Wavetek 188 Instruction Manual page 27

Tester
Step Check
1
Power Vo lt meter
Su pply
2
3
4
5
Capac itor
M u ltiplier
Zero
6 Cou nter
Approximate
Bottom of
the D ial
Frequency
Scope
7 Bottom
of
t h e
Dial
Symmetry
8
Cou nte r
Bottom of
the
D i a l
Frequency
(Lin)
9
Top of the Scope
Dial
Symmetry
1 0 the
Top of
Dial
Frequency
(Lin)
1 1
1 2
1 3
1 4
1 5
1 6
1 7 Bottom of
Dial
t h e
Freq
u
e n c y
(Log)
Scans by Artekmedia
Table 5-1 _ Alignment Procedure
Point Test
Contro l Settin g
Paragraph 5.4,
C4 +
Step
cs -
C7 +
C6 -
SW3 · B
Wiper
D ial: .004
500 OUT
UL T
H I FREQ 1 0K
:
(term l n· M
ate I n to
500
FREQ M U LT: 1 K
x
4.0
D i al:
Dial:
4.0
FREQ M U LT: x 1 K
FREO MUL T: 10K
x
FREQ x 1 M
M U LT:
x
FREQ T: 1 00 K
M U L
FREQ M U LT: 1 00
x
T:
x
F R EQ M U L 1 0
x 1
F R EQ:
Dial: .0004
FREQ MULT: 1 0K
x
SWEE P:
CONT,
STOP,
LOG
2011
=>
Adjust
Result
+ 15 ± .75V
2
- 1 5 .75V
±
+ 5
± .25V
- 5 .25V
±
R9 0 o ± 2V
R37 20 ms
perlOd
R4 9
Equal ize ( + )
( - )
and
half
cyc l es
250
R37
ma
( + 501 - 0)
periOd
Equalize ( + )
R45
( - ) half
and
cyc l es
( ± .2)
R 1 9 4 kHz
40 ( ± .8) k H z
( ± .02)
C34 4 M Hz
( ± 8)
400 kHz
( ± . )
2.5 05
R86
ms
25 ( ± .5) ms
( ± 5)
250
ms
R27 250
( + 501 - 0)
ms
Remartt
Ve rity.
± 1 5V shou l d track
with i n 30 mV
soope to ( - ) trigger;
Set
d i s p l ay full
one cycle.
pos itive
Al i g n transition to
of
center screen (horizon tal)
10).
x Set scope to
disp lay
R49
to
( + ) trig g e r; adjust
a l i g n negative transition
with
center of screen
7
See step
Verify
Verify.
If necessary,
tri m by
value
C33
changi n g of
Verity
5-3