L-1
Appendix L. RF400/RF410 Average
Current Drain Calculations
For remote sites with tight power budgets due to solar or battery power
supplies, the following will help determine average current consumption. The
RF400/RF410’s average current drain is based on:
•
Standby mode of RF400/RF410
•
Data collection interval
•
Number of data points collected
•
“Time of inactivity to sleep” selection
STANDBY MODES
TABLE L-1. Advanced Setup Menu
STANDBY
MODE
STANDBY
AVG RECEIVE
CURRENT
(Is)
DEFAULT
TIME OF INACTIVITY
TO SLEEP
(sec)
“LONG
HEADER”
LENGTH
(L)
0
1
< 24 mA
----
3
2
< 4 mA
5
0 ms
700 ms
4
3
< 2 mA
5
1200 ms
5
< 1 mA
5
2200 ms
6
< 0.6 mA
5
4200 ms
7
4
< 0.4 mA
5
8200 ms
1
Standard Setup menu selection 1
2
Standard Setup menu selection 2
3
Standard Setup menu selection 3
4
Standard Setup menu selection 4
CALCULATIONS
BASE
The average current drain of a
base
RF400/RF410 configured for scheduled
collections has 5 contributors:
1)
The STANDBY AVG RECEIVE CURRENT – Is
2)
The average transmit current of LONG HEADER – Ih
3)
The average transmit current of data request transmissions – Iq
4)
The average receive current of data receptions – Ir
5)
The average receive current of “time of inactivity to sleep” – Ii
Summary of Contents for RF400
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