Analog TV Transmitter Describe
We can provide analog TV transmitters with output power ranging from 1kW to 30KW.The frequency bands include UHF and VHF; Modulation methods include PAL-K/PAL-D/PAL-I/NTSC/SECAM. Cooling methods include air cooling and liquid cooling. We can provide analog TV antenna switch, suitable for dual feeder use in high-power transmitters.
General Technical parameters
RF Specifications:
TV standard: PAL-D/K/E/I/G
Output power: 300W~30KW
Vision output power stability: ±0.25dB
Sound/Vision carrier frequency difference: 5.5±0.001MHz
Vision /Sound Power Ratio: 10:1
RF output impedance: 50Ω
Non-required radiation (out of adjacent channel): 60dB below the carrier, and ≤20mW
RF output connector: ¢79.4 (¢3-1/8) or on request
Vision Specifications:
Video input level: Sync=0.3Vp-p; Video=0.7Vp-p
Video input impedance: 75Ω
Video input reflected loss: ≥34dB
Output load VSWR: <1.1
Modulation mode: Amplitude, negative
Differential gain (DG): ±5%
Differential phase (DP): ±5°
Signal to noise S/N: 50 dB (un-weighted) / 58 dB (weighted)
Inner-carrier spurious phase modulation (ICPM): ±5°
Sound Specifications:
Input level: 0dBm ±6dBm, 600Ω balanced
Modulation mode: FM
Modulation capability: > ±100KHz frequency deviation
Maximum frequency deviation: ±50KHz
Pre-emphasis: 50μs
Harmonic distortion (100% modulation): ≤1% (30Hz~15KHz)
Amplitude-frequency response (50% modulation): ±1dB (30Hz ~ 15KHz)
FM S/N ratio: ≥ 60dB (1000Hz, 100% modulation)
AM noise (no modulation): ≤- 50dB
Inner carrier noise (100% modulation): ≤- 45dB
Service conditions:
Ambient temperature range: 0 ~ 45°C
Relative humidity: 0 ~90% , non condensing
Atmosphere pressure: 86 ~ 106Kpa
AC Mains: 380V(+15%/-20%), 50Hz±1Hz or as requested