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参数资料
| 型号： | DB9-USB-F |
| 厂商： | FTDI, Future Technology Devices International Ltd |
| 文件页数： | 23/26页 |
| 文件大小： | 0K |
| 描述： | MOD USB RS232 EMBEDED RETRO DB9F |
| 产品目录绘图： | DB9-USB-F |
| 特色产品： | DB9-USB-RS232 Modules |
| 标准包装： | 10 |
| 连接器类型： | USB - mini B |
| 触点数： | 9 |
| 类型： | 插座 |
| 技术规格： | RS-232 9 引脚串行 |
| 安装类型： | 通孔，直角，水平 |
| 特点： | D 形体座 |
| 包装： | 散装 |
| 产品目录页面： | 633 (CN2011-ZH PDF) |
| 其它名称： | 768-1063 |
Document Reference No.: FT_000204
DB9-USB Datasheet
Version 2.0
Clearance No.: FTDI# 130
9
Troubleshooting
Ensure the latest device driver is in use. See www.ftdichip.com
If USB devices other than FTDI chips are installed in the system, then check with all manufacturers of
these devices for the latest device drivers.
Section 4 details driver installation. If the user continues to have driver installation issues, then please
refer to the FTDI installation guides http://ftdichip.com/Documents/InstallGuides.htm for additional
details.
Common Windows Device Driver Troubles:
DEVICE TIMES OUT : The default settings of the device driver assume typical data transfers of
hundreds to thousands or more bytes at a given time. Some applications, such as a GPS device,
only send data in short packets, often only a few bytes. If this is the case, it may be necessary
to adjust the driver buffer size and/or latency timer to smaller values. These values can be
adjusted through the Advanced driver options. The buffer size can be reduced to 64 bytes. The
latency timer can be set as low as 2ms. A setting of 1ms will cause unnecessary USB traffic and
could adversely affect data transmission. Advanced driver options are described in
ERRATIC MOUSE POINTER : The device driver defaults to query an attached device to find out
whether it is a mouse or modem, consistent with native COM port operation. Some RS232
peripherals cons tantly send short packets of data, causing the host system to “think” a mouse or
modem has been attached. These short packets will interfere with normal mouse operation
causing the pointer to jump around the screen. If this happens, disconnect the RS232 device and
uncheck the Serial Enumerator option, also found on the Advanced driver options.
COM PORT IN USE : Windows keeps track of all COM port assignments. If multiple FTDIChip
products have been connected to a single system, the COM port number will increase, even if the
other devices are not attached. If the higher COM port assignments are not acceptable for the
application, known unused COM port numbers should be uninstalled according to the FTDI
installation guide: http://ftdichip.com/Documents/InstallGuides.htm .
Copyright ? 2011 Future Technology Devices International Limited
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相关代理商/技术参数 |
参数描述 |
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| DB9-USB-M | 功能描述:界面模块 USB to RS232 Legacy Adapter DB9 Male RoHS:否 制造商:4D Systems 产品:Serial Converters 通道/端口数量: 数据速率: 接口类型:USB, UART 工作电源电压:3.3 V, 5 V 最大工作温度: |
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