REAL Format Data: Data are returned as real numbers when the data format is set to REAL (see FORMat[:DATA] REAL). The data are returned in voltage units and no scaling conversion is required as with the PACKed format. Readings are in an interleaved configuration.

IEEE-488.2 Headers: Both PACKed and REAL formats return data preceded by the IEEE-488.2 definite length arbitrary block header. The header is # <num_digits> <num_bytes>, where

# signifies a block transfer

<num_digits> is a single digit (1 through 9) which specifies how many digits (ASCII characters) are in <num_bytes>

<num_bytes> is the number of data bytes which immediately follow the <num_bytes> field

[SENSe:]ROSCillator:EXTernal:FREQuency

Parameters

Comments

[SENSe:]ROSCillator:EXTernal:FREQuency <freq> specifies the externally

supplied timebase frequency. This command is not required unless ROSCillator:SOURce is EXTernal. The default timebase is the INTernal timebase.

Name

Type

Range of Values

Default Value

 

 

 

 

freq

numeric

9.9E3 Hz to 30E6 Hz

N/A

 

 

 

 

Sample Periods: The frequency parameter value is used to calculate sample periods when the sample source is set to TIMer. The sample period must be at least 1.250E-6 seconds (800 kHz), and must be an integral multiple of the timebase period 1.0E-7 seconds when the timebase source is INTernal).

Period values will be rounded to the nearest period the instrument can obtain.

Executable when initiated: NO

Coupled command: NO

Reset (*RST) Condition: frequency = 10.0 MHz

[SENSe:]ROSCillator:EXTernal:FREQuency?

[SENSe:]ROSCillator:EXTernal:FREQuency? queries the external frequency.

Chapter 3

Digitizers Command Reference 89

Page 89
Image 89
Agilent Technologies E1563A, E1564A user manual SENSeROSCillatorEXTernalFREQuency?, 9E3 Hz to 30E6 Hz

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.