TFS236

Reference level for the relative attenuation a_rel of the TFS 236 is the minimum of the pass band attenuation a_min. The minimum of the pass band attenuation a_min is defined as the insertion loss a_e. The centre frequency f_c is the arithmetic mean value of the upper and lower frequencies at the 3 dB filter attenuation level relative to the insertion loss a_e. The nominal frequency f_N is fixed on 236,6 MHz without tolerance. The given values for the relative attenuation a_rel and for the group delay ripple have to be reached at the frequencies given below also if the centre frequency f_c is shifted due to the temperature coefficient of frequency TC_f in the operating temperature range and due to a production tolerance for the centre frequency f_c.