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 s can.
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 NetSc an i s
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 sc ans 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 Data pull-down menu.