DMB-2038 ATSC Modulator adopts advanced baseband processing and up-conversion technology, and constant-temperature crystal oscillator, with which the frequency stability reaches to 0.1PPM. It conforms to ATSC A.53 standard, with high-quality RF signal output. It also integrates baseband processing technology of linear and non-linear digital pre-distortion (DPD), to improve adjacent channel power ratio (ACPR) by over 10dB. Perfect automatic protection mechanism, redundancy backup function, and support of centralized management of NMS network management software, make the device to be applied widely to ATSC digital broadcasting system constructions.

FEATURES

• Conforms to ATSC A.53 standard
• 2* ASI and 2* SMPTE 310M input interface backups
• Support of adaptive non-linear/linear DPD
• Frequency stability reaches to 0.1PPM
• Excellent ratio frequency output index
• Function of power-off memory
• Support of centralized management of NMS network management software
• Support of local software upgrading via network management interface

 

SPECIFICATIONS

TRANSPORT STREAM INPUT AND OUTPUT
MPEG TS & SMPTE 310M Input
2* ASI input, support of backup
Packet frame: 188/204 bytes
Bit rate: ≤19.393Mbps
2* SMPTE 310M input, support of backup
Interface: BNC, 75Ω
RF Output
Frequency range: 40~960MHz successionally adjustable, in 1Hz steps
Frequency stability: 0.1PPM
RF output level: -26~3dB successionally adjustable, in 0.1dB steps
Signal stability: ±0.1dB
MER: ≥42dB
Shoulder: ≥48dB
Spurious: ≥50dB
Interface: N, 50Ω

MODULATION
ATSC Modulation
Standard: ATSC A.53
Constellation: 8VSB
Bandwidth: 6MHz
CAPABILITY OPTION
GPS Reference Clock
1* 10MHz reference clock input
1* 1PPS reference clock input
Linear/Non-linear DPD
Adaptive digital pre-distortion for 1* RF input interface
Non-linear DPD: able to improve ACPR by over 10dB
Linear DPD: able to adjust non-flatness by over 10dB

GENERAL OPTIONS
Control and monitoring modes
Interface: 1*RJ-45, 10/100 Base-T network management interface
Remote control: NMS network management
Local control: keys on front panel and LCD control
Physical and Power
Voltage: 90~260VAC, 50/60Hz
Consumption: 25W
Operating temperature: 0~50°C
Dimensions: 430mm(W)*400mm(D)*45mm(H)
Weight: 4 KGS

 

DIAGRAM