HP 3312A Service Manual

Model 3312A
Section I
SECTION |
GENERAL
1-1. INTRODUCTION.
1-2. This manual contains installation procedures, oper-
ating instructions and maintenance information for the
Model 3312A Function Generator. Instrument specifica-
_ tions and procedures for adjusting the instrument to those
specifications, schematic diagrams, theory of operation, and
troubleshooting information are provided for use in main-
taining the instrument.
1-3. This section of the manual contains a description of
the Model 3312A, the performance specifications and
characteristics, and instrument identification information.
1-4, DESCRIPTION.
1-5. The Hewlett-Packard Model 3312A Function Genera-
tor is a compact, wide range, dual function generator
consisting of a main generator and a modulation generator.
The main generator provides sine, square, or triangle wave
outputs over the frequency range of 0.1 Hz to 13 MHz. The
modulation generator produces sine, square and triangle
waveforms with a frequency range of 0.01 Hz to 10 kHz.
The modulation generator can be used to Amplitude
Modulate (AM) or Frequency Modulate (FM) the output
signal of the main generator. The AM envelope can be
adjusted from 0% to 100%; FM can change the carrier
frequency up to + 5%,
1-6. SWEEP OUTPUT.
1-7. For added versatility, the 3312A has a built-in sweep
generator which can be used to sweep the frequency of the
main generator. The frequency of the main generator can
be swept as much as 100:1 on any range.
1-8. OUTPUT LEVEL.
1-9. The output voltage of the 3312A can be varied from
OV to 10 V peak-to-peak into 50 ohms in four voltage
ranges. A front panel control permits continuous adjust-
ment within each voltage range. The dc level of the main
generator output can be adjusted within the range of
+ 10volts using the front panel offset control. With the
OFFSET in the CAL position the de offset is eliminated.
INFORMATION
1-10. BURST.
1-11. The burst is either a single pulse or a series of pulses
which are rear panel selectable bya slide switch labeled
SINGLE and MULTIPLE. The TRIGGER PHASE control
adjusts the phase of the signal. FREE RUN disables the
burst.
1-12, SYMMETRY.
1-13. The main and the modulation generators have sep-
arate front panel symmetry adjustments which will vary the
symmetry of the output waveforms. The CAL position of
each SYM knob will produce symmetrical waveforms. In
the SWEEP mode, the SYM adjusts the sweep rate, and
CAL selects a 90:10 ramp.
1-14. SPECIFICATIONS.
1-15. Table 1-1 is a complete list of the Model 3312A
critical specifications. These specifications are the perfor-
mance standards or limits against which the instrument can
be tested. Table 1-2 lists some supplemental performance
characteristics which are not specifications, but are typical
characteristics included as additional information for the
user.
1-16. Any changes in specifications due to manufacturing,
design or traceability to the U.S. National Bureau of
Standards are included in Table 1-1 of this manual.
Specifications listed in this manual supersede all previous
specifications for the Model 3312A.
1-17. INSTRUMENT AND MANUAL IDENTIFICATION.
1-18. The instrument serial number is located on the rear
panel. Hewlett-Packard uses a two-section serial number
consisting of a four-digit prefix and a five-digit suffix. A
letter between the suffix and prefix identifies the country
in which the instrument was manufactured (A = USA, G=
West Germany, J = Japan, U = United Kingdom). All
correspondence with Hewlett-Packard should include the
complete serial number.
1-19. If the serial number of your instrument is lower than
the one on the title page of this manual, refer to Section
VIII for backdating information that will adapt this manual
to your instrument.

HP 3312A Specifications

General

Brand	HP
Model	3312A
Category	Inverter
Language	English