Rainbow-electronics MAX3580 Manual do Utilizador descarregar pdf (Página 6)

MAX3580

Direct-Conversion TV Tuner

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TEST SCENARIO COMMENTS SPEC MINIMUM MAX3580 TYPICAL

MBRAI S2 Immunity/ACPR for N ±1 adjacent ch. 29dB 40dB

MBRAI S2 Immunity/ACPR N ±2 alternate ch. 40dB 43dB

MBRAI L3 Li near ity/cr ossm od . w i th N +2 and N +4 ch. 40dB 47dB

NorDig 16 QAM 2/3 S ensi ti vi ty at channel 21 ( 470 M H z) -84.1dBm -85.1dBm

NorDig QPSK 1/2 Sensitivity at channel 42 (642 MHz) -92.1dBm -94.8dBm

NorDig 64 QAM 7/8 Sensitivity at channel 59 (778 MHz) -74.7dBm -76dBm

Performance to Standards

The following is selected overall performance data for the

MAX3580 + digital demodulator.

Table 1 shows the typical overall performance as mea-

sured using the MAX3580 and one current production

DVB-T demodulator. This reference design is available

in NIM card form factor upon request.

MBRAI refers to standard MBRAI 04-102 IEC 62002-1

available from www.ansi.org.

NorDig refers to standard Unified 1.0.2 available from

www.nordig.org.

Modulation of wanted and interfering channel(s) is 8k

mode, 16 QAM, C/R = 3/4, GI = 1/4, sensitivity or

immunity Reference Bit Error Rate is 2 x 10e-4, unless

stated otherwise.

Table 1. Selected Typical MBRAI and NorDig Performance

1 2 3 4 5 6 7 8 9 10 11 ... 20 21

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