8
Software guidelines
1. From the “ComPort” combo box choose the correct USB port that connects the MHD101 and press “Connect”.
2. Once the software has successfully connected with the device, it will automatically download all the settings of the
MHD101.
3. The TERRA GUI consists of four sub-categories as described below:
● DVB-T Settings – Parameters regarding the modulator part
● Encoder Settings – Parameters regarding the H.264 encoder
● Multiplexer Settings – Parameters regarding the multiplex part
● System Settings – Parameters regarding system information
1. DVB-T Settings
In this category the user is able to adjust several parameters of the modulator RF output part, as described below:
1.1 Channel
- Output channel selection (VHF:5-12 & UHF:21-69)
1.2
Bandwidth
- Bandwidth selection
1.3 Constellation
- Constellation selection
1.4 Modulation
- Modulation selection
1.5
Guard Interval
- Guard Interval selection
1.6
Code rate
- Code rate selection
2. Encoder settings
In this category the user is able to adjust parameters of the H.264 encoder, as described below:
2.1
Input source
- Select the primary input source
2.2
Video BR (Mpbs)
- Set the video bitrate
2.3
Audio BR (Kbps)
- Set the audio bitrate
2.4
Audio Encoding
– Select the audio encoding
2.5
HDCP ON/OFF
– Enables/disables HDCP
3. Multiplexer settings
In this category the user is able to adjust parameters of the MHD101 multiplexer, as described below:
3.1
Network Name
+ ID - Enter the Network name + ID*
3.2
Program Name
+ ID - Enter the Program name + ID
3.3
Provider Name
- Enter the Provider name
3.4
Original Net ID
- Set the Net ID (0-65535)*
3.5
TS ID
- Set the Transport Stream ID (0-65535)*
3.6
PMT PID
- Set the PID value
3.7
Video PID
- Set the Video PID value
3.8
Audio PID
- Set the Audio PID value
3.9
LCN No
- Set the LCN No (1-999) (must be enabled first)
3.10 LCN Provider
- Set the LCN provider
Caution!!!
● Modulation settings must be applied with care and in order to have adequate output bitrate. The output bitrate (which
can be calculated from the tables in Appendix B) must be equal or greater than the total sum of the bitrate of the encoders.
Example
: Assuming we select the following modulation settings:
Modulation:
8K
Constellation:
16-QAM
Code Rate:
5/6
Guard Interval:
1/32
Bandwidth:
8 MHz
We have an output bitrate of
20.107 Mbps
according to Appendix B.
This means that encoder’s bitrate must be adjusted in such a way that the total bitrate of the encoder does not exceed
the 20.107 Mbps limit, otherwise artifacts may occur.
For example
, one valid selection in case of four encoders would be to set each encoder bitrate to 5 Mbps since:
4 x 5 Μbps = 20 Mbps < 20.107 Mbps
* TS ID must always be different between DVB-T modulators in the same network.
