Campbell Scientific CDM-VW300 Series Dynamic Vibrating-Wire Analyzer System - Manual (Page 117)

Appendix G. CRBasic Program Library
Dim RFHL(8) = {4000.0,4000.0,4000.0,4000.0,4000.0,4000.0,4000.0,4000.0}
Dim RFHY(8) = { 0.005, 0.005, 0.005, 0.005, 0.005, 0.005, 0.005, 0.005}
Dim RFOF(8) As Long = { 100, 100, 100, 100, 100, 100, 100, 100}
'Configure the CDM-VW300 series device. Use the variable arrays declared above.
CDM_VW300Config (1,CPI_ADDR,0,Enable(),Max_AMP(),F_Low(),F_High(), _
OutForm(),Mult(),Off(), SteinA(),SteinB(),SteinC(), _
RFMB(),RFAB(),RFLL(),RFHL(),RFHY(),RFOF())
DataTable (static,true,-1)
'Static Frequency reading (1Hz output)
Sample (8,StaticFreq(),IEEE4)
'Thermistor reading : Ohms or DegC
Sample (8,Therm(),IEEE4)
'Standard Deviation of dynamic readings
'taken during the most recent second
Sample (8,DynStdDev(),IEEE4)
EndTable
DataTable (dynamic,true,-1)
'Dynamic Frequency (100Hz output)
Sample (8,Freq(),IEEE4)
'Diagnostic code for the current dynamic reading
Sample (8,Diag(),IEEE4)
EndTable
BeginProg
'100 Hz/10msec scan rate
Scan (10,msec,500,0)
CDM_VW300Dynamic (CPI_ADDR,Freq(),Diag()) 'Get dynamic readings
CallTable dynamic
If TimeIntoInterval (0,1,Sec) Then 'Process static data only once per second.
CDM_VW300Static (CPI_ADDR,StaticFreq(),Therm(),DynStdDev()) 'Get static readings.
CallTable static
EndIf
NextScan
EndProg
G.2 Static Measurements
G.2.1 1 Hz Measurement Example — One CDM-VW300, Two
Channels
'===1Hz-1Device2Ch_3-25-13.CR3===
'CR3000 datalogger
'CDM-VW300 vibrating-wire analyzer
'Program to read 1-Hz static data from one CDM-VW300 analyzer measuring two channels
'IMPORTANT -- Ensure that the CPI address coded on the following line matches the address
'reported for the attached analyzer in the DevConfig or DVWTool software.
Const CPI_ADDR = 1 '<<<<<<<<<<<<<
Public StaticFreq(2) 'Static (1Hz output) frequencies
Public Therm(2) 'Thermistor readings
Dim Freq(2) 'dynamic instruction is required
Dim Diag(2) As Long
Dim DynStdDev(2)
Dim Enable(2) As Long = { 1, 1}
Dim Max_AMP(2) = { 0.002, 0.002}
Dim F_Low(2) = { 300, 300}
Dim F_High(2) = { 6000, 6000}
Dim OutForm(2) As Long = { 0, 0}
Dim Mult(2) = { 1.0, 1.0}
Dim Off(2) = { 0.0, 0.0}
G-25