Standardized DVB-T2 RF specifications - DigitalEurope

Table 10 – C/N Requirements for Varying Echo Power Levels (PFP2)
Mode C/N dB
5 – 32KN 256Q 3/5 1/32 PP4 8MHz 26.2
6 – 32KN 256Q 3/5 1/8 PP2 7MHz 26.6
7 – 32KE 256Q 2/3 1/128 PP7 8MHz 27.5
8 – 32KE 256Q 2/3 1/16 PP4 8MHz 28.2
9 – 32KE 256Q 3/4 1/32 PP6 8MHz 30.4
Table 11 – Definition of Varying Echo Power Channel
Path No Relative
Power (dB)
Delay Frequency
Separation
1 0 0 None
2 0 95% GI None
3 -1 95% GI Pure 0.1Hz
10- 1- 3- Performance with echoes outside the guard interval
This test checks performance in the presence of either a single pre-echo or a single postecho
outside the guard interval, with the main path at zero delay. This is important in SFN
networks where it is possible to receive low level echoes outside the guard interval in certain
situations.
For the modes shown in Table 12, the attenuation of the single echo at the specified delay
points is measured to achieve PFP1. The receiver should achieve PFP1 with the echo level
greater than or equal to that shown in Table 12. All echoes have zero phase at channel
centre. No noise is added. The DVB-T2 signal should be set to -50 dBm at the tuner input.
For 7MHz channels, multiply the delay times in the tables by 8/7.
Table 12 – Long echo test profile (Echo Level for PFP1)
Mode Delay and Echo Level
5 – 32KN 256Q 3/5 1/32 PP4 8MHz Delay µs ±120 ±150 ±200 ±230 ±266
Echo level dB -2 -5 -8.5 -10 -11
6 – 32KN 256Q 3/5 1/8 PP2 7MHz Delay µs ±540 ±560 ±580 ±600 ±608
Echo level dB -4 -6 -7.5 -8.5 -9
7 – 32KE 256Q 2/3 1/128 PP7 8MHz Delay µs ±30 ±60 ±90 ±120 ±133
Echo level dB -2 -5.5 -8 -10 -10.5
8 – 32KE 256Q 2/3 1/16 PP4 8MHz Delay µs ±230 ±240 ±250 ±260 ±266
Echo level dB -2 -3.5 -5.5 -6.5 -7
9 – 32KE 256Q 3/4 1/32 PP6 8MHz Delay µs ±115 ±120 ±125 ±130 ±133
Echo level dB -2 -3 -4.5 -5.5 -6
>>10 of 27