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MicroStrain, Inc.
Appendix 1: Host-to-Base Station Communication
RS-232
Communication between the Serial base station or the RS-232 interface of the Analog
base station and the host computer is via a standard RS-232 connection as shown in the
RS-232 Signals Definition and RS-232 Asynchronous Character Format tables.
RS-232 Signals Definition
Signal Name
Direction
TxD
Transmit Data
Host to Base Station
RxD
Receive Data
Base Station to Host
GND Signal Ground
N/A
RS-232 Asynchronous Character Format
Baud Rate
Parity
Data Bits
Stop Bits
Function
Asynchronous Serial Data from Host
Asynchronous Serial Data to Host
Signal Ground Reference
115.2K
None
8
1
USB 2.0
Communication between the USB base station or the USB interface of the Analog base
station and the host computer is via a USB 2.0 compliant connection using a Silicon
Laboratories CP2101 USB-to-UART Bridge chip on the base station supported by
Silicon Laboratories Virtual Communications Port (VCP) drivers installed on the host
PC.
Reference is made to the following Silicon Laboratories documents:
CP2101 Single-Chip USB to UART Bridge Product Brief
CP2101 Data Sheet
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