Digital TV Transmitter 1550nm External Modulation CATV Optical Transmitter with FC/APC Sc/APC

Product Description

Digital TV Transmitter 1550nm External Modulation CATV Optical Transmitter with FC/APC SC/APC

Products Descriptions
 

This transmitter is a high-index, multi-functional 1550nm internally modulated optical transmitter in top level. It adopts high linear DFB laser, with built-in pre-distortion compensation and AGC, APC, ATC control,which greatly improves the comprehensive index of the system.
HT1800S series 1550nm internally modulated optical transmitter is the core device for the construction of CATV secondary transmission networks. It is mainly used for value-added services such as TV image signal, digital TV signal, telephone signal and data (or compressed data) signal. It is a high-quality but low-cost solution to realize triple play and FTTx network transmission systems.

Features
 

* It adopts original low chirp and high linearity DFB laser as signal source.
* The perfect predistortion circuit ensures the perfect performance of CTB and CSO in high standard CNR value.
* Automatic gain (AGC) control enables stable output in different RF input level.
* Different networks can be optimized by OMI adjustment.
* Fully automatic case temperature control, intelligent fans, the fans starts to work when case temperature reaches 30 .
* Built -in dual backup power supply, hot plug and automatic switch supported.
* The working parameters of the whole machine are controlled by microprocessor and the LCD status display on the front panel has many functions such as laser status monitoring, parameter display, fault alarm,network management, etc.; once the working parameters of the laser deviate from the allowed range set by the software, the system will alarm promptly.
* Standard RJ45 interface provided, supporting remote network management of SNMP and WEB.

Preparation before installation

1 Please examine the machine to see if there is distinct
2 Please examine if the accessories is complete and the quality cards is here. If not, pls contact sales or dealer

Installation

1 Please keep a space about 4.5cm between machines for ventilation.
2 Please make sure: the socket works very well and well grounded; The impedance ≤4Ω; 220V power with three cablesthe middle one should connected to the groundIncorrect grounding may hurt the device or influence the quality of signal.
3 Please make sure the key is turned to OFF before the power supply connected.
4 Please keep the interface of the fiber clean before connecting the fiber. The connector could choose FC/APC or SC/APC.

Diagram
 

Main Technical Parameters

Category	Items	Unit	Index					Remarks
			Min.		Typ.		Max.
Optical Index	Operating Wavelength Range	nm	1528.77				1563.86	Compatible with ITU wavelength
	No. of Output Ports				1		2
	Output Power per Port	dBm	3				10	1dBm interval
	Laser Linewidth	MHz			0.65		1.0
	SMSR	dB	45		50
	XP	dB	20
	RIN	dB/Hz					-160	RIN(20~1002MHz)
	Optical Return Loss	dB	50
	Fiber Connector		SC/APC					FC/APC,LC/APC
RF Index	Operating Bandwidth	MHz	47			1002
	Input Level	dBμV	75	80		85		AGC
	Flatness	dB	-0.75			+0.75		47~1002MHz
	Return Loss	dB	16					47~1002MHz
	Input Impedance	Ω		75
	RF connector		F Metric/Imperial					Specified by user
Link Index	No. of Test Channels		PAL-D/59CH
	CNR	dB	51.0					Tx to Rx Rx -1dBm
	CTB	dB	65.0
	CSO	dB	60.0
General Index	Network Management Interface		SNMP,WEB supported
	Power Supply	V	90			265		AC
			-72			-36		DC
	Power Consumption	W				30		Dual Power Supply, 1+1 standby
	Operating Temp	ºC	-5			+65		Auto case temp control
	Storage Temp	ºC	-40			+85
	Operating Relative Humidity	%	5			95
	Dimension	mm	370×483×44					D,W,H
	Weight	Kg	4.1

 

Front Panel Instructions

S/N	Identification	Name	Remarks
1	LCD	LCD Display	To display the parameters of the transmitter
2	STATUS	Device Working Status	LED Green,Device working
			LED Red, Device faulty or alarm
3	LASER	Laser Output	Output with in normal range
			Output out of normal range
4	RF	RF Input	LED Green,Input within requested range
			LED Red,no input or out of the requested range
5	POWER	Power Supply	LED Green,Dual power supply working
			LED Yellow, Single power supply working
6		Buttons	Start menu page turning and set the device
7	ENT	Enter	Confirmation after menu page turning and device setting
8	OFF/ON	Key	ON  Laser on ,OFF Laser off
9	RF TEST	RF Test Point	RF input level -20dBμV

Rear panel Instructions

S/N	Identification	Items	Remarks
1	RF INPUT	RF Input	RF Input
2	OPT OUT	Optical Output	Optical Output
3	RS232	RS232 Port	Local programming
4	RJ45	RJ45 Port	Remote SNMP and WEB supported
5	Fan	Fan	For device cooling
6		Grounding Port	For Grounding
7	Power1	Power Socket1	Hot plug in/out supported
8	Power2	Power Socket 2	Hot plug in /out supported

 

Packing&Shipping

Package type: each pcs wth soft ,safety polyfoam ,then packed in carton.
Shipping way: it usually take 5-7 days by DHL, TNT, Fedex, UPS to arrive your local place
Company introduction

Catcast Technology Co.,Ltd is a high-tech enterprise which concentrates on the research, manufacture, sale and engineer service of digital TV headend & broadcasting equipments with 18 years history in Chengdu, China. Catcast is building up both domestic and overseas markets while making a good contribution to the TV broadcasting industry. As a TV network investor, we have accumulated a great deal of experience in network operation of cable or wireless digital TV, IPTV, DSNG system as well as transfer analog tv system to digital tv system. Upgrade CATV/MATV to IPTV system. We are always striving for innovation , and keep the principle to do business: The same product , we win the quality. The same quality, we win the price.
Why choose us