Operating Specifications
NOTE |
When cancelling a MIB override, the user may have to reset twice (as described in the steps below) to actually change the STHI hub’s ring speed by the switch.
To return to switch control from a
1.Regain switch control. Regardless of the actual desired ring speed, the user must toggle the switch out of its current position and then reset the STHI to put a
2.Select the desired ring speed. If the Ring Speed switch setting is not yet the desired setting (it may now be the same as the setting dictated by the MIB command), the user must again change the switch setting and reset the STH to complete the change from the
2.2.5Ring Sequence
The ring sequence for the stations on the ring (the order in which stations are logically arranged on the ring) is determined by the physical location of each TCU connection, progressing in ascending stack number and port number order. The sequence is changed each time a station is inserted or
To determine the ring sequence, consider only those ports inserted into the ring. Beginning at the STHI hub’s lowest numbered inserted port, list in ascending numerical order the number of each inserted port. If STH hubs have been stacked to the STHI, then continue by listing those inserted in the STH hub numbered lowest in the stack. Repeatedly move to each next STH and list the inserted ports in numerical order until all ports inserted into the ring have been listed. The order is continuous, wrapping directly from the stack’s last inserted port to the
Hubs that are bypassed from the stack’s common ring must
TIP not be counted in the common ring sequence; they comprise their own separate rings with separate ring sequences.
2.2.6Safety
This equipment is designed in accordance with UL478, UL910, NEC
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