Campbell Scientific CC640 Digital Camera - Manual (Page 35)

CC640 Digital Camera
12. Interface Guide for the CR800, CR850, CR1000, or
CR3000
This section contains information for interfacing the CC640 camera to the
CR800, CR850, CR1000, or CR3000 datalogger. The datalogger and the
CC640 both have several different types of communication ports. This
provides different interface options for the user. This includes using the CS
I/O port, the 9 Pin RS-232 Serial Port, the control COM ports (1-4), and RS-
485 if using an MD485 interface.
12.1 Memory Setup
To facilitate the storage of images a CFM100 allows the use of a
CompactFlash card on the CR1000 or CR3000; the CFM100 is not compatible
with the CR800 and CR850. With the CR800 and CR850, memory is allocated
from the datalogger’s internal memory by creating a virtual user drive “USR:”.
Our CR1000 and CR3000 dataloggers can also use this memory allocation
method. With this method, you enter a non-zero value for the parameter
“USR: drive size” to allocate internal memory for the drive. The amount of
memory required will vary depending on each application. A good number to
start with is 524288 bytes.
The following methods can be used to set the drive size of the USR:
• The Device Configuration Utility program
• PakBus Graph
• Editing the parameter from the Status Table
• The datalogger’s optional keypad and display.
12.2 Files Manager
The Files Manager setting on the datalogger facilitates the management of
JPEG files that are received from the camera. The Files Manager allows the
user to specify a name for the files and the number of files kept in a ring
memory type fashion.
The format of the Files Manager setting is as follows:
(AAAA,DDD:NAME.EXT,NNNN)
• AAAA – Is the PakBus address of the camera
• DDD – Is the destination drive on the datalogger
USR for the user drive
CRD for the CompactFlash memory card
• NAME – Is any name string that will be used to name the files
• EXT – The file extension of the incoming file must match. In the case of
the camera this must always be “JPG”.
• NNNN – The number of files kept in the ring memory. This number
should be low enough so that the memory required for the files is less than
what is available in the corresponding drive. However, for the internal
USR drive this would normally be between 3 and 10 images and for CRD
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