ower state, which we defined as the maximum output transmit power within the channel bandwidth when the trans- mitter states OFF. Its required level shall be better than -79 dBm measured with a RRC filter response having a roll off a = 0.22 and a bandwidth equal to the chip rate. The time mask transmit ON/OFF defines the ramping time allowed for the BS between transmit OFF power and transmit ON power. The transmit power level VS. time meets the mask illustrated in Figure 5.4. Average ON Power 16 chips Burst without guard-period 76 chips OFF Power Figure 5.4 BS Transmit ON/OFF template (TDD). 5.3.6 Output RF Spectrum Emissions 5.3.6.1 Occupied Bandwidth and Out of Band Emission Occupied bandwidth implies a measure of the bandwidth containing 99% of the total integrated power of the transmitted spectrum, centred on the assigned channel fre- quency. In the TDD as well as FDD, the occupied channel bandwidth shall be less than 5 MHz based on a chip rate of 3.84 Mcps. Out of band emissions are unwanted emissions immediately outside the nominal chan- nel originating from the imperfect modulation process and non-linearity in the transmit- ter but excluding spurious emissions. A Spectrum emission mask and adjacent channel leakage power ratio specify out of band emission limits. 5.3.6.2 Spectrum Emission Mask The UE spectrum emission mask applies to frequencies that are between 2.5 MHz and 12.5 MHz away from the UE carrier frequency centre. The out of channel emission is specified relative to the UE output power measured in a 3.84 MHz bandwidth. Table 5.12 illustrates UE power emission values, which shall not exceed specified levels. The UTRA Transmission System Table 5.12 Spectrum Emission Mask Requirement Frequency offset from Minimum requirement Measurement carrier Af (MHz) (dBc) bandwidth (MHz) 2.5-3.5 -35-15 (Af - 2.5) 30 kHz 3.5-7.5 -35-1 (Af - 3.5) 7.5-8.5 -39-10 (Af - 7.5) 8.5-12.5 The first and last measurement position with a 30 kHz filter is 2.515 MHz and 3.485 MHz. The first and last measurement position with a