Campbell Scientific CR5000 Measurement and Control Module - Manual (Page 141)

Section 7. Measurement Instructions
7-15
Parameter
& Data Type Enter
ExChan Enter the excitation channel number to excite the first measurement.
Constan Alpha
Code Code/
Channel Result
VX1 1 Switched excitation channels, are switched to the excitation
voltage.
VX2 2 for the measurement and switched off between measurements.
VX3 3
VX4 4
ExmV
Constant The excitation voltage in millivolts. Allowable range ± 5000 mV.
XDelay
Specifies the length of time the excitation is enabled, after which, the channel is
set low and the datalogger moves on to the next instruction. If XDelay is set to 0,
the excitation will be on until the end of the program scan or until another
instruction sets an excitation voltage, CAO, or current channel.
7.7 Self Measurements
Battery (Dest)
This instruction reads the battery voltage and stores it in the destination
variable. The units for battery voltage are volts.
PanelTemp (Dest, Integ)
This instruction measures the panel temperature in °C.
Parameter
& Data Type Enter
Dest
Variable or
Array
The Variable in which to store the results of the instruction. When Reps are used the
results are stored in an array with the variable name. An array must be dimensioned to
have elements for all the Reps.
Integ The time spent on integration in microseconds for each of the channels measured.
Constant Entry Integration
0, 200 Flash Conversion; 200 = 2 flash conversions 100 µS apart
and averaged
250; 500-16000 250 µS; multiples of 500: 250 µS integrations starting each
500 µS
_60Hz or 16667 16,667 µS (reject 60 Hz noise)
_50 Hz or 20000 20,000 µS (reject 50 Hz noise)