Home Products ASI/IP to RF Modulators (T2/S2/C/ISDB/ATSC) IP to QAM Modulator with 32 RF carries
IP to QAM Modulator with 32 RF carries
IP to QAM Modulator with 32 RF carries

IP to QAM Modulator with 32 RF carries

Product ID : STPM-32
Product Attributes :

Input: IP with 3 GE ports (max 1024 IP in)

Output: 32 non-adjacent QAM carriers, 32 IP output

Output Level:50~960MHz, 1kHz stepping

RF Range:50~960MHz

data sheet of qam moduatorDownload Specification of STPM-32

user manual of qam moduatorDownload the User Manual of STPM-32

Product Description


STPM-32 IP QAM modulator is a cost-effective device that supports 256 IP input through the GE port and 32 non-adjacent carriers (50MHz~960MHz) output through the RF output interface. The QAM modulator is also characterized by a high integrated level, high performance, and low cost. This is very adaptable to the new generation DTV broadcasting system.


*  3 GE ports (max 1024 IP in):

    Data1 & Data2 bi-directional ports, max 512 IP in, 32 IP out

    Data port (located on front panel), max 128 IP in

*  Max 840Mbps for each GE input

*  Supports accurate PCR adjusting/CA filtering, PID remapping and PSI/SI editing

*  Supports up to 256 PIDS remapping per channel

*  Support 32 IP output through Data1 & Data2 over UDP/RTP/RTSP

*  32 non-adjacent QAM carriers output, compliant to DVB-C (EN 300 429) and ITU-T J.83 A/B

*  Supports RS (204,188) encoding

*  Support Web-based Network management

Principle Chart

Principle Chart for best qam moduattor


Carrier Setting Illustration

Carrier Setting Illustration for qam modualtor

*System Connection Sample (IP Based)

qam moduator connection

Technical Parameter

 best qam modullador specification

How to select the output bandwidth of one modulator?

Take a client's TV listings as an example: 

John told us “RF carrier output needs to be configurable between DVB-C Frequency Range, preferred Frequency Range is 194 ~ 650 MHz.”, and give us his programs table:

frequency programs table

1. From the table, we know we need a frequency range is:586-194=392MHz

2. We know the QAM RF output range is: 50~960MHz, while for one common modulator the max output is 192MHz

qam moduator output range

STPM-32 RF*2 output model is suitable.

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