Questtel DVB C User manual

B-QAM-SDI-IP-2CH-LL
User Manual

Directory
CHAPTER 1 INTRODUCTION ...................................................................................................................1
1.1 PRODUCT OVERVIEW............................................................................................................................... 1
1.2 KEY FEATURES ........................................................................................................................................1
1.3 SPECIFICATIONS.......................................................................................................................................2
1.4 PRINCIPLE CHART.................................................................................................................................... 3
1.5APPEARANCE AND DESCRIPTION .............................................................................................................3
CHAPTER 2 INSTALLATION GUIDE ...........................................................................................................5
2.1 GENERAL PRECAUTIONS.......................................................................................................................... 5
2.2 POWER PRECAUTIONS.............................................................................................................................. 5
2.3 DEVICE‟S INSTALLATION FLOW CHART ILLUSTRATED AS FOLLOWING..................................................... 5
2.4 ENVIRONMENT REQUIREMENT ................................................................................................................5
2.5 GROUNDING REQUIREMENT ....................................................................................................................6
CHAPTER 3 OPERATION..........................................................................................................................7
3.1 LCD MENUS............................................................................................................................................7
3.2 INITIAL STATUS........................................................................................................................................ 8
3.3 GENERAL SETTINGS FOR MAIN MENU..................................................................................................... 9
CHAPTER 4 WEB NMS OPERATION .......................................................................................................17
4.1 LOGIN .................................................................................................................................................... 17
4.2 OPERATION............................................................................................................................................ 18
CHAPTER 5 TROUBLESHOOTING...........................................................................................................29
CHAPTER 6 APPLICATION .....................................................................................................................30
CHAPTER 7 PACKING LIST .....................................................................................................................32
SDI Encoder Modulator User Manual
B-QAM-SDI-IP-2CH-LL
SDI Encoder Modulator User Manual
B-QAM-SDI-IP-2CH-LL
www.questtel.com [email protected]

Chapter 1 Introduction
1.1 Product Overview
B-QAM-SDI-IP-2CH-LL series products are QuestTel‟s new breakthrough all-in-
one devices which integrate encoding (MPEG-2 HD/SD, MPEG-4/AVC H.264 HD/
SD) and modulating to convert V/A signals into DVB-C RF output. It has equipped
with 2 SDI channels input and 1 ASI input and output with 2 ASI ports and 1 UDP IP
port.
Now, the latency problem has been greatly reduced to achieve an extremely low value
from the encoding progress to the decoding terminals.
It adopts inner drawer-type structural design which greatly facilitates the change of
encoding modules (HDMI/SDI /…) as needed.
The signals source could be from satellite receivers, closed-circuit television
cameras, Blue-ray players, and antenna etc. Its output signals are to be received by
DVB-C TVs or STBs and etc.
1.2 Key Features
MPEG2 & MPEG4AVC/H.264 HD/SD encoding
Up to 1920*1080@50P/60Psupported (MPEG4AVC/H.264 HD)
Up to 1920*1080@50I/60I supported (MPEG2 HD)
2* SDI input; 1*ASI input for re-mux; 1*RF input for mix
2* DVB-C RF out (2 carriers combined output)
Support 2* SPTS output
Extremely low latency reachable
LCN support (Logical Channel Number)
Excellent modulation quality MER≥42dB
RF Frequency range 30Mhz~960Mhz
LCD display, Remote control and firmware
Web NMS management; Updates via web
Lowest cost per channel
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1.3 Specifications
Encoding Section
Video
Encoding
MPEG2; MPEG4 AVC/H.264
Input
SDI*2
Resolution
1920*1080_60P, 1920*1080_50P, (-for MPEG4 AVC/H.264)
1920*1080_60i, 1920*1080_50i,
1280*720_60p, 1280*720_50P
720*480_60i, 720*576_50i
Low Latency Mode
Normal, Mode 1, Mode 2
Audio
encoding
MPEG1 Layer II, MPEG2-AAC, MPEG4-AAC
Sample rate
48KHz
Bit rate
64kbps, 96kbps,128kbps, 192kbps, 256kbps, 320kbps
DVB-C Modulator Section
Standard
J.83A , J.83B, J.83C
MER
≥42dB
RF frequency
30~960MHz, 1KHz step
Symbol rate
5.000~9.000Msps adjustable
RF output level
-30~ -10dbm (81~97 dbµV), 0.1db step
J.83A
J.83B
J.83C
Constellation
16/32/64/128/25
6QAM
64QAM/ 256QAM
64QAM/ 256QAM
bandwidth
8M
6M
6M
System
Local interface
LCD + control buttons
Remote management
Web NMS
output
2*ASI out (BNC type);
2*SPTS IP out over UDP (RJ45, 100M)
NMS interface
RJ45, 100M
Language
English
General
Power supply
AC 100V~240V
Consumption
25 W
Dimensions
482*300*44mm
Weight
3.5 kgs
Operation temperature
0~45℃
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1.4 Principle Chart
1.5 Appearance and Description
Front Panel Illustration
①LCD window: LCD display
②NMS port for web management
③DATA port for IP signal output
④Indicators
⑤Navigation buttons
⑥Enter button: for confirm
⑦Menu button: for back step
⑧Lock button: press to lock set
Rear Panel Illustration
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①SDI input port 1
②SDI input port 2
③RF in port (for RF mix)
④RF out port
⑤ASI input port
⑥ASI output ports
⑦Power Switch
⑧Power supply slot
⑨Grounding
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Chapter 2 Installation Guide
This section is to explain the cautions the users must know in some case that possible
injure may bring to users when it‟s used or installed. For this reason, please read all
details here and make in mind before installing or using the product.
2.1 General Precautions
Must be operated and maintained free of dust or dirty.
The cover should be securely fastened, do not open the cover of the products when the
power is on.
After use, securely stow away all loose cables, external antenna, and others.
2.2 Power precautions
When you connect the power source, make sure if it may cause overload.
Avoid operating on a wet floor in the open. Make sure the extension cable is in good
condition
Make sure the power switch is off before you start to install the device
2.3 Device’s Installation Flow Chart Illustrated as following
Connecting
Grouding
Wire and
Power
Cord
Acquisition
Check Installing Device Setting Parameter Running Device
Connecting
Signal
cable
2.4 Environment Requirement
Item
Requirement
Machine Hall
When user installs machine frame array in one machine hall,
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Space
the distance between 2 rows of machine frames should be
1.2~1.5m and the distance against wall should be no less than
0.8m.
Machine Hall Floor
Electric Isolation, Dust Free
Volume resistivity of ground anti-static material:
1X107~1X1010，Grounding current limiting resistance: 1M
(Floor bearing should be greater than 450Kg/㎡)
Environment
Temperature
5~40℃(sustainable )，0~45℃(short time)，
installing air-conditioning is recommended
Relative Humidity
20%~80% sustainable 10%~90% short time
Pressure
86~105KPa
Door & Window
Installing rubber strip for sealing door-gaps and dual level
glasses for window
Wall
It can be covered with wallpaper, or brightness less paint.
Fire Protection
Fire alarm system and extinguisher
Power
Requiring device power, air-conditioning power and lighting
power are independent to each other. Device power requires
AC 110V±10%, 50/60Hz or AC 220V±10%, 50/60Hz. Please
carefully check before running.
2.5 Grounding Requirement
All function modules‟ good grounding is the basis of reliability and stability of devices.
Also, they are the most important guarantee of lightning arresting and interference
rejection. Therefore, the system must follow this rule.
Grounding conductor must adopt copper conductor in order to reduce high frequency
impedance, and the grounding wire must be as thick and short as possible.
Users should make sure the 2 ends of grounding wire well electric conducted and be
antirust.
It is prohibited to use any other device as part of grounding electric circuit
The area of the conduction between grounding wire and device‟s frame should be no
less than 25 mm2.
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Chapter 3 Operation
3.1 LCD Menus
An overview of the LCD menus:
Switch On
Initializing
General Working Status
1 Alarm Status
2 Encode Setting
2.1 Input 1
2.3 ASI
2.2 Input 2
Video Format
Video Bitrate
Audio Format
Audio Bitrate
Video Format
Video Bitrate
Audio Format
Audio Bitrate
2.3.1 Parse Program
2.3.2 Select Program A
2.3.3 Select Program B
2.3.4 Select Program C
2.3.5 Select Program D
Low Latency
Low Latency
3 Modulate Setting
3.1 Output A
3.5 ASI Output
3.2 Output B
3.3 Output C
3.4 Output D
3.1.1 Standard
3.1.2 Constellation
3.1.3 Symbol Rate
3.1.4 RF Frequency
3.1.5 RF Out Level
3.1.6 RF On
3.2.1-3.2.6
(Same content
with 3.1.1-3.1.6)
3.3.1-3.3.6
3.4.1-3.4.6
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4 IP Out Setting
4.1 IP Output A
4.2 IP Output B
4.3 IP Output C
4.4 IP Output D
4.1.1 IP Out Enable
4.1.2 Service IP
4.1.3 Output IP
4.1.4 Subnet Mask
4.1.5 Gateway
4.1.6 Port
4.2.1-4.2.7
(Same content
with 4.1.1-4.1.7)
4.3.1-4.3.7
4.4.1-4.4.7
4.1.7 Filter Null Pkt
3.2 Initial Status
Switch on the device and after a few seconds‟ initialization, it presents start-up pictures as
below:
Start up…
Start OK…
Cable A XXX.00MHz
X.XXMbps X.XXMbps
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Cable: indicate the modulation standard of this device is DVB-C.
A: the symbol of different carrier output. “A”, “B”, “C”, and “D”alternate
constantly with the following output frequency.
XXX.XX MHz indicates the current output frequency (range: 30~960MHz) of its
corresponding carrier output.
X.XX Mbps: indicate the encoding bit rate of the 2 SDI programs respectively.
3.3 General Settings for Main Menu
Press “Lock”key on the front panel to enter the main menu. The LCD will display the
following pages where user can configure the parameters for the device:
User can press UP/DOWN buttons to specify menu item, and then press ENTER to
enter the submenus as below:
1) Alarm Status
The alarm indicator will turn on if there is no A/V signals inputting or outputting bit
rate overflows. User then can enter this menu to check the error type.
2) Encode Setting
Under this submenu, the LCD will show “2.1 Input 1”, “2.2 Input 2”and “2.3 ASI”.
Under submenus 2.1 or 2.2, user could set the video encoding format and bit rate, and
set audio encoding bit rate and also read the audio encoding format of the program from
1 Alarm Status
2 Encode Setting
3 Modulate Setting
4 IP Output Setting
5 Network Setting
6 Saving Config
7 Loading Config
8 Version
2.1 Input 1
2.2 Input 2
2.3 ASI
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the SDI input.
“Video Format”: the encoding module supports both MPEG2 and MPEG4
AVC/H.264 formats. Move the triangle mark with LEFT/RIGHT keys to specify the
intended format and press ENTER to confirm.
“Video Bit Rate”: Move the underline with LEFT/RIGHT keys and modify the
value of frequency with UP/DOWN keys, and press ENTER key to save the
settings.
“Audio Format”: the encoding module supports MPEG2, MPEG2-AAC and
MPEG4-AAC audio formats. Move the triangle mark with UP/DOWN keys to
specify the intended format and press ENTER to confirm.
“Audio Bit Rate”is to select audio encoding bit rate from the options provided.
“Low Latency”: to select a latency mode for the content. Move the triangle mark to
specify a mode and press ENTER to confirm.
Video Bit Rate
08.000 Mbps
Video Format
Video Bit Rate
2.1 Input 1
64 Kbps
96 Kbps
Audio Format
Audio Bit Rate
MPEG2 H.264
Low Latency
Normal
Mode 1
MPEG2
MPEG2 AAC
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…..………………………………..... NOTE ……..……..………………………….
The different combination of Video Format, Video Bit-rate, Low Latency Mode and the
Resolution of signal source will have an impact on the latency. Please refer to the
Appendix attached for detailed information.
…………………………………………………………………………………………..……
Under submenu 2.3, user could parse the inputting programs and select the
programs to output.
“Parse Program” is for checking the quantity of input programs from the
corresponding Tuner input.
“Select Program A” is for selecting programs from the ASI IN to output through
Carrier A. Move the triangle mark to specify the program and press RIGHT/LEFT
keys to shift the mark between “√” and “X”. (“√”: to output the corresponding
program; “X”: not to output the corresponding program)
REMARK:
“Select Program B/C/D”shares the same principle with “Select Program A”. One
program can be output through multi-carriers.
3) Modulator Setting
►1 GXTV √
2 SZTV X
Parse Program
Get 3 programs
Parse Program
Select Program A
2.3 ASI
Select Program B
Select Program C
Select Program D
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When entering “Modulator Setting” submenu, user can find below different
parameters can be set and the LCD window would show as below:
As the B-QAM-SDI-IP-2CH-LL (DVB-C Modulating) is with 4 carrier outputs,
“3.1”-“3.4”represent the “Carrier A”, “Carrier B”, “Carrier B”, and “Carrier D”
respectively. User can enter “3.1”/“3.2”/“3.4”/“3.4”to set the corresponding modulating
parameters. Submenus (taking “3.1”as an example) are as below:
Standard
There are three possible options provided for selecting Standard: J.83A (DVB-C), J.83B,
J.83C when the display shows them, user just need swift LEFT and RIGHT key to choose.
Constellation
Three different constellations: J.83A (DVB-C), J.83B, J.83C will show on the LCD
window when Constellation been entered.
J.83A (DVB-C) contains 16QAM, 32QAM, 64QAM, 128QAM, and 256QAM;
J.83B contains 64QAM, 256QAM;
J.83C contains 64QAM, 256QAM.
3.1 Output A
3.2 Output B
3.3 Output C
3.4 Output D
3.5 ASI Output
3.1 Output A
3.1.1 Standard
3.1.2 Constellation
3.1.5 RF Out Level
3.1.6 RF On
3.1.3 Symbol Rate
3.1.4 RF Frequency
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16QAM: Quadrature Amplitude Modulation is 16
32 QAM: Quadrature Amplitude Modulation is 32
64QAM: Quadrature Amplitude Modulation is 64
128QAM: Quadrature Amplitude Modulation is 128
256QAM: Quadrature Amplitude Modulation is 256
Setting method is just the same. When the display shows them, user just need swift LEFT
and RIGHT key to choose and repressing “ENTER” for confirm.
Symbol Rate
The symbol rate range of both J.83A (DVB-C) & J.83C is 5Msps to 9Msps and J.83B is
fixed and cannot be changed.
RF Frequency
The RF output frequency range is from 30 to 960MHz with 1K stepping. After entering the
RF frequency setting submenu, users the can press LEFT, RIGHT, UP, and DOWN buttons
to adjust the frequency and confirm by press ENTER button.
RF out level
The RF attenuation range is from -30~-10dbm (81~97dbµV) with 0.1db step. After
entering this setting submenu, user can shift UP/DOWN/LEFT/RIGHT key to set the
output level and press ENTER to confirm.
RF On
This interface is to decide whether to enable the RF (carrierA) output or not.
OFF: to disable programs to output through carrierA.
ON: to enable programs to output through carrier A.
RF Frequency
750.000 MHz
RF Out Level
-10.0 dbm
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NOTE: The setting principle of “3.2”, “3.3”, and “3.4”are the same with “3.1”explained above.
ASI Output:
B-QAM-SDI-IP-2CH-LL encoder & modulator (DVB-C Modulating) is with quad-
carrier outputs: Output A, B, C, and D.
Output A: the ASI output programs are same as carrier output A.
Output B: the ASI output programs are same as carrier output B.
Output C: the ASI output programs are same as carrier output C.
Output D: the ASI output programs are same as carrier output D.
4) IPOutput Setting
B-QAM-SDI-IP-2CH-LL encoder & modulator (DVB-C Modulating) is with quad-
carrier output (Output A, B, C, and D),“4.1”to “4.4”are for the settings of the 4 carrier
outputs respectively. Submenus go as 4.1.1-4.1.7
User can enter 4.1.1 to decide whether to turn the IP port on or off, and enter to the
rest menu items to set the corresponding parameters.
4.1.1 IP Output
4.1.2 Service IP
4.1.3 Output IP
4.1.4 Subnet Mask
4.1.5 Gateway
4.1.6 Port
ASI Output
AB C D
4.1 IP Output A
4.2 IP Output B
RF On
Off On
4.3 IP Output C
4.4 IP Output D
4.1.7 Flt Null Pkt
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5) Network setting
After enter Network Setting, there are three submenus shows as the following LCD
displays.
User can press “UP/DOWN”to choose this item and “ENTER” & “LEFT/RIGHT”to
set the parameters.
NOTE: The MAC address is according to the factory setting, and it is unique.
6) Saving Configuration
Users can enter Saving Configuration submenu for saving settings. Choose yes and
5.5 Reset Password
5.6 Web Manage Port
5.3 Gateway
5.4 MAC Address
IP Address
192.168.000.136
Subnet Mask
255.255.255.000
Gateway
192.168.000.001
MAC Address
ffffffffffffffffffffff
Reset Password?
Yes NO
5.1 IP Address
5.2 Subnet Mask
Web Manage Port
00080
Output IP
224.002.002.002
Subnet mask
255.255.255.000
Gateway
192.168.002.000
Port
01234
IP Output
OFF ON
Service IP
192.168.002.137
Filter Null Packet
OFF ON
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press ENTER to confirm.
7) Loading Configuration
At this menu, user can press UP/DWON key to select and repress ENTER to confirm.
User can restore the device into the last saved configuration by choosing “7.1”and
restore the device into factory configuration by choosing “7.2”the display will show
as below:
8) Version
User can check the software version and hardware version of this equipment under
this submenu.
Save Configuration?
Yes
No
Saving Config…
Load Saved CFG?
Yes
No
Loading Config…
7.1 Load Saved CFG
7.2 Load Default
Encoder Modulator
SW 1.00 HW 0.3
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Chapter 4 WEB NMS Operation
User not only can use front buttons to set configuration, but also can control and set
the configuration in computer by connecting the device to web NMS Port. User
should ensure that the computer‟s IP address is different from the B-QAM-SDI-
IP-2CH-LL‟s IP address; otherwise, it would cause IP conflict.
4.1 login
The default IP address of this device is 192.168.0.136. (We can modify the IP
through the front panel.)
Connect the PC (Personal Computer) and the device with net cable, and use ping
command to confirm they are on the same network segment.
I.G. the PC IP address is 192.168.99.252, we then change the device IP to
192.168.99.xxx (xxx can be 0 to 255 except 252 to avoid IP conflict).
Use web browser to connect the device with PC by inputting the Encoder &
Modulator‟s IP address in the browser‟s address bar and press Enter.
It will display the Login interface as Figure-1. Input the Username and Password
(Both the default Username and Password are “admin”.) and then click “LOGIN”to
start the device setting.
Figure-1
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4.2 Operation
When we confirm the login, it displays the WELCOME interface as Figure-2.
Figure-2
Input 1
From the menu on left side of the webpage, clicking “Input 1”, it displays the
information of the program from the 1st SDI encoding slot as Figure-3.
Device standard
and name
User can click any item
here to enter the
corresponding interface
to check information or
set the parameters.
It automatically
identifies and
displays the
signal source
interface and
real-time
encoding bit rate
of corresponding
input channel.
TS indicators—Green
light indicates the TS is
normal, which
otherwise turns to red.
“A”, “B”, “C”and “D”respectively represent
carrier A, carrier B, carrier C, and carrier D.
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