Appendix E

Digitizers Adjustments

Introduction

This appendix contains procedures for adjusting the calibration constants in the E1563A and E1564A digitizer. See "Calibration Interval" for recommendations on time intervals.

NOTE You must set the module’s "FLASH" and "CALIBRATION CONSTANTS" switches to the "Write Enable" position before you perform any adjustment. This allows modified calibration constants to be stored in memory when you execute CAL:STORe.

Closed-Cover

Electronic

Calibration

The E1563A and E1564A Digitizers feature closed-cover electronic calibration. There are no internal mechanical adjustments. When you input CAL:VALue <voltage>, the digitizer measures the applied voltage when performing a zero or a range gain calibration and then calculates correction factors based on this known input reference value. You store the new correction factors in non-volatile memory using the CAL:STORe command. (Non-volatile memory does not change when power is turned off or after a remote interface reset.)

Calibration Intervals The E1563A and E1564A Digitizers should be calibrated on a regular interval as determined by the measurement accuracy requirements of your application. A 90-day interval is recommended for the most demanding applications, while a 1 year or 2 year interval may be adequate for less demanding applications. Agilent does not recommend extending calibration intervals beyond 2 years in any application.

Whatever calibration interval you select, Agilent recommends complete re-adjustment always be performed at the calibration interval. This will increase the probability the E1563A or E1564A will remain in specification for the next calibration interval. This criteria for readjustment provides the best measure of the digitizer's long-term stability. Performance data measured this way can be used to extend future calibration intervals.

NOTE Agilent Technologies offers a wide variety of calibration and repair services. For information about calibration and repair services, go to http://www.agilent.com and click Products and Services, then click Test and Measurement, and then click Calibration and Repair Services.

Appendix E

Digitizers Adjustments 163

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Agilent Technologies E1563A, E1564A user manual Closed-Cover Electronic Calibration, Appendix E Digitizers Adjustments
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E1563A, E1564A specifications

Agilent Technologies, a prominent player in the field of electronic measurement, offers a range of products designed for various testing applications. Among their notable offerings are the E1564A and E1563A modules. Both models are designed for high-performance testing and measurement, catering particularly to the needs of engineers and technicians in the telecommunications and wireless industries.

The Agilent E1564A is a high-speed data and synchronization generation module, specifically tailored for advanced signal analysis. One of its primary features is its ability to provide a wide range of modulation types, including QPSK and 16QAM, which are essential for testing modern communication systems. The module also boasts a flexible output that supports multiple channels, making it efficient for testing complex systems where multiple data streams are present. Its exceptional performance in generating accurate waveforms enables engineers to perform thorough tests and validations on their devices.

On the other hand, the E1563A module is predominantly focused on protocol analysis and provides engineers with insights into the behavior of their communication systems. This module features comprehensive support for various communication protocols, making it invaluable when debugging and validating designs. Engineers can utilize the extensive measurement capabilities of the E1563A to analyze data integrity and system performance, ensuring that their products meet required specifications.

Both modules leverage advanced technologies from Agilent, ensuring high accuracy and reliability in measurements. They are equipped with powerful processing capabilities that allow for real-time data analysis, a critical aspect when working with high-frequency signals. Furthermore, these modules are designed for seamless integration into Agilent’s test and measurement platforms, enhancing usability and facilitating complex testing scenarios.

In summary, the Agilent E1564A and E1563A modules represent cutting-edge solutions for engineers involved in testing and validating communication systems. With their robust features, including support for various modulation schemes and protocol analysis, these modules enable efficient and accurate measurements. The commitment to quality and precision from Agilent Technologies continues to make these devices essential tools in the industry, helping engineers push the boundaries of innovation in telecommunications.
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