TABLE 5 Table of break points corresponding to Fig. 17 for 6 MHz DVB-T systems Frequency relative to the centre Relative level in a 4 kHz of the 6 MHz channel measurement bandwidth (MHz) (dB) 15 99 9 91 3.2 66.5 2.86 31.5 2.86 31.5 3.2 66.5 9 91 15 99 TABLE 6 Table of end point value and next-to-end point values to be used in conjunction with Fig. 17 and Table 5, applicable to a range of transmitter output powers, for 6 MHz DVB-T systems End point value(1) Power range Corresponding spurious level (4 kHz measurement bandwidth) (dBW) (100 kHz measurement (dB) bandwidth) 89 (P 9) 36 dBm – – P 9 89 9 < 29 75 dBc P 89 (P 29) 29 < 39 16 dBm P – – 99 39 < 50 85 dBc P 99 (P 50) 50 5 dBm P – – The next-to-end point value is 8 dB higher than the end point value and all of these values are (1) subject to an upper limit equal to dB. –66.5 1.2 6 MHz channelling ISDB-T systems For 6 MHz ISDBT systems, the OoB domain extends from 3 MHz (i.e. 0.5 6 MHz) to 15 MHz (i.e. 2.5 6 MHz) relative to channel centre. Spectrum limit mask for a 6 MHz ISDBT system is shown in Fig. 18. The related break points are given in Table 7. The relative power level is defined in a reference bandwidth of 4 kHz. The 0 dB reference level corresponds to the mean output power measured in the channel bandwidth. These emission limits apply when transmitter power is above 39 dBW. FIGURE 18 Spectrum mask for 6 MHz ISDB-T (for > 39 dBW) P
TABLE 5 Table of break points corresponding to Fig. 17 for 6 MHz DVB-T systems Frequency relative to the centre of the 6 MHz channel (MHz) Relative level in a 4 kHz measurement bandwidth (dB) 15 99 9 91 3.2 66.5 2.86 31.5 2.86 31.5 3.2 66.5 9 91 15 99 TABLE 6 Table of end point value and next-to-end point values to be used in conjunction with Fig. 17 and Table 5, applicable to a range of transmitter output powers, for 6 MHz DVB-T systems End point value(1) (4 kHz measurement bandwidth) (dB) Power range (dBW) Corresponding spurious level (100 kHz measurement bandwidth) 89 – (P – 9) P 9 36 dBm 89 9 < P 29 75 dBc 89 – (P – 29) 29 < P 39 16 dBm 99 39 < P 50 85 dBc 99 – (P – 50) 50 P 5 dBm (1) The next-to-end point value is 8 dB higher than the end point value and all of these values are subject to an upper limit equal to –66.5 dB. 1.2 6 MHz channelling ISDB-T systems For 6 MHz ISDBT systems, the OoB domain extends from 3 MHz (i.e. 0.5 6 MHz) to 15 MHz (i.e. 2.5 6 MHz) relative to channel centre. Spectrum limit mask for a 6 MHz ISDBT system is shown in Fig. 18. The related break points are given in Table 7. The relative power level is defined in a reference bandwidth of 4 kHz. The 0 dB reference level corresponds to the mean output power measured in the channel bandwidth. These emission limits apply when transmitter power is above 39 dBW. FIGURE 18 Spectrum mask for 6 MHz ISDB-T (for P > 39 dBW)
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