Teledyne 300M Remote Zero/Span Check or Adjustment RS-232, Power-OnHold Off, 3-10

Teledyne API Model 300M CO Analyzer Instruction Manual, 04033, Rev. A

3.7 Remote Zero/Span Check or Adjustment (RS-232)

Besides Z/S checking from the front panel, automatic Z/S checking, and remote Z/S checking via the contact closure inputs, the analyzer can also be checked via the RS-232 interface. Remote checking via the RS-232 interface supports zero, span, and zero followed by span check, and is identical to remote check via the contact closure inputs. This RS-232 control feature is provided mainly so that a host computer at another location can control the analyzer. See Section 7 for detailed information on using the RS-232 interface to do a remote Z/S check.

3.8 Power-On Hold Off

Whenever the Model 300M is powered on it will go through a HOLD-OFF sequence (see Section 3.9) like it does after a zero/span check.

3.9 Hold Off

Every type of check or adjustment (zero, span, manual, remote, etc.) is followed by a hold off period of from 1 to 20 minutes, during which time the internal data acquisition system (DAS) does not accumulate CO readings into the DAS average. To set the hold off time, press SETUP- MORE-VARSand press NEXT until the variable HOLDOFF_TIME is displayed. To change the setting, enter a number from 1 to 20 and then press ENTR to store the new value or EXIT to leave the hold off time unchanged.

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