10 Fault Finding
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If communication has been lost with the unit at the near end of the link then there may be a
hardware fault with the wiring, network or hardware. Go to the hardware section below. If
communication with the far end of the link is lost then go to the radio section below.
If there are problems suspected with the link hardware the following procedure is
Check the power LED at each end of the link. If the power lights are illuminated go to the
Ethernet section below. If at either end they are not illuminated then
source. If neither is illuminated then there is no voltage on the power wires to the ODU.
Check that the mains power is connected and switched on.
Check that the power LED illuminates if the ODU connector is disconnected at the PIDU
Plus (open the PIDU Plus flap on the left hand side).
If it does illuminate then either the ODU is drawing too much current, or the power wiring to
the ODU is short circuit or the PSU is supplying insufficient power. The likely fault can be
determined by removing the jumper (J906), found inside the removable cover of the PIDU
Plus, and measuring the current taken with an ammeter placed across the 2 jumper pins. This
is normally 10mA without the ODU connected and 300mA to 1A when the ODU is connected.
If it does not illuminate then recheck that power is applied to the PIDU Plus by measuring the
voltage 55V and 0V pads inside the removable cover in the PIDU Plus. Check that
the PIDU Plus is not short circuit by measuring the impedance across the Power connector. Is
19
The power indicator LED should be continually illuminated.
Содержание PTP 54500
Страница 1: ...PTP 500 Series User Guide MOTOROLA POINT TO POINT WIRELESS SOLUTIONS ...
Страница 2: ......
Страница 132: ...8 Web Page Reference 130 Figure 65 Spectrum Management Slave Screen With Operational Restrictions ...
Страница 190: ...14 Data Rate Calculations 188 Figure 111 QPSK 0 50 Single Payload Figure 112 QPSK 0 75 Single Payload ...
Страница 191: ...14 Data Rate Calculations 189 Figure 113 16 QAM 0 50 Single Payload Figure 114 16 QAM 0 75 Single Payload ...
Страница 192: ...14 Data Rate Calculations 190 Figure 115 64 QAM 0 67 Single Payload Figure 116 64 QAM 0 83 Single Payload ...
Страница 193: ...14 Data Rate Calculations 191 Figure 117 QPSK 0 50 Dual Payload Figure 118 QPSK 0 75 Dual Payload ...
Страница 194: ...14 Data Rate Calculations 192 Figure 119 16 QAM 0 50 Dual Payload Figure 120 16 QAM 0 75 Dual Payload ...
Страница 195: ...14 Data Rate Calculations 193 Figure 121 64 QAM 0 67 Dual Payload Figure 122 64 QAM 0 83 Dual Payload ...
Страница 205: ...16 Legal and Regulatory Notices 203 16 4 Exposure See Section 2 Avoiding Hazards ...