Sangean MMR-77, Service Manual

Page: 3 / 28

SPECIFICATION.
MW. ELECTRICAL PERFORMANCE
Model: MMR-77 Brand:SANGEAN Temp:
°C
R.H.: % Date: 2005/05/15
Condition Value Test no.
Test Item
Input Output freq Nom. Lim 1. 2. 3.
Unit
Min 515 525
Tuning Range
Max 1750 1710
KHz
Intermediate freq. S/N=6dB Min 460
±
3.5
KHz
Max. Sensitivity S/N=6dB
600KHz
1000KHz
1400KHz
56
56
56
dBu/m
Usable Sensitivity S/N=20dB
600KHz
1000KHz
1400KHz
58
56
56 64
64
64
dBu/m
Image Rejection S/N=6dB 1400KHz 26 20 dB
I.F. Rejection S/N=6dB 600KHz 40 40 dB
Selectivity(
±
10KHz)
S/N=6dB 26 20 dB
Bandwidth(-6dB)
Mod400Hz
S/N=6dB 4-9 KHz
T. H. D. 74dBu/m 3 5 %
Lowest Batt. Volt. 74dBu/m 1.8 2.0 V
Hum Modulation
100dBu/m
dB
Tuning Ind. Sens. 56 62
dBu/m
Auto. Scan. Stop. Sens.
dBu/m
S/N Ration 74dBu/m 30 dB
Current Consumption 74dBu/m 10mW 34 28 mA
1m/120T out 10mW 74dBu/m 30 ±3 m
100 150 Hz
Freq. Response
(-6dB)
74dBu/m
2200 2000 Hz
MAX 120 100
Output Power(80%dev) 74dBu/m
10%T.H.D. 120 100
mW
Over load capacity 80%mod. 10%T. H.D. 100 90
dBu/m
A. G. C. F. O. M.
100dBu/m
1000KHz
46 40 dB
Calibration S/N=6dBu
600KHz
1000KHz
1400KH
z
±
50
±
70
KHz
Whistle Modulation 74dBu/m 2IF/3IF 10 %
Supply Voltage: DC 3V R.O.: 50mW Load: 8 Ohm Modulation: 1000Hz/30%
Remark:
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首件產品
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客戶抽測
:
( )
成品
( )
例行抽測
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業務樣品
:
( )
半成品
( V )
新機種
( )
工程變更
:
Approved by Released/Tested by
3