Measurement Computing TempScan/1100 - Manual (Page 71)

TempScan / MultiScan User's Manual 879596 System Configuration 4-13
Acquisition Configuration
Configuring the Acquisition (Non-Burst Mode)
Acquisition Definition
After configuring each channel, it is necessary to configure the acquisition parameters to collect and buffer
scans. An acquisition can consist of the following components:
• Pre-Trigger: The state in which scans are taken before the Trigger (trigger start event) is satisfied.
This component is not required.
• Post-Trigger: The state in which scans are taken after the Trigger (trigger start event) and before the
Stop (trigger stop event). Required, however if the Post-Trigger is set to 0, the Trigger scan is
collected (1 scan) but no Post-Stop scans are collected
• Post-Stop: The state in which scans are taken after the Stop event. This component is not required.
These components constitute a single Trigger Block in the internal memory of the TempScan/1100 or
MultiScan/1200 unit. Every Trigger Block has one and only one Trigger (trigger start event).
Pre-Trigger State
The Pre-Trigger state is the acquisition period before the Trigger (trigger start event), as set via the Set
Trigger Configuration (
T ) command. While the unit is in this state, the TRIGGER LED indicator will
flash. As in any other acquisition state, the alarms and their associated outputs will be updated as follows:
At the fastest rate possible under the current channel configuration, for the TempScan/1100; and at any
programmed Pre-Trigger scan rate up to the fastest rate possible under the current channel configuration,
for the MultiScan/1200.
During this state, the TempScan/1100 or MultiScan/1200 may be configured to collect Pre-Trigger data.
This may be accomplished by specifying a non-zero value for the Pre-Trigger
pre parameter of the Set
Counts ( Y ) command. However, the Pre-Trigger pre value coupled with the current channel configuration
cannot exceed the total amount of available memory.