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c) Activate or deactivate the logging function; activate, select (instantaneous or <br /> STEL),or deactivate alarm; <br /> d) Program parameters or output logged data through a computer. <br /> 7.3 Run and Logging Mode <br /> The Run Mode is the measurement/logging mode. The user can operate the <br /> personalDataRAM in this mode either with or without data logging.For example, <br /> the instrument may be used first as a survey monitor without logging,for walk- <br /> through assessment of an industrial plant,before deciding where to set up the unit <br /> for continuous monitoring and logging. <br /> 7.3.1 Data Logging <br /> In order to activate the logging function, the unit must be in (or returned to) the <br /> Ready Mode (see Section 8.2). <br /> If data logging has been enabled, the data will be logged in the next free <br /> (unrecorded) tag or data set. For example, if data had been recorded previously in <br /> tags#1, 2 and 3 then,when a new run is initiated, the new data will be stored in <br /> tag#4.The data can be separated into number of sets (tags) up to a total of 99. <br /> Any number of individual data points can be stored in a given tag, i.e. up to a <br /> maximum of 13,000 points (i.e. the total memory capacity of the personalDataRAM) <br /> assuming that no other data had been logged in other tags.This means that the <br /> total memory capacity of 13,000 data points can be grouped into any number of the <br /> available 99 data sets (tags). <br /> 7.3.2 Clearing of Memory <br /> Data recorded in the personalDataRAM memory can be erased either through an <br /> external PC command using the MIE pDR-COM Custom Communications software <br /> provided as a standard accessory, or resetting the instrument(see Section 8.5). The <br /> PC method permits to erase the data in any number of selected tags,whereas the <br /> resetting method results in the deletion of all data stored in the personalDataRAM. <br /> 7.3.3 Run Mode Display and Commands <br /> When a measurement run has been initiated (see Section 8.3), the user has the <br /> following display choices: <br /> a) Instantaneous and time-averaged concentrations (both on the same screen); <br /> b) Elapsed run time,and run start time and date (both on the same screen); <br /> c) Maximum displayed concentration from run start, and time/date at which <br /> current maximum occurred; <br /> d) Short term excursion limit(STEL) from run start, and time/date at which <br /> current STEL occurred; <br /> e) Remaining battery charge,and (if logging function is enabled) remaining free <br /> memory. <br /> f) Analog output concentration range (if enabled) <br /> 16 <br />