RF-Transmissions Systems - A2D Solutions : Screen TV Transmitters Exciters : 10 kW TV TRANSMITTERS AND TRANSPOSERS

[RF-Transmissions Systems - A2D Solutions]

10 kW TV TRANSMITTERS AND TRANSPOSERS

TV TRANSMITTERS AND TRANSPOSERS

Screen 10 kW TV TRANSMITTERS AND TRANSPOSERS

MAIN FEATURES:
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Modular construction.
Conventional and forced-air cooling.
AGC and ALC controls.
3-slope linearity precorrection.
Excellent noise figure.
LDMOS technology in the UHF versions.
Digital ready.
Programming of local oscillator from
front panel.
Pre-set for precision OFFSET.
Multifunction digital display.
Soft-start circuit.
Low power consumption.
Economy circuit in case of input signal lack.
SAW vestigial filter.
Sync restore (SCT).
Group delay precorrection (SCT).
Automatic white level and sync limiter (SCT).
Multistandard modulator (SCT).
ICPM and differential phase precorrector optionavailable.
Available in stereo/dual sound version.

SCT 103UB 10kW UHF
TRANSMITTER WITH
PRECISION OFFSET OPTION
(TWO RACKS VERSION)

This series of solid-sate high-output-powertelevision transmitters constitutes the new generation of
equipment produced by Screen Service Broadcasting Technologies. Theexcellent efficiency and reduced size characterizing these transmitterspermit the possible use of high output powers even in fairly crampedspaces.

SCT 103UB 10kW UHFTRANSMITTER
WITH DUAL DRIVER AND PRECISION
OFFSET OPTIONS

The amplifiers making up this series oftransmitters are fully independent and redundant, thus allowing theremoval of single modules without having to interrupt the service.

Each individual amplifier contains its ownpower supplies so as to facilitate maintenance operations and avoid theneed for additional accessories and spare external power supplies. Thedriver stages consist of two pre-amplifiers and an exciter (or two inthe case of "double driver" option) so as to maintain a high level ofredundancy.

All the functions and operating parametersof the equipment are operated by a microprocessor and
can be checked by means of a set of multifunction displays or by meansof analogue and digital interfaces located on the rear panels of eachindividual stage.

The units in this series maintain optimaloperating characteristics even when used for the transmission ofdigital signals and assure very low de-rating thanks to the verysubstantial linearity and to the oversizing of the amplification stages.

MODEL-SPECIFIC DATA
Model	Output band	Dimensions	Analog output power p.p.		Digital output power (DVB-T) without filter (Shoulders -36 dB @ Fo ± 4.3 MHz)
SCT,SCR, DBT *			Nominal	Max.
103FB 103TB 103UB	VHFI VHF III UHF	3x 44 U 3 x 38 U 2 x 44 U or 3 x 36 U	10kW 10 kW 10 kW	12kW 12 kW 14 kW	3200W 3200 W 3200 W
* SCT Series = analog transmitters SCR Series = transposers DBT Series = digital transmitters

Specifications and characteristics are subject to changewithout notice.

10kW TV TRANSMITTERS AND TRANSPOSERS

TECHNICAL CHARACTERISTICS
TRANSMITTER VERSION
VIDEO PARAMETERS
Input impedance Input level White / Sync level limiter 2T K factor Amplitude / frequency response Differential gain Differential phase Group delay Sync pulse compression S/N ratio (weighted) Pre-emphasis ICPM Luminance non linearity Field time bar tilt Line time bar tilt	75 Ohm 1 V p.p. ±3 dB 95% < 1.5% ±0.5 dB (throughout the vision band) < 5% < 3° ±35 ns (throughout the vision band) < 3% > 60 dB 50 µs or 75 µs or flat < 3° < 4% < 2% < 2%
AUDIO PARAMETERS
Input impedance(balanced) Input level Frequency response (30 Hz to 15 kHz) T.H.D. (30 Hz to 15 kHz) S/N ratio (un-weighted) Stereo / Dual sound option	600 Ohm or >5 kOhm, selectable 0 dBm ±6 dB ±0.4 dB < 0.4% > 60 dB Available
TRANSPOSERVERSION
Input frequencybands Input impedance Input matching Input level amplitude A.G.C. + A.L.C. dynamic Noise figure	VHF I, VHF III,UHF 50 Ohm > 26 dB -30 to -75 dBm > 45 dB < 8 dB
GENERAL
Available standards Cooling Operating temperature Maximum relative humidity Mains power supply External reference frequency input Protections Output connector Output impedance Working class Frequency stability I.M.D. at rated output power Harmonics Spurious emissions External interfaces	B, D, G, H, I,K, M, N Forced air cooling -10°C to +45°C 90%, non condensing 230/400 V AC ±15% 3 phases 5 MHz or 10 MHz Overpower SWR Overvoltage Overcurrent Overtemperature 3+1/8” EIA 50 Ohm AB 1 ppm better than -57 dBc (-60 dBc typical) - 60 dB or better - 60 dB or better logic and analog signal outputs, enable input, RS 485

10 kW TV TRANSMITTERS AND TRANSPOSERS TV TRANSMITTERS AND TRANSPOSERS
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10 kW TV TRANSMITTERS AND TRANSPOSERS