低功耗，宽的工作温度范围
概览
COM220电话用于支持PC与Campbell Scientific数据采集器之间通过固话网络进行通讯。PC端需要一个兼容Hayes标准的modem；COM220在远程站点接入数据采集器。与Campbell Scientific的大多数数据采集器相兼容。
优势与特点
- Wide operating temperature range and low power requirements make it ideal for use at remote sites
- Supports communication rates up to 115.2 kbps between modem and logger. (In practice, data transmission through phone lines is generally constrained to 33.6 kbps.)
- Compatible with most Campbell Scientific data loggers
- Offers both modem enabled (ME) and synchronous device communications (SDC) modes.
- Allows user to set the number of rings before answering call.
图像
相似产品
技术说明
COM220含有1个CS I/O端口，1个电源端子，1个接线端子，和1个RJ-11C插孔。数据采集器通过SC12 或 SC12R-6线缆连接到COM220的CS I/O端口。RJ-11C插孔用于连接带有浪涌保护的固话线。此外，接线端子（GND, RING, TIP）也可用于将COM220通过浪涌保护器连接到固话线。
产品规格
| Transmission Distance or Area | Worldwide |
| Operation | 1200 to 115200 baud digital communications over phone lines |
| Operating Voltage | 12 Vdc |
| Current Drain |
|
| Communication Rate | 9600, 38400, 57600, 115200 bps (between data logger and COM220, and selected by user) |
| Operating Temperature Range | -25° to +50°C (standard) |
| Standards | V.92, K56Flex, V.90, V.34, V.32bis, V32, V23, V22bis, V22, V.21, B212, B103 |
| Registration |
|
| Service Requirements | If not available at the site, phone lines must be installed. |
| Dimensions | 16.5 x 2.5 x 6.6 cm (6.5 x 1.0 x 2.6 in.) |
| Weight | 0.16 kg (0.35 lb) |
兼容性
Please note: The following shows notable compatibility information. It is not a comprehensive list of all compatible products.
数据采集器
| Product | Compatible | Note |
|---|---|---|
| 21X (retired) | ||
| CR10 (retired) | ||
| CR1000X | ||
| CR10X (retired) | ||
| CR200X (retired) | ||
| CR206X (retired) | ||
| CR211X (retired) | ||
| CR216X (retired) | ||
| CR23X (retired) | ||
| CR295X (retired) | ||
| CR300 | ||
| CR3000 (retired) | ||
| CR310 | ||
| CR350 | ||
| CR500 (retired) | ||
| CR5000 (retired) | ||
| CR510 (retired) | ||
| CR6 | ||
| CR800 (retired) | ||
| CR850 (retired) | ||
| CR9000 (retired) |
Additional Compatibility Information
Phone Line/Surge Protection
Typically, a length of phone line is run from the telephone company's junction box to the COM220s surge protector, and then to the Ground, Tip, and Ring terminals on the COM220. Alternately, if adequate surge protection is provided by the telephone company and the junction box supports it, a length of telephone wire with RJ11C connectors (pn 2365) can be run directly from the junction box to the socket on the COM220.
Data Logger Considerations
Default settings are not compatible for non-PakBus data loggers (i.e., CR5000, CR7, retired data loggers). For these data loggers, the DIP switch settings must be changed; refer to the COM220 manual for details.
An SC12 cable is provided for connecting the COM220 with the data logger.
Software
LoggerNet and PC400 software packages support use of the COM220 with our data loggers. Both of these software packages support automated error-checking or user-initiated contacts. LoggerNet also supports scheduled contact times. Our software can run unattended allowing the user to take advantage of lower off-hour telephone rates.
Enclosure Considerations
The COM220 requires a desiccated, non-condensing environment; a Campbell Scientific enclosure is recommended. Grommets and screws are provided to attach the COM220 to the backplate of our enclosures.
相关技术文档
下载
COM220 OS v.05 (671 KB) 23-11-2011
Execution of this download installs the COM220 Operating System on your computer.
Note: The Device Configuration Utility is used to upload the included operating system to the COM220.
常见问题解答
COM220: 14
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Cable runs of that length usually will require a booster of some sort. Contact the local phone company for recommendations.
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Not directly. A data logger needs to be used with it, and the remote caller needs to be running LoggerNet or PC400.
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Typically, software such as LoggerNet or PC400 is needed to connect to a data logger and download the data.
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Campbell Scientific does not recommend VoIP, as it does not work well with data transfers.
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There are several possibilities as to the cause. Contact Campbell Scientific for assistance in determining the specific cause.
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Refer to the “Installation” section of the COM220 Telephone Modem Instruction Manual.
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The COM220 and the radio can coexist on the CS I/O port provided that they are assigned two different SDC addresses.
案例研究
The Channel Tunnel (or Chunnel) connects the United Kingdom with France. It is actually a......阅读更多