參數(shù)資料
型號: MF601F
廠商: Electronic Theatre Controls, Inc.
英文描述: Mirco Filter For ADSL CPE Side
中文描述: Mirco過濾器對于ADSL終端側(cè)
文件頁數(shù): 7/10頁
文件大?。?/td> 99K
代理商: MF601F
Product Specification
MF601F
Data sheet subject to change without notice
RDPS-MF008(R1)07/03/2002
SHEET 7 OF 10
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 to 5 Megohms. The ground point shall be local building or green wire ground.
As an objective , the dc resistance should exceed 10M
.
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.
The test setup is shown in drawing below.
:
ZL
LPF
Equipment
ZL
Phone
Line
Load#1 LPF
Load#4 LPF
Remote POTS Splitter
ZL is normal Termination
in test set
Test
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