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参数资料
| 型号： | CC-900W-CA5 |
| 厂商： | Copeland Communications Inc |
| 文件页数： | 8/16页 |
| 文件大小： | 0K |
| 描述： | MODEM WIRELESS 900MHZ 5V W/ANT |
| 标准包装： | 30 |
| 频率： | 902MHz ~ 928MHz |
| 数据传输率 - 最大： | 33.6kbps |
| 调制或协议： | FM |
| 应用： | 无线模块 |
| 电源电压： | 3.3 V ~ 5 V |
| 电流 - 接收： | 40mA |
| 电流 - 传输： | 40mA |
| 数据接口： | PCB，通孔 |
| 天线连接器： | 板载，芯片 |
| 工作温度： | 0°C ~ 70°C |
| 封装/外壳： | 模块 |
| 包装： | 散装 |
| 其它名称： | 539-1033 CC-900W-CA5-ND |
Socket Radio
Hardware Flow Control.
CTS low (flow control not asserted) indicates that the Socket Radio is ready to accept data. CTS high (flow control
asserted) indicates that the Socket Radio is not ready to accept data. RTS low (flow control not asserted) indicates
that the Socket Radio may send data to the host. RTS high (flow control asserted) indicates that the Socket Radio
may not send data to the host. The Socket Radio shall be capable of handling a maximum of 17 characters after the
flow control has been asserted. Flow control is used in both online and offline modes.
RS232/UART Output Timeout
The Socket Radio shall attempt to output data via RS232/UART to its host for 30 seconds. If the host flow control
prevents transmission for more than 10 seconds, the RS232/UART data is discarded.
RF Link
RF General Description
The RF transmission is based on packetizing the RS232 data and transmitting the packet of data using source
(Source ID) and destination identification (Destination ID).
Socket Radio ID
Each Socket Radio has a 32-bit identification number that is comprised of a single-byte Group ID and a three-byte
unique Individual ID. The Group ID is used to set up common groups of radios that can be addressed without
limiting the transmission to a specific Socket Radio. Group 0 is reserved for over the air configuration of Group and
Destination IDs. The group ID will be used in future product enhancements.
RF Packet Transmission
A radio will attempt to transmit the payload data until it is acknowledged by the destination radio. The RF packet
transmission is acknowledged when it is correctly received. There shall be a variable re-transmit delay when the first
transmission is not acknowledged. The radio will continue to transmit and look for an acknowledgement for a
maximum of fifty times with a variable time delay between packet retransmissions. The resulting period is a
maximum of 12 seconds for the low speed RF data and 5 seconds for the high speed RF data.
Connection
A connection is a one to one link established between two socket radios. The format of the connection is a switched
circuit configuration. A radio may not be linked to more than one radio at a time. A connection is established by
using the ATDT command to call a specific radio and attempt to connect to that radio. If the called radio receives the
call and is not hard connected to a radio, it will auto answer and connect to the called radio. Once the connection is
established, those two radios maintain that connection. The connection has two forms, a hard connection and a soft
connection. The hard connection may not be broken by a third radio. The soft connection can be broken by a third
radio. A hard connection is defined by a successful RF transmission in the previous minute while a soft connection is
defined by previous link, no unsuccessful RF packet transmission since link inception and greater than 1 minute
since the last successful RF transmission. When there is a valid soft or hard connection, the Carrier Detect indicator
will be active.
RF Data Rate
The normal air link data rate shall be 9.6 kbps. A shorter range RF transmission rate of 92.15 kbps is also
available. After 20 seconds past the last data received, the modem reverts back to low data rate.
RF Channels
There shall be 16 RF channels. Each Channel shall consist of three frequencies. This provides frequency diversity.
Switching between the three channel frequencies shall be transparent to the user. Generally, only one frequency will
be used. However, two other frequencies are available. The channel frequencies are shown in Table 1.
Page 8 of 16
? 2005, Copeland Communications, Inc.
Socket Radio CC-900W Datasheet Rev 4.1
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