Campbell Scientific RF401-series and RF430-series Spread Spectrum Data Radios/Modems - Manual (Page 118)

Appendix L. RF401/RF411 Average Current Drain Calculations
EXAMPLE #6 (Base RF401/RF411 in “<0.4 mA, 8 sec Delay” standby mode)
The RF401/RF411s in this example are configured for the lowest possible
average standby mode current (Advanced Setup Menu selection 7). The same
amount of data are collected as in Example 1, however the frequency of
collection is changed from once a minute to once an hour.
It = Is + Ih + Iq + Ir + Ii
Calculating each term:
Is = table mA value = 0.4 mA
It ≈ 0.6 mA
ms) 8200 length header" long (" mA .17 mA 73
ms 3,600,000
ms 8200
73
(ms) T
(ms) L
Ih = = Ч = Ч = mA
mA 0.0004 mA 73
(ms) 3,600,000
(ms) 20
Iq = × =
mA 0.0004 mA 24
(ms) 3,600,000
ms] 20 (ms) 45 [
Ir = ×
+
=
50) sleep" to inactivity of time " default (using mA 0.033 mA 24
(ms) 3,600,000
ms 5000
Ii = = × =
L-8