Pre- And Post-Power Testing For The Ptp 400 Series Bridges - Motorola MOTOWI4 PTP 400 SERIES Technical Note

Pre- and Post-Power Testing for the PTP 400 Series Bridges

Pre-Power Testing for Motorola PTP 400 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  and 4 at the rJ45 against column  in
the table.
2. check the resistance between pins 8 and 5 at the rJ45 against column  in the
table.
3.
check the resistance between pins  and 8 at the rJ45. The value should be
greater than 1000 ohms.
caT-5
length
meters
0
10
20
30
40
50
60
70
80
90
100
Post-Power Testing for PTP 400 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, 0 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 and 5 and  and 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 and  and
 and 6.
Resistance Resistance
pins 4-7 pins 8-5
ohms
0.0
1.7
3.4
5.1
6.8
8.5
10.2
11.9
13.6
15.3
17.0
11
Tech NoTe: LighTNiNg ProTecTioN guide
Resistance Table
referenced to the RJ45
ohms
at the PiDU Plus
2.3
4.0
5.7
7.4
9.1
10.8
12.5
14.2
15.9
17.6
19.3