Siemens DataNET Hub (DNH) 사용자 설명서
34
•••• Installation
2000585-001
DataNET Hub Signal Equalizer Board
This section sets the switches on the DataNET Hub Signal Equalizer
board. This board is used to equalize the signal amplitude when varying
lengths of copper cable are connected to multiple downlink ports on the
DNH.
board. This board is used to equalize the signal amplitude when varying
lengths of copper cable are connected to multiple downlink ports on the
DNH.
Typically the smallest signal on any DNH port is found on the port with
the longest copper cable. Since, Signal Equalizer boards are placed on
ports with signal levels greater than 3 dB the port with the longest cable
does not require a Signal Equalizer board.
the longest copper cable. Since, Signal Equalizer boards are placed on
ports with signal levels greater than 3 dB the port with the longest cable
does not require a Signal Equalizer board.
This procedure determines the attenuator switch settings. When cable
lengths are unknown, or the cable is other than the recommended cable
(Table 2-1), signals must be compared at the Hub to identify which
Equalizer board settings are needed. See page 37.
lengths are unknown, or the cable is other than the recommended cable
(Table 2-1), signals must be compared at the Hub to identify which
Equalizer board settings are needed. See page 37.
IF you are using …
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Recommended Cable
Page 19
Non Recommended Cable or when
Cable Lengths are Unknown
Cable Lengths are Unknown
Page 37
Refer to Site Wiring Requirements. Table 2-1 (page 19) to determine the
requirements for your site.
requirements for your site.
Description
Instructions
Recommended Cable