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CXA2503AR Datasheet(PDF) 17 Page - Sony Corporation |
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CXA2503AR Datasheet(HTML) 17 Page - Sony Corporation |
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17 / 72 page  – 17 – CXA2503AR γ gain γ1 adjustment variable range γ2 adjustment variable range Filter characteristics Amount of BPF attenuation Amount of TRAP attenuation R-Y, B-Y and LPF characteristics Sync separation, TG block Input sync signal width sensitivity Sync separation input sensitivity 23.0 26.0 29.0 dB 12.0 15.0 18.0 dB 18.0 22.0 26.0 dB 0 IRE 100 IRE 100 IRE 0 IRE –16 –10 dB –16 –10 dB –7 –2 dB –8 –3 dB –40 –30 dB –40 –30 dB 0.8 1.0 1.3 MHz 2.0 µs 40 60 mV NTSC PAL Item Input SIG8 to (A). Adjust the non-inverted output black level at TP43 to 6 – 4.5V with serial bus register BRIGHT and the non- inverted output amplitude (white – black) at TP43 to 3.5V with serial bus register CONTRAST. Measure VG1, VG2 and VG3. G γ1 = 20 log (VG1/0.0357) G γ2 = 20 log (VG2/0.0357) G γ3 = 20 log (VG3/0.0357) (See Fig. 5 for definitions of VG1, VG2 and VG3.) Input SIG8 to (A) and adjust serial bus register BRIGHT so that the output at TP43 is 9Vp-p (black – black). Read the point where the gain of the non-inverted output at TP43 changes when serial bus register γ1 = 0H and 0FFH from the input signal IRE level. V γ1MN when γ1 = 0H, and Vγ1MX when γ1 = 0FFH. Input SIG8 to (A) and adjust serial bus register BRIGHT so that the output at TP43 is 9Vp-p (black – black). Read the point where the gain of the non-inverted output at TP43 changes when serial bus register γ2 = 0H and 0FFH from the input signal IRE level. V γ2MN when γ2 = 0H, and Vγ2MX when γ2 = 0FFH. Assume the chroma amplitude at TP52 when SIG5 (VL = 0mV) is input to (A) and SIG1 (0dB at input center frequency (3.58MHz or 4.43MHz)) is input to (B) as 0dB. Obtain the amount by which the output at TP52 is attenuated when the frequencies noted on the right are input. SW59 = A Input SIG2 (0dB, 3.58MHz or 4.43MHz) to (A) and measure the output at TP43. Assume the amplitude at TP43 during Y/C input mode as 0dB, and obtain the amount of attenuation during COMP input mode. Assume the amplitude of the 100kHz component of the output at TP43 when SIG5 (VL = 150mV) is input to (A) and SIG2 (0dB, 3.58MHz + 100kHz) is input to (B) as 0dB. Obtain the frequency which attenuates the beat component of the output by 3dB when the SIG2 frequency is increased with respect to 3.58MHz. Input SIG5 (VL = 0mV, VS = 143mV, WS variable) to (A) and confirm that it is synchronized with the HD output at TP22. Gradually narrow the WS of SIG5 from 4.7µs and obtain the WS at which synchronization with the HD output at TP22 is lost. Input SIG5 (VL = 0mV, WS = 4.7µs, VS variable) to (A) and confirm that it is synchronized with the HD output at TP22. Gradually reduce the VS of SIG5 from 143mV and obtain the VS at which synchronization with the HD output at TP22 is lost. G γ1 G γ2 G γ3 V γ1MN V γ1MX V γ2MN V γ2MX ATBPF ATRAPN ATRAPP DEMLPF WSSEP VSSEP Symbol Conditions Min. Typ. Max. Unit NTSC 1.5MHz PAL 2.0MHz NTSC 5.5MHz PAL 6.8MHz |
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Similar Description - CXA2503AR |
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