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1
AM NOISE CANCELER ADJUSTMENT
A
Connection:
SSG
2-signal pad
Pulse generator
(equivalent to HP8011A)
Setting of the pulse generator. (setting of superimposed pulse)
B
50us
5ms
Adjustment:
1. Setting of SSG
Receiving frequency
Percentage modulation : 30%
C
Modulation frequency : 400 Hz
Antenna input
2. Tune a RADIO to the "999kHz" with 1 condition.
3. .Mix signal with the above-mentioned pulse and
SSG moduration OFF .
4. Variable resistance adjust noise level to a
minimum.
Adjustment point : VR561
D
E
F
40
1
2
Output
KEX-M8406ZT
KEX-M8547ZT/EW
AM dummy
KEX-M9406ZT
KEX-M8647ZT/EW
Pulse width
:50µsec
4Vp-p(EMF)
Pulse intervals :5msec
Pulse voltage :4Vp-p
: 999 kHz
: 74 dBµV (EMF)
KEX-M8547ZT/EW
2
3
Noise meter
3
4
4
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