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参数资料
| 型号： | GM-205810-000 |
| 厂商： | DeLorme |
| 文件页数： | 16/18页 |
| 文件大小： | 0K |
| 描述： | MODULE GPS RCVR GPS2058 |
| 产品目录绘图： | GM-205810-000 |
| 标准包装： | 1 |
| 频率： | 1575.42MHz |
| 数据传输率 - 最大： | 57.6 kbps |
| 调制或协议： | GPS |
| 应用： | GPS 接收器 |
| 电流 - 接收： | 50mA |
| 数据接口： | PCB，表面贴装 |
| 存储容量： | 16kB 闪存 |
| 天线连接器： | PCB，表面贴装 |
| 电源电压： | 3 V ~ 3.6 V |
| 工作温度： | -40°C ~ 85°C |
| 封装/外壳： | 40 引脚 |
| 包装： | 剪切带 (CT) |
| 其它名称： | GM-205810-000CT |
Command: NMEA Messaging Configuration
Format: $PDME,11,n1,h,n2<cr><If>
Variables: All variables are independent of each other.
n1= Baud Rate, acceptable values
4800 (default)
9600
19200
38400
57600
115200
h = Hex value to enable the corresponding NMEA message
0x01 = GGA
0x02 = GGA5 (default; see note below)
0x04 = GSA (default)
0x08 = GSV (default)
0x10 = VTG
0x20 = GLL
0x40 = RMC (default)
0x80 = RF
0x40000 = RF Test, diagnostic
n2 = 0 (broadcast on UTC second, default)
1 (broadcast after fix)
Return: “$PDME,11,OK” if the command is accepted
Operation: Configures the communications parameters for the NMEA port (only).
Application: Used for customizing the NMEA messages and changing communications rates. (All serial communications uses
<Baud Rate>,8,N,1.) Care should be taken when using higher rates so as to avoid overloading the stream. For example,
the GSV messaging will broadcast three lines of ASCII when a full contingent of satellites is available, so lower rates are
recommended for GSV. The default message selection is given by 0x40+0x08+0x04+0x02 = 0x4E, so an equivalent default
statement is “$PDME,11,4800,0x4E,0”.
Note: GGA5 is equivalent to GGA except that there are 5 decimal places of precision in the location values.
Command: System Control Set A, Bypass Internal 1.8V Regulator
Format: $PDME,12,n<cr><If>
Variables: n = 2
Return: “$PDME,12,OK” if the command is accepted
Operation: Assumes an external 1.8V source is connected to pin 12 of the module. This command bypasses the internal
regulator in favor of the external connection. The bypass is cleared through a hardware reset.
Application: The primary purpose is to save on power. The internal regulator takes 3.3V as its source and the core of the device
operates at 1.8V wasting significant power.
Command: System Control Set A, Invalidate RTC
Format: $PDME,12,n<cr><If>
Variables: n = 3
Return: “$PDME,12,OK” if the command is accepted
Operation: This can be used to invalidate the RTC information obtained from the first satellite.
Application: Diagnostic command; this is a key component in a Cold Start but rarely used alone. It is most effective in the
early stages of establishing a fix because once communications from multiple satellites has been established the module will
assume its RTC is valid.
Command: System Control Set A, Install SBAS Satellite List
Format: $PDME,12,n<cr><If>
Variables: n = 4
Return: “$PDME,12,OK” if the command is accepted
Operation: This is an internal command that moves the SBAS list into the WAAS/SBAS operational code.
Application: This is usually handled automatically but may be of value if WAAS communications is problematic.
Page 16
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