Equipment information:

Hewlett Packard 5328A Frequency counter
Hewlett Packard
Model: 5328A
Date: 1975
Category: Measurement instruments
Group: Frequency counter
Description: Universal Counter
                                    The standard 5328A mainframe measures frequency, period,
period average, time interval, time interval average,
and ratio. A totalize function is also provided. The
capabilities of the instrument are expanded (as shown
in Table 1-3) by installing the options described in
paragraph 1-17. The 5328A provides an 8-digit (9 with
Option 030) LED display, display storage, and leading
zero blanking. Decimal point and unit readouts are
displayed automatically. Two independent selectable
input channels are provided for time interval
measurements. Each input channel has an attenuator,
trigger slope selector, level control, ac-dc coupling,
and an oscilloscope marker output. Rear panel connectors
provide a gate output, a time base output and an input
for an external frequency standard. An ARM switch
on the rear panel allows arming by the signal being
measured (switch OFF) or by another input signal
(switch ON).

These manuals are available for the above equipment:

Hewlett Packard -- 5328A -- User Manual
File name: HewlettPackard-3901-Manual-Page-1-Picture
Manual Type: User Manual
Pages: 67
Size: 2.47 Mbytes (2585274 Bytes)
Language: english
Manual-ID/Number: 05328-90002
Date: April 1975
Quality: Scanned document, all readable.
Upload date:
MD5: c05c4330d997c818f0194d23a7371947
ed2kID: b114f96ccf856a2c2cf164359bf8c794
Downloads: 147 since 09 January 2013
(Including Options 010, 011, 020, 021, 030, and 040)
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Hewlett Packard -- 5328A -- Service Manual
File name: HewlettPackard-6839-Manual-Page-1-Picture
Manual Type: Service Manual
Pages: 154
Size: 18.33 Mbytes (19222521 Bytes)
Language: english
Manual-ID/Number: 05328-90011
Date: April 1976
Quality: Scanned document, all readable.
Upload date:
MD5: 5703ebe4c0ae116f02c91503e9c4f26d
ed2kID: 941a8e7b8ad5546b23b4cb863f886306
Downloads: 94 since 31 May 2015
This manual applies to Hewlett-Packard Model 5328A Universal
Counters with serial prefix number Ί604Α.

This manual provides service information for the
Hewlett-Packard Model 5328A Universal Counter (including
Option 010). A separate Installation and Service Manual is
provided for each option supplied with the 5328A. Operating
information for the 5328A (with options) is covered in the
5328A Users Manual.
1-3. This manual is divided into five sections containing
the following information:
SECTION I GENERAL INFORMATION covers a description of the
counter, options, equipment supplied, accessories available,
and specifications.
SECTION II THEORY OF OPERATION covers a description of the
general operating principles of the counter in reference to
block and schematic diagrams of each assembly.
SECTION III MAINTENANCE contains maintenance and service
information including a list of assemblies, recommended test
equipment, performance checks and adjustments.
Troubleshooting procedures and flowcharts are included in
this section.
SECTION IV REPLACEABLE PARTS provides a complete list of
replaceable parts and information for ordering parts.
manual changes and available options. Field installation of
Option 010 Oven Oscillator is contained in this section.
SECTION VI SCHEMATIC DIAGRAMS contains schematic diagrams
and component locators. A description of reference
designators, signal mnemonics and printed-circuit card
identification is included.
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