068
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DATALOGGER
NI2400
NI2400
069
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DATALOGGER
NI2400
NI2400
• in this page you could find the following fields:
INx
INp UT
(X is 1 or 2)
Using the drop-down menu, it is possible to select
the type of digital input between 4 possibilities:
-
d ISAb Le d
-
TrIgge r
-
rAIN
gAUge
-
w INd
gAUge
The input has to be configured according to the sen
-
sor that is connected.
ACQUISITION
fre QUe NCy
Sampling rate of selected channel (wind gauge, rain
gauge)
Se NSIb ILITy
This field enables only for RAIN GAUGE and AN
-
EMOMETER. If it is well configured, it allows to
transform the counts in engineering units (ex: from
“counts” to “mm”)
e d ge
This field enables only for TRIGGER. It is possible to
select between two entries:
Up
or
d Ow N
. The state
change could be high-low (DOWN) or low-high (UP).
Therefore, if on the input generally there is no voltage
and you want to do an acquisition with the NI2400,
in case a voltage arrives on the input (ex: 5Vdc) it is
necessary to select
Up.
This because you pass from a
low (0Vdc) to a high (5Vdc) state.
UNIT
M e ASUre
This field enables only for RAIN GAUGE and WIND
GAUGE. It indicates the unit of measure of the read
value.
NUM b e r
Of
re Ad INgS
(
TrIgge r
)
Editable field. Numerical value. This field enables only
for TRIGGER. It indicates how many extemporaneous
and consecutive acquisitions the NI2400 has to do
with a trigger. Acquisitions are done independently
from the configured acquisition interval. These data
are stored and so they could be exported in CSV file.
NOTE:
if you enable the digital inputs, the NI2400 is in permanent acquisition. This
means that, even if the NI2400 is in Timed, he will never go in “low consumption” mode.
This situation has to be taken into account in case it is necessary to optimize the con-
sumptions (for example with batteries or solar panel)
Example of digital input IN1 configuration
Here is shown the standard configuration of a digital input configured as
TriggEr
.
• open page
digiTAl
inpuT
configurATion
and select the entry
chAnnElS
configurATion
/
digiTAl
inpuTS
from left menu;
• in field
inpuT
in
1
select
TriggEr
;
• in field
EdgE
select
up
;
NOTE:
in this example it has been selected UP because we supposed there is any voltage
on digital input IN1 and that in case of a trigger, a voltage of 5Vdc is applied.
Figure 57
Figure 58
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