product s pecification MF600SWE data sheet subject to change without notice rdps-mf054(r0)09/23/2002 sheet 1 of 11 file no rdps-mf054 revision r0 system application asymmetric digital subscriber line product t ype pots splitter product name MF600SWE date sep. 23 th , 2002 jay hsieh - design engineer, r&d_1 issued by jay@ycl.com.tw roger wu ? manager, r&d_1 approved by roger@ycl.com.tw issued date ycl electronics co., ltd. no.95, feng jen road. feng shan city, kaohsiung, taiwan, r.o.c. this controlled document is the property of ycl electronics co., ltd. any duplication reproduction or transmission by unauthorized parties without the prior written permission of ycl electronics co., ltd. is prohibited.
product s pecification MF600SWE data sheet subject to change without notice rdps-mf054(r0)09/23/2002 sheet 2 of 11 table of contents item description page 1 introduction ----------------------------------------------- 3 2 reference ----------------------------------------------- 3 3 abbreviations ----------------------------------------------- 4 4 technical requirements ----------------------------------------------- 5 4.1. schematic ----------------------------------------------- 5 4.2. zhp-r definition ----------------------------------------------- 5 4.3. electrical specification ----------------------------------------------- 6 4.4. dc characteristic ----------------------------------------------- 8 4.5. test methodology ----------------------------------------------- 8 4.5.1. insertion loss ----------------------------------------------- 8 4.5.2. return loss ----------------------------------------------- 9 5 environmental condition ----------------------------------------------- 10 5.1. resistibility to overvoltage and overcurrents ----------------------------------------------- 10 5.2. climatic condition ----------------------------------------------- 10 5.2.1. operating temperature ----------------------------------------------- 10 5.2.2. storage and transport ----------------------------------------------- 10 5.2.3. operating humidity 6 reliabilty conditions ----------------------------------------------- 10 6.1.thermal shock ----------------------------------------------- 10 6.2. temperature humidity exposure ----------------------------------------------- 10 6.3. vibration test ----------------------------------------------- 10 7 mechanical condition ----------------------------------------------- 11 7.1. mechanical ----------------------------------------------- 11
product s pecification MF600SWE data sheet subject to change without notice rdps-mf054(r0)09/23/2002 sheet 3 of 11 1. introduction: the MF600SWE is a splitter module that has been specifically designed to implement the functionality of low pass filter in pots over adsl application. asymmetric digital subscriber line (adsl) technology is dedicated , point to point , public network access technology that allow multiple forms of data , voice , and video to be carried over twisted-pair copper wire on the local loop between a network service provider ? s(nsp ? s) central office and the customer site or on local loops created either intra-building or intra- campus. best of all , adsl delivers this high speed performance over existing copper telephone line all while allowing traditional voice service to coexist without interruption through pots low pass filters. the pots-splitter on the customer premises side consists of a lowpass section( installed in aseparated plastic box ). the MF600SWE integrate low pass filter that block the high frequency energy from reaching the pots device and provide isolation from impedance effects of the pots device on adsl.in addition , these filter will also attenuate any wideband impulse noise generated by the pots device due to the interruption of loop current(e.g. pulse dialing or on hook / off hook transfer) because the pots splitter connects directly to the subscriber loop media , it must also provide some protection for externally induced line hits or faults which could damage any attached equipment or endanger humans interacting with the installed equipment. the circuit protection will be provided mostly by standard central office line protection means and additional protection measures built into pots splitter to protect against line overstress which could damage the splitter itself. the electrical and transmission specification is based on etsi tr 101 728 and castomer requird . 2. reference: ref. 1 : ets 300 019 environmental conditions and environmental tests for telecommunications equipment ref. 2 : etsi 101 728 network and customer installation ref. 3 : itu-t k20 resistibility of telecommunication switching equipment to overvoltages and overcurrents ref. 4 : itu-t k21 resistibility of subscribers terminal to overvoltage and overcurrents
product s pecification MF600SWE data sheet subject to change without notice rdps-mf054(r0)09/23/2002 sheet 4 of 11 3. abbreviations: adsl asymmetric digital subscriber line co central office cpe customer premise equipment. pots plain old telephone service rt remote terminal adsl-nt network termination of adsl
product s pecification MF600SWE data sheet subject to change without notice rdps-mf054(r0)09/23/2002 sheet 5 of 11 4. technical requirements : 4.1. schematic : the following drawing illustrates the schematic of this product. 4.2. zhp-r definition : to facilitate the test of the splitter , the high pass data have to be taken into consideration. capacitors of 0.1uf on the nt-side are connected in series with 0.12uf capacitors in the tip-and ring-line of the adsl-output of the splitter itself (see block diagram above). the equivalent circuit diagram of the nt-side is shown below :
product s pecification MF600SWE data sheet subject to change without notice rdps-mf054(r0)09/23/2002 sheet 6 of 11 4.3. electrical specification : the low pass filter shall satisfy the following parametric limits with a complex impedance zl shown in this table across the line side of this device . the following requirement is specified for a single splitter. electrical requirements splitter parameter range values frequency range splitter bandwidth dc to 3.4khz nominal voice band 0.3khz to 3.4khz billing tone 12khz 80hz ringing frequency 15.3hz to 68hz adsl band 30khz to 1104khz line impedance zl 270ohm + (750ohm || 150nf) co impedance ztc 270ohm + (750ohm || 150nf) rt impedance ztr 270ohm + (750ohm || 150nf) modem impedance 30khz< f< 1104khz 100 ohm operation voltage voice band nominal signal 21mvpp to 5.4 vpp billing tone 10vpp to 30.2vpp ringing signal 25hz 100vrms dc voltage 45v to 52v max. ac voltage 150vrms with -105vdc offset max. differential 320v current voice band loop current <=30ma dc resistance dc resistance <=50 ohm isolation resistance tip/ring >5 mohm voice ? band characteristic insertion loss 1004hz <1.0 db attenuation distortion(relative to 1004hz) 200hz product s pecification MF600SWE data sheet subject to change without notice rdps-mf054(r0)09/23/2002 sheet 7 of 11 electrical requirements splitter parameter range values delay distortion 300hz=14 db 3400hz=12 db from line port 300hz=14 db 3400hz=12 db longitudinal conversion loss lcl 30khz to 1mhz >50 db 1mhz to 5mhz >30 db adsl modem interface isolation voltage >2000vrms for 1 minute adsl band characteristic adsl insertion loss 26-1100khz <0.3 db stop band attenuation 32khz45 db
product s pecification MF600SWE data sheet subject to change without notice rdps-mf054(r0)09/23/2002 sheet 8 of 11 4.4. dc characteristic : all requirement of this specification can be met in the presence of all pots loop currents from 0ma to 30ma. this filter can pass pots tip-to-ring dc voltages of 45 to 52v and ringing signals of 100vrms at any frequency from15.3hz to 68hz with a dc component in the range from 45 to 52v. the dc resistance from tip-to-ring at the line port interface with the phone interface shorted, shall be less than or equal to 50 ohms for one splitter. the dc resistance from tip-to-ground and from ring-to-ground at the pots interface with the u-r interface open shall be greater than or equal to 5 megohms. the ground point shall be local building or green wire ground. as an objective , the dc resistance should exceed 20m w . 4.5. test method : 4.5.1. insertion loss : the insertion loss of a device connected into a given transmission system is defined as the ratio, expressed in db, of the load power available(before and after insertion ) delivered to the output network beyond the point of insertion at a given frequency. in general , the insertion loss of a device inserted in a given transmission system mainly caused by internal component resistive loss while all of the impedance between source , load and device interface having been matched. to perform the insertion loss measurement ,thru calibration must be done prior the testing . general insertion loss equation can be expressed as following. insertion loss = 20 log ? v2 / v1 ? db where v1 = the measured voltage value of load without lpf in circuit. v2 = the measured voltage value of load with lpf in circuit. the test setup is shown in drawing below. :
product s pecification MF600SWE data sheet subject to change without notice rdps-mf054(r0)09/23/2002 sheet 9 of 11 4.5.2. return loss : return loss measure the amount of energy that is lost due to reflection which resulted from impedance mismatching at the interface. return loss is essentially defined as the ratio of the power incident upon a given transmission system to the power reflected caused by impedance mismatch with respect to reference impedance at the interface between source and device. return loss figure are a function of the impedance of the circuit involved and are therefore frequency dependent. these impedance must be closely maintained in order to reduce the possibility of undesirable reflection and echoes which in long distance circuit the telephone user or destroy the data being sent. to perform the return loss test ,open ,short, load calibration must be done prior measurement while the lcz impedance analyzer being selected in impedance mode. return loss is general expressed in decibels. general return loss equation as below: return loss = 20 log ? z l + z m / z l - z m ? db where z l = the reference impedance z m = the measured impedance the test setup is shown in drawing below:
product s pecification MF600SWE data sheet subject to change without notice rdps-mf054(r0)09/23/2002 sheet 10 of 11 5. environmental condition: 5.1. resistibility to overvoltages and overcurrents: the splitter has to comply with requirements as per itu-t k.21. 5.2. climatic conditions: 5.2.1. operating temperature: application indoor long time operation guarantee temperature ( 5 to 40 0 c ) short time operation guarantee temperature ( 0 to 50 0 c ) ( according to ets 300 019, class 3.2 ) 5.2.2. storage and transport: low ambient temperature - 20 0 c high ambient temperature +85 0 c ( according to mil-std-202 method 107 ) 5.2.3. operation humidity: long time operation guarantee humidity ( 5 to 85 % ) short time operation guarantee humidity ( 5 to 90 % ) short time : within 72 continuous hours and 15 days in a year 6. reliability conditions: 6.1. thermal shock : temperature from -20 c to +85 c for 5 cycles (according to mil-std-202 , method 107) 6.2. temperature humidity exposure : +50 c /95rh , 96hrs (according to mil-std-202 , method 103) 6.3. vibration test : random vibration , frequency 5-500hz , sweep time :1 hr / axis / force : 2.4grams (according to mil-std-202 , method 204)
product s pecification MF600SWE data sheet subject to change without notice rdps-mf054(r0)09/23/2002 sheet 11 of 11 7 . mechanical condition : 7.1. mechanical : note : unit : mm
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