Campbell-scientific CR1000 Measurement and Control System Manuel d'utilisateur Page 67

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Vue de la page 66
Section 5. System Overview
67
Main Memory
o 4-MB SRAM
o Battery backed
o OS variables
o CRBasic compiled program binary structure (490 kB maximum)
o CRBasic variables
o Final Storage
o Communications memory
o USR: drive
User allocated
FAT32 RAM drive
Photographic images (See the appendix Cameras
(p. 562) )
Data files from TableFile() instruction (TOA5, TOB1, CSIXML
and CSIJSON)
o Keep
memory (OS variables not initialized)
o Dynamic runtime memory allocation
Note CR1000s with serial numbers smaller than 11832 were usually supplied
with only 2 MB of SRAM.
Additional final data storage is available by using the optional CF (p. 450) card with
a CF module listed in the appendix Card Storage Module
, or with a mass storage
device (see the appendix Mass Storage Devices
).
5.1.8 Data Retrieval
Data tables are transferred to PC files through a telecommunications link
(Telecommunications and Data Retrieval
(p. 348) ) or by transporting a CF card
(CRD: drive) or Campbell Scientific mass-storage media (USB: drive) to the PC.
5.1.8.1 Via Telecommunications
Data are usually transferred through a telecommunications link to an ASCII file
on the supporting computer using Campbell Scientific datalogger support
software (see Datalogger Support Software
(p. 77) ). See also the manual and Help
for the software being used.
5.1.8.2 Via Mass-Storage Device
Caution When removing a CS mass storage device (thumb drive) from the
CR1000, do so only when the LED is not lit or flashing. Removing a Campbell
Scientific mass storage device from the CR1000 while the device is active can
cause data corruption.
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