Mastering Pulse Generation with HP 8013B

Table of Contents

1. Introduction
2. The HP 8013b Pulse Generator
3. Features and Specifications
4. Inside the HP 8013b
5. Maintenance and Repairs
6. Common Issues and Solutions
7. Tips for Operating the HP 8013b
8. Comparison with Digital Pulse Generators
9. Calibrating the HP 8013b
10. Conclusion

Introduction

In this article, we will be discussing the HP 8013b Pulse Generator, a dual output generator that provides positive and negative pulse trains simultaneously. We will explore its features and specifications, take a closer look inside the device, and discuss common maintenance and repair procedures. Additionally, we will provide helpful tips for operating the HP 8013b and compare it with digital pulse generators. Lastly, we will cover the process of calibrating the device to ensure accurate results. So, let's dive in and learn more about the HP 8013b Pulse Generator.

The HP 8013b Pulse Generator

The HP 8013b Pulse Generator is a versatile device that offers dual output capabilities, allowing users to generate positive and negative pulse trains simultaneously. It comes with a range of inputs and outputs, including trigger inputs, gating inputs, and a trigger output. The generator features slide switches for adjusting pulse period, pulse delay, pulse width, and amplitude. The Vernier controls enable fine-tuning within the specified ranges. Users can also adjust offsets for added flexibility. Additionally, there is a switch to toggle between normal and complementary duty cycles of the pulse train.

Features and Specifications

The HP 8013b Pulse Generator boasts a variety of features and specifications that make it suitable for a wide range of applications. It offers a pulse period adjustment range from one microsecond to 0.1 milliseconds, allowing for precise timing control. The pulse delay can be adjusted within the same range using the Vernier controls. The amplitude can be set from 0.2 volts to 10 volts, with further fine-tuning available. With adjustable offsets of up to two and a half volts, users can customize the output to meet their specific requirements. The generator also includes external triggering input and AC power plugs for convenience.

Inside the HP 8013b

Upon opening the HP 8013b Pulse Generator, you will find the A5 board, which houses the pulse generator circuitry. The board consists of discrete transistors without any integrated circuits, ensuring robust performance. On the A6 board, you will find a few power transistors and voltage regulators responsible for maintaining stable output voltages. During the inspection, a repair history card was discovered, indicating that the device had undergone repairs in the past for an issue related to the A6 board's driver transistor. This speaks to the reliability of the generator, which has held its calibration remarkably well since its last calibration in September 1990.

Maintenance and Repairs

Like any electronic device, the HP 8013b Pulse Generator requires regular maintenance to ensure optimal performance. One common issue with these units is the slide switches becoming noisy over time. A simple solution is to clean these switches with a good control cleaner, restoring their functionality. In some instances, the switches may need to be replaced if they fail completely. It is recommended to inspect and clean the controls periodically to prevent any operational issues.

Common Issues and Solutions

Aside from the noisy slide switches, the HP 8013b Pulse Generator is known for its reliability. However, there may be occasional issues that arise during operation. It is important to ensure that the pulse widths are narrower than the pulse period to avoid distorted waveforms. Users must be mindful of the specified ranges and zones when adjusting the pulse width, pulse delay, and Vernier controls. By staying within the recommended parameters, confusion in pulse generation can be avoided. Additionally, if any unexpected behavior is observed, double-checking the calibration and power supply rails is advisable.

Tips for Operating the HP 8013b

Operating the HP 8013b Pulse Generator requires a good understanding of its functionality. Unlike digital pulse generators, the HP 8013b does not automatically set limits for pulse widths and pulse periods. Users must manually ensure that the parameters are within the valid ranges to avoid erroneous results. It is crucial to refer to the user manual for guidance and be familiar with the switch settings and Vernier controls. Regular calibration checks are also essential to maintain accuracy and reliability.

Comparison with Digital Pulse Generators

While the HP 8013b Pulse Generator offers robust performance, it is worth comparing it to digital pulse generators on the market. Digital pulse generators typically have built-in programmable features that automatically set limits for pulse widths and pulse periods, eliminating the need for manual adjustments. They also tend to provide more precise control and offer a wider range of functions. However, the HP 8013b Pulse Generator's simplicity, reliability, and cost-effectiveness can still make it a desirable choice for certain applications.

Calibrating the HP 8013b

For accurate results, periodic calibration of the HP 8013b Pulse Generator is essential. Calibration ensures that the device is operating within specified tolerances and maintains its accuracy. It is recommended to follow the calibration procedures outlined in the user manual. This typically involves adjusting various potentiometers for pulse width, pulse period, amplitude, and offsets. It is advisable to use calibrated test equipment and consult with a qualified technician if needed. By regularly calibrating the pulse generator, users can rely on precise and consistent output.

Conclusion

The HP 8013b Pulse Generator is a reliable and versatile device that provides dual output capabilities for generating positive and negative pulse trains simultaneously. Its straightforward design and user-friendly controls make it an excellent choice for various applications requiring precise timing control. While occasional maintenance may be required to address noisy slide switches, the generator has shown remarkable stability over time. By adhering to the specified ranges for pulse widths and pulse periods, users can avoid confusion in pulse generation. Regular calibration checks will further ensure accuracy and reliability. Whether used in a professional setting or for personal projects, the HP 8013b Pulse Generator is a valuable tool in the field of electronics.