Teledyne API Model 300M CO Analyzer Instruction Manual, 04033, Rev. A
Figure 2-1: Model 300M Front Panel
The mode field indicates the current mode of the analyzer. Usually, it shows "SAMPLE", indicating that the instrument is in the sample mode. Manual span checking or calibration can only be performed by pressing the buttons on the front panel labeled "CALZ", "CALS", or "CAL". Automatic span check only occurs at the preset time. Dynamic span adjust can be performed during automatic or remote span checks. Remote span adjustment is performed via a command from the