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Cisco AS5300 - Universal Access Server Руководство
A 10-position rotary switch (labeled IMP SEL) allows you to choose the number of ports that are
terminated as 75-ohm unbalanced lines. The LED labeled 120 at each port indicates the input
impedance of that port. If the LED is on, it indicates the impedance of the port is set to 120
ohms. If the LED is off, it indicates the impedance of the port is set to 75 ohms.
If you are connecting to a port with 75-ohm input impedance, use an RJ-45-to-75-ohm coaxial
cable adapter and plug it into a port with the 120 LED off.
Warning
This equipment is to be installed and maintained by service personnel only as defined by
AS/NZS 3260 Clause 1.2.14.3 Service Personnel.
Warning