MODEL: GME1113

Specifications:1KW UHF ATV Transmitter Professional used for TV transmitter station.

Standard: PAL-D/K/G/I

Frequency: UHF 470MHz~860MHz Specify frequency

Outputpower:≥1kw

Product introduction:GME1113 1KW UHF transmitter is mainly composed of seven parts: exciter, power amplifier unit, the main control board, electric control and power distribution unit, switch power supply, passive component (splitter, combiner, filter, directional coupler etc.), cooling system.

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Overview

The GME1113  TV transmitter is mainly composed by exciter, power amplifier, passive component (including splitter, combiner, band-pass filter, ect.), MCU, power supply and power distribution unit and air cooling system.
The exciter module consists of audio IF modulator, video IF modulator, DP corrector, DG corrector, group delay corrector, inter-modulation corrector, exciter’s PA, up converter and precision bias local oscillator, exciter’s switching-mode regulator and exciter’s control unit.
The pre-distortion correction index of the exciter can be remotely adjusted via a PC.

Features

1)The transmitter adopts combined amplification of audio and video signals with single transmission link.
2)Redundant backup design minimizes the accident off-air time.
3)Dual exciters configuration – main/standby exciter backups each other. The standby exciter will be switched on automatically with no intermission in case of the main one breaking down accidentally.
4)Redundant PA configuration – The transmitter consists of three 550W PA modules in high uniformity which makes them able to be replaced with each other freely.
5)Redundant Switching-mode regulator configuration –two of 2.5KW switching-mode regulators are connected in parallel with current distribution balanced, the status of which is monitored by the microprocessor of the power monitoring module. 6)The operation status of the overall transmitter can be regulated automatically according to the status of the switching-mode regulators
7)The transmitter is designed of intelligence and network interface which help to realize monitoring and control and management by means of PC.
8)The transmitter is equipped with comprehensive technical parameter measurement, monitoring and control systems, as well as perfect PC software.
9)The transmitter is equipped with self-diagnosis function and self-adjustment function.
10)All the technical parameters can be accessed on the LCD on the front panel of the transmitter.

Operating Channel

directional channel(470~860MHz) in frequency band UHF

Modulation Indepth

≤87.5%

Output Power

sync peak power 1KW

Aural/Visual Power Ratio

10:1

Aural/Visual carrier frequency difference

6.5 MHz

In-Band Inter-modulation

≤-51dB

Non-required emission outside adjacent channel

≤1mW,≤-63dB

RF Output interfack

EIA 1-5/8” without flange

RF Output Impedance

50Ω

Carrier frequency deviation

±500Hz

Cooling system

Air  cooling

PS voltage

380V±10%/50Hz, 3-phase 4-line

Power cosumption

≤3KVA(black+audio)

dimensions

581(width)*1960(height)*1000(depth)mm

Environment temperature

5~40℃

Altitude

≤2000m

Relative humidity

≤95%

Romote interface

RS485

Video Input

1Vpp±3dB,75Ω

Reflection Loss of Video Input

≥30dB

Amplitude/Frequency response

Refer to technical manual

Modulation Mode

Amplitude modulation, negative polarity

Group Delay – Frequency Response

≤±50ns (0~5.5MHz)

Field Square Wave

≤2%

Line Square Wave

≤2%

2T pulse

≤2%

Luminance Non-linearity Distortion

≤8%

Differential gain (DG)

≤±5%

Differential phase (DP)

≤±4°

Chrominance/Luminance Gain Difference

≤10%

Chrominance/Luminance Delay Difference

±30ns

Signal to Random Noise Ratio S/N (RMS, Un-weighted)

≥50dB

Signal to Periodic Noise Ratio S/N (Peak-Peak)

≥50dB

Incidental Carrier Phase Modulation(ICPM)

±5°

Audio Input

0dBm±6dBm,600Ω balance

Modulation mode

FM

Carrier Frequency Deviation

±500Hz

Pre-emphasis Time Constant

50μs

Maximum Frequency Deviation

±50KHz

Audio Harmonics Distortion

≤1%(30Hz~15KHz)

Audio Amplitude-Frequency response

±1dB(30Hz~15Hz)

FM S/N Ratio

≥60dB

AM Noise(No modulation)

≤-50dB

Inter-carrier Noise (100%modulation )

≤-45dB

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