Using Optional Parameters: Optional parameters that are left blank are filled from left to right. Therefore, it is necessary to use the syntax DEFault to note that a particular parameter is to use the default value. For example, to specify a sample rate other than the default, you must declare DEFault for the <readings> parameter or the <rate> parameter value you intended will be used to fill in the <readings> parameter. The command for channel 1 would appear as: CAL:ZERO1 DEF,.002.

Number of Samples and Sample Rate: The number of samples and the sample rate would normally be set to DEFault values to provide averaging over an integral number of either 50 Hertz or 60 Hertz power line cycles. This allows the calibration to cancel out any noise that is periodic with the power supply. Specifying a value other than DEF for <samples> and/or <rate> will result in those values being used for the zero offset calibration.

Executable when initiated: No

Coupled Command: No

Reset (*RST) Condition: None

CALibration:ZERO:ALL?

Parameters

Comments

CALibration:ZERO[<channel>]:ALL? [<samples>][,<rate>] initiates a zero offset calibration for all ranges on the specified channel using an internal short. The command returns “0” if the calibration was successful or returns a non-zero value if an error occurred while calibrating one of the ranges.

Name

Type

Range of Values

Default Value

 

 

 

 

samples

numeric

25 to 4000 DEFault

none

 

 

 

 

rate

numeric

1.25E-6 to reference period

seconds

 

 

* 8,388,607 DEFault

 

 

 

 

 

Non-Zero Error Values: A non-zero return value contains the failed ranges as high bits in the lower word. For example, a return value of 0000000000100001 has a lower word of 00100001 which indicates range 0 (bit 0 = 0.0625V) and range 5 (bit 5 = 64V) failed. The error string in SYST:ERR? contains information about the failure on the highest range that failed (range 5, 64V). If an error occurs on any range, calibration proceeds on to the next range, and the bad range is noted.

Chapter 3

Digitizers Command Reference 61

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Agilent Technologies E1563A, E1564A user manual CALibrationZEROALL?
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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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