CPF118F Ver la hoja de datos (PDF) - YCL Electronics

Número de pieza

componentes Descripción

Fabricante

CPF118F

Asymmetric Digital Subscriber Line

YCL Electronics  

Product Specification

CPF118F

4.4. DC characteristic :

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

from 0mA to 80mA. 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-C

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 20MΩ.

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. :

Data sheet subject to change without notice

RDPS-POTS414(R0)09/10/2002

SHEET 7 OF 10

Share Link: