Tuner Section - Harman Kardon AVR7000 Preliminary Service Manual

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