Promax MO-381 ISDB-T/Tb MFN/SFN broadcast modulator (OEM format)

  • Manufacturer: Promax
    Model: MO-381
    Guarantee: 12 month
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    Hotline: (+84) 867820758

    Phone+84 (24)62923267

Input streams


2 x ASI (EN 102 773)

1 x IP (SMPTE-2022 – UDP, RTP and FEC)

TS mode: (188-bytes packets) Layer A only

BTS mode: Layers A, B and C

Switching: Automatic and seamless between any two BTS inputs in SFN mode. Automatic in MFN mode. In both modes the switchover may be permanent or temporary

RF Output

Frequency Range: 30 to 900 MHz

Output level: -20 dBm to -40 dBm

Return Loss: > 20 dB

Spectrum Polarity: Inverted / Normal

Harmonics and Spurious: > 60 dB

MER: > 44 dB


MFN: External or Internal 10 MHz

SFN: External 10 MHz and 1 pps

Transmission modes

Modes: Mode 1, Mode 2 and Mode 3

Guard Interval: 1/4, 1/8, 1/16 and 1/32

Code Rate: 1/2, 2/3, 3/4, 5/6 and 7/8

Constellation: DQPSK, QPSK, 16-QAM and 64-QAM

Time Interleaving :I=0,4,8,16 (Mode 1), I=0,2,4,8 (Mode 2) and I=0,1,2,4 (Mode 3)

Others: Estimates of the primary and secondary TS network delay margins

SFN Delay insertion 

Local delay: Adjustable between -50,000.0 µs and +50,000.0 µs with 100-ns resolution

Test modes

PRBS: Modulates 23-bit PRBS-filled NULL packets

Blank Carrier: Carriers are blanked between two configurable values

NULL first symbol: First symbol of every frame is zeroed

Single RMS tone: Tone at central frequency with the same RMS power as the ISDB-T/TB signal

Signal predistortion

Crest Factor Reduction: Enable/Disable

Range: 8 to 11 dB

Resolution: 0.1 dB

Non linear predistortion: Enable/Disable

Number of points: From 2 to 16. Linear interpolation

Table AM-AM Input Amplitude: -12 dB to +12 dB / Output Amplitude: -6 dB to +6 dB

Table AM-PM Input Amplitude: -12 dB to +12 dB / Output Phase: -30° to +30°

AM Resolution: 0.1 dB

PM Resolution: 0.1°

Linear predistortion: Enable/Disable

Number of points: 72. Linear interpolation

Amplitude Correction: From -6 dB to +6 dB

Group Delay Correction: From -1500 to +1500 ns

Amplitude Resolution: 0.01 dB

Group Delay Resolution: 1 ns


Dimensions: 116 (W.) x 61 (H.) x 258 (D.) mm

Weight: 1.57 kg




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