Advertisement
Model
339A
Section VII
SECTION
VII
MANUAL CHANGES
7
1.
INTRODUCTION.
7-6.
MANUAL
CHANGE
INSTRUCTIONS.
7-2.
This
section
contains
information
necessary
to
adapt
this
manual
to
instruments with
serial
numbers
lower than
the
number
listed
on
the
title
page.
7-3.
MANUAL
CHANGES.
7-4.
To
adapt
this
manual
to
your
instrument,
refer to
le
7-1
and
make
the
manual
changes
listed
opposite
ur
instrument
serial
number. These
changes should be
performed
in
the
sequence
listed.
7-5. If
your instrument
serial
number
is
not
listed
on
the
title
page of
this
manual
or
in
Table
7-1,
it
may
be
documented
in
a
yellow
MANUAL
CHANGES
supple-
ment
included with
the
manual. For
additional
informa-
tion, refer to
INSTRUMENT
AND MANUAL
IDEN-
TIFICATION
in
Section
I.
CHANGE
A
The
oscillator circuitry
was
simplified
beginning with
in-
strument
serial
number
1730A00266.
To
adapt
this
manual
to
prior
instruments
make
the
following
changes.
Page
6-3,
Table
6-3.
Add:
A1C20,
0180-0291,
Cap-Fxd
1
jx
F ±
10%
35
VDC TA
A1CR1,
1901-0518,
Diode-Schottky
A1Q1,
1855-0360, Transistor
Mosfet
N-Chan D-Mode
A1R32,
R33, 0698-7332,
Resistor
1
M
1%
.125
W
F
TC
=
0±
100
Delete:
A1CR14,
1901-0040,
Diode-Switching 30
V
5
mA
Table
7-1.
Manual Changes
by
Serial
Number.
Instrument
Serial
No.
Make
Manual
Change
1
730A001
01
to
1
730A00266
A
Page
8-21/8-22, Figure
8-17.
Change:
Modify
the
amplitude
control
circuitry as
shown
in
Figure
7-1.
Figure
7-1.
Amplitude
Control
Circuit
Change.
Advertisement
