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7.3.1
Data
Logging
In order to activate the logging function, the unit must be in (or returned to) the
Ready Mode (see Section 8.2).
If data logging has been enabled, the data will be logged in the next free
(unrecorded) tag or data set. For example, if data had been recorded previously in
tags # 1, 2 and 3 then, when a new run is initiated, the new data will be stored in tag
#4. The data can be separated into number of sets (tags) up to a total of 99.
Any number of individual data points can be stored in a given tag, i.e. up to a
maximum of 13,000 points (i.e. the total memory capacity of the
personal
DataRAM)
assuming that no other data had been logged in other tags. This means that the total
memory capacity of 13,000 data points can be grouped into any number of the
available 99 data sets (tags).
7.3.2
Clearing
of
Memory
Data recorded in the
personal
DataRAM memory can be erased either through an
external PC command using the Thermo Scientfic
p
DR-COM Custom
Communications software provided as a standard accessory, or resetting the
instrument (see Section 8.5). The PC method permits to erase the data in any number
of selected tags, whereas the resetting method results in the deletion of all data stored
in the
personal
DataRAM.
7.3.3 Run Mode Display and Commands
When a measurement run has been initiated (see Section 8.3), the user has the
following display choices:
a) Instantaneous and time-averaged concentrations (both on the same screen);
b) Elapsed run time, and run start time and date (both on the same screen);
c) Maximum displayed concentration from run start, and time/date at which current
maximum occurred;
d) Short term excursion limit (STEL) from run start, and time/date at which current
STEL occurred;
e) Remaining battery charge, and (if logging function is enabled) remaining free
memory.
f) Analog output concentration range (if enabled)
The user can command the termination of the run at any time returning it to the
Ready Mode. To download logged data into a PC, the
personal
DataRAM must be in
the Ready Mode. No changes in the program parameters or operating conditions can
be made while in the Run Mode.
The
personal
DataRAM can be shut off from any of the three operating modes. Even
if shut off while in the Run Mode, the instrument will save all stored data.
