COFDM Modulator

COFDM Modulator: Fully complying with DVB-T standard Four ASI inputs supporting hot backup SFN and MFN supporting

Outline

Telecast MDDT01A COFDM Modulator is a high performance modulator developed according to Cofdm (DVB-T) standard. It adopts advanced framing structure, channel coding and modulation technology. And it also supports both MFN (Multi-frequency network) and SFN (single frequency network). It has 4 AIS input ports, one GPS.10MHZ input port and one 1 PPS input port. In order to improve the output performance of the transmitter, the DVB-T modulator can simultaneously support linear and nonlinear pre-correction. This device supports local and remote control through NMS software. 

Features

Fully complying with Cofdm standard (EN300744) SFN and MFN supporting Transfer mode 2k, 4k, 8k optional Hierarchy modulation Alpha1, 2 and 4 optional  Transfer bandwidth 6M, 7M and 8M optional Supporting linear and non-linear correction Excellent phase noise and MER performance, MER ≥42db RF output range 36~960MHz, 1hz step Four ASI inputs supporting hot backup Constant temperature crystal oscillator, frequency stability is high up to 0.1ppm Full-size front panel LCD display and keyboard, NMS management.

Specifications

Input			4 channels ASI input, hot backup, BNC port
			GPS 10Mhz reference clock input, BNC port
			GPS 1PPS input, BNC port
Modulation	standard		EN304 744
	FFT		2K,4K,8K
	bandwidth		6M,7M,8M
	constellation		QPSK,16QAM,64QAM
	Guard interval		1/4,1/8,1/16,1/32
	FEC		1/2,2/3,3/4,5/6,7/8
	Hierarchy modulation		Alpha=1,2,4
RF output	ASI loop out		2channels ASI loop out, BNC port
	interface		N type, 50Ω impedance
	RF range		36~960MHz,1hz step
	ATT		-16dbm~+3dbm,0.1db step
	MER		≥ 42db
Linear   pre-correction	Correction points		16
Non-linear pre-correction	Correction points		512
System			Full-size front panel LCD display and keyboard, NMS management
			Software upgrading
General		Demission (W*L*H)	482mm×455mm×44.5mm
		Weight	6.1kg
		Temperature	0~45°C(operation),-20~80°C(storage)
		Power supply	AC 110V±10%,50/60Hz or AC 220V±10%,50/60Hz
		Consumption	28.6W

COFDM Modulator