DSQC354 BASE CONNECTION ABB

Description

Overview

Essential details：DSQC354 BASE CONNECTION ABB

The main meaning of DB9, DB15, DB25, etc., is the number of pins in the plug in the D-Sub cable assembly. DB9 is 9 pins, DB15 is 15 pins, DB25 is 25 pins, and so on. Of course, in addition to the DB logo, we will also see the back with “HD” symbol, generally HD15, HD26, HD44, HD62, etc., which is also in order to mark the number of pins, but mainly in high-density D-Sub cable components as a difference. → The following is a pin count diagram of the high-density D-Sub interface.

For example, DB25 is used to connect parallel ports, while DB9 is used to connect serial ports of computers (sometimes with adapters). The specific matching needs to be made according to device interfaces. → Below are some D-Sub products with different pins commonly used in professional fields. High Power D-Sub Cable, DB9 Male/Female This innovative D-Sub cable assembly uses 20AWG wire, which is the maximum cable gauge that most D-Sub connectors can support.

The use of this wire gauge wire can not only achieve the maximum load, but also greatly improve the durability of the cable. Professional dual shielding features also include reversible mounting screws for direct panel mounting, custom molded D-Sub cables regardless of adapter length or pin specifications, and DB15 male/male head for maximum protection against electromagnetic/RF interference resulting in data corruption. The double-shielded cables (copper wire braided with aluminum foil mylar) and custom steel inner housing set these cables apart from other off-the-shelf D-sub cables on the market. The molded housing provides durability and increased strength to the mesh tail for use in any environment with high electrical noise near fans, motors or switches

DSQC504

(2) Classification

Working attenuation LA is usually used to describe the amplitude characteristics of filters.

1. According to attenuation characteristics

The low-pass filter allows the low-frequency signal to be transmitted from the input port to the output port with a small attenuation amount. When the signal frequency exceeds the characteristic cutoff frequency, the attenuation amount of the signal will increase sharply, so that the signal amplitude of the output port will decrease

The high-pass filter has the opposite characteristic. When the signal frequency exceeds a specific cutoff frequency, the signal is transmitted from the input port to the output port with a small amount of attenuation.

Band-pass and band-stop filters are defined by a specific lower and upper frequency band, in which the signal attenuator has either low (band-pass) or high (band-stop) attenuation relative to other frequency bands.

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