QAM status - Stream info:
Packet length: Indicates if the transport stream packets are 188 or 204 bytes
Original network ID: The original network ID as specified in the NIT table
Network ID: The network ID as specified in the NIT table
Transport stream ID: The transport stream ID as specified in the PAT table
Total bitrate: Current total transport stream bitrate (including null packets – (PID 8191))
Min total bitrate: Minimum total transport stream bitrate (including null packets)
Max total bitrate: Maximum total transport stream bitrate (including null packets)
Effective bitrate: Current transport stream bitrate (excluding null packets)
Min effective bitrate: Minimum transport stream bitrate (excluding null packets)
Max effective bitrate: Maximum transport stream bitrate (excluding null packets)
QAM status - QAM demod info:
Pre FEC bit error rate: The bit error rate before forward error correction
Post FEC bit error rate: The bit error rate after forward error correction
Modulation error ratio: The modulation error ratio (MER)
Signal to noise ratio: Signal to noise ratio (SNR) in dB
Front end lock: A “bulb” indicating front end lock when green, red indicates no lock
AGC lock: A “bulb” indicating AGC lock when green, red indicates no lock
Carrier lock: A “bulb” indicating carrier lock when green, red indicates no lock
DVB mode lock: A “bulb” indicating DVB mode lock when green, red indicates no lock
Level:
This is a measure of the stream signal power. It is expressed according to
the level mode selection made in the Setup — ETR view:
dBm: in decibels relative to a reference value of 1mW
dBμV: in decibels relative to a reference value of 1μV
dBmV: in decibels relative to a reference value of 1mV
Frequency offset: The measured QAM center frequency offset.
Symbol rate offset: The measured QAM symbol rate offset.
QAM status - QAM tuning info:
Name: A name should be assigned to each frequency channel
Frequency: The QAM tuning frequency in MHz
Symbol rate: The QAM symbol rate in Msym/s
Modulation: The QAM modulation scheme - may be 16, 32, 64, 128 or 256
Mode (ITU-T J.83): The modulation mode: DVB-C (Annex A) or QAM-B (Annex B)
ETR thresholds: The name of the ETR threshold template assigned to the current frequency
VB2xx GigE User’s Manual version 5.4 199
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