
12-1 shows the memory requirements of calibration arrays and memory trace arrays
to help you approximate memory requirements. For example, add the following memory
requirements:
n
a full
calibration with 801 points (58 k)
n
the memory trace array (4.9 k)
n
the instrument state (approximately 6 k)
The total memory requirement is 68.9 kbytes. There is sufficient memory to store 29
calibrations of this type. However, the same calibration performed with 1601 points and 2
channels uncoupled would require 255 k bytes:
n
a full
calibration with 1601 points, two channels, uncoupled (230 k)
n
the memory trace array (19 k)
n
the instrument state (approximately 6 k)
2 of these calibrations could reside in memory before the available memory would be
depleted.
12-1.
Memory Requirements of Calibration and Memory Trace Arrays
Variable
Arrays
Response and isolation
l-Port
Interpolated
Power
Memory trace array*
state’
N number of
Same as above in addition to regular
x 2 x number of
Approximate
(Bytes)
10
19
10
19
38
29
68
116
230
This variable is allocated once per active channel.
The number of points that was set at the time the
was turned on.
If the channels are coupled, this number is always 1. If the channels are uncoupled, this number
refers to the number of channels that have power meter
on.
This value may change with
revisions.
The analyzer attempts to allocate memory at the start of a calibration. If insufficient memory
is available, an error message is displayed. It is possible that the CMOS memory might be
fragmented due to the sequence of saving and deleting states of various sizes. So another
alternative would be to store the current state to disk and then press
The
a memory packer which might regain some previously inaccessible memory. If memory is still
inadequate, delete an instrument state and restart the calibration.
Preset State and Memory Allocation
Содержание HP 8753E
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