Juniper Allegro CE Owner's Manual page 255

Scanner Setup
The Scanner tab is used to configure the operation of the scan engine.
Target Time
The Target Time option allows you to set the amount of time the target
beam is on before a scan is initiated.
The Target Time box shows the time, in seconds, that the target beam
is on. The scroll buttons allow you to set the amount of time the target
beam is on before a scan is initiated. The Target Time can vary from
0.0 to 9.9 seconds, in 0.1 seconds increments.
Setting the Target Time at 2.0 means that the target beam remains on
for 2.0 seconds and then turns off as the scan beam turns on. The
scanner takes approximately .5 seconds to focus the target beam.
Because of this, it is recommended that the minimum target time be set
to 0.5 or longer than the desired target time.
Scan Time
The Scan Time option allows you to set up the amount of time the scan
beam remains on to perform a bar code scan. The Scan Time window
shows the time, in seconds, that the scan beam is on. The scroll
buttons allow the user to set the amount of time the scan beam is on.
The Scan Time can vary from 0.0 to 9.9 seconds, in 0.1 seconds
increments.
Expansion Pods Page 8-17