英文说明：
250 mhz ibm powerpc (350 mips). linuxop, the dm500 supports the standard linux api (directfb,linux-fb, lirc, ... ) features: 1)250mhz ibm powerpc processor (350 mips) 2)linuxoperating system 3)1x smartcard-reader 4)mpeg2hardware decoding 5)100mbitfull duplex ethernet interface 6)2led status 7)unlimitedchannel lists for tv/radio 8)channel-changetime 1 second 9)fullautomatic service scan 10)supportsdirectly bouquet-lists (indirect unlimited) 11)supportsepg (electronic program guide) 12)supportsmultiple lnb-switching control (supports diseqc) 13)fullyadaptable osd in many languages (skin-support) 14)spdi/finterface for digital bit stream out (ac-3 / dts) 15)1x scart-interfaces (fully controlled by software) technical specification: dbs-tuner: frequencyrange 950 …. 2150 mhz signal level - 65 dbm …. - 25 dbm signal-to-noise level 12 db max. dbs-tuner input connector f-type female input impedance 75 ohm afc +/- 3 mhz demodulation shaped qpsk input symbol rate 2 …. 45 mbaud/s, scpc / mcpc fec viterbi and reed-solomon viterbirate 1/2, 2/3, 3/4, 5/6, 7/8, automatic assimilation roll-off factor 35 % demultiplexing according iso 13818-1 video decoder: video compression mpeg-2 and mpeg-1 compatible video standard pal g/ 25 hz video formats 4:3 / 16:9 footage 16:9, automatic assimilation for 16:9 tv-device (over scart) letterbox precolating for 4:3 tv-device audio decoder: audiokompression mpeg-1 & mpeg-2 layer i and ii audio mode dual (main/sub), stereo frequency: 32 khz, 44.1 khz, 48 khz, 16 khz, 22.05 khz, 24 khz output analog: output level l/r 0,5 vss on 600 ohm thd > 60 db (1 khz) crosstalk -65 db output digital: output level 0,5 vss on 75 ohm sampled data filtering 32 khz, 44.1 khz, 48 khz s/pdif-output optical (ac3) video parameter: input level fbas 1 vss +/- 0.3 db on 75 ohm teletext filter in conformity with ets 300 472 standard tv-scart: output: fbas,rgb,s-vhs over osd selectable serielle interface rs 232: typ rs232 bidirectional bit rate 115,2 kbit/s max. plug connector sub-d-9 function update of firmware and preprogramming ethernet: 100 mbit compatible, bi-direktional interface function update of firmware and preprogramming lnb power and polarisation: lnb current 500ma max. short-circuit-proof lnb voltage vertical 14v without load, > 11,5v at 400ma lnb voltage horizontal 20v without load, > 17,3v at 400ma lnb shut-off at standby-mode count of active satellite position: diseqc 1.0/1.2 sat position / sat option diseqc - rotor control power consumption: 10w / 12v input voltage: dc12v,alternating acurrent +/- 15% extern power supply: input: 110-240v ac / 50-60hz / 0,6a output: 12v = / 1a others: ambient temperature +15°c...+35°c humidity 80%
深圳振荣电子有限公司
魏兴荣
13418999977
福田区京海花园24A