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Ascent IRD1581 1RU Tuner (or ASI) to IP gigabits IP Gateway is a head-end interface conversion device which supports SPTSx256, SPTSx32, and SPTSx20 (for versions with BISS function) output. It is integrated with tuner demodulation (or ASI input) and gateway functionality, and can demodulate a signal from 8 tuners into TS and packet the TS into IP packages or directly convert the TS from ASI input into IP packages and output the IP packages through different IP addresses and ports.

•    Integrated with demodulation and gateway function

•    Supports 8 channels tuner (ASI) input

•    Supports BISS descrambling (up to 120 Mbps)

•    Supports accurate PCR adjusting

•    Supports PID filtering, re-mapping (256xSPTS without PID re-mapping)

•    Supports PSI/SI rebuilding and editing

•    1 × GE output, maximum 800 Mbps bitrate output

•    SPTSx256, SPTSx32 or SPTSx20 (For version with BISS function) over UDP, RTP/RTSP, unicast and multicast

•    Supports DisEqc function

•    Supports LCD display and keyboard

•    Supports SNMP/Web operation (256 × SPTS without SNMP operation)


IRD1581 RF


8 × tuner inputs (DVB-S/DVB-S2 /DVB-T/DVB-T2/DVB-C/ISDB-T optional)

DVB-C: 47 MHz to 860 MHz, 16/32/64/128/256 QAM

DVB-S: 950 MHz to 2150 MHz, symbol rate: 2 to 45 Mbauds

DVB-S2: 950 MHz to 2150 MHz, symbol rate: QPSK: 1 Mbauds to 45Mbauds, 

            8PSK: 2 Mbauds to 30 Mbauds

DVB-T: 146 MHz to 862 MHz, 6/7/8 M bandwidth

DVB-T2: 44 MHz to 999 MHz, 6/7/8 M bandwidth

ISDB-T: 153 MHz to 862 MHz, 6/7/8M bandwidth

ATSC-T: 43 MHz to 1002 MHz, 6/7/8M bandwidth


8 × ASI inputs


1 × GE output, UDP, RTP/RTSP protocol, unicast and multicast

256 × SPTS output — Without BISS function

32 × SPTS output — Without BISS function

20 × SPTS output — With BISS function

BISS Descrambling

Mode 1, Mode E


Supports PID filtering, re-mapping(256xSPTS without PID re-mapping)

Supports accurate PCR adjusting

Supports PSI/SI rebuilding and editing

Transmission Bitrate

Maximum total bitrate is 800 Mbps


Power Supply

100 V AC to 240 V AC, 50/60 Hz

Power Consumption

20 W

Operating Temperature

0 to +45 °C

Storage Temperature

-20 °C to +80 °C

Dimensions (W x L x H)

482 mm × 410 mm × 44 mm


3.6 kg


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