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CRA-200 Quick Installation Guide

to the device’s LAN port). Therefore, it is important that you consider the number of total phone lines you will be attaching to each CRA‐200 device in addition to the two lines that are already available. In the sample configuration shown below, where you have one CRA‐200 box with VPN enabled and two additional Internet phone devices for a total of 4 phone lines, a 128 Kbps Internet connection will allow for no more than 4 simultaneous phone calls at a given time when using codec G.729/ Latency Configuration of 60ms (see page 10 for a brief explanation of Codec Latency Configuration).

Recommended Number of Simultaneous Calls

The following chart depicts a general guideline range for the recommended maximum number of simultaneous calls when VPN capability is enabled for each codec/Latency configuration. The amount of allowable simultaneous phone calls and its call quality are directly related to bandwidth availability and its utilization.

DSL

 

 

 

 

 

 

Speed

 

729 90ms

 

729 60ms

 

729 30ms

 

 

 

 

 

 

 

 

 

4-6 max.

 

4-5 max.

 

 

128k

 

calls

 

calls

 

2-3 max. calls

256k

 

10-12

 

8-10

 

5-6

384k

 

17-19

 

13-15

 

8-9

512k

 

23-25

 

18-20

 

11-13

768k

 

36-38

 

28-30

 

17-19

1024k

 

48-51

 

38-40

 

23-26

 

 

 

 

 

 

 

DSL

 

 

 

 

 

 

Speed

 

723 90ms

 

723 60ms

 

723 30ms

 

 

 

 

 

 

 

128k

5-7

4-5

2-3

256k

 

12-14

 

9-11

 

5-6

384k

 

18-20

 

15-17

 

8-9

512k

 

26-28

 

20-22

 

11-13

768k

 

41-43

 

32-34

 

17-19

1024k

 

56-58

 

43-45

 

23-26

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Analog Devices CRA-200 appendix Recommended Number of Simultaneous Calls, Dsl

CRA-200 specifications

Analog Devices has long been at the forefront of innovation in the realm of data converters and signal processing technology. Among its notable offerings, the CRA-200 stands out as a versatile and powerful solution for a variety of applications. This article delves into the key features, technologies, and characteristics that define the Analog Devices CRA-200, showcasing its remarkable capabilities in the industry.

The CRA-200 is designed primarily for precision data acquisition and processing applications, making it an ideal choice for industrial automation, automotive systems, and consumer electronics. It incorporates an advanced architecture that allows for high-performance analog-to-digital and digital-to-analog conversions. One of its main features is the high-resolution capability, which can reach up to 24 bits, enabling it to capture fine variations in signals. This ensures that users get accurate and reliable data, essential for critical decision-making processes.

One of the standout technologies integrated into the CRA-200 is its Sigma-Delta modulation. This technology improves noise performance and increases linearity, providing significant benefits in applications that demand precision. The Sigma-Delta architecture allows for oversampling and noise shaping, which enhances the system's ability to reject out-of-band noise. This is particularly crucial in environments where electromagnetic interference is a concern, ensuring the integrity of the captured signals.

In addition to its high-resolution and low-noise capabilities, the CRA-200 features an integrated temperature sensor, which is a valuable addition for applications that require temperature monitoring alongside data acquisition. The temperature sensor facilitates real-time adjustments and compensations, ensuring optimal performance under varying environmental conditions.

Another characteristic that sets the CRA-200 apart is its connectivity options. The device supports multiple interfaces, including SPI and I2C, providing flexibility for integration into different system architectures. This interoperability simplifies design processes and allows engineers to seamlessly incorporate the CRA-200 into existing systems.

Lastly, the CRA-200 is designed with power efficiency in mind. Its low power consumption makes it suitable for battery-operated devices and reduces the overall energy footprint in industrial systems. With its combination of precision, advanced technology, and efficient design, the Analog Devices CRA-200 continues to be a valuable asset in the ever-evolving landscape of data acquisition and signal processing solutions.