CableWorld CW-4000 Series User Manual

CW-4871, -72, -73, -74, -75, -76, -78
DEMODULATOR QUAD
Budapest XI., Kondorfa u 6/B
Hungary
Ltd.
Tel.: ++36 1 204 7815
Fax: ++36 1 204 7839
Internet: www.cableworld.hu
E-mail: cableworld@cableworld.hu
A HUNGARIAN - AMERICAN LTD. COMPANY FOR MANUFACTURE AND SALES OF CABLE TV EQUIPMENT
CW-4000
DIGITAL TELEVISION DEVICES
CW-4871, -72 QPSK DEMODULATOR
CW-4873, -74 QAM DEMODULATOR
CW-4875, -76 OFDM DEMODULATOR
CW-4878 ASI DESCRAMBLER
Dear User!
Digital technology forms our environment day by day,
and we can enjoy its advantages in more and more fields
everyday. These are the years, when digital television tech-
nology takes over the leading role, thus it is time to get it
know and make preparations to use it.
CableWorld Ltd. has carried on developing activity in
the field of digital television for several years. Its aim is to
create a transparent, versatile and universal system, which
makes this complex and complicated technology for both
engineers and other technicians as manageable and lucid as
analogue technology was.
The input units of the digital headend receive signals
coming from satellites, cables and terrestrial transmitters,
and convert them into transport stream signals.
The transport stream is nothing else as a vast data
stream consisting of numerous elementary streams. A part of
these streams carries picture-, sound- and data signals.
The CW-487x series input units consist of 4 independ-
ent receiver units each, all having ASI outputs.
The connecting link between the pieces of software and
hardware is the CW-Net Data Transmission and Device
Control System.
1. MECHANICAL CONSTRUCTION
The CW-4871 and -72 QPSK Demodulators, the CW-
4873 and -74 QAM Demodulators and the CW-4875
and -76 OFDM Demodulators and CW-4878 ASI
Descrambler are built in standard 19" × 1 HU instru-
ment frame. They are delivered along with following
accessories:
1. Power cord 1 ea.
2. Spare fuse T1.25 A for CW-4871, -73, -75 and -78 1 ea.
T2.5 A for CW-4872, -74, -76 1 ea.
(placed in the fuse holder mounting)
3. Crossover cable with RJ45 connectors 1 ea.
The power consumption of the devices is very low
therefore no cooling or ventilation is needed.
39/06
KÁBEL-TV RENDSZEREKET GYÁRTÓ ÉS FORGALMAZÓ MAGYAR - AMERIKAI KFT.
USER'S GUIDE
2. ELECTRICAL CONSTRUCTION
The CW-4871 and -72 QPSK Demodulators proc-
ess the signals coming from satellites, the CW-4873
and -74 QAM Demodulators process the signals
coming from cable networks, whereas the CW-4875
and -76 OFDM Demodulators process the signals
coming from terrestrial transmitters, and CW-4878
ASI Descrambler processes the transport stream
(ASI signal). All 7 types consist of 4 receiver units
each, and all receiver units have double ASI outputs.
The devices are equipped with an own switching
mode power supply. The supply voltage of the inter-
face circuits is +3.3 V, but the signal processing cir-
cuits are supplied with a voltage as low as +1.8 V.
The power consumption of the devices is low, and
they are suitable for continuous service.
All types are put in operation in the same way.
1. Connect the device to the computer through
crossover cable.
2. Set the device to the desired IP address.
The devices are shipped with IP address set to
10.123.13.101. When using in network, the IP address
must be changed to avoid conflict between the IP ad-
dresses of multiple devices.
For changing the IP address download, install and
use the SW-4800 software. All knowledge necessary
for this are included in the Help file of the software.
After having installed the software, run it by clicking the
CW-Net Principal icon, and in the IP Address Platform
change the IP address of the device. In this example let
the new address be 102 instead of the 101.
3. Install software corresponding to the type of the
device:
SW-4871 for the CW-4871, -72* QPSK Demodulator Quad
SW-4873 for the CW-4873, -74* QAM Demodulator Quad
SW-4875 for the CW-4875, -76* OFDM Demodulator Quad
SW-4872 for the CW-4878 ASI Descrambler Quad
* in the a CW-4872, -74 and 76 types install also the SW-4872
CAM Analyzer & Programmer software (s. page 4).