Valeport fastCTD, Руководство по эксплуатации

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Communications
©
2021
– Valeport Ltd
Page | 10
5 Communications
The instrument is designed to operate autonomously, with setup and data extraction performed
over Bluetooth connection with a PC before and after deployment. Multiple profiles can be taken by
switching the instrument on/off with the magnetic switch key. Bluetooth auto-pairing and discovery
make connecting to the instrument simple and robust..
The instrument can also be supplied with a traditional SubConn connector with a choice of
communication protocols fitted as standard and selected by pin choice on the output connector:
RS232: Up to 200m cable, direct to serial port
RS485: Up to 1000m cable
Baud Rate: 38400 - 460800
Protocol: 8 data bits
1 stop bit
No parity
No flow control
5.1 Data Telegrams
Real Time Data is output as columns of comma separated ASCII data
Data output is:
"Ticks" Units="1/800s" Counter from start of file, measured in 1/800th's of a
second. To convert to milliseconds, multiply by 800
"Pressure" Units="dBar" Depth or Pressure depending on operating units set in
instrument
"Temperature" Units="°C" Temperature
"Conductivity" Units="mS/cm" Conductivity
"Fluorometer" Units="ug/l" Optional depending on whether and which Fluorometer is
fitted.
“Turbidity” Units=”NTU”
Two fields are transmitted:
optics 1 - Nephelometer | optics 2 -Backscatter
Recorded Data is stored as ASCII text files. It consists of a variable number of colon delimited
header lines depending on the configuration of the instrument, followed by comma separated
ASCII column data as per the real time output.