Bandwidth Limitation

In general, the wireless data transfer rate through a modem is much lower than when the unit is running on a local area network (LAN). For example a GPRS Class 10, Quad-band wireless modem can transfer the data up to 85 K bps. The actual transfer rate can be only a fraction of the ideal speed. This is much lower than a 100Mbits Ethernet LAN. To deal with low bandwidth, the software must be specially designed to be very bandwidth-conscious. For example during the normal operation, the user might want to see some very basic measurement status, such as min/max of the time signals, but not the time signals themselves. If necessary, such as during an alarm state, the time signals can be downloaded for analysis.