Teledyne GFC 7001EM operation manual Idas Structure, IDAS Channels, IDAS Data Channel Properties

Advanced Features Model GFC7001E Carbon Dioxide Analyzer

The iDAS can be disabled, as opposed to suspended, only by disabling or deleting its individual data channels.

7.1.2.IDAS STRUCTURE

The iDAS is designed around the feature of a “record”. A record is a single data point. The type of data recorded in a record is defined by two properties:

PARAMETER type that defines the kind of data to be stored (e.g. the average of gas concentrations measured with three digits of precision). See Section 7.1.5.3.

A TRIGGER event that defines when the record is made (e.g. timer; every time a calibration is performed, etc.). See Section 7.1.5.2.

The specific PARAMETERS and TRIGGER events that describe an individual record are defined in a construct called a DATA CHANNEL (see Section 7.1.3). Each data channel is related one or more parameters with a specific trigger event and various other operational characteristics related to the records being made (e.g. the channels name, number or records to be made, time period between records, whether or not the record is exported via the analyzer’s RS-232 port, etc.).

7.1.2.1.iDAS Channels

The key to the flexibility of the iDAS is its ability to store a large number of combinations of triggering events and data parameters in the form of data channels. Users may create up to 50 data channels and each channel can contain one or more parameters. For each channel, the following are selected:

One triggering event is selected.

Up to 50 data parameters, which can be the shared between channels.

Several other properties that define the structure of the channel and allow the user to make operational decisions regarding the channel.

Table 7-2: iDAS Data Channel Properties

PROPERTY	DESCRIPTION	DEFAULT	SETTING RANGE
		SETTING
NAME	The name of the data channel.	“NONE”	Up to 6 letters or digits 1.
TRIGGERING	The event that triggers the data channel to measure	ATIMER	Any available event
EVENT	and store the datum.		(see Appendix A-5).
NUMBER AND	A User-configurable list of data types to be	1	Any available parameter
LIST OF
	recorded in any given channel.	(COMEAS)	(see Appendix A-5).
PARAMETERS
	The amount of time between each channel data	000:01:00	000:00:01 to
REPORT PERIOD			366:23:59
	point.	(1 hour)	(Days:Hours:Minutes)
NUMBER OF	The number of reports that will be stored in the data	100	1 to 1 million, limited by
	file. Once the limit is exceeded, the oldest data is
RECORDS			available storage space.
	over-written.
RS-232 REPORT	Enables the analyzer to automatically report	OFF	OFF or ON
	channel values to the RS-232 ports.
CHANNEL	Enables or disables the channel. Allows a channel	ON	OFF or ON
ENABLED	to be temporarily turned off without deleting it.
CAL HOLD OFF	Disables sampling of data parameters while	OFF	OFF or ON
	instrument is in calibration mode 2.
1 More with APICOM, but only the first six are displayed on the front panel.
2 When enabled records are not recorded until the DAS HOLD OFF period is passed after calibration mode. DAS HOLD OFF SET in
the VARS menu (see Section Error! Reference source not found.).
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