©
National Instruments
37
NI WSN-3214 User Guide and Specifications
battery life. You can select to send Waveforms or User-Defined I/O Variables (UDV). One example of an
application where you can extent the battery life of your NI WSN-3214 is when you take measurements,
but you choose to send only the average or the minimum and maximum of the acquired data as UDVs.
The following timing diagram shows how the NI WSN-3214 acquires and sends data using
NI LabVIEW WSN.
Figure 38.
NI LabVIEW WSN Waveform Acquisition Timing
The following graphs demonstrate estimated battery life under common conditions.
Figure 39.
NI LabVIEW WSN Battery Life Versus Time Intervals, Number of Channels, and Number of Samples
per Waveform with No Waveform Sent Over the Radio
Test Conditions: NI LabVIEW WSN Module, up to 10 User-defined Variables Sent per Radio Interval, 50/60 Hz High Rejection
Acq
u
i
s
ition
R
a
dio time
s
lot where option
a
lly
w
a
veform d
a
t
a
i
s
not
s
ent
W
a
veform
Sa
mple Period
(1 / W
a
veform
Sa
mple R
a
te)
W
a
veform Interv
a
l
R
a
dio
S
end
D
a
t
a
Time Interv
a
l
R
a
dio time
s
lot where
w
a
veform d
a
t
a
or UDV
s
a
re
s
ent
Sa
mple
s
per W
a
veform
B
a
tter
y Lif
e (Y
e
a
r
s
)
2
4
500
400
3
00
200
100
Time Interv
a
l (
S
econd
s
)
0
0
6
600
1 Ch
a
nnel, 10
Sa
mple
s
4 Ch
a
nnel
s
, 1
Sa
mple
1 Ch
a
nnel, 1
Sa
mple
4 Ch
a
nnel
s
, 100
Sa
mple
s
1 Ch
a
nnel, 100
Sa
mple
s
4 Ch
a
nnel
s
, 10
Sa
mple
s
