Agilent Technologies Switch/Measure Uživatelský manuál stáhnout pdf (Strana 29)

Static reference sensitivity level

Purpose of measurements—what it proves

Sensitivity is the most significant in-channel receiver test. The sensitivity test

proves that the receiver can receive, demodulate, and decode a very low-level

signal. Every base station manufacturer does this test. This test also proves

adjacent time slot rejection. The two adjacent time slots are required to have a

50 dB level above the time slot under test.

Theory in pictures

Graphical view of limits and specifications

Channel Type Error Parameter Limit Value %

RACH FER 0.5

TCH/F9.6 BER 0.001

TCH/FS FER 0.1α

Class Ib RBER 0.4/α

Class II RBER 2

Input signal in frequency domain

TS0 TS1 TS2

50 dB

Input signal in time domain

1 2 ... 24 25 26 27 28 29 30 31 32 33 34 35 36

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Agilent Technologies Switch/Measure Uživatelský manuál Strana 29