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Digital Modulator

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4CH Multi Modulator
DMM-1903M4

As a representative and a new released CASTWIN’s Multi-Modulator, it shows advanced performance for received transport stream signal to output as suitable frequency band for ATSC(8VSB) standards. Also, it is able to modulating up to 4 channels with the direct digital frequency conversion. Also, it is very easy to control with high class front VFD.

· Cost effective with Multi modulation for ATSC(8-VSB)
· Wide-range used device with adapted various
modulation standards
· Cost reduction for installing with simple set-up and
operation
· Stable output with Hybrid AMP integrated
· Secure more space with compact and light weight
design
· Advanced Digital Up-Converter (Direct Digital Synthesis)
· 4 X ASI input transport stream & 1 X RF output
· User adjustable output level and frequency
· Front panel control
· MER Before Equalizer: 40dB
· Phase Noise: -108dB@20KHz
· Frequency: 50MHz ~ 1GHz
· Excellent RF output performance
· Spurious: ≤-65 dB
· Output Level: 55±5 dBmV
· PCR Jitter: ≤ ±200 ns
 

Digital Input

 

 

Transport Stream

ASI

Connector

BNC (75)

Coding

ITU-T (J.83) Annex A, B and C

Bit Rate

1~52 Mbps

Packet Format

188 Byte

Symbol Rate

1~7Mbps

Modulation

64,256 QAM

 

 

RF Output

 

 

Frequency  Range

50~1000 MHz

Impedance

75

Output Level

50 ± 5 dBmV

Level Control Range

0 ~ -15 dB

MER  After Equalizer

42 dB

MER  Before Equalizer

40 dB

Phase Noise

 -110 dB@20KHz

Adjacent Channel Carrier/Attenuation Characteristic

-50 dB (Out of band)

Spurious

-65 dB

Return Loss

17 dB

Frequency Response

± 0.5 dB

Frequency Tolerance

± 2 ppm

Group Delay

± 20 ns

PCR Jitter

± 200 ns

Frequency  Range

50~1000 MHz

Impedance

75

Output Level

50 ± 5 dBmV

 

 

General

 

Power Requirements

AC 90~230V, 50/60Hz

Power Consumption

100W

Weight

4Kg

Dimensions

482 x 44 x 383 mm

 

 

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