LumaSense Technologies INNOVA 1412i - Manual (Page 106)

Chapter 9
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BE6025-15 1412i Photoacoustic Gas Monitor LumaSense Technologies A/S
Page 106 of 202
deleted. To reduce the risk of accidental losing data from Display
Memory, a warning "WARNING: DISPLAY MEMORY WILL BE
DELETED” is displayed whenever a user attempts to perform an
operation with the Monitor, which will result in the deletion of data
from Display Memory.
Data in Display Memory can be copied into the Monitor’s Background
Memory (see Block 5 below) to protect it against accidental deletion.
Alternatively, the data in Display Memory can be printed out by
connecting a printer to the Monitor and transmitting data via the RS
232 interface port of the Monitor (see Chapter 10 ).
The storage space in Display Memory is finite. Once this memory has
been filled by data from a monitoring task any additional data
collected will start to overwrite some of the data already stored
there.
Block 5 – Stored Measurement Data:
By selecting to STORE data when the Monitor is operating in
Memory mode the user can copy data from Display Memory into
Background Memory to “protect” data against accidental deletion
from the Display Memory (see section 9.3.1 for further details).
The storage space in Background Memory is finite 131072
measurement cycles and is exactly the same size as the storage
space available in the Display Memory (see section 8.3 for further
details).
Data which has been stored in Background Memory can be recalled
to the Display Memory. This is done by operating the Monitor in
Memory mode and selecting to RECALL data (see section 9.3.2 ).
When data is “recalled” to Display Memory it is not transferred from
Background Memory to Display Memory, it is only copied into
Display Memory so there is no risk of losing it. In Display Memory the
user can scroll through the data.
Data stored in Background Memory can be deleted by operating the
Monitor in Memory mode and selecting to DELETE data (see section
9.3.3 ).
9.1.4 Effect of a Calibration Task on the Monitor’s Memory
Before calibration of the optical filters in the Monitor the UA numbers
of each of the installed filters is “entered” into the active set-up of
the Monitor. This enables the Monitor to find a set of numerical
parameters, which describe each numbered optical filter (this