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8.4 Abbreviated Run Start/Stop Instructions <br /> To power-up and start a measurement run without zeroing and without logging, <br /> proceed as follows: <br /> • Key sequentially ON/OFF,NEXT and ENTER. <br /> To terminate run and shut down,proceed as follows starting from the concentration <br /> screen (otherwise key EXIT first): <br /> • Key sequentially EXIT, ENTER,ON/OFF and ENTER. <br /> 8.5 Resetting Procedure <br /> The personalDataRAM memory can be reset through commands entered on its own <br /> keypad (i.e.without requiring a PC). <br /> Resetting accomplishes the following: <br /> • Erases all stored data from memory; <br /> • Resets all parameters and operating conditions to their default values and <br /> conditions;and <br /> • Cancels the zero correction offset. <br /> The procedure to reset the instrument is as follows: <br /> Starting with the unit shut off,press the EXIT and ENTER keys at the same time,and <br /> while holding down those two keys,press ON.The screen will then indicate: <br /> PDR SELF-TEST... and several diagnostic screens will appear in rapid sequence(see <br /> Section 16.0,Resetting/Electronics Checking Mode), ending in the message TESTING <br /> COMPLETE.Shut off unit.When turned on again,the personalDataRAM memory will <br /> have been reset,as described above. <br /> The default values and operating conditions of the personalDataRAM are: <br /> • Logging period(LOG INTRVL): 60 seconds <br /> • Logging status: disabled (LOGGING DISABLED) <br /> • Alarm level:1 mg/m3 <br /> • Alarm status: disabled (ALARM: OFF) <br /> • Analog output:0 to 4 mg/m3 <br /> • Analog output status: disabled (ANALOG OUTPUT:DISABLED) <br /> • Real-time display averaging time (DIS AVG TIME): 10 seconds <br /> • Calibration factor (CAL FACTOR): 1.00 <br /> 22 <br />