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Pre- and Post-Power Testing for the PTP 600 Series Bridges
Pre-Power Testing for Motorola PTP 600 Series Bridges
Before plugging in the rJ45 to the Pidu Plus, check the following impedances at the
rJ45:
1.
check the cable resistance between pins 1 and , and 6, 4 and 5, and and 8 at
the rJ45 against column in the table.
2.
check the resistance between pins 1 and and 4 and at the rJ45 against column
and 4 in the table.
caT-5
Resistance
length
pins 1&2, 3&6, 4&5
meters
and 7&8 – ohms
0
10
20
30
40
50
60
70
80
90
100
Post-Power Testing for PTP 600 Series Bridges
1.
connect the rJ45 to the Pidu Plus and apply power. The power Led should be
illuminated continuously. if the power Led does not illuminate, unplug the odu
connection from the Pidu Plus 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, 45 seconds
after powering. if the ethernet Led does not continue to show ethernet activity,
then the odu is working but there is no network connection. check that the
network equipment is connected and that the wiring to pins 1 and and and 6 is
correct.
3.
if the ethernet connection to the network is only 10/100 BaseT, when 1000 BaseT
was expected, it is likely there is a fault with the wiring to pins 4 and 5 and and 8.
4.
if the ethernet Led flashes 10 times but irregularly, a short gap followed by a
long gap, the odu has booted in recovery mode. This may be due to either the
installation wiring or a corrupted main code image in the odu.
Resistance
pins 1&3
ohms
0.8
1.0
2.5
2.7
4.2
4.4
5.9
6.1
7.6
7.8
9.3
9.5
11.0
11.2
12.7
12.9
14.4
14.6
16.1
16.3
17.8
18.0
1
Tech NoTe: LighTNiNg ProTecTioN guide
Resistance Table
Resistance
referenced to the RJ45
between pins
4&7 – ohms
at the PiDU Plus
1.6
3.3
5.0
6.7
8.4
10.1
11.8
13.5
15.2
16.9
18.6
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