Harman Kardon AVR 7000, Руководство по обслуживанию

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TUNER Section
TUNER SECTION
Measuring methods in confirmity with IEC standard 315
Measurements condition FM : Radio frequency = 98.1MHz, Audio frequency = 1kHz
Reference level = 1mV on ( 75ohms , 300ohms )
Deviation : MONO = ?5kHz, Stereo = ?7.5kHz?.5kHz
MONO = ?0kHz, Stereo = ?0kHz?.5kHz
Test Point : TP 1 = 90.1MHz, TP 2 = 98.1MHz, TP 3 = 106.1MHz
Filter = B.P.F at STEREO
FM SECTION
NO DESCRIPTION UNIT LIMIT L/R NOMINAL L/R MEAS. NEEDED
*
1 TUNING RANGE LOW ~ HIGH MHz
87.5~107.9M
STEP AUTO/Man. kHz 100
* 2 USABLE SENSITIVITY TP 1 dBf > 17.2
> 14.2
S/N = (26,30)dB TP 2 dBf > 17.2 > 14.2
TP 3 dBf
> 17.2 > 14.2
3 FULL LIMITING SENSE OUTPUT = -3dB dBf > 15.2 > 12.2
* 4 AUTO STOP LEVEL dBf 33.2 +/- 6 33.2 +/- 5
* 5 AUTO SCAN ERROR kHz +/- 15/20
+/- 20/25
* 6 S/N RATIO MONO dB > 65 > 70
IHF-A FILTER STEREO dB > 63
> 68
* 7 TOTAL HARMONIC DISTORTION MONO % > 0.5 > 0.3
STEREO % > 0.8
> 0.5
8 (50,46)dB QUIETING SENS. MONO dBf > 23.2 > 20.2
STEREO dBf > 48.3
> 45.3
* 9 CHANNEL SEPARATION 100Hz dB > 35 > 40
1kHz dB
> 40 > 45
10kHz dB > 30
> 35
10 FREQUENCY RESPONSE AT ?1,-3dB Hz 20~15K 10~15.3K
11 SPURIOUS RESPONSE dB > 80
> 90
12 IF REJECTION TP 1 dB > 70 > 80
13 IMAGE REJECTION TP 3 dB > 65
> 70
14 AM REJECTION RATIO dB > 50 > 55
15 RF INTERMODULATION dB
16 CAPTURE RATIO dB > 25. > 2
17
ALTERNATIVE CH SELECTIVITY
?(400)kHz
dB
> 65 > 70
* 19 OUPUT LEVEL MONO mV 500 +/- 150
500 +/- 100
AM SECTION
Measuring methods in confirmity with IEC standard 315
Measurements condition AM - MW : Radio frequency = 1000/999kHz, Audio frequency = 400Hz
LW : Radio frequency = 207kHz, Audio frequency = 400Hz
Reference level = 5mV/m,10mV/m on 50ohms
Modulation = 30%
Test Point : MW TP1 = (600)kHz TP2 = (1000)kHz TP3 = (1400)kHz
LW TP1 = 162kHz, TP2 = 207kHz, TP3 = 252kHz
NO DESCRIPTION UNIT LIMIT L/R NOMINAL L/R
* 1 TUNING COVER RANGE LOW ~ HIGH MW kHz
520~1710
LW kHz
STEP AUTO/Man. kHz 10
* 2 USABLE SENSITIVITY MW TP 1 uV/m > 800 > 500
TP 2 uV/m > 800
> 500
S/N = 20dB TP 3 uV/m > 800
> 500
LW TP 1 uV/m
TP 2 uV/m
TP 3 uV/m
AVR7000 harman/kardon
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