Vaisala Drycap DMT152, Руководство пользователя

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• Serial line outputs asterisk characters " * " instead of measurement data. For example:
Tdf=****** 'C H2O=****** ppm
The analog output levels for the error state are configurable using the AERR command; see
Malfunction Alarm (page 38) . Note that the asterisk characters on the serial line may also
appear during the startup procedure. When the transmitter is in the error state, it will use the
default serial interface settings, regardless of the currently set serial interface mode. If you
have set a different mode with the SERI command, you will have to set your terminal program
to the default settings of 19200 N 8 1 (see Terminal Application Settings (page 29) )
before you can connect to the transmitter in error state.
7.4 Error Codes
The transmitter has error codes that can be displayed on the serial line using the
ERRS
command. See section Display Currently Active Errors (page 48) .
Table 37 Error Codes
Error Code Cause
Ambient temperature error Ambient temperature out of operating range
(probably too hot).
Autocal error Transmitter unable to complete auto-calibration
after several attempts. Can be caused by
continuously changing measurement
environment, problem with supply voltage, or
transmitter malfunction.
Voltage error Supplied operating voltage is too low or high for
reliable operation, or there is a problem with
voltage measurement.
Voltage too low error Supplied operating voltage is too low for reliable
operation.
DMT152 User Guide M210865EN-J
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