LOW POWER TV TRANSMITTERS

Description

LOW POWER TV TRANSMITTERS

 

The ETVD Series of Low Power TV Transmitters – Transposers – Gap-fillers is the ultimate in technology, quality and performance

The new ETVD TX 25-150 transmitter of the Eletec family is an apparatus capable of providing a DTV output signal up to 150W. The Digital Exciter modulator board is based on the most advanced technologies – a FPGA (Fiel Programmable Gate Array) and Direct Digital Up-Conversion RF. Extremely compact and efficient equipment enclosed in 2 standard 19 ″ rack units, with optimized energy consumption.

The ETVD TX 25-15 uses the latest LDMOS technology and provides the necessary modulation in accordance with the required transmission standard.
The modulation process is completely digital for both Audio and Video to provide high performance and stability, and includes Linear and Non-Linear precorrection.
The ETVD TX 25-15 is equipped with a complete set of audio inputs and an internal GPS receiver (1pps and 10Mhz) for the necessary synchronization. An intuitive local interface displayed on the LCD display allows real-time monitoring and configuration of equipment parameters.
The ETVD Low Power Transmitters are a compact solution housed a single 19” rack drawer (up to 3U).
Main features

Available in all analog standards (PAL SECAM NTSC) with digital processing for high performance
Available in all digital standards (DVB-T / T2, ISDB-T / Tb, ATSC)
Available in band I – III – IV – V
From 25Wrms to 150Wrms with LDMOS technology
Integrated linear and non-linear adaptive precorrector
Dual ASI seamless with priority selection
Ip-to-Asi input (optional)
Application for SFN and MFN networks
Internal GPS receiver
Gap-Filler with high efficiency and echo canceller
Web server, SNMP protocol

 

Main Characteristics- Available in all Analogue standards ( PAL, SECAM, NTSC ) with digital processing for high performances – Available in all Digital standards (DVB-T/T2, ISDB-T/Tb, ATSC ) – Available in band I – III – IV – V- From 25Wrms to 150Wrms with LDMOS technology- Integrated Linear & Non-Linear Adaptive Precorrector- 2 ASI inputs with seamless and priority- IP-to-ASI input option- MFN or SFN networks application- Internal GPS receiver – Gap Filler with Hi-Efficiency Echo canceller- Web Server, SNMP Protocol

 

GENERAL Frequency Range Band I, III, IV, V Channel Bandwidth 6, 7, 8 MHz RF Load Impedance 50 ohms, 1.1:1 VSWR over any single TV channel RF Output Connector N or 7/16 AC MAINS AC Line Voltage 2-phase 50/60 Hz, 100V to 240V AC Line Variation 10% to -15% Power Factor > 0.97 Power consumption 641.2VA @max output COFDM ENVIRONMENTAL Altitude Up to 4,000m above sea level Ambient Temperature 14º to 113º F (-10º to 45º C) at sea level Humidity Up to 95%, non-condensing Cooling Method Forced Air Acoustic Noise < 65 dBA (measured 1m in front of cabinet) ANALOG Tv Standards B/G/D/K/K1/M/N Colour Systems PAL, NTSC Video Input Interfaces 2 BNC 75Ω, 1Vpp±6 dB. Modulation Depth 5÷15 % Audio Input Interfaces 2 XLR 600Ω/5 KΩ, balanced / unbalanced, 0dBm -6dB +21dB Audio encoder mode Mono/Stereo/Dual Sound Fm Deviation Up to 100 KHz (200 KHz for standard M), Hard Limiter 1KHz step Power Output up to 600Wps Output Power Reduction 0 to -10dB ECHO CANCELLER (optional) Cancellation Level 30dB Maximum Echo Level + 15dBc (Over the main signal) RF Sample Level 0dBm for transposer nominal power MECHANICAL Dimensions (WxHxD) Weight (approx.) mm 484x90x550 Kg 19 COFDM: DVB-T/T2, ISDB-T/Tb (SBTVD) Systems ISDB-T, ISDB-Tb, DVB-T, DVB-T2 Digital Inputs ISDB-T/Tb: 3 BNC 75Ω ASI (Hierarchical up to 3 Layers) DVB-T/T2: 2 BNC 75 Ω, DVB-ASI (Hierarchical) IP-To-ASI: RJ45 Crest Factor Maximum 13 dB Shoulder Level > 40dB MER > 37dB Harmonics (before filter) < -40dB Central Carrier Suppression > 75dB Frequency Stability (without ext. ref.) ± 150 Hz/month Frequency Offsets 1 Hz resolution MPEG packet length 188/204 byte packets, continuous and burst Network Operations MFN, SFN Optional Output filter (NCM) with insertion loss 0.3 dB @ F.C. 0.7 dB @ F.C. ± 3.8 MHz Power Output up to 150Wrms Output Power Reduction 0 to -10 dB 8-VSB: ATSC System ATSC A-53, 8-VSB DTV standard Digital Input 2 BNC 75 Ω ASI (SMPTE 310M) Internal Precise Frequency input 10 MHz (1) Internal Gps Receiver Optional Phase Noise < 104 dBc/Hz @ 20 kHz offset (ATSC A/64) Pilot Frequency Stability Less than ±150 Hz/month Less than ±3 Hz with internal or external PFC Harmonic Radiation and Spurious Meets mask requirements specified in FCC 5th and 6th report and order Sideband Performance Compliant with FCC radiation mask, when measured at the output of optional output filter Optional output filter with insertion loss 0,3 dB @ F.C. 0,5 dB @ F.C. ± 2,7 Mhz Power Output up to 225Wrms Output Power Reduction 0 to -10 dB