::: 엘에스통신주식회사 :::

8VSB REMODULATOR.

■ APPLICATION

• This product receives 8VSB RF signals(a band of VHF or UHF) of digital terrestrial broadcasting and demodulates into MPEG-2 TS signals

after converting to a band of standard IF. It remodulates into 8VSB from TS signals, which modification and distortion of digital signals

appeared in the process of transmitting radio waves are corrected with proper characteristics for retransmitting, and then it retransmits them as RF signals.

■ FEATURE

• It is an 1RU 8VSB remodulator exclusive for digital terrestrial broadcasting.

• It provides full support for 8VSB, ATSC digital broadcasting standard.

• It restores signals without any errors even in the area with weak signals.

• It has superior SNR compared to existing products due to application of a digital filter.

• It can produce RF signals in high quality with phase noise of 98dBc@20kHz offset below.

■ SPECIFICATION

	UNIT	DRM-171M	NOTE
Frequency Range	MHz	54~806
Chennel Range	dBuV	6(1CH)
Input Level	dBuV	30~85	ASTC 8VSB Modulator Standard
Output Level	dBuV	110±5
Adjacent channel attenuation characteristics	dB max	1CH(6MHz) ± 500KHz : -33 /fc ± 9MHz : -42
Spurious	dB max	-60
Frequency Deviation	ppm max	±5
Return Loss	dB min	10
Phase Noise	dBc/Hz max	-95	@20KHz
Frequency Response	dB max	±0.5	~ 5.35MHz max
Group Delay Response	ns max	±50	~ 5.35MHz max
Signal to Noise	dB min	27
Power Supply	V / Hz	AC 220/60
Dimension	mm	483(W) X 300(D) X 44(H)

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8VSB REMODULATOR