Table of Contents
Advertisement
MODEL DA.RISP
N o .
Measured
item
Input/Output and procedure
Point of
adjurtment
Adjurtment for
Remarks
1 0
LW
Coveraç
Adlustment
o Set the function to the LW position and
200kHz in the state of reception.
o Connect the DC voltmeter to TP9 and TP3
( G N D ) .
L99
Adjust so that
the voltage
becomes
1.0v10.05
1 1
a As in the above step, set the unit in the
reception state whose maximum receiving
frequency is 400kHz.
TC99
Adjust so that
the output
voltage becomes
9 . 0 v t 0 . 1 v .
1 2
Adjust by repeating the steps 10 and 11 alternately so that the output voltage becomes within the
specified range.
1 3 LW
Tracking
Adjustment
o Radiate each of the tracking point frequencies
given below from the AM test loop antenna to
L98. (signal level 60dB/m)
o Receive each of the tracking point freguencies
given below by means of the Ten key or Tuning
Up/Down Switch.
o Connect the AC voltmeter to TPI (L ch) or
T P 2 ( R c h ) a n d T P 3 ( G N D ) .
'
Tracking point frequency
344kHz
200kHz
1 6 1 k H z
L98
TCg8
Adjust so that
the output is
maximized at
each tracking
point.
1 4
Repeat adjustment at each tracking point alternately.
1 5
A M I F
Wave form
Adjustment
o Set the function to the MW position and
999kHz in the state of reception.
o Connect the AM test loop antenna to the
output terminal of the sweep generater and
radiate the 450kHz signal to the L8.
Connect the input terminal of genescope
between the TP7 and TP3 and check to ensure
that the waveform shows a symmetry between
the right and left with 450kHz as its center.
T1
T2
Adjust so that
right and left
are symmetrical
and the trough
i s m a x i m i z e d .
lf not
s y m m e t r i c a l ,
readjust by
varying Tl and
T2 within the
ranç of
4 5 0 k H z t l k H z
to move the
crest so that a
symmetry is
obtained
between the
right and left
and the trough
i s m a x i m i z e d .
1 6
FM MPX
Frec Run
Frequency
Adjustment
.
Set the FM signal generator to 98.00MH2 and
connect it to the FM antenna terminal through
the 300f2 balanced dummy. (signal level l mV)
o Set the function to the FM position and
98.00MH2 in the state of reception.
.
Connect the frequency countcr to TPl0 and
T P 3 ( G N D ) .
V R l
Adjust so that
the frequency
becomes l9kHz
+0.5kH2.
1 7
Separation
Adju*ment
.
Connect the stereo signal modulator to the FM
signal generator. Connect the 98.00MH2 lmV
signal to the FM antenna terminal through the
300O balanced dummy.
.
Set the function to the FM position and
98.00MH2 in the state of reception.
o Connect the AC voltmeter and oscilloscope
t o T P I ( L c h ) , T P 2 ( R c h ) a n d T P 3 ( G N D l .
V R 2
Adjust so that
L c h a n d R c h
scparation is
m a x i m i z e d .
Advertisement
Table of Contents
