Using the Equipment
- FACTORY IMAGE USED
- POST FAILED
• Modulation – This is the current modulation detected, this can have the values:
- DVB-T
- DVB-T2
- Unknown
• Bandwidth – This can have the values:
- 8 MHz
- 7 MHz
- 6 MHz
• Demodulator Lock – This defines in the DVB-T/T2 demodulator is locked, this
can have the values:
- Locked
- Unlocked
- Not Detected
• Carrier frequency offset – This is the difference between the detected centre
frequency and the configured centre frequency. It is given in kHz.
• Bit Error Ratios – The unit displays the following BERs for DVB-T:
- Pre-Viterbi BER (DVB-T only) – Displays values in the range 1·10
-7
and 1.
- Pre-Reed-Solomon BER (DVB-T only) – Displays values in the range 1·10
-9
and 1.
The unit displays the following values for DVB-T2:
- Pre-LDPC BER (DVB-T2 only) – Displays values in the range 1·10
-7
and 1.
- Pre-BCH BER (DVB-T2 only) – Displays values in the range 1·10
-9
and 1.
Note: These are only shown if the demodulator is locked to a valid signal. The
minimum values mean no error.
• MER – Modulation error ratio in dB.
• MER Margin – Shows how far we are in dB from the QEF (Quasi Error Free)
limit, where the margin is 0. An alarm is linked to this status whose limit can be
customized. Its limit is 0 by default.
• RS Errors – Errors detected by the RS decoder in one second (DVB-T only).
• FER – The frame error rate (DVB-T2 only) or errors detected by the BCH
decoder (DVB-T only).
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