HP 202A User Manual

Errata
Title & Document Type: 202A Low Frequency Function Generator
Manual Part Number: N/A
Revision Date: 1956
HP References in this Manual
This manual may contain references to HP or Hewlett-Packard. Please note that
Hewlett-Packard's former test and measurement, semiconductor products and chemical
analysis businesses are now part of Agilent Technologies. We have made no changes to
this manual copy. The HP XXXX referred to in this document is now the Agilent XXXX.
For example, model number HP8648A is now model number Agilent 8648A.
About this Manual
We’ve added this manual to the Agilent website in an effort to help you support your
product. This manual provides the best information we could find. It may be incomplete
or contain dated information, and the scan quality may not be ideal. If we find a better
copy in the future, we will add it to the Agilent website.
Support for Your Product
Agilent no longer sells or supports this product. You will find any other available product
information on the Agilent Test & Measurement website:
www.tm.agilent.com
Search for the model number of this product, and the resulting product page will guide
you to any available information. Our service centers may be able to perform calibration
if no repair parts are needed, but no other support from Agilent is available

HP 202A Specifications

General

Input Voltage	12V DC
Output Voltage	220V AC
Efficiency	90%
Protection Features	Overload, Overheat, Short Circuit
USB Port	5V/2.1A
Cooling	Fan
Frequency	50Hz

Summary

Errata and Product Information

HP References in this Manual

Clarifies HP to Agilent name changes and references within the document.

About this Manual

Provides information on manual availability, potential incompleteness, and scan quality.

Support for Your Product

Details Agilent's discontinued product support and website resources.

SPECIFICATIONS

Technical Parameters

Lists key electrical and performance specifications of the function generator.

Power and Physical Details

Details power requirements, dimensions, and weight for the instrument.

Accessories Available

Lists optional accessories available for the function generator.

SECTION I GENERAL DESCRIPTION

1-1 GENERAL

Provides a comprehensive overview of the Model 202A's features and applications.

SECTION II OPERATING INSTRUCTIONS

2-1 INSPECTION

Procedure for checking the instrument for damage after shipping.

2-2 CONTROLS AND TERMINALS

Identifies and describes the front panel controls and rear output terminals.

2-4 OPERATION

Step-by-step guide for basic instrument operation.

OUTPUT CONFIGURATIONS

Explains single-ended, balanced, and sync output connections.

SECTION III THEORY OF OPERATION

3-2 BI-STABLE CIRCUIT

Details the operation of the flip-flop and comparator circuits.

3-3 LINEAR INTEGRATOR

Explains the circuit responsible for converting square waves to triangular waves.

3-4 SINE SYNTHESIZER AND FUNCTION SELECTOR SWITCH

Describes how sine waves are synthesized from triangular waves.

3-7 POWER SUPPLY

Details the power supply's rectifier and regulated voltage outputs.

SECTION IV MAINTENANCE

4-1 GENERAL

Outlines general procedures and precautions for instrument maintenance.

4-2 POWER SUPPLY

Covers power supply troubleshooting and initial checks.

4-3 FUNCTION GENERATOR

Troubleshooting and analysis for the oscillator circuits.

4-5 OUTPUT AMPLIFIER

Diagnosing and fixing issues with the output amplification stages.

4-13 FREQUENCY RATIO AND CALIBRATION PROCEDURE

Procedure for calibrating frequency ranges and dial settings.

SECTION V TABLE OF REPLACEABLE PARTS

REPLACEABLE PARTS LIST

Lists all components with circuit references, descriptions, and stock numbers.

MANUAL CHANGES

R59 Value Adjustment

Correction for R59 component value and applicable serial numbers.

S2 Range Switch Assembly Change

Update to the S2 range switch assembly part number.

C33 Capacitor Change

Modification to C33 capacitor type and stock number.

R24-R28 Value Deletions

Indicates deletion of specific resistor values in the manual.

CLAIM FOR DAMAGE IN SHIPMENT

WARRANTY

Details the manufacturer's warranty terms and conditions.

SHIPPING

Provides instructions for safely packing and shipping instruments.