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product s pecification MF604F data sheet subject to change without notice rdps-mf050(r0)08/27/2002 sheet 1 of 12 file no rdps-pots050 revision r0 system application asymmetric digital subscriber line product t ype micro filter for south africa product name MF604F date aug. 27 th , 2002 sundi lin - design engineer, r&d_1 issued by sundi @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 MF604F data sheet subject to change without notice rdps-mf050(r0)08/27/2002 sheet 2 of 12 table of contents item description page 1. introduction ----------------------------------------------- 3 2. reference ----------------------------------------------- 3 3. abbreviations ----------------------------------------------- 4 4. technical requirements ----------------------------------------------- 4 4.1. schematic ----------------------------------------------- 4 4.2. electrical specification ----------------------------------------------- 5 4.3. dc characteristic ----------------------------------------------- 7 4.4. z adsl definition ----------------------------------------------- 7 4.5. test method ----------------------------------------------- 8 4.5.1. insertion loss test setup ----------------------------------------------- 8 4.5.3. return loss from line side test setup ----------------------------------------------- 9 4.5.4. return loss from phone side test setup ----------------------------------------------- 10 5 environmental condition ----------------------------------------------- 11 5.1. resistibility to overvoltage and overcurrents ----------------------------------------------- 11 5.2. climatic condition ----------------------------------------------- 11 5.2.1. operating temperature ----------------------------------------------- 11 5.2.2. storage and transport ----------------------------------------------- 11 5.2.3. operating humidity ----------------------------------------------- 11 6 reliabilty conditions ----------------------------------------------- 11 6.1.thermal shock ----------------------------------------------- 11 6.2. temperature humidity exposure ----------------------------------------------- 11 6.3. vibration test ----------------------------------------------- 11 7. mechanical condition ----------------------------------------------- 12 7.1. dimension ----------------------------------------------- 12 7.2. connector information ----------------------------------------------- 12
product s pecification MF604F data sheet subject to change without notice rdps-mf050(r0)08/27/2002 sheet 3 of 12 1. introduction: the MF604F is a ? in ? line ? ( or distributed ) filter 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 allows 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 within intra-campus / intra-building networks. 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 MF604F integrates low pass filter that blocks the high frequency energy from reaching the pots device and provides isolation from impedance effects of the pots device on adsl. in addition , this 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 filter connects directly to the subscriber loop media , it must 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 filter to protect against line overstress which could damage the filter itself. 2. reference: ref. 1 : etsi tr 101 728 attachment to public switched telephone network ref. 2 : itu-t g992.1 asymmetric digital subscriber line (adsl) transceiver ref. 3 : k21 resis tibility of subscribers terminal to overvoltages and overcurrents.
product s pecification MF604F data sheet subject to change without notice rdps-mf050(r0)08/27/2002 sheet 4 of 12 3. abbreviations: adsl asymmetric digital subscriber line co central office cpe customer premise equipment. pots plain old telephone service rt remote terminal 4. techni cal requirements: 4.1. schematic: the following drawing illustrate the schematic of this product.
product s pecification MF604F data sheet subject to change without notice rdps-mf050(r0)08/27/2002 sheet 5 of 12 4.2. electrical specification : electrical requirements splitter parameter range values frequency range splitter bandwidth dc to 16khz nominal voice band 0khz to 4khz ringing frequency 17hz , 25hz adsl band 26khz to 1104khz line impedance zl 270ohm + (750ohm // 150nf) co impedance ztc 270ohm + (750ohm // 150nf) rt impedance ztr 270ohm + (750ohm // 150nf) modem impedance 26khz< f< 1104khz 100 ohm operation voltage voice band nominal signal 21mvpp to 5.4 vpp ringing signal 35vrms to 75vrms dc voltage 0v to 78v max. ac voltage 25hz < f <50hz 100vrms with78vdc offset current voice band loop current <=125ma transient current(on/off hook) <=125ma dc resistance dc resistance <=25 ohm isolation resistance between any wire and earth >25 mohm isolation resistance between wires at 200vdc >25mohm voice ? band characteristic delay distortion 200hz product s pecification MF604F data sheet subject to change without notice rdps-mf050(r0)08/27/2002 sheet 6 of 12 electrical requirements splitter parameter range values insertion loss 1khz <=1.0 db attenuation distortion 200hz12 db z adsl z r / z sl z r / z sl return loss at the line / pots port 3.4khz ? 4khz >8 db z adsl z r / z sl z r / z sl voice-band characteristic for four filters insertion loss 1 khz <1.0 db z adsl z r / 600 z r / 600 attenuation distortion 200hz ? 4khz <1.0 db z adsl z r / 600 z r / 600 300hz ? 3.4khz >12 db z adsl z r / z sl z r / z sl return loss at the line / pots port 3.4khz ? 4khz >8 db z adsl z r / z sl z r / z sl line side impedance of the filter at adsl freq. 32khz ? 1100khz <1 k w --- --- z rhf electrical requirements splitter parameter range values longitudinal conversion loss lcl 25k, 50k, 100 k, 200k ,1100k >=40 db adsl band characteristic stop band attenuation 32khz< f <1100khz >=55 db note : z rhf : 120 ohm + [ ( 150 ohm // 47nf ) + ( 750 ohms // 150nf ) ]
product s pecification MF604F data sheet subject to change without notice rdps-mf050(r0)08/27/2002 sheet 7 of 12 4.3. dc characteristic : all requirement of this specification can be met in the presence of all pots loop currents from 0ma to 125ma. this in line filter can pass pots tip-to-ring dc voltages of 0v to 78v and ringing signals of 35vrms to 75vrms at any frequency from17hz and25hz with a dc component in the range from 0v to 78v. the dc resistance from tip-to-ring at the line port interface with the phone interface shorted, shall be less than or equal to 25 ohms. 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 25m w . 4.4. z adsl definition: to facilitate testing of the in-line filter independently of the actual modem or specific vendor, z adsl , is defined to allow proper termination of the adsl port during voice band testing. the z a dsl is valid only for voice band frequency. the combination of capacitors in the z adsl is only representative. the input shall be 27nf however derived. z adsl equivalent circuit is shown below.
product s pecification MF604F data sheet subject to change without notice rdps-mf050(r0)08/27/2002 sheet 8 of 12 4.5. test method : 4.5.1. insertion loss test setup : 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 is 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 : note : z r = 270 ohm + ( 750 ohm // 150nf )
product s pecification MF604F data sheet subject to change without notice rdps-mf050(r0)08/27/2002 sheet 9 of 12 4.5.2 . return loss from line side test setup : return loss measures the amount of lost energy due to reflection resulted from impedance mismatching at the interface. return loss is essentially defined as the ratio of the incident power upon a given transmission system to the reflective power caused by impedance mismatch with respect to reference impedance at the interface between source and device. return loss figure is a function of the impedance of the circuit involved and therefore frequency dependent. these impedance must be closely maintained in order to reduce the possibility of undesirable reflection and echoes which results from long distance circuit of the telephone user and may destroy the data being sent. to perform the return loss test , open ,short and 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 is listed: 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: note : z sl =82 ohm + ( 600 ohm // 68 nf ) note : z r = 270 ohm + ( 750 ohm // 150nf )
product s pecification MF604F data sheet subject to change without notice rdps-mf050(r0)08/27/2002 sheet 10 of 12 4.5.3 . return loss from phone side test setup : return loss measures the amount of lost energy due to reflection resulted from impedance mismatching at the interface. return loss is essentially defined as the ratio of the incident power upon a given transmission system to the reflective power caused by impedance mismatch with respect to reference impedance at the interface between source and device. return loss figure is a function of the impedance of the circuit involved and therefore frequency dependent. these impedance must be closely maintained in order to reduce the possibility of undesirable reflection and echoes which results from long distance circuit of the telephone user and may destroy the data being sent. to perform the return loss test , open ,short and 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 is listed: 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: note : z sl : = 82 ohm + ( 600 ohm // 68nf ) note : z r = 270 ohm + ( 750 ohm // 150nf )
product s pecification MF604F data sheet subject to change without notice rdps-mf050(r0)08/27/2002 sheet 11 of 12 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 MF604F data sheet subject to change without notice rdps-mf050(r0)08/27/2002 sheet 12 of 12 7. mechanical condition: 7.1. dimension : note: unit : mm 7.2. connector information: position type tip ring phone rj11 jack 3 4 line rj11 plug 3 4

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