Post on 30-May-2018
8/14/2019 1003 Encoder
1/4
TEST REPORT
02-03/2010
JiuzhouDVE-4QExcellentMPEG-2 encoderforuseinlocal
cableorterrestrial networks
8/14/2019 1003 Encoder
2/441www.TELE-satellite.com 02-03/2010 TELE-satellite Global Digital TV Magazine
8/14/2019 1003 Encoder
3/4
42 TELE-satellite Global Digital TV Magazine 02-03/2010 www.TELE-satellite.com
Transport stream generated at 720x576 resolution and high bitrate
Transport stream generated at 352x576 resolution and high bitrate
Transport stream generated at 704x480 resolution and high bitrate
Transport stream generated at 720x576 resolution and low bitrate
Setting the channel bitrate
Instrument specification
reveals that the input can be
either in PAL or NTSC system
the encoder will adjust to it
automatically. There are two
output BNC connectors but
with exactly the same signal.
This is where the transport
stream is output. So, if nec-
essary, you can connect two
modulators to the encoder
or a modulator and transport
stream analyzer.
Except for the inputs and
outputs, there are RS-232
and Ethernet interfaces as
well as power socket and
switch on the rear panel.
Interesting that there is no
cooling fan. Quick check in
the user manual revealed that
the device consumed only
30W so the same amount as
a regular satellite tv receiver.
No wonder a cooling fan was
not embedded. The encoder
we received for test was dedi-
cated for 220 V 10% mains
voltage and ambient temper-
ature 540 C. The manufac-turer recommends assuring
good ventilation for the unit
and considering air condition-
ing of the entire room. Indeed,
the headend stations are usu-
ally chock full of different
stuff and taking care of good
ventilation is a must.
InstallationAfter power up, the instru-
ment initialize itself whatlasts about 40 seconds, then
it shows software and hard-
ware version. You can press
now OK button to enter the
main menu. The menu con-
sists of four items: channel
settings, multiplex settings,
system settings and check
the warning information.
Arrows up/down are used to
switch between menu items,
OK enters the item.
Channel settings menu is
used to set proper param-
eters for each A/V input. You
can choose between: Auto,
PAL or NTSC. Next item allows
you to set the sequence of I,
B and P frames in the GOP
(Group of Pictures): IP, IBP
or IBBP. Then, you can adjust
luminance, contrast, satura-
tion and hue for the input in
the next 4 submenus. In this
way, you can compensate for
imperfections of the incoming
analog signal. Those values
are set either in the range of
0 to 255 or from 0 to 128 (for
hue).
Although it may look dif-
ficult at the very beginning,
changing the numerical
values is in fact quite simpleand fast. Left/right arrows
are used o change the digit,
while up/down to increase/
decrease the digit. However,
if the input signal is good and
does not require corrections,
the best idea is to leave the
factory defaults.
The further submenus in
the channel settings are more
digital in nature. These
are: picture resolution, audio
sampling rate, audio output
bitrate. The available video
resolutions are: 720x576,
704x576, 640x576, 544x576,
480x576, 384x576, 352x576
for PAL and 720x480, 704x480,
640x480, 544x480, 480x480,
384x480, 352x480 for NTSC.
Audio sampling rates can be
set to: 32 kHz, 44.1 kHz or 48
kHz and audio output rates:
128, 256 or 384 kbps.
Audio options are the next
menu item. Here you can
set it to stereo, joint stereo,
dual or mono. The last menu
items in the channel settings
are the channel output bitrate
(video+audio together) with
the setting range from 1
Mbps to 15 Mbps and PID
settings. PID settings allow
you to set the PID values for
video, audio, PCR and PMT of
a channel.
When you are finished with
the channel settings, you
8/14/2019 1003 Encoder
4/4
DATA
TECHNICAL
Manufacturer SICHUAN JIUZHOU ELECTRONIC TECHNOLOGY CO., Ltd.
No. 16, Yuejin Road, Mianyang, Sichuan Province, China
Web www.jiuzhoutech.com/
Phone +86-816-2469 300
Fax +86-816-2469 411
Model DVE-4Q
Function 4-Channel MPEG-2 Encoder
Video input (CVBS) Level 1.0Vp-p, 75ohm, BNC connector
Audio input Level 2.0Vp-p, 600ohm, BNC connector
Output standard ASI
Output level 800mV10%
Output bitrate 1~100Mbps tunable ( each channel 1~15Mbps tunable)
Video coding Complying to ISO11172 and ISO13818 (MPEG-2), 4:2: 0 MP@ML
Audio coding MPEG-1 Lay II, CD audio quality
Dimensions 44mmx480mmx320mm
Temperature 0~+50C (Operating), -20~+70C(Storage)
Power supply 220VAC10%, 50~60Hz, 30W
Jacek PawlowskiTELE-satellite
Test CenterPoland
TELE-satellite World www.TELE-satellite.com/...
Arabic www.TELE-satellite.com/TELE-satellite-1003/ara /encoder.pdfIndonesian Indonesia www.TELE-satellite.com/TELE-satellite-1003/bid /encoder.pdfBulgarian www.TELE-satellite.com/TELE-satellite-1003/bul /encoder.pdfCzech esky www.TELE-satellite.com/TELE-satellite-1003/ces /encoder.pdfGerman Deutsch www.TELE-satellite.com/TELE-satellite-1003/deu /encoder.pdfEnglish English www.TELE-satellite.com/TELE-satellite-1003/eng /encoder.pdfSpanish Espaol www.TELE-satellite.com/TELE-satellite-1003/esp /encoder.pdfFarsi www.TELE-satellite.com/TELE-satellite-1003/far/encoder.pdfFrench Franais www.TELE-satellite.com/TELE-satellite-1003/fra /encoder.pdf
Hebrew www.TELE-satellite.com/TELE-satellite-1003/heb /encoder.pdfGreek www.TELE-satellite.com/TELE-satellite-1003/hel /encoder.pdfCroatian Hrvatski www.TELE-satellite.com/TELE-satellite-1003/hrv /encoder.pdfItalian Italiano www.TELE-satellite.com/TELE-satellite-1003/ita /encoder.pdfHungarian Magyar www.TELE-satellite.com/TELE-satellite-1003/mag /encoder.pdfMandarin www.TELE-satellite.com/TELE-satellite-1003/man /encoder.pdfDutch Nederlands www.TELE-satellite.com/TELE-satellite-1003/ned /encoder.pdfPolish Polski www.TELE-satellite.com/TELE-satellite-1003/pol /encoder.pdfPortuguese Portugus www.TELE-satellite.com/TELE-satellite-1003/por/encoder.pdfRomanian Romnesc www.TELE-satellite.com/TELE-satellite-1003/rom /encoder.pdfRussian www.TELE-satellite.com/TELE-satellite-1003/rus /encoder.pdfSwedish Svenska www.TELE-satellite.com/TELE-satellite-1003/sve /encoder.pdfTurkish Trke www.TELE-satellite.com/TELE-satellite-1003/tur/encoder.pdf
Available online starting from29 January 2010
Download this report in other languages from the Internet:
44 TELE-satellite Global Digital TV Magazine 02-03/2010 www.TELE-satellite.com
+DVE-4Q is simple, very flexible and good quality
MPEG-2 encoder which can be successfully used
in digital tv head ends - especially local cable or
terrestrial networks. It is suitable for both PAL and
NTSC standard definition signals. Every resolution,
sampling rate or audio output bitrate specified in
DVB standard are supported and the channel and
multiplex bitrates can be set freely.
-Transport streams used for satellite transmissions usually needto have more options set that DVE-4Q can do, for example: channel
name or event name. So if this encoder is to be used in a full fea-
tured satellite headend, its output would have to be still processed
digitally before being fed to the QPSK modulator.
Expert Opinion
Only in the headend station right at the output of a good modulator,one can see such perfect signal-to-noise performance
The constellation diagram reveals that the signal is very clean
(noiseless)
can move on to the multiplex
settings. They are not that
extended as the channel set-
tings. In this menu, you can
select which channels are
to be included in the multi-
plex (transport stream). The
next setting of the multiplex
is the total output bitrate of
the transport stream. Its set-
ting range is from 1 Mbps
to 54Mbps. Of course, you
should set the total bitrate
larger than the sum of the
channel bitrates.
The following menu item
allows you to choose if the
SDT table is included in the
stream or not and the lastitem in the multiplex setting
is the transport stream ID
number.
The next menu system
settings is used to set local
area network parameters: IP
address, submask and gate-
way. The last item in this
menu is the reset to factory
defaults.
Finally the last menu Warn-
ing Information is used only
if the red status LED lights up.
In this way we can check what
the reason of an error was.
PerformanceTo check the performance
of the DVE-4Q encoder, we
connected it to a DVB-T mod-
ulator. As the input, we used
DVD player and the outputs
of satellite receivers. The
encoder started to operate
without any problem.
With the default settings
the quality of output signal
was extraordinary good what
you can see in the attached
pictures. CBER better than
1x10-5 is something you can
not see too often. The encoder
created signal in various res-
olutions in accordance to our
setting.
Except for video resolu-
tion, also the channel bitrate
has enormous impact of thepicture quality we see on the
tv-set. When we decreased it
below about 1.5 Mbps heavy
picture distortion were visible
especially during the change
of a scene. Normally, the
lower the bitrate the cheaper
the transmission is. However
you should not decrease it
too much because the view-
ers will notice the distortions.
Having an encoder as flexible
as DVE-4Q, one can easily set
the proper settings for him-
self.
During the whole test, DVE-
4Q worked flawlessly. It cre-
ated transport stream with
very good quality digital video
and audio unless our settings
were deliberately low.