Kathrein MSK 125 - Manual (Page 43)

43
TV MEASUREMENT
LEVEL MEASUREMENT OF “DVB-C”/“DVB-T/H” SIGNALS
ANALOGUE CABLE/DVB C SWITCH
Press once = Analogue cable TV
Press again = DVB-C
• Channel: Special channel 54
• Operating mode: TV DVB-C
• Measured level: 62.5 dBµV
LC display for DVB-C signals:
• MER modulation error rate: 28.5 dB
• Modulation = 256 QAM
• BER bit error rate: 1.7e-7
• Standard = DVB-C
• Carrier frequency offset: +0.10 MHz
DVB-C/DVB-T/H MER, BER AND OFFSET MEASUREMENT
The modulation error rate (MER), the bit error rate (BER) and
the carrier frequency offset can be measured to rate the digital
reception quality.
To call up DVB-C/DVB-T/H measurement:
In CABLE digital or Terrestrial digital reception mode press the
button.
If you do not wish to change the modulation type, press
• 1 = QAM 64 demodulation
• 2 = QAM 128 demodulation
• 3 = DOCSIS QAM 64 demodulation
• 4 = QAM 256 demodulation
After selecting the modulation type you are automatically directed
to the symbol rate entry.
Select the appropriate symbol rate by pressing to .
LC display:
• 1 = 6900 kS
• 2 = 6111 kS
• 3 = 6875 kS
• 4 = USER
Press the button to go to the menu for USER entry of the
symbol rate.
Enter the desired symbol rate and complete your entry by pressing
the button.
After selecting the symbol rate you are automatically directed to
the HF standard switch.