Select Page

ASI or IP Encoded Input to DVB-S/S2 RF Output 

High Reliability DSNG or Uplink Satellite Modulator with multiple Redundancy

TWO MODELS AVAILABLE: L-band or IF (Intermediate Frequency)

H-4ASI-DVBS2 –  ( 950Mhz – 2100Mhz)   L-band  RF output

 H-4ASI-DVBS2-IF  – IF (50-200mhz) RF output  

Input: 1x ASI + 3x Hot Backup 

Outputs: 1x DVB-S or DVB-S2 Carrier  or IF

Thor DVB-S2 modulators are built to the highest standards and fully comply with the second generation standard for satellite modulation of digital video broadcast streams. This platform is able to ingest a single program or multi program transport stream in either ASI or IP (MPEG-TS UDP) format.  The chassis modulates the entire transport stream, along with any secondary programs and closed caption PIDs.  For the highest reliability applications, an additional 3 ASI program stream inputs are provided and constantly monitored for stream integrity.  With all four inputs constantly monitored for faults in the bit stream; the modulator can intelligently switch from one input to another the second a fault is detected.  This allows a constant error free output to the DVB-S2 carrier.  The processor recovers quickly enough to prevent even a single dropped frame in the output stream.  Other options include redundant power supplies. 

In addition to reliability and redundant inputs; Thor satellite modulators provide many other useful features to extend the functionality of the platform.  For content protection and encryption, the modulator supports BISS program stream scrambling for protecting your content.  This prevents unauthorized access to the content by making the RF channel unreadable without a pre shared BISS decryption key.  This convenient content protection is used worldwide for affiliate links and SNG uplinks.  Other features include 10 MHz synchronization on both 10 MHz reference inputs and outputs.  For stability, the system uses a high reliability crystal oscillator that is fully temperature controlled.  This provides high reliability frequency locking down to 0.1 ppm stability.

Carrier grade DVB-S & DVB-S2 satellite modulator for 3x redundant hot inputs for highest reliability and fall over protection.  Provides latest generation support for 16APSK and 32APSK modulation constellations.


  • Fully Compliaint with DVB-S2/ DVB-S Standards
  • 4 Fully active ASI inputs with automatic fallover when TS errors are detected
  • Supports input from IP network stream in UDP or IGMP multicast format
  • Multiple constellation support: QPSK, 8APSK, 16APSK, and 32APSK outputs
  • Temperature controlled crystal oscillator with 0.1 ppm frequency output
  • Supports 10 MHz coupling through 10 MHz input and output clock ports
  • Supports 24VDC power over coax on RF output port to power transmitter
  • Supports BISS encryption standard for conditional access & content protection
  • Output Frequency range of 950-2150 MHz with 10 KHz incremental steps

Model Selection

TWO MODELS AVAILABLE: Lband or IF (Intermediate Frequency)

Part Number#  H-4ASI-DVBS2  –  ( 950Mhz – 2100Mhz)   L-band  RF output

Part Number#  H-4ASI-DVBS2-IF  – IF (50-200mhz) RF output  


Input Interface

ASI Supports 188/204 byte packet input

1×ASI input, 1xRF input for mix\

Supported Resolutions

100 Mbps UDP Stream on RJ-45

SNF Output


1xDVB-S/S2 RF output

2xASI mirrored output

IP (MPTS) out over UDP (RJ45, 100M)


Clock Refference

10 MHz Clock Input Reference on BNC

RF Parameters

RF Range: 950 – 2150 MHz with 10 kHz Steps

RF Level Adjustment: -10 to -41.5 dBm


RF Connector: Type-N  50Ω

RF output: 950.00-1050.00 MHz, 1Khz step

DVB-S/S2 Modulation Section


BNC Connector: 1-90 Mbps

Programs Selected by PID

Programs Muxed to all Outputs

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

DVB-S2 QPSK: FEC 1/2,3/5,2/3,3/4,4/5,5/6,8/9,9/10

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

DVB-S and DVB-S2 QPSK Symbol rate: 0.05-40.0Msps

DVB-S2 8PSK Symbol rate: 0.05-26.0Msps

DVB-S Roll Off: 0.35

DVB-S2 Roll Off: 0.35, 0.25, 0.2

Output level: -30db~-10.0db



Local Control

LCD + control buttons

Remote Control




RF 24V Power Out


Physical Specification

IPTV Input

CIS Insert


Unicast and Multicast Supported

Supported – Compliant with ETSI TS 103 129 V1.1.1 (2013-05) (DVB-CID).

Power Input

100-240 VAC Auto Switching ~ 20 W / AC 100-240V 50/60Hz


19″ x 18″ x 1.75″ / 482×300×44mm (W*L*H)


9 lb / 3.5kg

Operating Temperature

0~45?(operation), -20~80?(storage)