MF608B データシートの表示（PDF） - YCL Electronics

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MF608B

Asymmetric Digital Subscriber Line

YCL Electronics  

Product Specification

MF608B

4.3. DC characteristic :

All requirement of this specification can be met in the presence of all POTS loop currents

from 0mA to 100mA. This in line filter can pass POTS tip-to-ring dc voltages of 0V to 100V

and ringing signals of 40V to 100Vrms at any frequency from15.3Hz to 68Hz with a dc

component in the range from 0V to 100V. 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. 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 10MΩ.

4.4. ZHP-r Definition:

To facilitate testing of the 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 27nF however derived. ZHP-r

equivalent circuit is shown below.

Data sheet subject to change without notice

RDPS-MF036(R4)02/26/2003

SHEET 7 OF 11

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