Wavetek 182A Instruction Manual page 20

I
Step Check Tester
6 Approximate Counter
Bottom of
the Dial
Frequency
7 Bottom Scope
of the
Dial
Symmetry
8 Bottom of I Counter
the Dial
I
Frequency
Top of the i
9 Scope
Dial
Symmetry
10 Top of the
Counter
Dial
Frequency
11
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I
I
I
�
I
13
I
I
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----i
16
17
Sine Distortion
Distortion Analyzer
18 Output Scope
Amplitude
19 Output Voltmeter I
Offset
20 Baseline Scope
Zero
5-2
Table 5·1 . Alignment Procedure (Continued)
Test Control
Point Setting
500 OUT Dial: .004
10K
HI (termin- F REQ MUL T:
ate into
500
1K
F REQ MULT:
x
I
Dial: 4.0
I
Dial: 4.0
1K
F REQ MULT:
x
K
F REQ MUL T: 10
x
F REQ MULT: 1M
x
lOOK
F REO MUL T,
x
I
j
F REQ MULT: 100
x
I
F REQ MULT:
10
x
F REQ: 1
x
I
"v
FUNCTION:
K
F REQ MULT: 1
x
"v
FUNCTION:
"v
FUNCTION:
I
MODE: Trigger
Adjust Result
R37 20 ms
period
( Set scope to ( -) trigger;
R49 Equalize )
+
display one full cycle.
and (-) half
Align positive transition to
cycles
center of screen. Multiply the
i
horizontal display
scope (
I
to align negative transition
I
with center of screen
R37 350 ±50 ms
period
See step 7
R45 Equalize (+)
and (-) half
cycles
4 ±0.2 kHz
R19
Verify
40 ±.8 kHz
C34
4 ±.02 MHz
400 ±8 kHz Verify.
If necessary, trim by
changing value of C33
R86 2.5 ± .05 ms
25 ±.5 ms Verify
250 ±5 ms
R97 Adjust for It may be necessary
R114 minimum to reduce amplitude
distortion
to 5V peak
10 Vp-p .3V
R118 +
- O
V
I
R112 OV ±50 mv
R81 OV ±75 mv It may be necessary
t o
with R80
Remark
10. Set
x
) trigger; adjust R49
+
t r i m t h e b a s e l i n e