QPSK/8PSK(DVB-S/S2) to COFDM (DVB-T) transmodulator with CA module slot tdx311c
1. Product description
The tdx311c is DVB-S/S2 receiver with DVB-T modulator, CA module slot and transport stream remultiplexer. It is intended
to receive DVB-S/S2 signal from satellite, descramble requested services by inserted CA module and card, lter services or
modify parameters of transport stream, and convert it into DVB-T.
Transmodulator is intended to use in the MMH3000 headend.
tdx311c is designed in accordance with standard EN50083-5 class 2.
The unit is intended for indoor usage only.
RoHS compliant.
2. Safety instructions
Any repairs must be performed by a qualied personnel.
Module shall not be exposed to dripping or splashing water and no objects lled with liquids, such as vases, shall be
placed on it.
Avoid placing module next to central heating components and in areas of high humidity.
No naked ame sources, such as lighted candles, should be placed on module.
If the module has been kept in cold conditions for a long time, keep it in a warm room no less than 2 hours before plugging
into the mains.
The ventilation should not be impeded by covering with items, such as newspapers, table-cloths, curtains.
This product complies with the relevant clauses of the European Directive 2002/96/EC. The unit must be recycled
or discarded according to applicable local and national regulations.
3. Electrostatic discharge caution
Caution: The module contain electrostatic sensitive components. To minimize electrostatic discharge, observe the
following precautions:
- Do not remove module from their antistatic plastic bag until you are ready to install it into the basic unit.
- Hold the module only by the front panel of module.
- Do not place the module on an unprotected surface. Immediately after you remove a module from the
basic unit, you must insert it into its antistatic plastic bag.
- When the module is not in use, keep it in their antistatic plastic bag.
- Do not ship or store module near strong electrostatic, electromagnetic or radioactive elds.
4. External view
[1] - indicator of addressing
[2] - indicator of module's status
[3] - MPEG2 TS output connector
[4] - RF input of DVB-S/S2 signal, DC output for LNB powering
[5] - RF loop through output
[6] - xing screws
Figure 1. External view of module
5. Installation instructions
Read the instruction rst.
Disconnect base unit from the mains before insertion/changing the module.
Before pushing the module into the direction of bus bar, carefully put the edges of module PCB into grooved guides,
stamped in the base unit. Fasten the module by supplied xing screws.
Place serrated lock washer with external teeth on module and nut on adapters as described in the user manuals of base
units UC360, UC380.
After 7-10 seconds of powering the module will run in normal operation mode.
It's recommended to use QUATRO LNB.
Mini modular headend MMH3000
www.terraelectronics.com
OFDM Params => Out. Frequency
Allows to setup output frequency of modulator.
OFDM Params => RF Offset
Allows to setup RF offset of modulator. ±166 kHz for 8 MHz bandwidth, and ±125 kHz for 7 MHz channel.
OFDM Params => Attenuator
Allows to setup RF attenuation in a range of 0..15.5 dB.
Network Params => Stream ID
Stream ID value. Requires to execute "Save & Run" command from "Input Stream" menu.
Network Params => Network ID
Network ID value. Requires to execute "Save & Run" command from "Input Stream" menu.
System Status => List of Errors
Shows all errors of the systems. Use "Up" and "Down" buttons to review all of them.
System status => Input status
Shows input bitrate and C/N. It also shows RF level if tuner is unlocked.
System status => Output status
Shows output bitrate and the usage of available bandwidth.
System Info => Product
Shows the name of the device.
System Info => Serial Number
Shows serial number of the device.
System Info => Soft. Version
Shows software version of the device.
System Info => System time
Shows system time of the device. NOTE: timing zone and date/time source must be setup correctly. These settings
available only with PC control software.
System Info => Temperature
Shows internal temperature °C of the device.
RF output parameters
Modulation DVB-T QPSK, QAM16, QAM64
Bandwidth 7 MHz, 8 MHz
Guard interval 1/4, 1/8, 1/16, 1/32
Code rate 1/2, 2/3, 3/4, 5/6, 7/8
Mode 2k
RF output frequency 110...860 MHz by 0.5 MHz step
RF offset (7 MHz) -125 kHz, 0, +125 kHz
RF offset (8 MHz) -166 kHz, 0, +166 kHz
Attenuation 0...15.5 dB by 0.5 dB step
Nominal output level 90 dBμV ±1.5 dB
Carrier stability ± 500 Hz
MER ≥ 35.0 dB
Output impedance 75 Ω
RF input parameters
Modulation DVB-S/S2 QPSK, 8PSK
Input frequency 950 ... 2150 MHz
Input level -65 dBm ... -25 dBm
Input impedance 75 Ω
Loop through gain -5 ... +5 dB
Max. symbol rate 45000 kSymb/s
Multiplexing parameters
Input bit rate ≤ 80 MBit/s
Output bit rate 31.5 MBit/s (modulator bandwidth limited)
Input services ≤ 256
PID lter ≤ 256
Version
monitoring
PMT Yes
PAT No
SDT No
PCR restamping Yes
EPG (EIT) multiplexing Yes
Other parameters
Supply voltage 5.5 ± 0.1 V
Current consumption 2 A
Supply voltage for LNB 18 ± 1 V
Current for LNB, max. 400 mA
Operating temperature range see UC360, UC380 manuals technical characteristics
Dimensions /Weight 47.5 x 117 x 220.5 mm / 0.7 kg
9. Technical specications
