Philips PM 5390 - Page 40

7-10
|<-56
dB
I
i
<-30
dBc
<-30
dBc
<-25
dBc
<-20
dBc
<-30
dBc
<-30
dBc
<-40
dBc
<-67
dBc
35mVntis..»
<300mVrms
35mVrms.,,
:S150mVrms
<
250Hz/rms
<100
Hz/rms
m
=
50%+5%
m>
80%
Af
=
75+
1kHz
Af
=
25+2kHz
-16dB+1dB
RF-U1/L808/809
RF-U1/C599
RF-U2/R616
RF-U2/R626
R6B
1
/U3
RF-U1/C558
U3/R645/631
spectral
purity
T non
harmonics,
check level ratio £ref
=
39.0625
kHz
to RF
carrier
I
SPA
setting:
BW
=
3 kHz,
SW
=
20 kHz,
ST
=
50
ms
harmonics
PM
5390
t
level
ratio 2nd/3rd
harmonics
to
RF
carrier
freq. range O.
1-340
MHz all
harmonics
harmonics
PM
5390S
+SPA
setting:
BW
=
300 kHz,
SW
=
100 MHz,
ST
=
Sms
--
non
harmonics,
select
some frequencies
(PM
539o/PM539
OS)
check
freq. 190
MHz, adjust
by
more/less
compression
of
coils
check
at
freq.
510
MHz, adjust
to minimum
I
base
signal
level,
oscillator
VC02a
(ser. LO 04
onw.
)
measured
at
IC303
pin 16
I
base
signal
level,
oscillator
VC02b
(ser.
LO 04
onw.)
measured
at
IC303
pin 16
T
residual
FM
;
FAM
setting;
FM,
RMS,
filter
10Hz/3kHz
check
some
freq.
,
e.g.
10,
160,
170,
340,
435,
510,
680,
840,
850MHz
Modulation
modes
AM
ext.,
signal
to MOD
IN:
10
kHznu,
0.5
Vpp,
check
at
freq.:
'20,
150,
190,
320,
490,
530,
660,
850, 1000
MHz
AM
ext.,
signal
to
MOD
IN:
20
kHz'^,
1
Vpp;
check
some
RF
freq.
FM
ext.,
signal
to
MOD
IN:
20
kHz~,
1
Vpp;
adjust
0588
||
1
.2pF . .
. 3
.3pF
FM
intern
Vl^,
SPA
setting:
BW
=
300
kHz,
SVJ
=
5
liHz,
ST
=
5ms,
Zero
residual
RF
carrier,
signal
to
VIDEO
IN:
CVBS
white
1
Vpp