Campbell Scientific RF401-series and RF430-series Spread Spectrum Data Radios/Modems - Manual (Page 115)

Appendix L. RF401/RF411 Average Current Drain Calculations
EXAMPLE #3 (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 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 = = × =
L-5