Twister II
DVB-T/T2 DTMB ISDB-T/TB Modulator/Exciter
Twister II is an up-to-date and powerful modulator/exciter supporting DVB-T/T2 (Including T2-Lite), DTMB and ISDB-T/TB Terrestrial TV Standards. It meets TX Manufacturers’ expectation to design performant transmitters as well as broadcasters’ demand to upgrade their existing analog transmitters.
Highlights
DVB-T/T2, DTMB, and ISDB-T/TB Standards
Integrating main Digital Terrestrial TV standards, Twister II designed to be easily and quickly integrated into any TV transmitter is the ideal solution to design transmitters for the world wide market.
Optimized and High Quality Transmitters
Twister II Digital Adaptive Precorrection circuits allows you to run your transmitters very closed to their saturation limit, with unequalled RF signal performances: allowing you significant gain in transmitter Power Efficiency.
Safe Power Amplifier Driving
Twister II includes specific probes with advance features like AGC to drive power amplifier and ensure a perfect stability of the transmitter output power and fast power amplifier protection mechanisms to improve your reliability.
1+1 and N+1 Redundancy Management
Twister II can manage 1+1 and N+1 redundancy configuration with up to 8 embedded profiles. Switching can be done manually, with IP protocol or using GPI for a quicker process.
Applications
- Transmitter Design for world wide market
- Update of existing Transmitters
- Upgrade of Analog Transmitters
- Test bench for TV and Set Top Boxes
Other Benefits
- Support MFN and SFN networks
- Multiple PLP support
- SISO/MISO support
- Input Seamless switching
Technical specifications
Data I/O
ASI Interface
2 ASI input - BNC - 75 Ω
- 188/204 Bytes- 80 Mbps maxi. Packet/burst mode
1 ASI output - BNC - 75 Ω
- 188 Bytes - Burst mode
Ethernet Port
4 Ethernet ports 1GigE - RJ45
- Protocols: IP, RTP, UDP, IGMP (V2 & V3)
- VLAN ID (1 to 4094): IEEE 802.1q
- TSoIP w/o FEC decoding: SMPTE-2022
Data Processing
DTV Standards
DVB-T2/T2-Lite: EN 302 755 v1.3.1, TS 102 831, TS 102 773 (T2-MI)
DVB-T: EN 300 744, TS 101 191
ISDB-T/TB: ARIB STB-B31 and TR-B14
DTMB: GB20600-2006, GY/T 229.1-2008 (SIP)
Input Features
Bit rate adaptation
Input redundancy switching
Modulation
MFN & SFN transmissions
Specific Test modes
- PRBS, Sinus, Spectrum-Gap and Null Symbol insertion
Automatic Gain Control (AGC)
Based on VDC (external sensor) or RF input - user selectable
User-configurable AGC high limit
Reflected Power protection mechanism
Digital Adaptive Precorrections (DAP)
Linear DAP: Amplitude ±3 dB, Delay 0 to 3μs
Non Linear DAP: Phase ±180°
Crest Factor Reduction (PAPR) and Protection clipping
PA Monitoring
4 RF input feedback (-15 dBm ... -5 dBm) / SMA - 50 Ω
- DAP & AGC & Protection mechanisms
- Monitoring: SNR, Shoulders
RF OUPUTS
Main RF output
UHF, VHF Band I & III
0 dBm - 14dBm -20 dBm / N - 50 Ω
Monitoring RF output
Copy of Main RF output
30 dB below / SMA 50 Ω
Control & Management
Control / Monitoring
3 Ethernet ports 1GigE - RJ45 (Web GUI & SNMP/MIB)
LCD Front Panel Display
Power Amplifier Control
2 GPI / Sub-D9 (Dry Contact)
4 GPO / Sub-D9 (Dry Contact)
Clock and Synchronization
* 10 MHz & 1 PPS input/output
* Onboard GPS/GLONASS
1+1 & N+1 Redundancy Management
Up to 8 embedded fully configurable profiles
Profile selection using GPI or IP protocol
Physical
Height x Width x Depth
Format - Weight
Power supply
Power consumption
Front
Back
Ordering codes
XTTR-TW20-4102
DVB-T/T2 TWISTER II exciter
+14dBm UHF, VHF band I & III output
DAP adaptive precorrections
onboard GPS and CTRL port
XTTR-TW20-5102
DVB-T/T2 TWISTER II exciter
+20dBm UHF, VHF band I & III output
DAP adaptive precorrections
onboard GPS and CTRL port
XTTR-TW20-xxx3
onboard GPS + GLONASS
