Philips CEM2000/00 Service Manual page 63

7.2 AM MW overall system performance
Antenna level equivalence: 0dBμV = 1μV
Level referred to SG output
before antenna dummy; capacitive dummy 15pF+65pF
Reference modulation = 30%, f
Unless otherwise specified
Symbol Parameter
Tuning range MW Eu/Jp
Tuning step MW Eu/Jp
Tuning range MW US
Tuning step MW US
Sensitivity
Ultimate S/N
AGC F.O.M.
Distortion
Adjacent channel Selectivity
Alternate Channel Selectivity
Strong signal interferer (1)
SNR
Strong signal interferer (1)
suppression
Strong signal interferer (1)
cross-modulation
Strong signal interferer (2)
SNR
Strong signal interferer (2)
suppression
Strong signal interferer (2)
cross-modulation
Max. Strong signal interferer
Image rejection
Logarithmic field strength
indicator
rms
=400Hz, F =999kHz (1000 kHz for US), V
audio rf
Test Condition, Comments
(can be modified by the user)
(can be modified by the user)
(can be modified by the user)
(can be modified by the user)
S/N =20dB
@ 80dBu
Ref.=74dBu
-10dB drop point
M=80%
ΔF=9kHz, SINAD=26dB
undesired. m=30%, 1kHz
ΔF=18kHz, SINAD=26dB
undesired. m=30%, 1kHz
ΔF=±40kHz
desired=40dBu
undesired=100dBu, m=30%,
1kHz
ΔF=±40kHz
desired=40dBu
undesired=100dBu, m=30%,
1kHz
ΔF=±40kHz
desired=80dBu
undesired=100dBu, m=30%,
1kHz
maximum SNR of undesired
channel
ΔF=±400kHz
desired=40dBu
undesired=100dBu, m=30%,
1kHz
ΔF=±400kHz
desired=40dBu
undesired=100dBu, m=30%,
1kHz
ΔF=±400kHz
desired=80dBu
undesired=100dBu, m=30%,
1kHz
maximum SNR of undesired
channel
Desired = 40dBu
SINAD = 26dB, blocking<6dB
Undesired ΔF = 400kHz,
m=30% (crossmod. test)
@TBD dBu
read "AM_Smeter_log"
Rev. 1.0
TDA7703/TDA7703R
= 74 dBu
rf
Limits
Min Typ Max
531 1629
9
530 1710
10
28
66
50 60
0.3
33
50
17
1
10
18
1
10
89
70
TBD TBD
(equiv. (equiv.
TBD
to TBD to TBD
dBu) dBu)
Units
kHz
kHz
kHz
kHz
dBu
dB
dB
%
dB
dB
dB
dB
dB
dB
dB
dB
dBu
dB
-
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