Optimizing Switching Speed

NOTE

.

Installing the 87130A Attenuator/Switch Driver

Connecting Switch Drivers to Switches and Attenuators

To increase the speed at which your switch matrix operates, refer to the table below to determine which four relays, when connected, will be on the same drive lines.

a.Refer to Figure 2-6to wire your relays into the arbitrary positions of OPEN and CLOSE.

b.Refer to the section “Example Speed Calculation” on page 4-74for an explanation on calculating and minimizing overall switching time.

Switching speed is a function of pulse widths, sensing delays, the state of the chosen channels, the sequence of relays driven and the power supply recovery time. Pulse widths, sensing delays, and which channels are opened or closed are determined by the user, and cannot be predicted here.

The channel number must be preceded by the driver card number. Channels connected to driver card 1 would be numbered 100 to 130; card 2, 200 to 230; card 3, 300 to 330, and so forth up to card 800 to 830. All of these channels are set with the drive enabled.

Table 2-1 Relay Drive Sequence

Drive Line

Connector Locator

Channel List

 

 

 

1

J1, J2, J3, J4

00, 01, 02, 03

 

 

 

2

J5, J6, J7, J8

04, 05, 06, 07

 

 

 

3

J9, J10, J11, J12

08, 09, 10, 11

 

 

 

4

J13, J14, J15, J16

12, 13, 14, 15

 

 

 

5

J17, J18, J19, J20

16, 17, 18, 19

 

 

 

6

J21, J22, J23, J24

20, 21, 22, 23

 

 

 

7

J25, J26, J27, J28

24, 25, 26, 27

 

 

 

8

J29, J30, J31

28, 29, 30

 

 

 

NOTE

The maxium Power Supply Recovery Time should only be required when

 

driving multiple external driver boards with longer interconnect cables. A

 

significant switching speed advantage can be realized if this value is reduced

 

from the 200 msec default. See the command called “TRIGger” on

 

page 4-62and the “Example Speed Calculation” on page 4-74.

 

 

2-10Agilent 87130A Operating and Service Manual

Page 34
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Agilent Technologies 87130A Optimizing Switching Speed, Relay Drive Sequence, Drive Line Connector Locator Channel List

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.