Campbell TDR200, Инструкция по эксплуатации

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D-1
Appendix D. Terminal Commands
D.1 Introduction
The TDR200 was developed to be interfaced as a virtual COM port via its
physical built-in USB port and to be controlled using third party or user-created
application-specific software. In order to use the virtual COM port feature and
control the TDR200, a compatible USB driver needs to be installed on the host
machine. The USB driver for Windows is available and can be installed via the
PCTDR 3 software. The virtual COM port has the following COM port
settings:
115200 baud rate, 8 bit, 1 stop bit, no parity
The TDR200 terminal mode has an ASCII based command set that can be used
to control the device. A list of available commands is below and can also be
returned by typing HELP , H , or ? inside the terminal mode.
The command list:
SVP Set Vp Value
SNA Set Number of Averages
SNP Set Number of Points
SDI Set Distance (Cable Length)
SWL Set Window Length
SPL Set Probe Length
SPO Set Probe Offset
SCC Set Probe Cell Constant
SREJ Set 50/60 Hz Rejection
SFIL Set Filter Level
SLAA Set Length Apparent Algorithm
SMUX Set SDMX50 Channel
SDEF Set Measurement Parameters to Defaults
DUMP Show Measurement Parameters: Vp, Number of Averages,
Number of Points, Distance, Window Length, Probe Length,
Probe Offset, Probe Cell Constant, 50/60 Hz Rejection, Filter
Level, Length Apparent Algorithm
GLCO Return previously calculated Electrical Conductivity value
GCO
Acquire a new Waveform and return Electrical Conductivity value
GDE Get the Derivative of the last Waveform acquired
GDRV Acquire a new Waveform and return its Derivative
GLMO Get Water Content value from the last Waveform acquired