Product Description:
These USB adapters are intelligent modules which provide a
cost-effective solution for transferring high-speed asynchronous serial
data over USB. The adapters provide easy connectivity between the
computer and standard communication ports or remote serial devices. No
PC reconfiguration, assignment of IRQs, or jumper settings required.
The adapter will be recognized as a USB to Serial Adapter and install
in the system as a standard COM port.
FATURES
- Add a RS-232, RS-422 or RS485 serial port to any USB equipped
computer
- Data transfer rates up to 920K baud
- Built in six foot cable
- Plug-n-Play allowing quick connect/disconnect whenever you need
an
additional serial port
- Ideal for use with portables and laptops
- No available board slots needed
- RoHS Compliant versions available
SYSTEM REQUIREMENTS
- A PC with a minimum of a 75MHz Pentium, or equivalent
- A minimum of 16M bytes of RAM
- One available USB type port compliant with USB1.1
- Drivers are included on our software master CD that normally
ships with ACCES hardware. Supported Operating Systems: Windows 98/SE,
2000, Me, XP, Linux - built-in to kernel 2.4.0+, MAC OS/8.2 and higher
(including X). Driver information is subject to change. Check with
ACCES for updated driver information.
CONNECTIONS TO SYSTEM
The USB adapter is equipped with a USB cable and a USB type A
connector for connection to a computer USB port and a male DB-9 for
connection to a RS-232 or RS-422/485 equipped data or communication
terminal. The USB adapter automatically configures with Windows
Plug-n-Play functionality. This means that once you plug the device
into a computer, Windows will automatically detect the device and
launch an installation wizard.
INDICATORS
One two-color LED indicator displays transmission of data (green) or
reception of data (orange) of the serial port for easy verification of
operation.
Specifications
- Communication speed: 300 to 920K baud
- I/O Addressing: USB Plug-n-Play - auto selection
- 384 byte receive buffer / 128 byte transmit buffer for high data
throughput
- USB Bus Powered (No external power supply required)
- USB 1.1 (can be used with USB 2.0), UHCI / OHCI Specification
Compliant
- Uses FT8U232AM dedicated USB UART
- Full hardware assisted or X-On/X-Off handshaking in RS-232 mode
- Supports Auto-RTS in RS-485 mode
- Interface Connector: DB-9, Male
Ordering Guide and Modes of Operation:
- USB-232: Only RS-232
- USB-422: RS-422 Full Duplex (4-wire)
- USB-485: RS-485 Half Duplex (2-wire). Connections between +Tx and
+Rx pins 2 & 9 and between -Tx and -Rx pins 3 & 1 have to be
made in the external cable.
- USB-422/485:
- RS-422/485 Full Duplex (4-wire). May need external bias on
+Tx and -Tx if this is not provided by another device.
- RS-485 Half Duplex (2-wire) with local echo. Connections
between +Tx and +Rx pins 2 & 9 and between -Tx and -Rx pins 3 &
1 have to be made in the external cable.
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