0.6
FREQ
CN 14
Å
Ï
/
Bx 4A
12.0 dB
C/N
(+ 9.6) OK
Anzeige: Signalqualität
Display: Signal quality
M
Status LED
Channel strip "B"
Status LED
Channel strip "A"