BKtel - Experts in Optical Networks

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BaalFTTx - Series

Fx-ES10XL

OPTICAL TRANSMITTER 1550 NM

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Application

Externally modulated 1550 nm DFB laser transmitter for electrical to optical conversion of multichannel CATV signals like AM-VSB, FM and QAM signals
Enables the usage of optical amplifiers (EDFAs) as boosters or repeaters in order to realize large scale HFC networks
Excellent performance in order to realize links exceeding 100 km

Features

Low noise, narrow linewidth CW-DFB laser
ITU-Grid wavelength
Wavelength adjustable +/- 100 GHz
Electrooptical modulator with 2 optical outputs
Automatic load control (ALC) for CATV signals input
Adgustable RF slope
> 2 x 10 dBm output power (Fx-ES10XL-100)
Adjustable SBS threshold up to 19 dBm to increase transmission distance
Front panel RF test point –20 dB
Dual, hot-plug-in power supply modules for 100... 240 VAC, +/- 36 ... +/-72 VDC or
23.5 ... 24.5 VDC
Web and SNMP Interface (a-version)
RS485/232 interface (b-version)
LC display and LED status indication
General purpose I/O interface for remote functions
Very thin, only 1 U design for mounting into 19”, ETSI or JIS racks

Block Diagram

Technical Data
General	Unit
Optical Connector		Any type of high return loss connectors front or rear side mounted
Optical fiber		standard single mode 9/125 µm
RF-connector		F-female, front or rear side mounted
Control interface		a-version: Ethernet 10/100 interface:, b-version: RS485/232 interface
Power supply types (Dual redundant, hot pluggable)		100...240 VAC, 50/60 Hz +/- 36...+/- 72 VDC or 23.5...24.5 VDC
(Real) Power consumption	[W]	< 56 / 63 (1/2 power supply unit(s) equipped)
Enlosure		19” / 1 rack unit [U] (optionally compatible to ETSI or JIS standards)
Weight	[kg]	~ 9.0 (depend on power supply)
Safety		EN 60950, Laser class 1M according IEC 60 825-1 (eyesafe for normal viewing)
EMC		EN50083-2
Climatic specification Operation Storage		ETS 300 019, class 3.1 ETS 300 019, class 1.2

Optical Properties	Unit	Fx-ES10-XL-60	FX-ES10-XL-85	Fx-ES10-XL-100
Wavelength	[nm]	1548...1560 or ITU grid ch 23...37
Side mode suppression	[dB]	> 30
Wavelength adjustment range	[GHz]	-100, -50, 0, 50, 100
Optical power	[dBm]	2 x 6.0min.	2 x 8.5 min.	2 x 10.0 min.
Relative intensity noise for CATV (for optical fiber return loss > 40 dB)	[dBc/ Hz ]	< -158 (typ. < -160)
SBS-Suppression	[dBm]	Threshold adjustable between +13 and +19 dBm
Laser linewidth (typical)	[MHz]	0.3
RF frequency range	[MHz]	47...1000

Electrical Properties	Unit
Flatness	[dB]	<±0.75 (47...860 MHz) <±1.5 (860 MHz...1 GHz)
Nom. Input level per TV channel	[dBµV]	80
Input level range (per carrier)	[dBµV]	78...96 (for OMI = 5 % per CATV carrier)
True rms input level range	[dBm]	-16...+2 (for ALC correctly working)
Slope range	[dB]	-2 (cable equivalent) ... -8 (cable equalization)
RF impedance	[Ω]	75
Return loss	[dB]	> 20 (@ 47 MHz) - 1.5 dB/octave, minimum > 15
RF monitor output level	[dB]	-20 (+0.2 ... -0.8 dB @ 862 MHz, -1.3 dB @ 1GHz)

Performance Characteristics Transmitter version	Unit	C42	D84	N77
Channel allocation plan for test		CENELEC 42	PAL-D 84	NTSC 77
number of channels TV / FM (-4dB) / QAM64 (-10dB)		42 / 0 / 0	84 / 0 / 0	77 / 0 / 0
Noise bandwidth	[MHz]	5	5	4
CNR Tx/Rx	[dB]	55.5	52.5	53.5
CNR Link 1	[dB]	55.0	52.0	53.0
CNR Link 2	[dB]	53.0	50.5	52.0
CNR Link 3	[dB]	50.5	49.0	50.0
CSO Tx/Rx and Link 1	[dBc]	65	65	65
CSO Link 2	[dBc]	63	65	65
CSO Link 3 at output #1	[dB]	62	63	65
CTB	[dBc]	65	65	65

     RX with 7 pA/√Hz input noise current density
     EDFAs with 5dB noise figure
     RF input level at 80 dBuV / TV channel

Ordering information
For more information on this product please contact BKtel communications. Properties for ordering optical transmitter Fx-ES10XL
Optical output power	60 85 100	+6.0 dBm +8.5 dBm +10.0 dBm
Freyuency plan *)	C42 N77 PAL84	Cenelec 42 NTSC 77 PAL 84
NMS-Interface	A B	HTTP/SNMP Ethernet RS485
Wavelength	X 15xx.xx	1548...1560 15xx.xx ITU wavelength
Optical connector	1 2 3 4 5	E2000 SC/APC FC/APC-NTT FC/APC_JDS SC/APC with shutter
RF input / optical output	F R	on front side on rear side
Version	0 OEM	BKtel OEM
Power supply	230/230 48/48 230 48 24 230/48	2 x (100...240 VAC) 2 x (36...72 VDC) 1 x (100...240 VDC) 1x (36...72 VDC) 1 x (23.5...25.5 VDC) mixed 230 VAC / 48 VDC
Power Plug	0 Eu US Sw UK Jp Ch	No power cable included Europe (Germany, Spain ...) USA Switzerland UK, Ireland Japan China
*) Other frequency plan on request

Available ITU grid wavelengths
ITU Grid Ch. No.	DWDM Wavelength	ITU Grid Ch. No.	DWDM Wavelength
23	1558.98 nm	31	1552.52 nm
24	1558.17 nm	32	1551.72 nm
25	1557.36 nm	33	1550.92 nm
26	1556.55 nm	34	1550.12 nm
27	1555.75 nm	35	1549.32 nm
28	1554.94 nm	36	1548.51 nm
29	1554.13 nm	37	1547.72 nm
30	1553.33 nm
Other wavelengths on request!

BKtel communications GmbH - www.bktel.com - E-Mail: info@bktel.com
Specifications subject to change without notice