Sangean MMR-77, Service Manual

Page: 2 / 28

SPECIFICATION.
FM. ELECTRICAL PERFORMANCE
Model: MMR-77 Brand:SANGEAN Temp:
°C
R.H.: % Date:2005/06/15
Condition Value Test no.
Test Item
Input Output freq Nom. Lim 1. 2. 3.
Unit
Min 87.5 ±0.5
Tuning Range S/N=6dB
Max 108.5 ±0.5
MHz
Intermediate freq. S/N=6dB 10.7
±
0.15
MHz
Max. Sensitivity S/N=6dB
90MHz
98MHz
106MHz
12
12
12 18
18
18
dBu
Usable Sensitivity S/N=30dB
90MHz
98MHz
106MHz
20
20
20 26
26
26
dBu
Image Rejection S/N=6dB 106MHz 26 20 dB
I.F. Rejection S/N=6dB 90MHz 50 dB
3db Limiting (10mv) 80dBu 18 24 dBu
Min. output 60dBu 1.5 3 mV
Tuning Ind. Sens. 26 32
Auto. Scan. Stop. Sens.
Stereo indicator Sens.
dBu
Buzzer freq 2.5 ±0.2 KHz
Buzzer Lever 2.5 2.0 V
P-P
S/N 46 40 dB
Current Consumption
RO 10mw
30 36 mA
Am. Suppression (1mV) 26 dB
4500 4000 Hz
Audio fidelity
-6dB
100 150 Hz
Max. 120 100
Output Power(75Khzdev)
10%T.H.D. 120 100
mW
T. H. D. (75KHz dev.)
60dBu
1.5 3 %
Over load capacity 10%T. H.D.
98MHz
100 90 dBu
Calibration S/N=6dBu
90MHz
98MHz
106MHz
±
1000
±
1500
KHz
Lowest Batt. Volt. 60dBu 1.8 2.0 V
Supply Voltage: DC 3 V R.O.: 50mW Load: 8 Ohm Modulation: 1KHz Mod./22.5KHz Dev.
Remark:
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首件產品
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客戶抽測
:
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成品
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例行抽測
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業務樣品
:
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半成品
( V )
新機種
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工程變更
:
Approved by Released/Tested by
2