User manual

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Cooper Bussmann 945U-E Wireless Ethernet Modem & Device Server User Manual
Rev Version 2.14
945U-E Radio Data Throughput
900MHz Data Rate in Mbps
Signal Strength 20MHz 10MHz 5MHz 2.5MHz 1.25MHz
-72 dBm 22.0 11.0 5.5 2.8 1.4
-75 dBm 20.0 10.0 5.0 2.5 1.3
-81 dBm 17.0 8.5 4.3 2.1 1.1
-84 dBm 11.0 5.5 2.8 1.4 0.7
-88 dBm 9.0 4.5 2.3 1.1 0.6
-91 dBm 6.0 3.0 1.5 0.75 0.38
-90 dBm 5.5 2.8 1.4 0.69 0.34
-91 dBm 4.5 2.3 1.1 0.56 0.28
-92 dBm 3.0 1.5 0.75 0.38 0.19
-91 dBm 2.0 1.0 0.5 0.25 0.13
-93 dBm 1.0 0.50 0.25 0.13 0.06
-95 dBm 0.5 0.25 0.13 0.06 0.03
Throughput and Repeaters
It should also be noted that if using repeaters to extend the range there will be a reduction in throughput for each
repeater hop. The following tables show the drop in throughput for each hop and for each of the channel widths.
Data Throughput Based on Repeater Hops
1 Hop 2 Hop 3 Hop 4 Hop 1 Hop 2 Hop 3 Hop 4 Hop 1 Hop 2 Hop 3 Hop 4 Hop
Signal 20 MHz Channel 10 MHz Channel 5 MHz Channel
-72 22 11 5.5 2.8 11. 5.5 2.8 1.4 5.5 2.8 1.4 .7
-75 20 10 5. 2.5 10. 5. 2.5 1.3 5. 2.5 1.3 .6
-81 17 8.5 4.3 2.1 8.5 4.3 2.1 1.1 4.3 2.1 1.1 .5
-84 11 5.5 2.8 1.4 5.5 2.8 1.4 .7 2.8 1.4 .69 .34
-88 9 4.5 2.3 1.1 4.5 2.3 1.1 .6 2.3 1.1 .56 .28
-91 6 3 1.5 .75 3. 1.5 .75 .38 1.5 .75 .38 .19
-91 4.5 2.25 1.1 .56 2.3 1.1 .56 .28 1.1 .56 .28 .14
-92 3 1.5 .8 .38 1.5 .75 .38 .19 .8 .38 .19 .09
-93 1. .5 .25 .13 0.5 .25 .13 .06 .3 .13 .06 .03
Data Throughput Based on Repeater Hops
1 Hop 2 Hop 3 Hop 4 Hop 1 Hop 2 Hop 3 Hop 4 Hop
Signal 2.5 MHz Channel 1.25 MHz Channel
-72 2.8 1.4 .69 .34 1.4 .69 .34 .17
-75 2.5 1.3 .63 .31 1.3 .63 .31 .16
-81 2.1 1.1 .53 .27 1.1 .53 .27 .13
-84 1.4 .69 .34 .17 .69 .34 .17 .09
-88 1.1 .56 .28 .14 .56 .28 .14 .07
-91 .75 .38 .19 .09 .38 .19 .09 .05
-91 .56 .28 .14 .07 .28 .14 .07 .04
-92 .38 .19 .09 .05 .19 .09 .05 .02
-93 .13 .06 .03 .02 .06 .03 .02 .01