Motorola PTP 400 Series Manual De Usuario

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152
 
 
 
CAT-5 
Length 
meters 
Resistance 
pins 4-7 
ohms 
Resistance 
pins 8-5 
ohms 
0 0.0 2.3 
10 1.7 4.0 
20 3.4 5.7 
30 5.1 7.4 
40 6.8 9.1 
50 8.5 10.8 
60 10.2 12.5 
70 11.9 14.2 
80 13.6 15.9 
90 15.3 17.6 
100 17.0 19.3 
Table 18 - Resistance Table Referenced To The RJ45 At The PIDU Plus 
11.3.2 Post-Power Testing 
1  Connect the RJ45 to the PIDU and apply power. The power LED should be illuminated 
continuously. If the power LED does not illuminate unplug the ODU connection from the 
PIDU and check the power LED illumination. If the power LED still does not light then 
check the power source. 
2  The Ethernet LED should be observed starting with 10 slow flashes, 30 seconds after 
powering. This confirms that the ODU has the correct power connections, if the Ethernet 
LED does not light check the wiring to pins 4 & 5 and 7 & 8. 
3  If a computer, switch or router is connected to the LAN side of the PIDU Plus then the 
Ethernet LED should flash with network activity. If the Ethernet LED does not show 
Ethernet activity then the network equipment and the Ethernet cables need to be 
checked, specifically continuity through to the ODU of pins 1 & 2 and 3 & 6.