Pioneer Lexus RX300 Servicehandleiding - Pagina 37

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AM NOISE CANCELER ADJUSTMENT
Connection:
SSG
Pulse generator
(equivalent to HP8011A)
Setting of the pulse generator (setting of
superimposed pulse)
50us
5ms
Adjustment:
1. Setting of SSG
Receiving frequency
Percentage modulation : 30%
Modulation frequency : 400 Hz
Antenna input
2. Set the system as shown in 1., then tune to a
radio station.
TE
L 13942296513
3. Superimpose the pulse over signal to set
modulation of SSG to OFF.
4. Use a noise meter to monitor output. Adjust
VR201 to minimize the noise level.
www
.
http://www.xiaoyu163.com
AM dummy
2-signal pad
KEX-M8017ZT/ES
antenna
Pulse width
4Vp-p(EMF)
Pulse intervals :5msec
Pulse voltage :4Vp-p
: 999 kHz
: 74 dBuV (EMF)
x
ao
y
i
http://www.xiaoyu163.com
8
Output
Noise meter
:50µsec
Q Q
3
6 7
1 3
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.
KEX-M8017ZT,M8017ZT-91
2 9
9 4
2 8
1 5
0 5
8
2 9
9 4
m
co
9 9
2 8
9 9
37