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GX-N5E
No.
Item
Bea Ung
Test point and Adjustment part
Description
|
instrument
noes
3. | AGC
Oscilloscope
| TP-2
R225 (AGC BAL-2)
|c Set the IRIS CONTROL SWITCH to AUTO.
BAL-2
©
Leave the CR jumper shown in Fig. 3-2 (a)
Adjustment
( V-rate )
connected.
10:1
1. Cover the lens by hand or with the cap, to
check the AGC circuit function.
White
2. Gradually
cover
the
lens
by hand.
Stop
pattern
when OB separates.
3. Adjust
R225
(AGC
BAL-2)
until OB
con-
icides with the base line, as shown
in Fig.
3-3.
Protected portion of
Keep the protection of
waveform appears
waveform from motion
Basic line
V-rate 10:1
Fig. 3-3
4. lf the carrier center
position
on the vec-
torscope moves when AGC is set to On and
Off, repeat the adjustment from step 3-1.
(Note) R225
(BAL-2)
is
generally
set
to
mechanical center.
|
(No. 5391B) 19E
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