HP 3335A Service Manual

Model 3335A
Section I
SECTION |
GENERAL INFORMATION
1-1. INTRODUCTION.
1-2. This Operating and Service Manual contains informa-
tion relative to the installation, operation, performance
testing, adjustment and maintenance of the Hewlett-
Packard Model 3335A Synthesizer/Level Generator. Figure
1-1 shows the Synthesizer/Level Generator and the acces-
sories supplied with the instrument.
1-3. Packaged with this manual is an Operating Informa-
tion Supplement. This is simply a copy of the first three
sections of this manual. This supplement should be kept
with the instrument for use by the operator. Additional
copies of the Operating Information Supplement or the
Operating and Service Manual can be ordered through your
nearest Hewlett-Packard Sales and Service Office (a list of
these offices is provided at the end of this manual). The
part numbers are listed on the title page of this manual.
1-4. Also listed on the title page of this manual following
the Operating and Service Manual and Operating Informa-
tion Supplement part numbers are Microfiche part numbers
for these publications. These numbers can be used to order
4 x 6 inch microfilm transparencies of these publications.
The Microfiche package includes the latest Manual Changes
supplement and all pertinent Service Notes.
1-5. The manual is divided into eight sections, each
covering a particular topic for the operating and service of
the Synthesizer/Level Generator. The topics by section
number are:
Section Topic
Į General Information
II Installation
fil Operation
IV Performance Tests
V Adjustments
VI Replacement Parts
VII Manual Changes
Vill Service
1-6. This section contains general information about the
Model 3335A Synthesizer/Level Generator. The informa-
tion includes an instrument description, specifications,
option and accessory information and instrument and
manual identification.
1-7. DESCRIPTION.
1-8. The Model 3335A Synthesizer/Level Generator is a
wide range source operating over the range of 200 Hz to
80 MHz with output resolution of .001 Hz. The Synthe-
sizer/ Level Generator is capable of making a step frequency
sweep both automatically or manually under operator
control from the keyboard. Output amplitude is selectable
over the range of + 13.01 dBm to - 86.98 dBm for the 50
ohm output and + 11.25 dBm to - 88.74 dBm for the 75
ohm output.
1-9. The 3335A Synthesizer/Level Generator provides
three communications-oriented options in addition to the
standard 50 ohm and 75 ohm output impedance. Options
002 and 004 provide output impedance of 75 ohms un-
balanced, 124 ohms balanced and 135 ohms balanced each
terminated in equivalent WECO output connectors (Option
004 contains miniature connectors). Option 003 provides a
75 ohm unbalanced BNC output and a 150 ohm balanced
BNC pair output. Refer to Table 1-2, General Information,
for the amplitude range of the Options. .
1-10. The Synthesizer/Level Generator develops the output
signal by an indirect synthesis technique. This technique
uses voltage controlled oscillators which are phase-locked to
reference signals generated by a 40 MHz master oscillator in
the reference section. The master oscillator is phase-locked
to an internal temperature-stabilized oscillator or can be
phase-locked to an external reference signal. A 10 MHz
signal derived from the master oscillator is available at a
rear panel connector for use as a reference signal for other
equipment.
1-11. Frequency and amplitude can be selected manually
from the keyboard or externally when connected to the.
Hewlett-Packard Interface Bus (HP-IB). A programmable
device such as a programmable calculator is capable of re-
motely controlling the Synthésizer/Level Generator from
the HP-IB. When operated in this mode, keyboard inputs
are disabled.
1-12. SPECIFICATIONS.
1-13. Table 1-1 is a complete list of the Model 3335A
critical
specifications
that
are
controlled
by
tolerances.
Any changes in specifications due to manufacturing, design
or traceability to the U.S. National Bureau of Standards are
included in Table 1-L.of this manual. Specifications listed in
this manual supersede all previous specifications for the
Model 3335A.
1-14. GENERAL OPERATING INFORMATION.
1-15. Table 1-2 contains general information describing the
major operating characteristics of the 3335A. This informa-
tion does not constitute specifications but is supplemental
operating information.
1-1

HP 3335A Specifications

General

Brand	HP
Model	3335A
Category	Portable Generator
Language	English