Model209A
SECTION
I
GENERAL
INFORMATION
Section I
1-1.
INTRODUCTION.
1-2.
This section contains general information about
the
-hp-
Model 209A Sine/ Square Oscillator.
Throughout this manual the instrument will
be
referred to
as
the Mode1209A.
1-3.
SPECIFICATIONS.
1-4.
Table
1-1
lists the specifications for the Model
209A.
1·5.
DESCRIPTION.
1-6.
The Model 209A
is
a versatile signal source with
independent sine
wave
and square
wave
outputs at
frequencies from 4
Hz
to 2
MHz.
The square
wave
amplitude
is
variable to a maximum
of
20 volts
peak-to-peak into open circuit. The sine
wave
amplitude
is
variable to a maximum
of
10 volts rms
into open circuit from a constant 600 ohm source.
When
working into a 600 ohm load, the maximum
output level
is
5 volts rms.
1-7.
Balanced
output can be obtained by
disconnecting the grounding strap at the rear
of
the
instrument. This isolates the chassis from the cabinet
and line ground. The sine
wave
output
will
balance to
greater than 40 dB, at frequencies below 20 kHz,
with the chassis isolated.
1-8.
The Model 209A can
be
synchronized with an
external source. With a 5 volt rms sync input, the
external source may vary
as
much
as
+/-7%
in
frequency and the Model 209A will remain
synchronized.
1-9.
A sync output
of
1.7 volts rms
is
also available
at the same front panel terminal used to accept an
external sync source.
1-10.
INSTRUMENT/MANUAL
IDENTIFICATION.
1-11. Hewlett-Packard
uses
a two-section serial
number. The first section (prefix) identities a series
of
instruments. The last section (suffix) identifies a
particular instrument within the series.
If
a letter
is
included with the serial number, it identifies the
country in which the instrument
was
manufactured.
If
the serial prefix
of
your instrument differs from
the one on the title
page
of
this manual, a change
sheet will be supplied to make this manual
compatable with newer instruments or the backdating
information in Appendix
C
will
adapt this manual to
earlier
instruments.
All
correspondence with
Hewlett-Packard should include the complete serial
number.
Figure
1-1.
Model 209A Sine/Square Oscillator
1-1
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