9/29/09 E-1
APPENDIX
E
Memory Usage
The System 824 has a memory size of 2 MB. This is generally more than adequate for measurements
performed on a day-by-day basis. However, for applications such as noise monitoring where
measurements are performed and stored automatically over a period of days or weeks, it is important
to be able to calculate the rate at which memory will be consumed in order to download data before the
memory capacity is reached. The information in this Appendix will be useful to accomplish this task.
Memory usage for the LOG and SSA instruments will be presented separately. An example in the
form of a Memory Usage Worksheet will be included for the LOG instrument.
LOG Memory Usage
Each of the 824's History Functions use space out of a common memory. The amount each record
takes is based on the options selected. The following information is provided to assist in determining
the amount of data that can be stored according to the option desired. The example will be show
assuming that all of the memory is available for one measurement though many measurement files
may be stored at one time.
Exceedance Records (Exceedance History Enabled)]
Table E-1: LOG Memory Use: Exceedance Records
To Next Page
Loading...
