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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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