TDTU 450
Digital Transmitters
  
 

 

Generals. The new TDTU 450 Transmitter is fully compatible with the international DTV standards (DVB-T, ATSC, ISDB, etc....) and suitable for SFN (Single Frequency Network) and MFN (Multi Frequency Network) applications.


Output Power. The TDTU 450 has an output power range of 450 Wrms. The Transmitter is fully broadband in the whole UHF band.


Digital Modulator. The TDTU 450 is equipped with an “high performance” digital modulator DVME-16 fully configurable, compatible with the most demanding requirement of Digital Television Networks.


Fully frequency agile. The Digital Modulator has an intuitive and easy to use interface to select the frequency without any readjustment needing.


Digital Precorrection. A powerful built-in linear and non-linear precorrector allows to optimize the perfomances of any digital transmitter maximizing at the same time the output power, so extending the transmitter coverage area. The Digital Precorrector settings are made by means of an easy to use and highly intuitive graphical user interface software.

Phase noise. Very low phase noise oscillators allow to optimize the BER and MER performances.

Analog compatibility. The TDTU 450 Transmitter is also available in a correspondent analog version easily field upgradable to digital into the same rack or in dual-mode configuration locally and/or remotely selectable in analog/digital operation for maximum flexibility.


Metering. Full transmitter metering, control, setting and system diagnostic available in the front panel and (optional) remotely.

Filtering. Critical mask and non-critical mask filters available.

 
   
 
     
 
 
TDTU 450
Digital Transmitters
  
     
   

RF Data:
Operating Frequency Range 470-860MHz

Output Power:
TDTU 2 2 W rms
TDTU 10 10 W rms
TDTU 50 50 W rms
TDTU 80 80 W rms
TDTU 150 150 W rms
TDTU 300 300 W rms
TDTU 450 450 W rms

Output connector:
up to100 W Ntype (others on request)
Over 100 W DIN7/16“(others on request)

Output impedance 50 W
Output Frequency stability ± 1ppm with internal reference
Output Levelstability ± 0.5dB
Frequency response ± 0.5dB (ref. to centre frequency)
Harmonics andSpurious < -60 dBc
Shoulder attenuation > 38 dB
MER > 38 dB
Spectrum Polarity Inverted / not inverted - selectable by front panel menu
Output bandwidth 7-8 MHz (6 Mhz as option)
Network system adapters included in digital modulator MFN or SFN

Digital Modulor Data Inputs:
Serial data input (BNC connector,75 W) 2 ASI inputs (Optional four ASI inputs available on request)

Clock reference input:
Amplitude 100 mV ÷ 3 Vpp
Frequency 10 MHz within 1 PPM
Connector type BNC
Impedance 50 W / >1 kW user selectable

Time reference input, SFN timing:
Amplitude 0 ÷ 5V
Frequency 1 PPS
Transition Positive edge
Connector type BNC
Impedance 50 W / >1 kW internaly configurable

Metering:
Forward and refected power,DC voltages and currents

Alarms:
VSWR,over temperature,cooling system fure,overdriving;

Power supply:
115/208/230/240 Vac±10%, 47 to 62 Hz single-phase or 208/220/240/3808415±10%, 47 to 62Hz,three phases

Operatng conditions:
Cooling Forced air with axial fans
Operating temperature -5°÷ +45°C
Humidity 95% max

Dimensions and weight:
TDTU 2 Standard19“,4U
TDTU 10 Standard19“,4U
TDTU 50 Standard19“,4U
TDTU 80 Standard19“,4U
TDTU 150 Standard19“,6U
TDTU 300 Standard19“,6U
TDTU 450 Standard19“,7U

  
 
 
   

ITEL S.r.l.
TELECOMUNICATIONS AND BROADCASTING SERVICES
Via Friuli, 6 - 33074 Fontanafredda (PN) - ITALY
Tel. +39 0434 997667 - Fax. +39 0434 997687