NARDA 8718B - Manual (Page 56)

55 Chapter 8 Data Logging
A record contains a header and one or more data points.
To estimate the approximate number of data points and
records (logging runs) that can be stored with the
available memory ...
1. Allocate 33 bytes for each header. A separate header
is used for each record.
2. Allocate 7 bytes for each data point from Mode 1 and
Mode 3 logging.
3. Allocate 14 bytes for each for each spatially averaged
data point from Mode 2 logging. More memory is
used in this mode because both average and peak
values are stored.
4. Determine whether there is sufficient available memory
to perform the desired task. If there is, proceed with
logging as described above.
5. If you determine that there is insufficient memory to
perform the desired task because much of the meter’s
memory has been used, it will be necessary to empty
the memory. Press F4 (QUIT)
6. To download the current memory contents, you must
connect the 8718B to a computer. See Chapter 18,
User's Software.
A I L A L B O R Y
1 0 B A V A I L , 1 5 B k k S E D
M E N U Q U I T
A V
F1 F2 F3 F4
U
E M E M
3. Press F2 (MEM).
4. A screen will appear showing the approximate amount
of available memory and the amount of memory
already used. The bar graph is a rough indicator of
remaining memory capacity as a percentage of total
capacity.