Pioneer KEX-M9527ZT/UC Service Manual page 44

1
AM NOISE CANCELER ADJUSTMENT
Connection:
A
SSG
Pulse generator
(equivalent to HP8011A)
Setting of the pulse generator (setting of
superimposed pulse)
B
50us
5ms
Adjustment:
1. Setting of SSG
Receiving frequency
Receiving frequency
Percentage modulation : 30%
Modulation frequency : 400 Hz
Antenna input
2. Tune a RADIO to the "999kHz" or "1,000kHz" with 1' condition.
3. Mix signal with the above-mentioned pulse and
C
SSG' moduration OFF.
4. Variable resistance adjust noise level to a
minimam.
Adjustment point : VR561
D
44
1
2
2-signal pad AM dummy
Pulse width :50usec
4Vp-p(EMF)
Pulse intervals :5msec
Pulse voltage :4Vp-p
: 1,000 kHz (KEX-M9527ZT/UC
KEX-M9727ZT/UC)
: 999 kHz (KEX-M9627ZT/ES)
: 74 dBuV (EMF)
KEX-M9527ZT/UC
2
3
Output
KEX-M9527ZT/UC
Noise meter
KEX-M9727ZT/UC
KEX-M9627ZT/ES
3
4
4