MEASUREMENT SETUP
Tuner FM
DUT
RF Generator
Bandpass
LF Voltmeter
e.g. PM5326
250Hz-15kHz
e.g. 7122 707 48001
e.g. PM2534
S/N and distortion meter
e.g. Sound Technology ST1700B
R
i=
5
0
Use a bandpass filter to eliminate hum(50Hz,100Hz) and disturbance from the pilottone(19kHz,38kHz).
Tuner AM (MW,LW)
DUT
RF Generator
Bandpass
LF Voltmeter
e.g. PM5326
250Hz-15kHz
e.g. 7122 707 48001
e.g. PM2534
S/N and distortion meter
e.g. Sound Technology ST1700B
R
i=
5
0
Frame aerial
e.g. 7122 707 89001
To avoid atmospheric interference all AM-measurements have to be carried out in a Faraday s cage.
Use a bandpass filter ( or at least a high pass filter with 250Hz) to eliminate hum ( 50Hz,100Hz ).
'
DUT
L
R
LEVEL METER
e.g. Sennheiser UPM550
with FF-filter
S/N and distortion meter
e.g. Sound Technology ST1700B
Use Audio Signal Disc SBC429 4822 397 30184
(replaces test disc 3)
CD
1-3
Summary of Contents for MX-390DVD
Page 13: ...4 4 SET WIRING DIAGRAM ...
Page 15: ...5 2 5 2 CIRCUIT DIAGRAM KEY BOARD ...
Page 16: ...5 3 5 3 LAYOUT DIAGRAM KEY BOARD TOP VIEW LAYOUT DIAGRAM KEY BOARD BOTTOM VIEW ...
Page 19: ...6 2 6 2 CIRCUIT DIAGRAM SERVO BOARD ...
Page 20: ...6 3 6 3 CIRCUIT DIAGRAM SERVO BOARD ...
Page 21: ...6 4 6 4 CIRCUIT DIAGRAM SERVO BOARD ...
Page 22: ...6 3 6 3 LAYOUT DIAGRAM SERVO BOARD TOP VIEW LAYOUT DIAGRAM SERVO BOARD BOTTOM VIEW ...
Page 25: ...7 2 7 2 CIRCUIT DIAGRAM MAIN BOARD ...
Page 26: ...7 3 7 3 LAYOUT DIAGRAM MAIN BOARD TOP VIEW ...
Page 27: ...7 4 7 4 LAYOUT DIAGRAM MAIN BOARD BOTTOM VIEW ...