Campbell Scientific CR800 and CR850 Measurement and Control Systems - Manual (Page 470)

Appendix A. CRBasic Programming Instructions
470
SDMSIO4
Controls and transmits / receives data from an SDM‐SIO4 Interface.
Syntax
SDMSIO4(Dest, Reps, SDMAddress, Mode, Command, Param1,
Param2, ValuesPerRep, Multiplier, Offset)
SDMSpeed
Changes the rate the CR800 uses to clock SDM data.
Syntax
SDMSpeed(BitPeriod)
SDMSW8A
Controls and reads an SDM‐SW8A.
Syntax
SDMSW8A(Dest, Reps, SDMAddress, FunctOp, SW8AStartChan, Mult,
Offset)
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. 541).
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. 451)
)
sets math functions to use degrees instead of radians.