Omega Vehicle Security OMB-NETSCAN 1500 User Manual download pdf (Page 29)

NetScan User’s Manual ChartView Quick Start and Tutorial 2-11

Acquisition Setup

Parameter

Options

Event Configuration

Trigger:

Set a trigger scan in the Acquisition by using one of the following:

Keyboard

Use Console Trigger dialog box to start trigger scan.

Note: If the Keyboard Trigger is selected the use of Pre-trigger is disabled.

External TTL

Use an external signal to start the trigger scan.

Channel Value -

Use specified value of a given channel.

Alarm -

Use an Alarm value to start the trigger scan.

Absolute Time

Use a time of day to start the trigger scan.

Note: If Absolute Time is selected, the use of Auto Re-arm is disabled.

Stop:

Set a stop scan

in the Acquisition by using one of the above selections or Count (as

specified below). Keyboard isn’t applicable. If a MultiScan/1200 or NetScan is

connected and High-Speed Single-Channel (Burst Mode) is selected, then “Count from

trigger” is the only Stop available for the event configuration.

Count:

Specify a number of scans to be read before a stop scan is set.

Acquisition Parameters

Scan Counts:

Specify the number of scans in an acquisition

Pre-trigger

Post Stop

Average weight:

Average weight can be specified only when in the Normal Mode. The value for

the average weight determines the number of samples to be averaged when in

Normal Mode. Values of 1, 2, 4, and 8 are for high-speed multiple channel

applications for thermocouples and DC voltages where noise filtering is not an

issue.

Values of 16, 32, 64, 128, and 256 are recommended for AC noise rejection.

Scan Intervals:

Time between scans (frequency of scans)

Pre-trigger and Post Stop

Post-trigger

Use one Interval

High Speed Setup:

Allows for channel and scan rate entries for high-speed, single channel mode.

Note:

These parameters cannot be altered while an acquisition is in progress.

5. Review Configuration.

Reviewing the configuration prior to data acquisition is optional; however, you should complete a review at

this time (in the tutorial) to help with your familiarization of ChartView. In an actual application, a review

such as this provides you with a chance to correct configuration errors.

◊

(20)

Device Interface

Check the Interface and Status via the

Device

pull-down menu.

◊

(21)

Channel Configuration

Check channel and alarm configuration settings via the

Channel Configuration Dialog Box

. Access this box through

the

Setup

pull-down menu.

◊

(22)

Acquisition Parameters

Check the acquisition parameters via the

Acquisition Configuration Dialog Box

. This box can be accessed through the

Setup

pull-down menu.

◊

(23)

Data File Parameters

Check Data File Parameters. These parameters can be set from the

Data Destination Dialog Box

(accessible from the

Setup

pull-down menu), and from the

Data File Parameters

selection accessible from the

ata

pull-down menu.

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Omega Vehicle Security OMB-NETSCAN 1500 User Manual Page 29

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