CPF107J 데이터 시트보기 (PDF) - YCL Electronics

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CPF107J

Asymmetric Digital Subscriber Line, POTS Splitter For ADSL CPE side

YCL Electronics  

4.6. Test method :

Product Specification

CPF107J

4.6.1. Insertion loss :

For each of the test loops specified in above and using the test set-up shown in Figure 1

the insertion loss from the source to the termination shall be measured with and without

the splitter/ ZHP-r combination inserted.The increase in insertion loss at 1000 Hz on any

of the test loops, due to the addition of the Splitter/ZHP-r shall be less than specified in

Electrical Specification table.

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. :

Figure 1

ZT

(600ohm)

Remote POTS Splitter

TEST

loop

( load )

LPF

xDSL

ZHP-r

(Load)

TEST

equipment

ZTr

(600ohm

ZTr is the normal

Termination in test set

Note : ZHP-r is the impedance presented to the POTS connection by an ATU-R

Data sheet subject to change without notice

RDPS-POTS415(R1)09/19/2002

SHEET 7 OF 10

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