Digital Transmitters
Generals. The new TDTU 900 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 900 has an output power range
of 900 Wrms. The Transmitter is fully broadband in the whole UHF band.
Digital Modulator. The TDTU 900 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 900 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.
Digital Transmitters
Operating FrequencyRange 470 -860 MHz
Output Power:
TDTU 2 2 Wrms
TDTU 10 10 Wrms
TDTU 50 50 Wrms
TDTU 100 100 Wrms
TDTU 200 200 Wrms
TDTU 300 300 Wrms
TDTU 400 400 Wrms
TDTU 500 500 Wrms
TDTU 600 600 Wrms
TDTU 900 900 Wrms
TDTU 1200 1200 Wrms
TDTU 1600 1600 Wrms
TDTU 3200 3200 Wrms
TDTU 6400 6400 Wrms
Output connector:
From 2 to 100 Wrms output power N (otherson request)
From 200 to 400 Wrms output power DIN 7/16'' (otherson request)
From 500 to 600 Wrms output power EIA 7/8'' (otherson request)
From 900 to 1200 Wrms output power EIA 1+5/8'' (otherson request)
From 1600 to 6400 Wrms output power EIA 3+1/8'' (otherson request)
Output impedance 50 W
Shoulder attenuation > 38 dB
Output frequencyresponse ± 0.5 dB
Network system adaptersincluded in digital modulator MFN or SFN
DigitalModulator 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 4 3 Vpp
Frequency 10MHzwithin 1 PPM
Connector type BNC
Impedance 50 W/ >1 kW user selectable
Time reference input, SFN timing:
Amplitude 0 ÷ 5 V
Frequency 1 PPS
Transition Positive edge
Connector type BNC
Impedance 50 W / >1 kW internally configurable
Digital Modulator Data Outputs:
Center frequency output From 30 MHz to 1 GHz in 1 Hz steps
Output Frequency stability 6 1 ppm
Output Level stability 6 1 dB
Frequency response 6 0.5 dB (ref. to centre frequency)
IF Output return loss > 16 dB with 50 V
Harmonics and Spurious < -56 dBc
MER > 40 dB
Spectrum Polarity
Inverted / not inverted - selectable by
front panel menu
Output bandwidth 6-7-8 MHz
Metering:
Forward and reflected power, DC voltages and currents, inlet air and heatsink temperatures
Alarms:
VSWR, over temperature, cooling system failure, overdriving;
Power supply:
115/208/230/240 Vac±10%, 47 to 62 Hz single-phase or 208/220/240/380/415±10%, 47 to 62 Hz, three phases
Operating conditions:
Cooling Forced air with axial fans
Operating temperature -5° ÷ +45° C
Humidity 95% max
Weight:
TDTU 2 105 kg
TDTU 10 120 kg
TDTU 50 122 Kg
TDTU 100 128 Kg
TDTU 200 158 Kg
TDTU 300 164 Kg
TDTU 400 184 Kg
TDTU 500 188 kg
TDTU 600 198 kg
TDTU 900 405 kg
TDTU 1200 440 kg
TDTU 1600 520 kg
TDTU 3200 790 kg
TDTU 6400 1650 kg
Size (WxHxD):
TDTU 2 540x275x720 mm
TDTU 10 540x405x720 mm
TDTU 50 540x405x720 mm
TDTU 100 540x405x720 mm
TDTU 200 540x550x720 mm
TDTU 300 540x550x720 mm
TDTU 400 540x550x720 mm
TDTU 500 540x550x720 mm
TDTU 600 540x805x720 mm
TDTU 900 540x805x720 mm
TDTU 1200 540x1480x840 mm
TDTU 1600 540x1480x840 mm
TDTU 3200 540x1480x840 mm (2 cabinet)
TDTU 6400 540x1480x840 mm (4 cabinet)
ITEL S.r.l. TELECOMUNICATIONS AND BROADCASTING SERVICES Via Friuli, 6 - 33074 Fontanafredda (PN) - ITALY Tel. +39 0434 997667 - Fax. +39 0434 997687