1-3
LF Generator
e.g. PM5110
Recorder
Use Universal Test Cassette
CrO2
SBC419 4822 397 30069
LEVEL METER
e.g. Sennheiser UPM550
with FF-filter
S/N and distortion mete
e.g. Sound Technology ST170
L
R
DUT
or Universal Test Cassette
Fe
SBC420 4822 397 30071
LEVEL METER
e.g. Sennheiser UPM550
with FF-filter
S/N and distortion meter
e.g. Sound Technology ST1700B
L
R
DUT
CD
Use Audio Signal Disc
(replaces test disc 3)
SBC429 4822 397 30184
Bandpass
250Hz-15kHz
e.g. 7122 707 48001
LF Voltmeter
e.g. PM2534
DUT
S/N and distortion meter
e.g. Sound Technology ST1700B
Frame aerial
e.g. 7122 707 89001
Tuner AM (MW,LW)
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).
RF Generator
e.g. PM5326
Ri=50
Ω
Bandpass
250Hz-15kHz
e.g. 7122 707 48001
LF Voltmeter
e.g. PM2534
DUT
RF Generator
e.g. PM5326
S/N and distortion meter
e.g. Sound Technology ST1700B
Use a bandpass filter to eliminate hum (50Hz, 100Hz) and disturbance from the pilottone (19kHz, 38kHz).
Ri=50
Ω
Tuner FM
MEASUREMENT SETUP
Summary of Contents for FWM375
Page 8: ...2 1 2 1 SET BLOCK DIAGRAM ...
Page 9: ...SET WIRING DIAGRAM 3 1 3 1 ...
Page 10: ...4 1 4 1 PCB LAYOUT FRONT BOARD TOP VIEW ...
Page 11: ...PCB LAYOUT FRONT BOARD BOTTOM VIEW 4 2 4 2 ...
Page 12: ...4 3 4 3 CIRCUIT DIAGRAM FRONT BOARD ...
Page 13: ...5 1 5 1 PCB LAYOUT HI AMP BOARD ...
Page 14: ...5 2 5 2 CIRCUIT DIAGRAM HI AMP BOARD ...
Page 15: ...6 1 6 1 PCB LAYOUT MAIN BOARD TOP VIEW ...
Page 16: ...PCB LAYOUT MAIN BOARD BOTTOM VIEW 6 2 6 2 ...
Page 17: ...6 3 6 3 CIRCUIT DIAGRAM MAIN BOARD ...
Page 18: ...6 4 6 4 CIRCUIT DIAGRAM MAIN BOARD TAPE PART ...
Page 19: ...7 2 7 2 PCB LAYOUT POWER LOW AMP BOARD TOP VIEW ...
Page 20: ...7 2 7 2 CIRCUIT DIAGRAM POWER BOARD ...
Page 21: ...7 3 7 3 CIRCUIT DIAGRAM LOW AMP BOARD ...
