DekTec DTC-378 T2Xpress - Manual (Page 25)

© 2009-2015 DekTec Digital Video BV Page 25/27 DTC-378 T2Xpress Manual
Essential Tools for Digital-TV Professionals February 2015
DTC-378 T2Xpress
If the Enable box is checked, the transmitter signature using the FEF part is enabled and the
signature information can be specified.
- ID1
Identification sent during the first signature period
- ID2
Identification sent during the second signature period
7.13. Channel Fading
The channel-fading tab allows you to specify the parameters for the channel simulator:
- White noise
- Reflections (multipath echo’s)
- Doppler effects because of a moving receiver
If MISO is used, the number of channel-simulation parameter sets you can specify depends on the
selected MISO mode:
- For modes Tx1 and Tx2, the parameters for a single fading path can be set
- If “Both Tx1 and Tx2” or “Tx1+Tx2” is specified, two independent parameter sets can be
specified: One for Tx1, the other for Tx2
Note: If the mode “Tx1+Tx2” is selected, only one AWGN noise source can be specified, that is
added to the summed signal.
7.13.1. Channel Simulator
The Channel-Simulator group contains the overall enable box.
If checked, channel simulation is enabled and noise and fading-path parameters can be specified. If
unchecked, no channel simulation is applied.
The File Open button enables you to load a previously saved set of channel-simulation settings.
The File Save button allows you to save the current settings.
7.13.2. AWGN
The AWGN group enables you to specify parameters for the addition of Gaussian-distributed noise
to the I/Q samples. If the Enable box is checked, the Signal-To-Noise ratio relative to the original
signal can be specified.
AWGN parameters