DekTec DTC-379 C2Xpress - Manual (Page 8)

© 2010 - 2015 DekTec Digital Video BV Page 8/18 DTC-379 C2Xpress Manual
Essential Tools for Digital-TV Professionals February 2015
DTC-379 C2Xpress
7.3. General DVB-C2 Parameters
This group of parameters allows you to specify the general DVB-C2 parameters.
Parameter Description
Bandwidth Channel raster bandwidth: 6 or 8 MHz
Version DVB-C2 version: V1.2.1 or V1.3.1
C2_Bandw. Bandwidth of the current C2 system specified in multiples of the pilot carrier
spacing.
Start freq. Start frequency of the current C2 System by means of the distance from 0 Hz
in multiples of the carrier spacing of the current C2 System.
Center freq. Center frequency. (Display only).
Guard itv. Guard Interval: 1/128 or 1/64
L1 TI mode Mode of time interleaving for L1-part2 of the C2 Frame: No time
interleaving, Best Fit, 4 or 8 OFDM symbols.
Reserved tone Reserved tone flag. If checked, reserved tones are activated. E.g. if PAPR is
enabled, reserved tones should be checked.
Early Warning System Early warning flag. If checked, the early warning system flag in the L1
signalling part 2 data is set (supported for DVB-C2 V1.3.1).
L1P2 change ctr Value send in the L1_PART2_CHANGE_COUNTER field of the L1 part 2
information. If the current value of the counter is >= 256, 0 is sent instead.
If different from 0, it is decremented at the end of every frame.
In combination with the “Append files option” it allows you to create IQ-files
with dynamically changing DVB-C2 paramters.
This option is disabled if L1 updates are provided.
NW ID Network ID. Uniquely identifies the DVB-C2 network
C2 ID C2 System ID. Uniquely identifies a C2 system within the DVB-C2 network
FFT size FFT size. (Display only).
#L1 updates The number of L1 part2 parameter updates. Tab pages appear in the GUI
for each L1 part2 parameter update. See also section 7.11.
The first update is applied immediately. After the last update is applied, it
loops to the first one.