类型 | 其他公共广播系统 | 品牌 | chieta |
型号 | 3688SD |
front panel | key number | 7 keys | yes | |
front panel key | 7 keys | yes | ||
front panel display content | led(4*[8.]) | led(4*[8.]) | ||
common interface slot | x2 | x 2 | ||
rear panel | rf input head (for antenna connection) | iec female 9.5 mm x1 | yes | |
rf output head (for loop through) | f-type, 75ohm(bs2s7vz7306) | yes | ||
usb 2.0 | high-speed(480mbps) a-type (x1) | yes | ||
hdmi | high definition media interface, passed 1.3b1 certification | x1 | [option(ready)] | |
rca output | 6 rca (cvbs/a.left/a.right, ypbpr) | yes | ||
spdif | fiber | yes | ||
rs232 | 9-pin d-type, 115200bps | yes | [option(ready)] | |
ypbpr <-> scart switch key | support external jumper or switch | yes | ||
power switch | on/off | yes | ||
power supply | 24v | lnb power supply 24v±10/% |
yes | |
12v | audio op power supply 12v±10% |
yes | ||
5v | tuner power supply 5v±5% |
yes | ||
3.3v | chip power supply 3.3v±5% |
yes | ||
2.6v | ddr ram power supply 2.6v±0.1v |
yes | ||
1.2v | chip core power supply 1.2v±3% |
yes | ||
power consumption | power supply | ac100~250v; 50/60hz | 220v 50hz | |
power consumption | main board: normal work: <10w(w/o external device) standby: <0.6w margin: >10% |
power module efficient: 1. normal work: >70% 2. standby: >60% |
||
lnb power & polarisation | power | vertical +13±1v on/off | yes | |
horizontal 18±1v on/off | yes | |||
current | max. 550ma (overload protection) | yes | ||
diseqc control | diseqc 1.0, 1.2, usals | diseqc 1.0, 1.2, 1.3(usals) | yes | |
22k tone | 22k tone frequency | 22±1khz; 0.5±0.2v | yes | |
remote control spec | infra-red frequency | 38khz | yes | |
key spec | 39 keys | yes | ||
batteries | 2 aaa type | yes | ||
e-rom | empty flash upgrade | yes | [option(ready)] | |
system specification | ||||
dvb-s2 | satellite receiver standard | etsi en 302 307 | yes | |
constellation | qpsk / 8psk/ 16apsk | yes | ||
fec | qpsk:1/4,1/3,2/5,1/2,3/5,2/3,3/4,4/5,5/6,8/9,9/10 | yes | ||
8psk:3/5,2/3,3/4,5/6,8/9,9/10 | yes | |||
16apsk:2/3,3/4,4/5,5/6,8/9,9/10 | yes | |||
maximum expected input symbol rate | qpsk:45ms/s 8psk: 30ms/s |
yes | ||
maximum bitrate | dvb-s: qpsk max: 45 x 2 x 7/8 = 78.75mbit/s dvb-s2: qpsk max:40m*2*9/10 = 72mb/s 8psk max:30m*3*9/10 = 81mb/s |
yes | ||
rolloff | dvb-s rolloff 35% dvb-s2 rolloff: 20%, 25%, 35% |
yes | ||
diseqc | diseqc 1.0 | off, 1/2-2/2, 1/4-4/4 | yes | |
diseqc 1.2 (positioner) | yes | |||
version 1.3 (usals) | usals supports | yes | ||
22khz on/off | 13/18 vdc & 22 khz set up | yes | ||
video | transport stream | mpeg-2 iso/iec13818 | yes | |
video input rate | max. 80mbit/s @ mpeg2 | yes | ||
max. 25mbit/s @ h.264/avc | yes | |||
video decoding (mpeg profile level) | mpeg-1 | yes | ||
mpeg-2 main profile @ main level(sd) | yes | |||
divx -- no | no | |||
h.264 mp@level 3 (sd) | yes | |||
video output | 4 video dac | yes | ||
cvbs x1 (video format is constant @ 576i or 480i) | yes | |||
ypbpr (video format will be default @ auto) | yes | |||
output video resolution | 480i,480p,576i,576p | yes | ||
screen aspect ratio | 16:9 wide screen, 4:3 letter box, 4:3 pan scan | yes | ||
audio | audio decoder | mpeg1 layer i, mpeg1 layer ii, mpeg1 layer iii, | yes | |
mp3 decoder | yes | |||
wma decoder | no | |||
aac decoder | mpeg-4 aacplus v1 2-channel | yes | ||
ac3 | check dolby license | yes | ||
dvr | usb hdd | fat32 & ntfs | yes | |
usb | read/wirte usb mass storage device | usb flash disk, usb hdd box, etc. not support hub. | yes(show message when detect overloading) | |
software feature on usb | jpg playback/ mp3 playback/ fw upgarde/ dvr/time shift | yes | ||
hdmi features | ||||
hdmi | format | 480i/576i/480p/576p | yes |