MODEL 8559A
ADJUSTMENTS
TABLE 5
-
1.
ADJUSTABLE COMPONENTS
(3
OF
3)
Adjustment
Name
LOG GAIN
1 dB (offset)
OD (0 dB)
-
12D (
-
12 dB)
1 B
2B
3B
4B
5B
5C
6B
6C
1
A
2A
3A
4A
5A
6A
v3+
v3
-
v1
v2
-
v2+
SYM
Reference
Designator
ldjustment
Paragraph
Description
Adjusts dc offset circuitry at output of Log Amplifier
Assembly A14 for 10 dB steps in log mode.
Adjusts LOG 10
dB/DIV translation.
Adjusts variable gain amplifier for
0 dB with REF
LEVEL FINE control set to
0 dB.
Adjusts variable gain amplifier for
-
12 dB with REF
LEVEL FINE control set to
-
1
2 dB.
Adjusts slope of Band
1
response.
Adjusts slope of Band 2 response.
Adjusts slope of Band 3 response.
Adjusts slope of Band 4 response.
Adjusts slope of Band 5 response.
Adjusts
high-end breakpoint in slope of Band 5
response.
Adjusts slope of Band
6
response.
Adjusts high
-
end breakpoint in slope of Band 6
response.
Adjusts gain of Band
1.
Adjusts gain of Band 2.
Adjusts gain of Band 3.
Adjusts gain of Band 4.
Adjusts gain of Band
5.
Adjusts gain of Band 6.
Adjusts diode bias for Band 6.
Adjusts diode bias for Band 5.
Adjusts diode bias for Bands 1 and 2.
Adjusts diode bias for Band 3.
Adjusts diode bias for Band
4.
Adjusts symmetry of first crystal bandwidth fdter
stage.
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