Campbell RF451, Инструкция по эксплуатации

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RF451 Spread Spectrum Radio
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TABLE 7-1. Transmit Power Settings
RF Transmit
Power Setting RF Power (dBm) RF Power (mW)
10 30.0 1000
9 29.5 900
8 27.8 600
7 26.8 480
6 25.2 330
5 23.6 230
4 21.5 140
3 19.0 80
2 15.4 35
1 10.0 10
0 7.0 5
7.2.9 Low Power Mode
This setting allows a multi-point slave to consume less power. This is achieved
primarily by dimming the transceiver LEDs. When set to 2 through 31, the
transceiver will sleep between slots. For example, at a setting of 2, the
transceiver sleeps 1 out of 2 slots; at a setting of 3, the transceiver sleeps 2 out
of 3 slots, and so on.
TABLE 7-2 shows the changes at different Low Power Mode settings. The
actual current draw depends on many factors. The table below gives only a
qualitative indication of supply current savings. A low number reduces latency
and a high number reduces current consumption. An optimum setting
(balancing latency and power savings) is 2 or 3.
TABLE 7-2. Low Power Mode Settings
Setting Description
0 Disabled
1 Transceiver remains awake, listening for the master radio’s
transmission on every slot.
2 Transceiver sleeps every other slot
3 Transceiver sleeps 2 of 3 slots
4–31 Transceiver sleeps the number of slots corresponding to the
setting. For example, with a setting of 31, the transceiver sleeps
30 of 31 slots.