Teledyne 200EH/EM

Operating Instructions Teledyne API - Model 200EH/EM Operation Manual

6.7.1. IDAS STRUCTURE

The iDAS is designed around the feature of a “record”, an automatically stored single data point. (e.g.

concentration, PMT signal level, etc.). Records are organized into data channels which are defined by

properties that characterize the:

 Type of date recorded (e.g. concentration, PMT signal level, etc.);

 Trigger event that causes the record to be made (e.g. every minute, upon exiting calibration mode,

etc.);

 How many records to be stored, as well as;

 How the information is to be stored (e.g. average over 1 hour, individual points, minimum value over

last 5 minutes, etc.).

The configuration of each iDAS channel is stored in the analyzer’s memory as a script, which can be edited from

the front panel or downloaded, edited and uploaded to the instrument in form of a string of plain-text lines

through the communication ports.

6.7.1.1. 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 20 data channels. For each channel one

triggering event is selected and one or all of the M200EH/EM’s 25 data parameters are allowed. The number of

parameters and channels is limited by available memory.

The properties that define the structure of an iDAS data channel are:

Table 6-7: iDAS Data Channel Properties

PROPERTY DESCRIPTION DEFAULT SETTING RANGE

NAME The name of the data channel. “NONE” Up to 6 letters or digits1.

TRIGGERING

EVENT

The event that triggers the data channel to

measure and store the datum ATIMER Any available event

(see Appendix A-5).

NUMBER AND

LIST OF

PARAMETERS

A User-configurable list of data types to be

recorded in any given channel. 1 - PMTDET Any available parameter

(see Appendix A-5).

REPORT PERIOD The amount of time between each channel data

point. 000:01:00

000:00:01 to

366:23:59

(Days:Hours:Minutes)

NUMBER OF

RECORDS

The number of reports that will be stored in the

data file. Once the limit is exceeded, the oldest

data is over-written.

100 1 to 1 million, limited by

available storage space.

RS-232 REPORT Enables the analyzer to automatically report

channel values to the RS-232 ports. OFF OFF or ON

CHANNEL

ENABLED

Enables or disables the channel. Allows a channel

to be temporarily turned off without deleting it. ON OFF or ON

CAL HOLD OFF Disables sampling of data parameters while

instrument is in calibration mode2. OFF OFF or ON

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 6.12.)

04521C (DCN5731)