DECODE PRM4 Panduan Pengguna - Halaman 7

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Packet generation and sending

In cases when there is a need for low power consumption of the device (i.e. solar or

battery power) the device can be set into one of the three reduced power consumption

modes by using the ATSM command. When in the reduced power consumption

mode, the receiver is not constantly turned on. It is turned on and off 8 times per

second. Therefore, when using this mode, waiting for all the receivers to become

active may induce the additional transport delay. By using the ATSM command the

reduced power consumption mode of operation can be adjusted to fit the various field

configurations. If the devices with the reduced power consumption are

communicating only with a device in a normal mode, the first group of devices is set

to ATSM2 whereas the device operating in normal mode is set with ATSM1. On the

other hand, if all the devices are operating in low power consumption mode, they

ought to be set with ATSM3.

Important note: When calculating the power budget for the reduced power consumption mode, the

RS232 signal lines should not be omitted. It is recommended that, in these cases, the transmit/receive

signals of the RS232 interface should be switched off when not actively communicating.

Radio modem PRM4 868MHz /User's manual V1.6 / 24.05.2011