User Manual
Home Modulator HDMI to DVBT/C
HD/SD Encoder & Modulator HDMI/YPbPr/S-Video/AV to DVB-T Digital RF - Home Use
User Manual
Thank you for buying this encoder modulator.
Please read this manual carefully to install, use and maintain the encoder modulator in the best
conditions of performance. Keep this manual for future reference.
HD/SD Encoder & Modulator HDMI/YPbPr/S-Video/AV to DVB-T Digital RF
CHAPTER 1 Product Introductions
General Description 3
System Connection Chart
Technical Specifications
CHAPTER 2 Safety Instruction and Installations
Safety Instructions
CHAPTER 3 Operations and Management
Home Use
CHAPTER 1 Product Introductions
General Description
It is an all-in-one device integrating MPEG4 AVC/H.264 encoding and DVB-T
modulating to convert input signals to DVB-T RF out in the frequency range of
The signals source could be from satellite receivers, closed-circuit television
cameras, Blue-ray players, and antenna etc. its output signal is to be received by
DVB-T standard TVs or DVB-T STBs etc.
HD/SD Encoder & Modulator HDMI/YPbPr/S-Video/AV to DVB-T Digital RF
Grounding: to connect the earth cable
DC 12V: power input
HDMI: HDMI stream input supporting HD signals
YPbPr/S-Video/AV: YPbPr/S-Video/AV signal input through a VGA adapter cable
RF in: RF Loop-through input (10 dB attenuation)
RF out: RF output to distribute modulated signal (30-960 MHz, 71~91 dbµV)
System Connection Chart
Home Use
Technical Specifications
System Connection Chart
Technical Specifications
Encoding Section
MPEG-4 AVC/H.264
1920*1080_60i, 1920*1080_50i;
1280*720_60p, 1280*720_50P
Bit rate
0.500~19.500 Mbps
MPEG1 Layer II, (MPEG2-AAC, MPEG4-AAC available)
Sample rate
Bit rate
64, 96,128, 192, 256, 320, 384kbps
HD/SD Encoder & Modulator HDMI/YPbPr/S-Video/AV to DVB-T Digital RF
MPEG-4 AVC/H.264
CVBS *1, YPbPr*1, S-Video*1
CVBS & S-Video: 720x576_50i (PAL);
720x480_60i (NTSC)
YPbPr: 1920*1080_60i, 1920*1080_50i;
1280*720_60p, 1280*720_50P
Bit rate
0.500~19.500 Mbps
available )
1*Stereo /mono
Sample rate
Bit rate
64, 96,128, 192, 256, 320, 384kbps
Modulator Section
6M, 7M, 8M
Code rate
1/2, 2/3, 3/4, 5/6, 7/8.
Code rate
1/2, 2/3, 3/4, 5/6, 7/8.
Home Use
Guard Interval
1/32, 1/16, 1/8, 1/4.
Transmission Mode:
2K, 8K
RF frequency
30~960 MHz, 1KHz step
RF output level
-16~ -36 dBm (71~91 dbµV), 0.1db step
Local control: LCD + control buttons
LCN Insertion
Power supply
DC 12V
< 1kg
HD/SD Encoder & Modulator HDMI/YPbPr/S-Video/AV to DVB-T Digital RF
CHAPTER 2 Safety Instruction and Installations
Safety Instructions
WARNING: Hot plug is not allowed since it may cause system halted.
To prevent fire or electrical shock, do not expose the device to rain or moisture.
The encoder modulator is powered with a voltage of 12V DC. The power supply
voltage must not exceed the recommended voltage, which otherwise may
cause irreparable damage to the device and the invalidation of the warranty.
• Do not replace power supply with a voltage greater than 12V DC.
• Do not connect the device to the power if the power cord is damaged.
• Do not plug the device into mains supply until all cables have been connected
• Do not cut the cord.
Avoid placing the device next to central heating components and in areas of
high humidity.
Do not cover the device with elements that obstruct the ventilation slots.
If the encoder modulator has been kept in cold conditions for a long time, keep it in
a warm room minimum 2 hours before plugging into the mains.
Mount the device in vertical position with the connectors located on the top side.
When replacement parts are required, be sure the service technician has used
replacement parts specified by the manufacturer or have the same characteristics
as the original part. Unauthorized substitutes may result in fire, electric shock or
other hazards.
Safety check- Upon completion of any service or repairs to this device, ask the
service technician to perform safety checks to determine that the device is in proper
Home Use
RISK OF damage to the unit
Mechanically handling the unit may result in damage. Do not connect the unit to the
power supply before or during assembly. Connect the unit as below instructed.
1. Mount and tighten the screws and plugs to secure the unit to the wall. Left 10 cm
of free space around from each unit.
2. Connect the signal input in the respective connectors. The signal source can be
from a surveillance monitor, DVD, set-top box, CCTV and etc.
3. Optionally, connect the loop-through RF input coaxial cable.
4. Connect cable to RF output to STB/TV.
HD/SD Encoder & Modulator HDMI/YPbPr/S-Video/AV to DVB-T Digital RF
5. Power supply connection: a) Connect the earth cable; b) Connect the power plug
to the unit mains connector; c) Connect the power plug to the mains socket.
Cascade Installation
NDS3552 unit has 1 TV signal to RF output encoded as DVB-T Digital TV signal.
Several NDS3552 units can be cascaded in order to increase the capacity. The maximum capacity of a series of N units is 1xN incorporated TV signals. To cascade 2 or
more units, connect the RF output of the preceding unit to the TV input (loop-through)
of the next unit (see right illustration).
Home Use
CHAPTER 3 Operations and Management
NDS3552 is controlled and managed through the key board and LCD display.
LCD Display – It presents the selected menu and the parameter settings. The
backlight in the display is on when the power is applied.
LED – These lights indicate the working status
• Power: It lights on when the power supply is connected.
• Alarm: It lights on when the there is error, such as the signal source loss.
• Lock: It lights on when the signal source connected and goes off when the signal
Left/Right/Up/Down buttons – Use these buttons to turn the screen pages, shift
the target items by moving the triangle, or change the parameter settings in the
program mode.
HD/SD Encoder & Modulator HDMI/YPbPr/S-Video/AV to DVB-T Digital RF
Enter – Use this button to enter a submenu or save a new setting after adjustment;
press it to start adjusting the value of certain items when the corresponding underline
flash with Up and Down buttons;
Press it to activate the hidden selections and change the setting with Up and Down
(or Left and Right) buttons.
Menu – Press this button to step back
Lock – Locking the screen / cancelling the lock state, and entering the main menu
after the initialization of the device. After pressing lock key, the system will question
the users to save present setting or not. If not, the LCD will display the current
configuration state.
When the power is connected, the LCD will start to initialize the program. The LCD
menu goes as below chart.
Home Use
1) DVB-T: modulating standard; XX.XXX MHz: the current output frequency; 576i:
video resolution of signal source; X.XX Mbps: the current encoding bit rate
2) Alarm Status: For example, if the CVBS cable disconnected, it will display Video 1
Not Lock under this menu.
3) Uptime: It displays the working time duration of the device. It times upon power on.
4) Video Parameters: User can enter the items respectively to view the video status
and signal source resolution, and set the input interface. User can also adjust
values of rest items (Bit rate: 0.500~19.500 Mbps; Brightness & Contrast &
Saturation: 0-255; Hue: -128 - +127)
5) Audio Bit rate: Select audio bit rate among 64, 96, 128, 192, 256, 320, 384 kbps.
Audio Format: Select audio format among MPEG2, LC-AAC and HE-AAC.
6) Program Information: User can enable or disable the program output under menu
Program Output. User can also enter the other items to edit the Service Name,
Program Name, Program Number, and PIDs of PMT, PCR, Video and Audio, and
edit LCN (Logical channel number). EIT Event – User can enter this menu to setup
EIT (Event Information Table) for the current and next program event. The EIT
contains Start Year, Start Time, Duration, and Event Name of the event. All the EIT
information can be displayed on the TV screen on condition that the EIT is chosen
to insert (see explanation 10.).
7) TSID: (Transport Stream ID) User can view or adjust after enter this menu.
8) ONID: (Original Network ID)-User can view or adjust after enter this menu.
9) NIT: (Network Information Table) NIT table is a very important table for describing
the network and TS. User can enter the submenus displayed and edit the values
or select the LCN (Logical channel number) mode, and choose whether to insert
the NIT. If user chooses to insert the NIT, information (Network ID, Network Name,
LCN Mode, Private Data and LCN number of the program mentioned in explanation
6) will be added to the transport stream.
NOTE: when the Private Data is set as 0*0, it is invalid.
10) EIT: EIT Insert - As mentioned above (6), the event information table can be chosen
whether to insert into the TS or not under this menu. If yes, the EIT information
set above (6) will be displayed on the TV screen. Language Code – to set the EIT
HD/SD Encoder & Modulator HDMI/YPbPr/S-Video/AV to DVB-T Digital RF
language For example, code of the English language is eng. If you set the code as
eng, the EIT displayed will be in English language.
11) Bandwidth: choose between 6M, 7M and 8M.
12) Constellation: DVB-T modulator contains 3 constellation modes – 64 QAM, QPSK
and 16 QAM.
13) FFT (Transmission Mode): Select between 2K and 8K.
14) Guard Interval: Select among 1/32, 1/16, 1/8 and 1/4.
15) Code Rate: It refers to FEC-Forward Error Correction rate. It contains 1/2, 2/3,
3/4, 5/6 and 7/8.
NOTE: The different combination of bandwidth, constellation, guard interval and code rate (FEC)
will form a different output code rate. Please refer to appendix table 2.
16) RF Frequency: Adjust it at range of 30 to 999 MHz. Set it according your regional
situation or inquire your local services.
17) RF Level: Adjust it at range of -16~ -36dBm.
18) RF On: User can choose to turn on or turn off the RF under this menu.
19) Bit Rate: User can read the current modulating bit rate and the maximum bit rate
20) Save Config: Yes/No-to save/give up the adjustment of setting.
21) Load Saved CFG: Yes/No-to load/ not to load the saved configuration.
22) Reset all sets: Yes/No-choose/not choose the factory’s default configuration.
23) LCD Time out: A time limit that LCD will light off. Choose among 5s, 10s, 45s,
60s, 90s and 120s (seconds).
24) Lock Keyboard: Choose Yes to set a password and lock the keyboard, then
the keyboard will be locked and cannot be applicable. It is required to input the
password to unlock the key board. This operation is one-off. (If forgetting your
password, please use the universal code “005599”.)
25) Serial Number: User can view the serial number of this device. It is read-only and
26) Version: It displays the version information of this device. Encoder Modulator: the
name of the device; SW: software version number; HW: hardware version number.
User can also press ENTER again to view the published time of this device.
Home Use
Table 1 Australia Television Frequency/Channels (MHz)
HD/SD Encoder & Modulator HDMI/YPbPr/S-Video/AV to DVB-T Digital RF
Table 2 Recommended MPEG-2 Code Rate
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