DVB T RF Modulator

DVB T RF Modulator
Details:
Digital CATV Headend Encrpyted DVB-T/T2 to RF Transmodulator
Model: DMB-24E-CI
Highlights
1.Modules input in back panel with max 6 modules,each module 2*tuners with CI Slots input and demodulation,descrambling multi channel encryted signal to a cable network
2.Default 128*MPTS/SPTS UDP/IP input&IP OUT,2*ASI input/output
3.Easy to install into existing TV distribution systems
4.RF Output with 4/8/16 RF DVB-T/C/ISDB-T/ATSC option
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Description
Technical Parameters
Overview

 

DMB-24E-CI 12‑Tuner RF Broadcast Transmodulator (with CI Slots)

Product Overview

The DMB-24E-CI is a broadcast transmodulator supporting up to 12 independent DVB‑S/S2 satellite tuners for RF signal reception. It includes 12 CI slots for decrypting encrypted channels using CAM/CAS cards. Each input RF channel can be simultaneously output as an ASI transport stream for coaxial distribution and as an IP stream in UDP format (SPTS/MPTS). The RF output offers selectable configurations of 4, 8, or 16 carriers.

Key Features

Converts both free‑to‑air (FTA) and encrypted RF programs into alternative RF standards (e.g., DVB‑T, ISDB‑T, ATSC) and IP‑based transport streams.

Provides a web‑based management interface for easy configuration and monitoring, enabling seamless distribution of programs to local RF systems.

Typical Applications

Suitable for broadcast headends, cable TV operators, hospitality (hotels/resorts), educational campuses, healthcare facilities, and other institutions that require integrated signal conversion with conditional‑access support and flexible output formats.

 

Features:

 

Compact, High‑Density Integrated Platform​ – Accommodates 4, 8, or 12 DVB‑S/S2/S2X inputs, compatible with both free‑to‑air (FTA) and encrypted program signals. Equipped with embedded CI slots for decryption, the unit can demodulate and descramble multiple channels through 12 integrated DVB‑S/S2 satellite tuners featuring CI interfaces.

Demodulation, Remodulation, and Multiplexing in One​ – Serves not only as a transmodulator but also includes built‑in IP/ASI multiplexing functionality.

Flexible Multi‑Source Input via Modular Design​ – Accepts mixed signal sources through plug‑in modules, supporting up to six modules in total, with options such as:

One module: 4× FTA tuners

One module: 4× HDMI inputs

One module: 2× tuners + CI slots

Professional‑Grade Broadcasting Features​ – Provides robust PSI/SI table regeneration, service‑level multiplexing, and PID filtering.

Web‑Based Administration​ – Offers an intuitive web graphical user interface (GUI) for remote system management, configuration, and software upgrades.

 

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Specifications

 

FTA Tuners Input

DVB-T/T2 Tuner

Frequency range: 30MHz-1000Mhz

Bandwidth: 6Mhz, 7Mhz, 8Mhz

Level: -87 ~ -20dBm

Constellation: QPSK, 16QAM, 64QAM, 256QAM (Only DVB-T2)

FEC Demodulation: DVB-T: 1/2, 2/3, 3/4, 5/6, 7/8

DVB-T2: 1/2, 3/5, 2/3, 3/4, 4/5, 5/6

Guard Interval: DVB-T: 1/4, 1/8, 1/16, 1/32

DVB-T2: 1/4, 5/32, 1/8, 5/64, 1/16, 1/32, 1/64, 1/128

 

ISDB-T/Tb Tuner

Input frequency range: 30 ~ 900MHz

Bandwidth: 6MHz

Constellation: DQPSK, QPSK, 16QAM, 64QAM

Interleave: 0, 4, 8, 16

Guard Interval: 1/32, 1/16, 1/8, 1/4

Transmission mode: 2K, 4K, 8K (FFT)

FEC (Code Rate): 1/2, 2/3, 3/4, 5/6, 7/8

 

DVB-C Tuner

Input frequency range: 110 ~ 862MHz

DVB-C (J83.A, J83.C, NO Annex B)

Carrier: Annex A,Annex C

Constellation (QAM): 16, 32, 64, 128, 256, 64/256

Bandwidth (Mhz): 8, 6

Symbol Rate ( Mbaud): 5-7, 4.2-5.3

Tuner interface: Connecter F-female type

 

DVB-S/S2/S2X Tuner

Input frequency: 950-2150Mhz

Symbol rate: 1~54MSps (DVB-S QPSK)

1~60MSps (DVB-S2/S2X QPSK)

1~60MSps (DVB-S2/S2X 8PSK)

1~58MSps (DVB-S2/S2X 16APSK)

1~55MSps (DVB-S2/S2X 32APSK)

1~34MSps (DVB-S2/S2X 64APSK)

Signal strength: -65 ~ -25dBm

Half SyQuest Baseband filler (Roll off factor):

0.35 for DVB-S

0.15 to 0.35 for DVB-S2

0.05 to 0.35 for DVB-S2X

FEC demodulation: 1/2, 2/3, 3/4, 5/6, 7/8 (DVB-S QPSK)

1/4, 1/3, 2/5, 1/2, 2/3, 3/4, 4/5, 5/6, 8/9, 9/10 (DVB-S2 QPSK)

3/5, 2/3, 3/4, 5/6, 8/9, 9/10 (DVB-S2 8PSK)

2/3, 3/4, 4/5, 5/6, 8/9, 9/10 (DVB-S2 16APSK)

3/4, 4/5, 5/6, 8/9, 9/10 (DVB-S2 32APSK)

11/15, 7/9, 4/5, 5/6 (DVB-S2X 64APSK)

Demodulation mode: QPSK, 8PSK, 16APSK, 32APSK (Only DVB-S2)

LNB polarity selection: Vol 0, 13V, 18V Selectable

LNB band selection tone: 0/22Khz Selectable

Input Impedance: 75 Ω

FEC (Code Rate): 1/2, 2/3, 3/4, 5/6, 7/8

DiSEqC: DiSEqC 2.0 compliant

 

ATSC Tuner

Frequency range: 50–860 MHz

Key reference specification: ATSC A/53

Input level: -34 to +40 dBmV

Constellation: 8-VSB

Bandwidth: 6Mhz

 

Modulation RF Output Option

Modulation (4/8*RF DVB-T/ASTC/ISDB-T or 16/32 DVB-C for option)

Connector: 1 Port, F-Type, 75Ω

Output Return Loss: 14 dB

MER ≥ 40dB

RF output level: -20 ~ 0dbm, 0.1db step

Numbers of RF Channel: 4/8

Modulation Mode: DVB-C, DVB-T, ATSC, ISDB-T, DTMB option

 

DVB-T Modulation

Channel: DVB-T adjacent frequencies

Modulation standard: EN300744

Frequency range: 50-960Mhz,1Khz one step

Modulation standard: EN300744

Bandwidth: 6M, 7M, 8M

FFT mode: 2K, 8K

Constellation:QPSK, 16QAM, 64QAM

Guard Interval 1/4, 1/8, 1/16, 1/32

FEC 1/2, 2/3, 3/4, 5/6, 7/8

TS bit rate<31 Mbit/s

 

ATSC-T Modulation

Channel: 8VSB adjacent frequencies

Constellation: 8VSB

Frequency range: 50-960Mhz, 1Khz one step

Constellation: 8VSB

TS bit rate<19 Mbit/s

MER≥40 dB

 

DVB-C Modulation(16 or 32 DVB-C out option)

16* DVB-C Output Modulation

Channel: 16*DVB-C adjacent frequency RF out

Frequency range:50~960MHz,1Khz one step

Bandwidth range 192 Mhz between start frequency and end frequency,set 16 frequency within 192 Mhz bandwidth range

MER≥40 dB

symbol rate:5~7Mbaud

total output level adjustment -35~-5dBm by 0.1 dB step

DVB-C Standard J83.A (DVB-C, J83.B, J83.C)

Constellation (QAM):16,32,64,128, 256

 

Carrier

Annex A

Annex B

Annex C

Constellation

(QAM)

16,32,64,128, 256

64

256

64/256

Bandwidth

(Mhz)

8

6

6

6

Symbol Rate

( Mbaud)

5-7

5.057

5.361

4.2-5.3

 

32* DVB-C output Modulation

Channel:32*DVB-C non-adjacent frequency RF out

Frequency range:96~864MHz,1Khz one step

bandwidth range 768 Mhz,frequency points can be used flexible within bandwidth range

MER≥40 dB

symbol rate:5~7Mbaud

total output level adjustment -35~-5dBm by 0.1 dB step

DVB-C Standard J83.A (DVB-C, J83.B, J83.C)

 

Carrier

Annex A

Annex B

Annex C

Constellation

(QAM)

16,32,64,128, 256

64

256

64/256

Bandwidth

(Mhz)

8

6

6

6

Symbol Rate

( Mbaud)

5-7

5.057

5.361

4.2-5.3

 

ISDB-T Modulation

Channel: ISDB-T frequency

Frequency range: 50-960Mhz, 1Khz one step

ISDB-T standard ARIB STD-B31

Constellation: DQPSK, QPSK, 16QAM, 64QAM

Guard Interval: 1/32, 1/16, 1/8, 1/4

Transmission mode: 2K, 4K, 8K

Code rate: 1/2, 3/4, 5/6, 7/8

Bandwidth: 6MHz

TS bit rate<21 Mbit/s

MER ≥ 40 dB

 

DTMB Standard GB20600-2006

Constellation: 4QAM, 16QAM, 32QAM, 64QAM

Code rate: 0.4, 0.6, 0.8

Guard Interval: 420, 595, 945 IONS

 

Multiplexing

Maximum PID remapping 180 input per channel

PID remapping by automatically or manually

PSI/SI: SDI/PMT/TOT/PAT/BAT/CAT/TDT/NIT Insert

Accurate PCR adjusting

Max numbers: 4 or 8 mux for RF and 1 Mux for 1*MPTS

 

ASI I/O

DVB-ASI: 2 * ASI input and 2*ASI output, one for backup, 75Ω, BNC, 188Bytes

MPEG-2: TS over DVB-ASI (EN 50083-9)

ASI Selectable out: mirror of one MPTS

 

IP I/O Stream Output

IP I/O

RJ45 port: 100/1000M GbE Port,1*DATA port used for input and output

IP output: 1*MPTS & 127*SPTS UDP/RTP IP Output (4*RF out)

8*MPTS&512*SPTS when 8*RF out

IP input: 128*MPTS/SPTS UDP/IP

TS over UDP, unicast, and multicast streaming TS over IP

 

System

Configuration Interface: web-based

Remote upgrade: via network

Connector: RJ45, 10/100M Ethernet interface

 

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