5
HENM-70
Encoder & DVB-S2/S Modulator
USER’S MANUAL V5.6
Features
Input video signals, composite video, 3G –SDI, HD-SDI, SD-SDI or HDMI
are MPEG-4 encoded, together with 4 analogue audios, 2 stereo AES/EBU
channels or 4 digital audios embedded on the SDI signal. The video
formats can be 1080p (only in Standard Delay mode), 1080i, 720p, 576i or
480i. This transmitter also has a test pattern and test tone generator
available.
This device has a data channel available that allows transmitting user data
or GPS data as well as a Transport Stream ASI input so it can be used as a
repeater.
The encoder uses a H.264/MPEG-4 Part 10 video compression that provides
output bitrates from 1 Mbps to 216 Mbps and a MPEG-1 Layer II audio
compression which supplies different audio bit rates (128, 192, 256 or 384
Kbps).
Encoded signals can be encrypted using BISS-1 or BISS-E scrambling
system. Encrypted signal will only be received by the receivers that have a
valid descrambling key.
The transmitter system operation is very easy. It has a display and a
keyboard which make possible the configuration and monitorization of every
parameter of the equipment.
The equipment is fed with AC power supply from 100 to 240 V or with a DC
power supply from 8 to 36V.
Its excellent design, mechanical and electronic assembly make the HENM-
70 a robust and reliable solution.
DVB-S2 features
In case the HENM-70 encoder & modulator is needed to be used as a
satellite transmitter, it features an IF stage in the L band with an output
power level from -50 to +5 dBm and a L band output that provides a 10
MHz reference oscillator.
The HENM-70 uses single carrier or one modulation from the next available:
QPSK, 8PSK, 16APSK or 32APSK where the most robust is the QPSK one
and the one with the bigger bit rate is the 32APSK.
In addition, the European ETSI EN 302307 standard defines the following
LDPC coding rates: 1/4, 1/3, 2/5, 1/2, 3/5, 2/3, 3/4, 4/5, 5/6, 8/9, 9/10.
In the modulation step it is also included a roll off factor (0,20, 0,25, 0,35)
which is used to reduce the intersymbol interference where the value that
most reduces the interference but with less bandwidth is 0,20.
