CPF906G 데이터 시트보기 (PDF) - YCL Electronics

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CPF906G

Asymmetric Digital Subscriber Line

YCL Electronics  

Product Specification

CPF906G

4.2.3. DC characteristic :

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

currents from 0mA to 100mA. This ISDN/POTS splitter can pass ISDN/POTS tip-to-

ring dc voltages of 0V to 72V and ringing signals of 40V to 80Vrms at any frequency

from22Hz to 28Hz with a dc component in the range from 0V to 72V. The dc resistance

from tip-to-ring at the line port interface with the phone interface shorted, shall be less

than or equal to 12.5 ohms. The DC resistance from tip-to-ground and from ring-to-

ground at the ISDN/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.

4.3. Test Methodology For ISDN Function:

4.3.1. Filter insertion loss Test :

4.3.1.1. Test Equipment :

a . HP4395A Network / Spectrum / Impedance Analyzer

b . HP87512A Transmission / Reflection test set

c . Balun North Hills : 0415LB( 50Ω : 150Ω )

4.3.1.2. Test Setup: is shown in Fig.1

4.3.1.3. Test Procedure :

a . Set HP4395A in B/R mode for insertion loss test.

b . Connecting the Analyzer to the ISDN and line side of splitter through the North Hills

Balun 0415LB

c . Set frequency of interest given in specification.

d . Calibrating the HP4395A network Analyzer via the thru for attenuation test .

e . Measurement insertion loss.

0415LB

0415LB

Fig.1. Test Setup

Note : ZADSL load can be terminated with load, or open

Data sheet subject to change without notice

20.89nF

82uH

100ohm

Fig. 1-a. ZADSL Load

RDPS-POTS344(R0)04/03/2002

SHEET 7 OF 16

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