932512A / 0114
ORTEC
®
EASY-NIM
™
928 Suite
15
Figure 18. Save Counter/Timer Settings File.
3.3.5.
Example 1: Controlling a Group of Two Counters and One Timer (All Modules Except 928-MCB)
This example explains how to gang two counters and one timer together as a
group
, configure the second counter to
collect the overflow from the first, then set them up for simultaneous enable/disable/reset with the group control
buttons on the lower right of the main screen. Each time the timer preset period elapses, counting stops and the data
from the two counters are displayed on the main screen. In this example, data stops when the timer preset elapses
and does not automatically reset. To continue collecting data, you would click the group’s
Reset
button.
Figure 20 shows the Instrument Settings screen. (Note that the Counter 3 and 4, Timer 2, and Output fields in this
illustration have been faded for clarity; they are not faded onscreen.)
●
In the Counter section, Counter 1’s
Counter input
is set to its counter input and Counter 2 is set to register
the overflow from Counter 1. The
Gate input
s for both counters are set to
Timer 1 Interval
, both are
designated to reset on the
Group 1 Reset
, and both are set to respond to the
Software Group 1 Enable
. In
this example,
Auto reset
is
off
for both counters.
●
In the Timer section, only Timer 1 is in use. A
Time base
and
Time preset
have been selected for a total
acquisition time of 10 seconds. The timer is configured to reset on the
Group 1 Reset
and respond to the
Software Group 1 Enable
as the enable input. Again,
Auto reset
is
off
.
●
The Counter 1 and 2 inputs are configured for the type of external signal on corresponding counter input
BNC.
Figure 21 shows the main screen after a 10-second data acquisition period. (Analogous to the preceding illustration,
the Counter 3 and 4 and Timer 2 fields here have been faded for clarity; they are not faded onscreen.)
The results in this figure show that 10 seconds elapsed, and that no counts registered in Counter 2 because Counter 1
did not overflow during the short acquisition period.
Note the correspondence between the settings in Figure 20 and the input/group/reset/enable codes below the
counter readouts in Figure 21, as well as the time base/preset/reset/enable codes below the timer readout.
Figure 19. Settings .INI File.
