Driver Card Address

Installing the 87130A Attenuator/Switch Driver

Connecting Switch Drivers to Switches and Attenuators

Set the 4-bit DIP switch on the 84940A driver assembly card to each address as shown in the figure below. (S1 “up” is open or away from the PC board.)

Each card must have a unique address setting. The internal driver is set to card 1. Card 1 shown below is the factory default setting.

Figure 2-10 Eight Driver Card Addresses

Driver Cable and

Switch Cable Length

Limitations

It is impossible to predict the exact configuration of your particular switch matrix. It is assumed that each 84940A driver assembly will be in a separate grounded switch matrix box.

When you connect multiple driver boards and switches at a distance from the 87130A, voltage drop limitations due to switch drive requirements, switch quiescent current, drive transistor drop, cable resistance, and LED current must be taken into account.

Agilent “24 volt” switches are guaranteed to work with a minimum drive voltage of 20 volts. The 87130A puts out a minimum of 22.5 V, and the open drain DMOS output drivers of each channel on the driver board have a drop of 1.0 V. Thus 1.5 V is left for the total voltage drop for the driver board cables and switch wires.

For example, a seventh external driver board, “fully loaded” with seven 87104A switches (maximum 350 mA quiescent current plus 400 mA actuating current) located at the end of the sequence of 70611-60010,

Agilent 87130A Operating and Service Manual 2-11

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Agilent Technologies 87130A manual Driver Card Address, Driver Cable Switch Cable Length Limitations

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.