BridgeTech VB20 User Manual page 171

The following parameters are defined for each COFDM frequency:
Name: A name should be assigned to each frequency channel
Frequency: The COFDM centre frequency in MHz. Note that the center
Channel spacing: The channel spacing in MHz
Spectrum
inversion:
Guard interval: The guard interval may be Auto, 1/32, 1/16, 1/8 or 1/4
Transmission
mode:
ETR thresholds: Selection of the ETR threshold template that should be
PID thresholds: Selection of the PID threshold template that should be
Service
thresholds:
COFDM
thresholds:
VBC thresholds: Selection of the VBC threshold template that should be
Disable tuning: If this box is checked the transport stream associated with
It is also possible to add new frequencies manually by copying existing tuning list
entries using the Duplicate highlighted button.
Multi-edit functionality makes it possible to edit several threshold templates
simultaneously. Highlight the tuning list entries that should be edited and click the
Edit selected button.
Note that all tunings will automatically be ETR 290 analysed, and hence be part of the
round-robin loop unless the 'Disable tuning' box is checked.
2014 © BRIDGE Technologies Co AS - Bentsebrugata 20 - N-0476 Oslo, Norway - tel: +47 22 38 51 00 -
172
COFDM - Tuning setup - Edit:
frequency of COFDM transmissions is sometimes changed by
an offset of +/- 167kHz in order to avoid interference with
neighbouring analogue channels. In this case this frequency
setting should be adjusted accordingly.
Spectrum inversion may be normal or inverted
The transmission mode may be set to Auto, 2k or 8k
assigned to the current frequency
assigned to the current frequency
Selection of the Service threshold template that should be
assigned to the current frequency
Selection of the COFDM threshold template that should be
assigned to the current frequency
assigned to the current frequency
the current frequency will not be monitored
PROBE USERS' MANUAL VERSION 5.0
www.bridgetech.tv