Campbell Scientific RF400/RF410/RF415 Spread Spectrum Radio/Modem User Manual
Page 83
Appendix L. RF400/RF410 Average Current Drain Calculations
L-5
EXAMPLE #3 (Base RF400/RF410 in “<0.4 mA, 8 sec Delay” standby mode)
The RF400/RF410s in this example are configured for the lowest possible
average standby mode current (Advanced Setup Menu selection 7). The same
amount and frequency of data are collected as in Example 1.
It = Is + Ih + Iq + Ir + Ii
Calculating each term:
Is = table mA value = 0.4 mA
It
≈ 12.4 mA
ms)
8200
length
header"
long
("
mA
10
mA
73
ms
60,000
ms
8200
73
(ms)
T
(ms)
L
Ih
=
=
Ч
=
Ч
=
mA
mA
0.025
mA
73
(ms)
60,000
(ms)
20
Iq
=
×
=
mA
0.026
mA
24
(ms)
60,000
ms]
20
(ms)
45
[
Ir
=
×
+
=
50)
sleep"
to
inactivity
of
time
"
default
(using
mA
2
mA
24
(ms)
60,000
ms
5000
Ii
=
=
Ч
=