CATV Optical Transmitter 1550nm External Modulation

• Interface Type: Sc/APC,LC/APC,FC/APC
• Feature: 1550nm External Modulation
• Output: 1 or 2 Port
• Operation Wavelength: 1540~1563nm
• Power: 90~265VAC or -48VDC
• Size: 19′′x14.5′′x1.75′′
• Model NO.: DT-OTEM1500
• Work Bandwidth: 47-862 MHz
• Output Power: 2 X 7 dBm
• Transport Package: 1 PC/CTN
• Specification: CE; RoHs; IOS
• Trademark: Daytai
• Origin: Zhejiang, China(Mailand)
• Production Capacity: 1200 Set/Sets Per Month

Product Description

1. DESCRIPTION OF CATV Optical Transmitter 1550nm External Modulation
* Optical Transmitter
* 1550nm External Modulation
* Output: 1 or 2 port
* Output Power:3dBm,5dBm,6dBm,7dBm,8.5dBm...is optional
* Operation Wavelength:1540~1563nm
* CNR≥52dB,CTB≤-65dB,CSO≤-65dB,SBS:13,16,18dBm Adjustable
* Work Bandwidth:47~862,1000,1080MHz is Optional
* Connector:SC/APC,LC/APC,FC/APC is Optional
* Power :90~265VAC or -48VDC
* Size:19''x14.5''x1.75''

2. FEATURE OF CATV Optical Transmitter 1550nm External Modulation
* High performance: Externally modulated technology for optical transmitter, no laserchirp, low dispersion distortion, high extinction ratio, with excellentcharacteristic within 40~862MHzin-band.
* Narrow bandwidth(Typ.=1MHz),lower noise, DFB continuous wave laser.
* The operating bandwidth of optical transmitter is up to 47~1080MHz.
* Perfect index: Unique innovation technology, provide excellent CNR, CTB, CSO&SBS.
* ITU standard wavelength adjustable, the user can adjust and set the laserwavelength on the front-panel with ±0.05nm stepping in the range of ±200GHz(±1.6nm),used in the network upgrading and expansion of WDM system.
* AGC/MGC MODE IS OPTIONAL AT SPOT. OMI can be optimized at spot.
* Perfect RS232 communication interface.
* SNMP network management function optional.
* 1+1 backup power supply optional.
* Casing temperature auto-control.
* Excellent Price-Performance.

3. MAIN APPLICATION OF CATV Optical Transmitter 1550nm External Modulation
* Used in middle and small CATV center head end, solve thetransmission of trunk and distributive network with high quality and low cost.
* Usedin second-grade service area of sub-station. With excellent price-performance, providesecond-grade users with high quality and high reliability value added servicesuch as RFTV, IPTV, VOD and so on. It can avoid the limitation on transmissionbandwidth and distance as well as system CSO deterioration caused by laserchirp for adoption 1550nm direction modulated optical transmitter.

4. TEST CONDITION
CNR1: Txto Rx, 0dBm receiving.
CNR2:16dBm EDFA (NF4.5~5.5dB), 65km fiber, 0dBm receiving.

5. PRODUCT PERFORMANCE

Performance			Index		Supplement
Optic feature	Operating wavelength	(nm)	1540~1563		DT-OTEM1500C
			ITU-TG.692		DT-OTEM1500U
	Wavelength ADJ. range	(nm)	±1.6 (±200GHz)		DT-OTEM1500U
	Wavelength ADJ. mode		±0.05nm stepping		DT-OTEM1500U
	Line width	(MHz)	≤1.0		FWHM(Δλ)
	Side mode suppression ratio	(dB)	≥45		SMSR
	Equivalent noise intensity	(dB/Hz)	≤-160		RIN (20~1000MHz)
	Output power	(dBm)	2×7		Optional 2×3, 2×6, 2×9
	Return loss	(dB)	≥60
	optical fiber connector		SC/APC		Optional LC/APC,FC/APC
RF feature	Work bandwidth	(MHz)	47-862		47~1000,47~1080 optional
	Input level	(dBmV)	18~28		AGC
	Flatness	(dB)	≤±0.75		47~862MHz
			≤±1.5		862~1000MHz (Optional)
	Return loss	(dB)	>16
	Input impedance	(Ω)	75
	RF port		F-Female
Link feature	Transmit channel		PAL-D/60CH	PAL-D/99CH
	CNR1	(dB)	≥53.0	≥51.5	Back to back
	CNR2	(dB)	≥51.5	≥50.0	65Km optical fiber, 0dBm receive
	CTB	(dB)	≤-65	≤-65
	CSO	(dB)	≤-65	≤-65
	SBS restrain	(dBm)	13, 16, 181		Adjustable
General feature	SNMP network management interface		RJ45
	Communication interface		RS232
	Power supply	(V)	90~265VAC		-48VDC optional
	Power Consume	(W)	≤50		Single power works
	Work temp.	(°C)	0~50		Machine temp. control automatically
	Storage temp.	(°C)	-40~85
	Operating relative humidity	(%)	5~95
	Size	(")	19×14.5×1.75		(W)x(D)x(H)

* Remark: 1.SBS=18dBm, EDFA 18dbm outputfiber, port to port <40km
 
6. PRODUCT MODEL

Model	Output Power(dBm)	Operating wavelength (nm)	SBS Restrain (dBm)	System index (59 routes PAL-D)
				CNR1	CNR2	CTB	CSO
DT-OT1523C	Dual fiber 2×3	1540~1563	13, 16, 18 Adjustable	≥53	≥50.5	≤-65	≤-65
DT-OT1525C	Dual fiber 2×5			≥53	≥51	≤-65	≤-65
DT-OT1526C	Dual fiber 2×6			≥53	≥51.5	≤-65	≤-65
DT-OT1527C	Dual fiber 2×7			≥53	≥51.5	≤-65	≤-65
DT-OT1529C	Dual fiber 2×8.5			≥53	≥51.5	≤-65	≤-65
DT-OT1523U	Dual fiber 2×3	1528~1563nm ITU wavelength ADJ.		≥53	≥50.5	≤-65	≤-65
DT-OT1525U	Dual fiber 2×5			≥53	≥51	≤-65	≤-65
DT-OT1526U	Dual fiber 2×6			≥53	≥51.5	≤-65	≤-65
DT-OT1527U	Dual fiber 2×7			≥53	≥51.5	≤-65	≤-65
DT-OT1529U	Dual fiber 2×8.5			≥53	≥51.5	≤-65	≤-65