Campbell CR3000 Micrologger, Руководство оператора

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Section 7. Installation
271
power draw would be excessive. Spreading sensors over several SDI-12 terminals
will help reduce power consumption.
Example Power Usage Profile for a Network of SDI-12 Probes
Time into
Measuremen
t Process (s) Command
All
Probes
Awake
Time
Out
Expires
Probe 1
(mA
1
)
Probe 2
(mA
1
)
Probe 3
(mA
1
)
Probe 4
(mA
1
)
Total
mA
Sleep 0.25 0.25 0.25 0.25 1
1
1M!
Yes 120 66 66 66 318
2–14 120 66 66 66 318
15 Yes 120 66 66 66 318
16
1D0!
Yes 66 66 66 66 264
17–29 66 66 66 66 264
30 Yes 66 66 66 66 264
Sleep 0.25 0.25 0.25 0.25 1
1
Current use:
0.25 mA = sleep
66 mA = awake
120 mA = measuring
7.7.16 Compiling: Conditional Code
This feature circumvents system filters that look at file extensions for specific
loggers; it makes possible the writing of a single file of code to run on multiple
models of CRBasic dataloggers.
When a CRBasic user program is sent to the CR3000, an exact copy of the
program is saved as a file on the CPU: drive
(p. 443).
A binary version of the
program, the "operating program", is created by the CR3000 compiler and written
to Operating Memory
(p. 444,
http://www.
).
This is the program version that runs
the CR3000.
CRBasic allows definition of conditional code, preceded by a hash character (#),
in the CRBasic program that is compiled into the operating program depending on
the conditional settings. In addition, all Campbell Scientific dataloggers (except
the CR200X) accept program files, or Include() instruction files, with .DLD
extensions.
Note Do not confuse CRBasic files with .DLD extensions with files of
.DLD type used by legacy Campbell Scientific dataloggers.