Black Box twister 7000, Инструкция по установке и эксплуатации

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20 User Guide
100Mbps “redundant twister” 7000 Modules:
LH7402C-TX-R2
RJ-45 to Redundant RJ-45 ___________ 100m/100m
LH7403C-MMSC-R2 RJ-45 to Redundant FX multimode SC ___ 100m/2km
LH7404C-SMSC-R2 RJ-45 to Redundant FX singlemode SC __ 100m/15km
LH7403C-MMST-R2 RJ-45 to Redundant FX multimode ST ___ 100m/2km
LH7403C-SMST-R2 RJ-45 to Redundant FX singlemode ST __ 100m/15km
The “redundant twister” modules provide full redundant data paths for
Fast Ethernet devices. The modules incorporate a MAIN port, a PRIMARY
port and a SECONDARY port. The redundancy is provided between the
PRIMARY and SECONDARY ports.
LED Operation:
• PWR: normal operation
• SW: SECONDARY port active at some point; functions in
Dynamic Recovery Mode (DRM) only
• SECONDARY: port is active (PRIMARY is inactive)
• (MAIN) LK: receiving valid link
• (MAIN) AT: receiving data
• (PRIMARY) LK: receiving valid link
• (PRIMARY) AT: receiving data
• (SECONDARY) LK: receiving valid link
• (SECONDARY) AT: receiving data
DIP switch
*
settings:
• TX Switch UP: data from the MAIN port is transmitted simultaneously
on the PRIMARY and SECONDARY ports; data from the active port
(PRIMARY or SECONDARY) is transmitted on the MAIN port.
NOTE: The Link Switch must also be in the UP position in order to
send data out the inactive port.
• TX Switch DOWN (default): data received from the MAIN port is
transmitted on the active port only.
• AUTO Switch UP: the module automatically reverts back to the
PRIMARY port when the primary link is re-established.
• AUTO Switch DOWN (default): once the SECONDARY port
has become active, the module will not revert back to the
PRIMARY port when the primary link is re-established, unless
the SECONDARY link is absent.
• LINK Switch UP: the module sends link on both the
* When setting the DIP switches, the UP position is when the lever of the DIP switch is pushed
furthest away from the circuit board. The DOWN position is when the lever of the DIP switch is
pushed closest to the printed circuit board.