Teledyne M300EM User Manual

 

7.2. SETUP  MORE  VARS: INTERNAL VARIABLES (VARS) 

The M300E/EM has several user-adjustable software variables, which define certain operational parameters.  
Usually, these variables are automatically set by the instrument’s firmware, but can be manually redefined using 
the VARS menu.   

The following table lists all variables that are available within the 818 password protected level.  See Appendix 
A-2 for a detailed listing of all of the M300E/EM variables that are accessible through the remote interface. 

Changes the Internal Data Acquisition System (iDAS) 
HOLDOFF timer. 

No data is stored in the iDAS channels during situations 
when the software considers the data to be questionable 
such as during warm-up or just after the instrument returns 
from one of its calibration modes to SAMPLE Mode.   

May be set for 

intervals 
between  

0.5 – 20 min 

CONC_PRECISION 

Allows the user to set the number of significant digits to the 
right of the decimal point display of concentration and stability 
values. 

AUTO, 1, 2,  

3, 4 

Dynamic zero automatically adjusts offset and slope of the 
CO response when performing a zero point calibration during 
an AutoCal (see Section 9.4). 

ON/OFF 

Dynamic span automatically adjusts the offsets and slopes of 
the CO response when performing a slope calibration during 
an AutoCal  (see Section 9.4). 

ON/OFF 

Adjusts the speed of the analyzer’s clock.  Choose the + 
sign if the clock is too slow, choose the - sign if the clock is 
too fast. 

-60 to +60 

s/day 

Selects which gas measurement is displayed when the STABIL
test function is selected. 

CO; CO

2

 & O

2

 

1

  Use of the DYN_ZERO and DYN_SPAN features are not allowed for applications requiring EPA equivalency. 

2

 

 This VARS only appears if either the optional O

2

 or CO

2

 sensors are installed. 

 

 

04288D DCN5752