参数资料
型号: MTCBA-C1-N2
厂商: Multi-Tech Systems
文件页数: 10/135页
文件大小: 0K
描述: MODEM CDMA RS232 DUAL
标准包装: 10
系列: MultiModem® Cell
功能: 收发器,CDMA,调制解调器
调制或协议: CDMA2000
频率: 800MHz,1.9GHz
应用: Sprint 网络(USA)
接口: RS-232
数据传输率 - 最大: 153.6 kbps
电源电压: 9 V ~ 32 V
其它名称: 881-1147
Chapter 2 – AT Commands Overview
Input Command Syntax
A command line is made up of the following three elements: the prefix, the body, and the termination character.
AT+WSCI=1<CR>
In the example above, AT is the prefix. The modem expects all commands to begin with the letters “AT” or “at”. If
the host application inadvertently begins a command with characters other than “AT” or “at”, the modem will
ignore the characters and will not echo them. The modem will continue to ignore input until the characters “AT” or
“at” are received.
In some power save modes, the modem serial port UART is powered down. See section 19 for sleep related
functionality.
In the example above, the body, +WSCI=1, includes commands and parameters. The termination character
cannot appear in the body.
The termination character may be selected using the ATS3 command. For more information, see chapter 9.12.
The default value is CR (IA5 0x0D).
In addition, the modem supports multiple AT commands embedded in a single AT command string request.
However it is recommended that this feature be used with care. Response from the modem to multiple AT
commands embedded in a single AT command string can be confusing. The modem will only return the status of
the last instructional command of the string.
Other Syntax
Syntax
<>
[]
Definition
Name enclosed in angle brackets is a syntactical element. Do not use the angle
brackets when entering a command line.
Square brackets are used to indicate an optional parameter of a command or an
optional part of a response. Do not use the brackets when entering a command.
Note: In many cases the commas separating parameters are NOT optional when delimiting a list of “optional”
parameters. The commas are necessary to provide parameter matching with the modem parser.
Output Response Syntax
The two characters defined in ATS3 (the terminating character) and ATS4 (Response formatting character) are
used in all responses, reason codes, and result codes. The default values are <CR> (IA5 0x0D) and <LF> (IA5
0x0A) respectively. The following example illustrates how S3 and S4 are used with their default values.
Response with data
AT+CGMI<CR>
<CR><LF>WAVECOM<CR><LF>
<CR><LF>OK<CR><LF>
Result code only:
AT<CR>
<CR><LF>OK<CR><LF>
Parameter Defaults
When applicable, this document identifies default parameter values. Note that within the modem, parameter
values can be either persistent or not persistent. Parameter settings that are NOT persistent are not saved over a
power cycle; therefore, for every power cycle this type of parameter will be reset back to a predefined value. This
predefined value is the listed default.
Values that are persistent are in fact saved over a power cycle. Therefore, the value when the modem is powered
on will be set to the value during the previous power cycle. The default value that is listed for persistent
parameters is the value the modem defaults to when the modem is created at the factory. It should be noted that
Wavecom provides a process to customers where the persistent parameters can be modified at the factory. As a
result, the parameter values might not correspond with this documentation. The factory customization is available
on a per variant basis, and for all variants EXCEPT the generic variant. For more information regarding how to
customize the persistent values at the factory refer to the PRI document.
Multi-Tech Systems, Inc. CDMA C1 AT Commands Reference Guide (PN S000478C)
10
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