Philips FWT6600 Service Manual page 15

TECHNIAL DESCRIPTION
Microphone
See also SH 190 testing with 20 to 20k Hz filter,input leven 1mv rms(lim:1.5mv rms) Rs=600ohm output 500mW
Measurment are directly done at the coonector on the board
GENERAL PART
Measurement are directly done at the connector Microphone(mic1,mic2)
Description
Output Resistance
Output Voltage RL = 33 k ohm ( )dB, 1 Khz )
Channel Unbalanceo about( mic1 and mic2)
THD + Noise ( 0dB, 1Khz )vol max
Channel Crosstalk ( ( 0 dB, 63Hz ) )
( 0 dB, 1 KHz )
Signal to Noise Ratio ( 0dB,1kHz ) ( A - weighted )
Microphone Power output( RMS )
Microphone input leven ( Rms)
Max Hum Noise(mic vol max,main vol max)
Vol.min=vol1.(mic vol min,main vol 1)
Microphone Frequency response
volume 23,input leven 1mv rms,
connect main load
Remarks :
testing with 20 to 20k Hz filter
Class No
FWT6600/ All Version
NAME : ZC.ZENG
CHECK
1-15
at
USB SPECICFICATION
11 9
DATE :
Specification
Nom Lim Unit
N/A
N/A
1 +/- 3 dBA
6 8
%
N/A
N/A
40 35 dBA
550 +/- 20% mW
1 1.5 mV
6 8 mV
2 4 mV
±3 dB
±4 dB
ref dB
±3 dB
SH 190 -9
Ver Issued Date
1
23-Sep-11
2
3
A4