Making Digitizer Measurements

This section provides three examples that show ways to make digitizer measurements and to retrieve data. The three programs are:

•Example: Sampling Using Immediate Triggering

•Example: Triggering Using Internal Level Trigger

•Example: Triggering Using External Triggering

Example: Sampling

Using Immediate

Triggering

This example uses an IMMediate trigger to begin the sampling measurements on two channels and to retrieve the interleaved readings from FIFO memory. Resetting the digitizer sets the data format to ASCII, sample source to timer and trigger source to immediate.

*CLS

*RST VOLT1:RANG 4 VOLT2:RANG 4 SAMP:COUN 20

SAMP:PRET:COUN 10

!Clear the status system !Reset the digitizer !Set ch 1 to 4V range !Set ch 2 to 4V range

!Set sample count to 20 (common to all channels)

!Set pre-trigger count to 10 (common to all channels)

INIT

!Initiate measurements

DATA? 20,(@1,2)

!Read 20 readings from chs 1 & 2

Enter statement

!Enter readings into the computer

Example: Triggering

Using Internal Level

Trigger

This example use the internal level trigger to trigger from an input ramp signal as it crosses zero. The example takes pre-trigger readings and post trigger readings.

Resetting the module sets the data format to ASCii, sample source to TIMer and trigger source to IMMediate. The sample interval and the trigger source are changed from the reset setting.

Resetting the module also sets the trigger level to 0V and the trigger slope to positive. Trigger level and slope commands are resent to reiterate the level and slope of the trigger. In this case, these commands are redundant.

*CLS

!Clear the status system

*RST

!Reset the digitizer

VOLT1:RANG 4

!Set ch 1 to 4V range

SAMP:COUN 7

!Set sample count to 7

 

(common to all channels)

SAMP:PRET:COUN 3

!Set pre-trigger count to 3

 

(common to all channels)

SAMP:TIM 50e-6

!Set sample interval to 50 µsec

TRIG:SOUR INT1

!Set trigger source to a level on

 

channel 1

TRIG:LEV1 0

!Set the trigger level to 0V

TRIG:SLOP POS

!Set trigger slope to positive

INIT

!Initiate measurements

DATA? 7,(@1)

!Read 7 readings from ch 1

Enter statement

!Enter readings into the computer

Chapter 2

Using the Digitizers 43

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Agilent Technologies E1563A, E1564A user manual Making Digitizer Measurements, Example Sampling Using Immediate Triggering
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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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