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product s pecification MF601BE data sheet subject to change without notice rdps-mf055(r0)09/30/2002 sheet 1 of 11 file no rdps-mf055 revision r0 system application mirco filter for adsl cpe side product t ype micro filter product name MF601BE date sep. 30 th , 2002 bert lin - design engineer, r&d_1 issued by bert @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 county, 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 MF601BE data sheet subject to change without notice rdps-mf055(r0)09/30/2002 sheet 2 of 11 table of contents item description page 1. introduction ----------------------------------------------- 3 2. compatibility ----------------------------------------------- 3 3. references ----------------------------------------------- 4 4. abbreviations ----------------------------------------------- 4 5. technical requirements ----------------------------------------------- 5 5.1. schematic ----------------------------------------------- 5 5.2. zhp-r definition ----------------------------------------------- 5 5.3. electrical specification ----------------------------------------------- 6 5.4. dc characteristics ----------------------------------------------- 8 5.5. test methods ----------------------------------------------- 8 5.5.1 . off-hook insertion loss ----------------------------------------------- 8 5.5.2 . return loss ----------------------------------------------- 9 5.5.2.1. complex* return loss with atu-r ----------------------------------------------- 9 5.5.2.2. 600 ohm return loss with atu-r ----------------------------------------------- 9 6 environmental condition ----------------------------------------------- 10 6.1. resistibility to overvoltage and overcurrents ----------------------------------------------- 10 6.2. climatic condition ----------------------------------------------- 10 6.2.1. operating temperature ----------------------------------------------- 10 6.2.2. storage and transport ----------------------------------------------- 10 4.2.3. operating humidity ----------------------------------------------- 10 7 reliabilty conditions ----------------------------------------------- 10 7.1.thermal shock ----------------------------------------------- 10 7.2. temperature humidity exposure ----------------------------------------------- 10 7.3. vibration test ----------------------------------------------- 10 8. mechanical conditions ----------------------------------------------- 11 8.1. mechanical ----------------------------------------------- 11 8.2. connector information ----------------------------------------------- 11
product s pecification MF601BE data sheet subject to change without notice rdps-mf055(r0)09/30/2002 sheet 3 of 11 1. introduction: the in-line micro filter has been specifically designed to implement the functionality of low pass filter in g.lite system . g.lite technology is similar to full rate adsl in using dmt technology but operates at a lower data rate of up to 1.5mbps downstream and 512kbps upstream ,depending on line conditions and lengths.adsl lite is proposed as a lower speed version of adsl that will eliminate the need for telecom to install and maintain a premises based pots splitter. it was found necessary to include one or more low pass filters in series with the pots terminals in order to reliably achieve maximum data rates. for pots voice band service , the low pass filter provide protection from adsl signal which may impact through non-line or other effects remote devices(handset, fax, voice band modem etc)and central office operation . for adsl signal , it also provide protection from the high frequency transient and impedance effect that occur during pots operation(ringing transients , on-hook,off-hook transient and so on). 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. 2. reference: ref. 1 : ets 300 001 attachment to public switched telephone network ref. 2 : ansi t1e1.4 g.992.2 network and customer installation interface 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 MF601BE data sheet subject to change without notice rdps-mf055(r0)09/30/2002 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 4. abbreviations: adsl as ymmetric digital subscriber line co central office cpe customer premise equipment. pots plain old telephone service rt remote terminal dsl-nt network termination of adsl
product s pecification MF601BE data sheet subject to change without notice rdps-mf055(r0)09/30/2002 sheet 5 of 11 5. technical requirements: 5.1. schematic: the following drawing illustrates the schematic of this product. 5.2. zhp-r definition: to facilitate testing of the single in-line filter independently of the actual modem or specific vendor, zhp-r is defined to allow proper termination of the adsl port during voice band testing. the zhp-r is valid only for voice band frequency. the combination of capacitors in the zhp-r is only representative. the input shall be 27 nf however derived. zhp-r equivalent circuit is shown below. 0.056 uf 0.056 uf 0.47 mh 100 ohms
product s pecification MF601BE data sheet subject to change without notice rdps-mf055(r0)09/30/2002 sheet 6 of 11 5.3. electrical specification: the low pass filter shall satisfy the following parametric limits shown in this table across the line side of this device. electrical requirements splitter parameters range values splitter bandwidth dc to 4 khz nominal voice band 0.3 khz to 3.4 khz ringing frequency 15.3 hz to 68 hz adsl band 30 khz to 1104 khz line impedance z l 300 hz to 3.4 khz 600 ohms line impedance znl-r 300 hz to 3.4 khz 1330 ohm // (348 ohm + 0.1 m f) modem impedance 30 khz to 1104 khz 100 ohms operation voltage voice band nominal signal 21 mvpp to 5.4 vpp ringing signal 40 vrms to 150 vrms ( 113 vpp to 424 vpp ) dc voltage 0 v to 105 v max. ac voltage 150 vrms with ? 105 vdc offset max. differential 320 v operation current voice band loop current < 100 ma dc resistance dc resistance tip to tip and ring to ring < 50 ohms isolation resistance tip to ring > 10 mohms differential input blocking impedance 20 khz > 2 kohms 30 khz > 3 kohms 5 mhz to 10 mhz > 2 kohms line side 10 mhz to 400 mhz n / a voice band characteristics insertion loss between 600 ohms resistive single filter 1004 hz < 0.7 db with 5 filters 1004 hz < 1.0 db
product s pecification MF601BE data sheet subject to change without notice rdps-mf055(r0)09/30/2002 sheet 7 of 11 electrical requirements splitter parameters range values attenuation distortion between 600 ohms resistive single filter 200 to 3.4 khz < 1.0 db attenuation distortion between 600 ohms resistive with 5 filters 200 to 3.4 khz < 5 db srl-l > 23 db erl > 23 db 600 ohms return loss single filter srl-h > 23 db srl-l > 20 db erl > 13.5 db 600 ohms return loss with 5 filters srl-h > 7 db srl-l > 26.5 db erl > 17 db complex* znl-r return loss single filter srl-h > 9 db srl-l > 15 db erl > 8 db complex* znl-r return loss with 5 filters srl-h > 2 db * 1330 ohms in parallel with the series connection of a 348 ohms resistor and a 100 nf capacitor 200 hz to 1 khz > 58 db longitudinal conversion loss ( lcl ) 1 khz to 3 khz > 53 db delay distortion 200hz to 4 khz < 100 m s 2nd > 57 db inter-modulation distortion 3nd > 60 db adsl band characteristics 40 khz > 45 db common mode rejection 1.1 mhz > 45 db adsl band attenuation 30 khz > 24 db 1 mhz > 65 db
product s pecification MF601BE data sheet subject to change without notice rdps-mf055(r0)09/30/2002 sheet 8 of 11 5.4. dc characteristics : all requirements of this specification can be met in the presence of all pots loop currents from 0 ma to 100 ma. this single in-line filter can pass pots tip-to-ring dc voltages of 0 v to 105 v and ringing signals of 40 vrms to 150 vrms at any frequencies from 15.3 hz to 68 hz superimposed on dc voltages in the range from 0 v to 105 v. 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 filter. the dc resistance from tip-to-ground and from ring-to- ground at the phone interface with the line interface open shall be greater than or equal to 10 megohms. the ground point shall be local building or green wire ground. as an objective, the dc resistance should exceed 10 m w . 5.5. test methods : 5.5.1. off-hook 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 is defined as the ratio, expressed in db of the power delivered to a load with the circuit in place and the power delivered to a load without the circuit in place. the added insertion loss shall be measured using the test up in figure 2. for measuring pots band insertion loss for single filter module also for single filter with four added parallel load filters. general insertion loss equation can be expressed as follows. 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. figure 2.
product s pecification MF601BE data sheet subject to change without notice rdps-mf055(r0)09/30/2002 sheet 9 of 11 5.5.2. 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 lcr impedance analyzer being selected in impedance mode. return loss is general expressed in decibels. general return loss equation is as follows. 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. 5.5.2.1. complex* return loss with atu-r : figure 3. 5.5.2.2. 600 ohm return loss with atu-r : figure 4. znl-r definition:
product s pecification MF601BE data sheet subject to change without notice rdps-mf055(r0)09/30/2002 sheet 10 of 11 6. environmental conditions: 6.1. resistibility to overvoltages and overcurrents: the splitter has to comply with requirements as per itu-t k.21. 6.2. climatic conditions: 6.2.1. 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 ) 6.2.2. storage and transport: low ambient temperature - 20 0 c high ambient temperature +85 0 c ( according to mil-std-202 method 107 ) 6.2.3. 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 7. reliability conditions: 7.1. thermal shock : temperature from -20 c to +85 c for 5 cycles (according to mil-std-202 , method 107) 7.2. temperature humidity exposure : +50 c /95rh , 96hrs (according to mil-std-202 , method 103) 7.3. 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 MF601BE data sheet subject to change without notice rdps-mf055(r0)09/30/2002 sheet 11 of 11 8. mechanical conditions : 8.1. mechanical : note : unit : mm 8.2. connector information : position type tip ring phone bg socket 3 4 line bg plug 3 4 adsl rj11 jack p3 p4

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