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Appendix L. RF401/RF411 Average Current Drain Calculations

EXAMPLE #5 (Base RF401/RF411 in default “<4 mA, 1 sec Delay” standby mode)

The RF401/RF411s in this example are configured for the default average

standby mode current. The same amount of data (10 data points) 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 = 4 mA

ms) 700 header" long("mA 0.014 mA 73

ms 3,600,000

ms 700

(ms) T

(ms) L

Ih ==×=×= mA

It ≈ 4.1 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" toinactivity of time"default (using mA 0.033 mA 24

(ms) 3,600,000

ms 5000

Ii =×=

L-7

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Campbell RF400 Handbuch Seite 115