Product Specification

MF602F

Data sheet subject to change without notice

RDPS-MF017(R1)03/04/2002

SHEET 7 OF 11

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 105V

and ringing signals of 40V to 150Vrms at any frequency from15.3Hz to 68Hz with a DC

component in the range from 0V to 105V. The dc resistance from tip-to-ring at the line port

interface with the phone interface shorted, shall be less than or equal to 15 ohms for one

splitter.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 to5 Megohms. The ground point

shall be local building or green wire ground. As an objective , the DC resistance should

exceed 10M

Ω.

4.4 : Test method :

4.4.1 : 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 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 3. For

measuring POTS band insertion loss for single filter module also a single filter wit four

added parallel load filters.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.

ZL

LPF

Equipment

ZL

Phone

Line

Load#1 LPF

Load#4 LPF

Remote POTS Splitter

ZL is normal Termination

in test set

Test