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Verfügbare Sprachen
Verfügbare Sprachen
STEP
ADJUST POINT
PROCEDURE
1
Connect a sweep generator to the TP207 — with the sweep output level at "70 dB."
2
Connect a response lead (with 10 kohm series resistor-direct probe on it) to the between R229 and earth.
Connect the AGC bias supply to the TP205 and adjust it so that the waveform oscilloscope becomes
PIF detection
1Vp-p — this should not exceed 10V at maximum.
AFT (T202, T201)
i
4
Adjust the T202 so as to make the tuning point be at 38.9 MHz (the value at "P'').
See Fig. 6.
5
Adjust the T201 so as to make the depressed point at the top of waveform be at 38.9 MHz (the
value at '"P"). See Fig. 7.
P
38.9MHz
.w-Due to rotation
Sound signal
Adjacent
sound signal
Figure 6.
Figure 7.
STEP
ADJUST POINT
PROCEDURE
1
Set the unit in "VHF 12 ch."
2
Make 12 ch. field strength be 80 dB.
AGC cut-in adjust
'
:
Fi
B a
D o
3
(R217)
Connect an oscilloscope to the between R229 and earth (at horizontal synchronization),
Rotate the AGC knob until there will appear, on the oscilloscope, a little of noise mixed in the
4
synchronization signal and only after this, again use it to adjust so that the amplitude of
synchronization signal becomes in the range of 25 to 50 mVp-p, with the noise scarcely caused.
25 to
SOmVp-p
11
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