CPF120A 데이터 시트보기 (PDF) - YCL Electronics

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CPF120A

Asymmetric Digital Subscriber Line(POTS Splitter For ADSL CPE side)

YCL Electronics  

Product Specification

CPF120A

4.6.3. Return Loss :

4.6.3.1. Description :

The return loss of each splitter under the specified conditions, either with or without the

ZHP attached, shall be greater than the value specified in Table 3 :

Description

RT splitter

RT splitter

Zref

ZNL-r

ZNL-r

Table 3

Splitter return loss

Zterm ERL SRL-L

(Ω) (dB) (dB)

900

6

5

900

N/A

N/A

SRL-H

(dB)

Comments

3

2 Single freq.

4.6.3.2. Test configuration :

Figure 4 define the test configuration and the value of the test components that shall

be used for impedance measurement in the voiceband for both the central office and

remote POTS splitter units.

900ohm

2.16uF

Note :

Real cable

Line

POTS

Splitter

Test

Equipment

Phone

ADSL port

ZHP-r

ZNL-r

Figure 4

1 : HP 4395A Analyzer or equivalent.

2 : Test fixture :HP87512A test fixture.

3 : DLS400 ADSL wireline simulator.

Where:

ZNL-r = 1330Ω in parallel with the series connection of a 348Ω resistor and a 100nF

Capacitor ( long loop model seen from RT)

ZHP-r = the impedance presented to the POTS connection by an ATU-r

Data sheet subject to change without notice

RDPS-POTS342(R3)09/11/2002

SHEET 11 OF 14

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