Lightning Protection
140
11.3.1
Pre-Power Testing
Before plugging the RJ45 from the lower LPU (or if not fitted the ODU) into the PIDU, check the
following resistances at the RJ45:
1. Check the cable resistance between pins 1&2, 3&6, 4&5 and 7&8 at the RJ45. Check against
column 2 in
. Resistances for each pair should be within 1 ohm of each other.
2. Check the cable resistance between pins 1&3 and 4&7 at the RJ45. Check against columns 3
and 4 respectively in
.
3. Ensure that there is greater than 100K ohms between pins 1&8 for all cable lengths.
4. Ensure that there is greater than 100K ohms between pin 1 and ODU ground for all cable
lengths.
5. Ensure that there is greater than 100K ohms between pin 8 and ODU ground for all cable
lengths.
CAT-5 Length
(Meters)
Resistance
between pins 1&2,
3&6 , 4&5 and
pins 7&8 (ohms)
Resistance
between pins 1&3
(ohms)
Resistance
between pins 4&7
(ohms)
0
0.8
1.0
1.6
10
2.5
2.7
3.3
20
4.2
4.4
5.0
30
5.9
6.1
6.7
40
7.6
7.8
8.4
50
9.3
9.5
10.1
60
11.0
11.2
11.8
70
12.7
12.9
13.5
80
14.4
14.6
15.2
90
16.1
16.3
16.9
100
17.8
18.0
18.6
Table 17
Resistance Table Referenced to the RJ45 at the PIDU Plus
11.3.2
Post-Power Testing
The Correct Operation is as follows:
Содержание MOTOWI 4
Страница 1: ...PTP 500 Series User Guide phn 1115 000v001 ...
Страница 74: ...Web Page Reference 74 Figure 37 Save Configuration File Screen ...
Страница 100: ...Web Page Reference 100 Figure 59 Spectrum Management as seen from the Master ...
Страница 108: ...Web Page Reference 108 Figure 66 Spectrum Management Master Screen With Operational Restrictions ...
Страница 112: ...Web Page Reference 112 Figure 68 Remote Management ...
Страница 165: ...Data Rate Calculations 165 Figure 112 QPSK 0 50 Single Payload Figure 113 QPSK 0 75 Single Payload ...
Страница 166: ...Data Rate Calculations 166 Figure 114 16 QAM 0 50 Single Payload Figure 115 16 QAM 0 75 Single Payload ...
Страница 167: ...Data Rate Calculations 167 Figure 116 64 QAM 0 67 Single Payload Figure 117 64 QAM 0 83 Single Payload ...
Страница 168: ...Data Rate Calculations 168 Figure 118 256 QAM 0 75 Single Payload Figure 119 QPSK 0 50 Dual Payload ...
Страница 169: ...Data Rate Calculations 169 Figure 120 QPSK 0 75 Dual Payload Figure 121 16 QAM 0 50 Dual Payload ...
Страница 170: ...Data Rate Calculations 170 Figure 122 16 QAM 0 75 Dual Payload Figure 123 64 QAM 0 67 Dual Payload ...
Страница 171: ...Data Rate Calculations 171 Figure 124 64 QAM 0 83 Dual Payload Figure 125 256 QAM 0 75 Dual Payload ...
Страница 197: ...Glossary 197 UTP Unshielded Twisted Pair VLAN Virtual Local Area Network ...
