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参数资料
| 型号： | MF602F |
| 厂商： | Electronic Theatre Controls, Inc. |
| 英文描述： | Mirco Filter For ADSL CPE Side |
| 中文描述： | Mirco过滤器对于ADSL终端侧 |
| 文件页数： | 7/11页 |
| 文件大小： | 56K |
| 代理商： | MF602F |
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
.
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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