HP 339A - Page 50

Table
5-1.
Factory Selected
Component*.
Reference Designator
Range of Values
Description
A1C47
27
pF to
750
pF Value selected for
minimum
second harmonic
distortion at the
Oscillator output
for
fundamental
frequencies
of
20
kHi
end
ebove.
A3C132
4-7
pF
to
16
pF
Value
selected
to
Dtewent
amplifier
A3LJ101
from oscillating.
Table
5-2.
Adjustable
Components.
UjiatiMn N«m»
Ret*'an
to
D#*ifln*iar
Ad|iii(mtnl
E»raffr»pli
DwcriptaM
10
KHt
ADJUST
A1C7
5
13
Ariius*
Oscillator tiemueney rr
lOfeH*
AMPJTUOE ADJUST
At
ft30
8-13
Adjust Ihi
basic outout
Iftrf'
0<
the oicilkmoi
amplifier
PULL
SCALE
ADJUST A2ft1? S-U
iSteptl
Ad|u*?
meter
amplif.-er *c
t
lull
seals roatei
tnoictuon
AUTO SET-LEVEL t'3
SCALE ADJUST
A2R22
6-12
(Step
v|i Ad|uiis
I“>b pern of rhe Auto Set
Leva Circuit Ic*
1
*r
apoUac
mnut leva
1
ecuft*
to
l
'3
fuli-tCll?
AUTO
SET LEVEL
full-scale
adjust
A2R24 6-12
ISwp
t;
4d|u»tJ the pftin ol the Auto
S*t
»evel enttut
for
in
apa'ieri
input level equal to
Iwlt-isaie
LOW
LIMIT
adjust
A2R35
E
1
13
rSt«£
j|
Adju&t the low limn
reference of the
input
Level
•
fVJiC&lor
CrT-isuif
input
level* balow
this reference
will cause the
low
*nau!
level
mtliCllor tc lifi^t
reference adjust
A2R35 5-12 <5cep hi
Adjusts The Acte S-ei-
Level lull *ca»e
reference
voltece
1/3 SCALE
ADJUST
A2R37
5 1 2<Stepe) Adjufiii the
meter
amplifier jam lor prop#'
rr>e:«r
inaieaiion
witn ar.
applied
irvput
level equal
to
1/3
of
full
.e
cel
•
HIGH FREQUENCY
ADJUST
A3C
- a
5-18
Neuirainos
the
elfactb of
cioicilna
loacing at the
Notch
Filter
NOTCH
FILTER
NULL
ADJUST
A4-P16
S
17 Adjultfc
tn»
null Oepirt
el
me
Notch Filter
NOTCH
FILTER
FREQUENCY
ADJ
MR43
5-17
Ad| inti rha Notch
Filial frequency to
ofritar naiurt'ur
1
null
depth
INPUT BAlJVNCE
ADJUST
A4Htb
5
17
1 AdjueU
the
input
balance
to
ti>* ampiiTun*
feedback
Q«modLil|iior 10
reduce
distortion
at
low IratqueftCiet
f
.•
i
L
L
£-
f
•