Measurement Setup - Philips CEM220/55 Service Manual

1-3
MEASUREMENT SETUP
Tuner
FM
Bandpass
250H2-l
skHz
S/N and
distortion metel
6.9. Sound Tochnology ST170OB
Us6 a
bandpass
filt€rto eliminate hum(50H2,100H2) and disturbance from th6
pilottone(19kHz,38kHz)
TunerAM (MW,LW)
Bandpass
250H2-l skHz
e.a.
?
122 707 4E0l
LF
Voltmeter
e.g. PM2534
To
avoid atmospheric
interferencc
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 250H2)
to
sliminate hum
(
50H2,100H2
).
RF
Generator
CD
UseAudio Signal
Disc
SBC429
4822397 30184
(replaces test disc 3)
Cassette
Use Universal Test Cassetto CrO2
or Universal
Test
Cassette Fe
sBC419 4822 397 30069
sBc420 4822357
30071
LEVEL METER
6.9.
Sonnh.l..r
UPM550
with
FF-tilte.
LEVEL METER
..9. Scnnhoir.r
UPM550
with FF-fllter
a
o o
a
o o
a
oo
a
o o
RF
Generator
OUT
S/N and
distortion
meter
€.9. Sound T6chnology
ST17008
a
o o
a
o o
a
o o
a
o o