CPF101NW 查看數據表（PDF） - YCL Electronics

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CPF101NW

Product type: ISDN/POTS splitter. System application: asymmetric digital sudscriber line.

YCL Electronics  

Product Specification

CPF101NW

4.3.3. Filter Insertion loss test For POTS Function:

4.3.3.1. Description :

Insertion loss /Attenuation mentioned herein is defined as below :

IL = 20 log 10 Vo/Vi  dB

Vi = the voltage value measured is shown in Fig. 3

Vo = the voltage value measured across the Line side shown in Fig. 4

4.3.3.2. Apparatus :

a . Function generator or equivalent

b . Readout oscilloscope or equivalent.

c . Complex load ZL =270 ohm + 750 ohm //150nF

4.3.3.3. Test procedure :

a . Set the measurement Frequency of interest

b . Connecting the source to the Phone side of splitter with the complex load

ZL=270 ohm + 750 ohm //150nF across the Line side.

c . Measure the voltage value and calculate the Insertion loss expressed in

decibel from the equation Insertion loss = 20 log10 Vo / Vi dB

d . Change another frequency of interested the repeat step a~d.

4.3.3.4. Insertion loss test set up measurement :

Fig. 3

ISDN/Phone

ZADSL

Data sheet subject to change without notice

Fig. 4

RDPS-POTS321(R1)03/15/2002

SHEET 9 OF 13

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