Campbell 61302V, Инструкция по эксплуатации

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61302V Barometric Pressure Sensor
If changed from the standard configuration to an analog output,
please note that the software Vout Scale parameter must be set to
agree with the hardware Voltage Output Scale jumper (P3) in
order to achieve calibrated output.
4.1.
Serial Output
Hardware jumper settings and software parameters determine the
RS-232 serial communication format. The Appendix A Wiring
Diagram shows jumper locations and function.
P1 A/B/C sets output format, baud rate, output rate, and
averaging. The table below summarizes P1 configurations.
P3 A/B sets the RS-232 hardware function. AUTO (AA) enables
RS-232 hardware when valid standard RS-232 signals are present
at RX and TX. When not present, the RS-232 hardware is
disabled to save power. FIXED (AB) enables RS-232 hardware at
all times so it can be used with TTL RS-232 signal levels.
P4 A/B configures the terminal connections for RS-232. Both
jumpers must be in position A for RS-232 serial communication.
Format Description
Continuous ASCII
Text
9600 baud
10 sample average
1.8 Hz output
Polled ASCII Text
(standard)
9600 baud
10 sample average
Output when polled
Marine NMEA
4800 baud
10 sample average
1Hz output
Software
Output parameters determined by
software settings
Note that NMEA output is normally specified to work on RS-422
and RS-485 networks. The NMEA output here conforms to the
standard data format but the electrical connection uses RS-232
signal levels.
In POLLED ASCII mode, the unit sends data only after receiving a
poll command. The poll command is Ma! where ‘a’ is the sensor
address value. The standard address is ‘0’ (ASCII 48) for a poll
command of M0! Please see Section 4.3 for details on changing
the polling address. Standard baud rate is 9600 but any of
several available baud rates between 1200 and 38400 may be
used.
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