Philips FWT6600, Руководство по обслуживанию

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CHECK
11 9 SH 190 -9
1-12
Ver
1
DATE :
NAME : ZC.ZENG
Remarks :
testing with 20 to 20k Hz filter
USB SPECICFICATION
Issued Date Class No
A4
23-Sep-11
FWT6600/ All Version
3
2
Channel Unbalance ( 0 dB, 1 KHz ) +/- 2dB
Channel Crosstalk ( 0 dB, 1 KHz ) >= 35dB (with 1 KHz filter )
USB Measurement at Set Level
Electrical Parameters are to be measured at speaker teminals across 6 ohm load with 500mW output and DSC setting in Jazz Mode
Signal to Noise Ratio ( 0 dB, 1 KHz ) >= 55dBA ( A - weighted )
FL/FR ch
Frequency response
@±3
30HZ-10KHZ(Reference 1KHZ)
Description Specification
Channel Crosstalk ( ( 0 dB, 1 KHz ) ) >= 35dB
( 0 dB, 1 KHz ) >= 35dB
Signal to Noise Ratio ( 0dB,1kHz ) ( A - weighted ) >= 57dB( A - weighted )
30HZ-125HZ(reference 63HZ) Sub ch
THD + Noise ( 0dB, 1Khz ) <=2%
Output Resistance N/A
Output Voltage RL = 33 k ohm ( )dB, 1 Khz ) N/A
Channel Unbalance < = +/- 3 dB
TECHNIAL DESCRIPTION
USB
See also SH 190 USB/SD Audio Module (300605)
Measurment are directly done at the coonector on the board
Measurement are directly done at the connector on CDC board
Description Specification
GENERAL PART