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| 17 december 2008 specification for crystal filter: q f 2 3 . 1 - 1 2 5 0 0 / 0 2 1. general 1.1. package : 1.2. t ype name: qf 2 3 . 1 - 1 25 00/0 2 1.3. number of poles: 6 1.4. o perating temperature range: - 2 0 c to + 70 c 1.5. storage temperature range: - 4 5 c to + 85 c 2. electric values 2.1. n ominal centre frequency fo: 23 . 1 mhz 2.2. pass band 2.2.1. bandwidth between 1 db - frequencies: > fo ? 62.5 khz 2.2.2. ripple at fo ? 62.5 khz : < 1. 0 db peak to peak 2.2.3 . insertion loss: < 5 . 0 db ( measured on smallest attenuation in pass band ) 2.3. stop band 2.3.1. fo - 550 mhz > 60 db 2.3.2 . fo + 490 m hz > 6 0 db exc ept spurious 2.3.3 . alternate attenuation: > 60 db except spurious 2.3.4. spurious responses ( fo + 490..+1500 khz ): > 30 db 2.4. terminating impedance ( input and output ): 50 ? // 0 pf 2.5. maximum input power level: +10 / +20 ( work ing / non - damaged ) 3 . marking : m anufacturer , date code qf 23 . 1 - 1 2500/02 4. environment conditions : corresponding to vectron cf001 standard _____________________________________________________________________________________ edited by: date: _____________ ______ ____________ name: ___________ ___ ________________
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