String Variables

Remote Operation

Programming the Switch Driver

If you want to observe the headers for queries, you must bring the returned data into a BASIC string variable. Reading queries into string variables is simple and straightforward, requiring little attention to formatting.

Example ENTER 709;Result$

places the output of the query in the string variable Result$.

The output of the switch driver may be either numeric or character data depending on what is queried. Refer to the specific commands for the formats and types of data returned from queries.

For the example programs, assume that the device being programmed is at device selector 709. The actual address will vary according to how you have configured the bus for your own application.

Example This example shows the data being returned to a string variable:

10 DIM Rang$[40]

20 OUTPUT 709;“ROUTE:VERIFY:OFF:ALL;”

30 OUTPUT 709;“ROUTE:VERIFY:OFF? (@101:105);”

40 ENTER 709;Rang$

50 PRINT Rang$

60 END

Instrument Status

After running this program, the controller displays a list of 1’s or 0’s separated by commas for every channel in the list.

1,1,1,1,0

Status registers track the current status of the switch driver. By checking the instrument status, you can find out whether an operation has been completed, whether the switch driver is receiving triggers, and query for command and execution errors. Refer to the command *ESR? (Event Status Register Query) on page 4-15for more information.

Agilent 87130A Operating and Service Manual 4-11

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Agilent Technologies 87130A manual String Variables, Instrument Status
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87130A specifications

Agilent Technologies 87130A is a highly regarded network analyzer that has been widely adopted in the field of RF and microwave testing. Known for its versatility and precision, the 87130A is designed for evaluating components and devices in various applications, including telecommunications and electronics.

One of the main features of the 87130A is its frequency range, which spans from 300 kHz to 3 GHz. This broad spectrum allows engineers to test a wide variety of RF components, including amplifiers, filters, and antennas. The analyzer provides vector network analysis capabilities, enabling users to measure both the magnitude and phase of S-parameters, essential for characterizing components effectively.

The instrument is equipped with a powerful internal calibration capability, which ensures accurate measurements by compensating for test fixture errors and other variables. The built-in electronic calibration options further enhance measurement accuracy and repeatability, giving engineers confidence in their results.

Another notable characteristic of the 87130A is its graphical user interface, which is intuitive and user-friendly. The display provides clear visual representations of measurement data, allowing for easy interpretation and analysis. Users can access a variety of measurement functions, such as gain compression, group delay, and return loss, making it a versatile tool for multi-faceted testing.

The Agilent 87130A employs advanced measurement algorithms that improve speed and accuracy. These enhancements facilitate rapid data acquisition, which is particularly beneficial in production environments where time is critical. The analyzer also supports multiple calibration techniques, including through-reflect-match (TRM) and short-open-load (SOL), catering to diverse testing needs.

Connectivity options are abundant, with GPIB, LAN, and USB interfaces, allowing seamless integration into automated test setups. This modularity supports remote operation, making it easier to incorporate the analyzer into various testing environments.

Overall, Agilent Technologies 87130A stands out for its precision, ease of use, and flexibility in RF and microwave testing applications. Its combination of advanced features and robust performance makes it a staple in laboratories, production lines, and research settings, helping engineers and technicians achieve optimal results in their measurement endeavors.
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