Operation Theorem
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29
4.2.2.1 Waveform Generation Timing
Six counters interact with the waveform to generate different DAWR timing,
thus forming different waveforms. They are described in Table 4.2.3.
Counter Name
Width
Description
Note
UI_counter
24-bit
U
pdate
I
nterval
,
which defines the
update interval be-
tween each data
output.
U
pdate
I
nterval =
UI_counter /
Time-
base*.
UC_counter
24-bit
U
pdate
C
ounts,
which defines the
number of data in a
waveform.
When value in
UC_counter is
smaller than the size
of waveform pat-
terns, the waveform
is generated
piece-wisely.
IC_counter
16-bit
I
teration
C
ounts,
which defines how
many times the
waveform is gener-
ated.
DLY1_counter
16-bit
Define the delay time
for waveform gen-
eration after the
trigger signal.
Delay Time =
(DLY1_counter /
Clock Timebase)
DLY2_counter
16-bit
Define the delay time
to separate con-
secutive waveform
generation. Effec-
tive only in
Iterative
Waveform Genera-
tion mode
.
Delay Time =
(DLY2_counter /
Clock Timebase)
Trig_counter
16-bit
Define the accept-
able start trigger
count when
re-trigger function is
enabled
Timebase*=40M for DAQ/PXI-2500 Series
Table 4.2.3 Summary of Counters for Waveform Generation
Summary of Contents for NuDAQ DAQ-2500 Series
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