Terra MMH3000 Manual

8. Technical specifications
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
Output level, typical 90 dBμV ±1.5 dB
Carrier stability ± 500 Hz
MER ≥ 35.0 dB
Output impedance 75 Ω
RF input parameters
DVB-T modulation QPSK, QAM16, QAM64
DVB-T2 modulation QPSK, QAM16, QAM64, QAM256
Input frequency 104 ... 862 MHz
Input level 40 ... 100 dBμV
Input impedance 75 Ω
Loop through gain 0 ... +3.5 dB
Signal/Noise ≥ 23 dB
Multiplexing parameters (multiplexed mode only)
Input bit rate ≤ 31.5 MBit/s
Output bit rate ≤ 31.5 MBit/s (modulator bandwidth limited)
Input services ≤ 256
PID filter ≤ 256
PMT Yes
Version
PAT No
monitoring
SDT No
PCR restamping Yes
EPG (EIT) multiplexing Yes
Other parameters
Supply voltage 5.5 ± 0.1 V
Current consumption
1.3 A
Supply voltage for preamplifier
12 V
Operating temperature range see UC360, UC380 manuals technical characteristics
Dimensions /Weight 47.5 x 117 x 220.5 mm / 0.7 kg
Caution.
Electrostatic discharge 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 fields.
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.
Equipment intended for indoor usage only.
TERRA confirms, that this product is in accordance to following norms of EU: EMC norm EN50083-2, safety norm
EN60065 and RoHS norm EN50581.
TERRA confirms, that this product is in accordance with Custom Union Technical Regulations: "Electromagnetic
compatibility of technical equipment" CU TR 020/2011, "On safety of low-voltage equipment" CU TR 004/2011.
Draugystes str. 22, LT-51256 Kaunas, Lithuania, tel.: +370 37 - 31 34 44, fax: +370 37 - 31 35 55
E-mail: sales@terraelectronics.com, http://www.terraelectronics.com
,
0.1 A max.
Mini modular headend MMH3000
DVB-T/T2 to DVB-T transmodulator ttx312
1. Product description
The ttx312 is DVB-T/T2 receiver with DVB-T modulator and transport stream remultiplexer with transparent modulator
option. It is intended to receive DVB-T/T2 signal, restore lost data (if still technically possible) and modulate the signal again
into DVB-T RF channel. It can also be used in multiplexed mode (filter services or modify parameters of transport stream).
Transmodulator is intended to use in the MMH3000 headend.
ttx312 is designed in accordance with standard EN60728-5 grade 2.
The unit is intended for indoor usage only.
2. Safety instructions
Any repairs must be performed by a qualified personnel.
Module shall not be exposed to dripping or splashing water and no objects filled 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 flame 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.
3. External view
5 4
3
MPEG2 TS
TERRA ®
DVB-T/T2
DVB-T
transmodulator
ttx312
6
MMH
series
headend
1
ADDRESSED
STATUS
2
Figure 1. External view of the module
4. Installation instructions
Read the instruction first.
Disconnect base unit from the mains before insertion/changing the module. How to insert module into the base unit, see
user manuals of base units UC360, UC380, chapter ''INSERTION/CHANGING OF THE MODULE''.
RF input signal can be connected directly to [4] connector, or via loop through outputs of other modules.
Any other module's DVB-T RF input (or analog TV RF input) can be connected to ttx312 loop through output [5].
Comments of the front panel indicators:
[1] ADDRESSED indicator. Indicator lights green when the module is addressed on Terra Bus bus. Blinking indicator
indicates addressing error.
[2] STATUS indicator. In case of any error indicator lights red. It will start blinking at power on to indicate a starting up status.
The module is ready when indicator blinking stops.
[1]
- ADDRESSED - indicator of addressing
[2]
- STATUS - indicator of module's status
[3]
- MPEG2 TS - TS output connector
[4]
- RF input of DVB-T signal, preamplifier powering
[5]
- RF loop through output
[6]
- fixing screws