Campbell CS110 - Calibration

CRBasic Example 1: Slow antenna example program
PipeLineMode
Const Mult = 85
Public Delta_E
Public Delta_E_mV2500
Public stat(2)
Public E_field
Public Leakage
DataTable(SlowAnt,1,-1)
Sample(1,Delta_E,IEEE4)
EndTable
BeginProg
CS110 (E_field,Leakage,stat(1),250,Mult,0) 'Measure E_field and leakage
CS110Shutter(stat(2),1) 'Fully open shutter.
Scan(20,msec,0,0)
VoltDiff (Delta_E,1,mV250,8,False,0,250,Mult,0) 'no input reversal.
VoltDiff (Delta_E_mV2500,1,mV2500,8,False,0,250,Mult,0) 'no input reversal.
If Delta_E = NAN Then
Delta_E = Delta_E_mV2500
EndIf
CallTable SlowAnt
NextScan
EndProg
The CS110 can be programmed to operate as a field meter and then switch to operate as a slow
antenna. For example, efield measurements may be desired until they exceed an alarm threshold
of +1500 V/m after which slow antenna (field change) measurements may be desired. The
CR1000 operating system does not allow the Sequential and Pipeline modes to be used in
the same program. For the CS110 to be able to switch between measuring the electric field with
the CS110() instruction and the electric field change in the slow antenna mode, the slow
antenna instructions must be run in the Sequential Mode. One way to accomplish this is to
program the CR1000 to monitor a 1 minute running average of efield and when it exceeds +1500
V/m switch to the slow antenna mode for a fixed amount of time then return to the field meter
mode.
I.4 Calibration
The factory calibration described in Factory calibration of the CS110 (p. 20) applies to the
maximum amplitude of the step response of the CS110 when it is operating as a slow antenna.