NEC PASOLINK+, Руководство пользователя

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MTD-PL-028/141005 PASOLINK
+
155 MB 1+0/1+1 SYSTEM
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7. DC-DC CONV
•
Converting ±48 VDC (option ±24 VDC) input voltage to several internal utilizing voltages
5.5 Other Tools and Materials
1. LCT
Local Craft Terminal (LCT) is the simple provisioning and maintenance terminal for
PASOLINK
+
system. LCT connects to the IDU. The LCT can control all functions and
measures all monitor levels.
2. PNMS
NEC can provide an Element Network Management tool (PNMS: PASOLINK Network
Management System). These tools can be used for maintenance and performance
monitoring. These tools consist of software for UNIX or WINDOWS NT
®
OS.
3. Coaxial Cable (Interconnection between IDU and ODU)
The 5D-FB, 8D-FB, 10D-FB or 12D-FB coaxial cable (Low loss 50 ohms) serves as the
interconnection between the transmitter-receiver (ODU) and baseband unit (IDU). The cable
exchanges I/O data signals, DC power, alarm signals, control signals for frequency and TX
power, RX level and ODU primary voltage monitoring signals and a pair of orderwire signals.
Due to the use of different IF (Intermediate Frequency) for TX and RX, a single coaxial cable is
sufficient. This results in faster and easier installation.
4. Power Supply Voltage
The nominal power supply voltage is ±48 VDC. The guaranteed range of the same unit is
sufficient for nominal voltage of ±36 to ±60 V (±48 V) as well. In this way, commonality
between modules is achieved throughout the network even if different DC voltages are applied
at different locations. (±24 VDC power supply is available as an option.)
5. PASOLINK MONITOR (OPTION)
PASOLINK MONITOR is used for receiving signal level monitor and ODU-IDU/ODU-ODU
EOW system. This is an installation tool for antenna direction pointing. (Receiving level can
be measured as voltage by voltmeter without PASOLINK MONITOR.)
6. Head set
Head set is used for EOW system.