ISDB-T Modulator, DTV Headend.

Specifications

ISDB-T Modulator
1. ISDB-T (ARIB STD-B31) and ISDB-TB
2. 4 Way ASI input
3. RF output: 40~860MHz

ISDB-T Modulator

 

Outline

ISDB-T modulator is developed to adapt Japan, Brazil, Argentina and other South American country's terrestrial digital television, the modulator's channel coding and modulation mode is fully complying with the ARIB STD-B31 standard. This ISDB-T modulator supports four TS hot backup input, single frequency network and multi-frequency network, linear and nonlinear pre-correction function, layered transmission and the three transmission modes mentioned in the standard. Furthermore, this device can be upgraded and controlled through network system, which can be widely used in ISDB-T digital broadcasting network's setting up and set-top box design's production and test.

 

Features 

# Fully complying with ISDB-T (ARIB STD-B31) and ISDB-TB standard
# Single frequency and multi-frequency network
# Layered transmission with A, A+B, A+B+C hierarchy modes
# DVB TS input (without IIP packet), TS multiplexing, re-multiplexing and multiplexed frame generating;
# ISDB-T BTS input (with IIP packet), IIP packet parsing and multiplexed frame generating
# Three transmission modes: mode1(2k), mode2(4k), mode3(8k)
# Liner and nonlinear pre-correction function
# MER≥40db
# RF output range: 40~860MHz in 1Hz step
# 4 channel ASI input, hot backup
# Constant temperature crystal and excellent frequency stability
# RF output range of 100~860Mhz, 1hz step
# 2 ASI inputs with loop out and hot-backup online
# Constant temperature crystal oscillating and excellent frequency stability(reach up to 0.1ppm)
# LCD display, keyboard and NMS operation

 

Specification

Signal input	4 Way ASI input, hot backup, BNC interface
	GPS 10MHz reference clock input, BNC interface
	GPS 1PPS input, BNC interface
	Connector Specifications: BNC Block, impedance 75Ω
Modulation	Standard	ARIB STD-B31
	Mode	mode 1(2k),mode 2(4k),mode 3(8k)
	Constellation	DQPSK,QPSK,16QAM,64QAM
	External coding	RS (204,188)
	Internal coding	Convolution (1/2,2/3,3/4,5/6,7/8)
	Guard interval	1/4,1/8,1/16,1/32
	Hierarchy mode	A,A+B,A+B+C
	Time domain interlacing	mode 1: 0,4,8,16 mode 2: 0,2,4,8 mode 3: 0,1,2,4
	Bandwidth	6MHz,7MHz,8MHz
RF Out	Connector	N Type, 50ΩImpedance
	RF range	40~860Mhz,1hz step
	Output level ATT	-16dbm~+3dbm,0.5db step
	MER	≥ 40db
System	LCD display, keyboard and NMS operation
	Supporting software upgrading through network
General	Demission (W*L*H)	482mm×455mm×44.5mm
	Weight	6kg
	Temperature	0~45°C(operation),-20~80°C(storage)
	Power supply	AC 100V~240V,50/60Hz
	Consumption	22W