Campbell Scientific CR3000 Micrologger - Manual (Page 495)

Appendix A. CRBasic Programming Instructions
495
SDMTrigger
Synchronize when SDM measurements on all SDM devices are made.
Syntax
SDMTrigger
SDMX50
Allows individual multiplexer switches to be activated independently of the
TDR100 instruction.
Syntax
SDMX50(SDMAddress, Channel)
TDR100
Directly measures TDR probes connected to the TDR100 or via an SDMX50.
Syntax
TDR100(Dest, SDMAddress, Option, Mux/ProbeSelect, WaveAvg,
Vp, Points, CableLength, WindowLength, ProbeLength,
ProbeOffset, Mult, Offset)
TimedControl
Allows a sequence of fixed values and durations to be controlled by the SDM task
sequencer enabling SDM‐CD16x control events to occur at a precise time. See
the appendix Relay Drivers
(p. 565).
Syntax
TimedControl(Size, SyncInterval, IntervalUnits, DefaultValue,
CurrentIndex, Source, ClockOption
A.6 Processing and Math Instructions
A.6.1 Mathematical Operators
Note Program declaration AngleDegrees() (see Program Declarations
(p. 475)
)
sets math functions to use degrees instead of radians.
A.6.2 Arithmetic Operators
Table 119. Arithmetic Operators
Symbol Name Notes
^ Raise to power
Result is always promoted to a float (p. 147) to avoid problems that
may occur when raising an integer to a negative power. However,
loss of precision occurs if result is > 24 bits.
For example:
(46340 ^ 2) will yield 2,147,395,584 (not precisely correct)
whereas,
(46340 * 46340) will yield 2,147,395,600 (precisely correct)
Simply use repeated multiplications instead of ^ operators when
full 32-bit precision is required.
Same functionality as PWR()
(p. 500) instruction.
* Multiply
/ Divide Use INTDV() (p. 500) to retain 32-bit precision