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T400 Ozone Analyzer Operator’s Manual Remote Operation
177
MESSAGE is the message content that may contain warning messages, test
measurements, variable values, etc.
<CRLF> is a carriage return / line feed pair, which terminates the message.
The uniform nature of the output messages makes it easy for a host computer to parse
them into an easy structure. Keep in mind that the front panel display does not give any
information on the time a message was issued, hence it is useful to log such messages
for trouble-shooting and reference purposes. Terminal emulation programs such as
HyperTerminal can capture these messages to text files for later review.
8.3. REMOTE ACCESS BY MODEM
The T400 can be connected to a modem for remote access. This requires a cable
between the analyzer’s COM port and the modem, typically a DB-9F to DB-25M cable
(available from Teledyne API with part number WR0000024).
Once the cable has been connected, check to make sure:
DTE-DCE switch is in the DCE position.
T400 COM port is set for a baud rate that is compatible with the modem
modem is designed to operate with an 8-bit word length with one stop bit.
the MODEM ENABLE communication mode is turned ON (Mode 64, see Section
6.2.1).
Once this is completed, the appropriate setup command line for your modem can be
entered into the analyzer. The default setting for this feature is
AT Y0 &D0 &H0 &I0 S0=2 &B0 &N6 &M0 E0 Q1 &W0
This string can be altered to match your modem’s initialization and can be up to 100
characters long.
06870C DCN6332