Advanced Instruments 4250, Руководство пользователя

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Supplemental RS-232
Information
Appendix E
The DB-9 RS-232 port on your instrument conforms to the DTE EIA-
232 standard and can reliably communicate over shielded cable up to
10 meters in length, depending on the baud rate you use. Almost every
item of information displayed by your instrument is also transmitted
over the RS-232 port, including test results, all error messages, and
most display data from the diagnostic menu.
Data is transmitted asynchronously as 1 start bit, 8 data bits and 1 stop
bit, with no parity. Each message transmitted from the communication
port is terminated by the sequence, Carriage Return (0D Hex), Line
Feed (0A Hex). Note that your instrument is only capable of outputting
information. At this time, there is no protocol for talking to the instru-
ment.
This product’s serial port output is based on “ASCII” code protocols.
No special codes are used to identify errors, test results, or normal oper-
ational messages. Connection to any data collection or LIMS system
will require the user or a third party to write custom interface software
in order to recognize and parse the text strings of interest. Advanced
Instruments does not maintain a central list of text strings used in the
various versions of software created, nor have we adopted any standard
protocol with respect to the format of these messages. To determine the
format and type(s) of text strings contained in this instrument, users
should follow the instructions in this section and save the output for
evaluation by the interface programmer.
At this time Advanced Instruments has not investigated any third-party
software for use or recommendation for the purpose of importing data