P/N: AD-8039J

Figure E-22 Test loop definition

E.4.3.1.2

Attenuation Distortion in Voice-Band Variation

The variation of insertion loss value form that measured with 1kHz shall be measured using the test set-up in Figure E-20

and Figure E-21. The attenuation of the POTS splitter between 0.2 and 3.4 kHz should be less than ±1.0 dB and between

3.4 and 4.0 kHz should be less than ±1.5dB

E.4.3.1.3

Delay Distortion

The increase in the delay distortion cause by the POTS splitter shall be as follows.

0.6 – 3.2 kHz: maximum of 200 µs

0.2 – 4.0 kHz: maximum of 250 µs

The delay distortion of the POTS splitter shall be measured using Figure E-20 and Figure E-21

E.4.3.1.4

Return Loss

Figure E-23 defines the configuration and the values of the test components that shall be used for impedance

measurements in the voice band for both the CO and R POTS splitter units. The return loss of each splitter under the

specified conditions shall be as follows

11dB(0.2 – 1.5 kHz)

10dB(1.5 – 2.0 kHz)

9dB(2.0 – 3.4 kHz)

Test

POTS splitter

0.12uF

LPF

U-x

PSTN

ZHP-x

equipment

xDSL

Return loss referce impedance

(Used only at co termintion)

ZNL-x

ZNL-x

POTS

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