Driver Boards

Using the Internal Driver

Installing the 87130A Attenuator/Switch Driver

Connecting Switch Drivers to Switches and Attenuators

Connecting Switch Drivers to Switches and Attenuators

The standard 87130A attenuator/switch driver has a single internal driver board capable of driving 31 switches. The attenuator/switch driver may also be connected to a maximum of seven external 84940A driver board which can control and sense switching states for up to 217 additional switches.

The internal driver card is terminated with a 68-pin SCSI II type connector for connecting external switches. The 84941A distribution board should be used to connect the switch driver to switches and attenuators.

The distribution board has 31 4-pin black output connectors numbered J1 to J31 (silkscreened on the circuit side of the PCA), in addition to 31 mating cables which allow a cable harness to be quickly assembled to connect to relays. Refer to Figure 2-6for pin wiring that determines an OPEN or CLOSE condition on each switch.

Each relay (switch) is referred to as a channel by the switch driver. Each channel has its own unique address. The switch driver begins numbering channels at 0 instead of 1. Switch one, wired to J1 on driver card 1, would have a channel address of 100.

1.Connect the internal driver board of the switch driver which is terminated with a 68-pin SCSI II type connector (driver output) to an 84941A distribution board. Use the six foot cable with two male 68-pin SCSI II type connectors that is shipped with the 87130A.

Figure 2-2 Typical Operating Setup Using Internal Driver

2-4Agilent 87130A Operating and Service Manual

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Agilent Technologies 87130A Connecting Switch Drivers to Switches and Attenuators, Driver Boards Using the Internal Driver

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.