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Switches
Active/Passive Switches
A(ctive) and P(assive) switches are provided for the Ring In port and for
the Ring Out port for connection to active ( “A” ) or to passive (“P”) hubs.
ZDL Switch
The ZDL Switch allows selection of automatic speed detection. NOTE:
The default position is ON. The OFF position is used for connecting non-
802.5 compliant equipment, such as the Hewlet Packard token ring tester.
NOTE: The StackMaster™TR 16-Port Hub must be reset when the ZDL
switch position is changed.
Reset Switch
A reset switch is located on the front of the StackMaster™TR 16-Port Hub.
The reset switch reinitializes the StackMaster™TR 16-Port Unit. If the
SNMP Management Board is installed in the StackMaster™TR 16-Port
Unit and the StackMaster™TR 16-Port Unit is installed at the top of a
Stack, the reset switch reinitializes the entire Stack.
1-6
StackMaster™TR
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16
Lobe Ports
Active Retiming Managed Hub
Insert
Normal
Power
Ring Out
4 Mbps
P
A
16 Mbps
Reset
™
16 Port StackMaster TR
ZDL
OFF
ON
1234
5
6
78
Expansion Card
Indicators
Enable
Status
Ring In
P
A
networks
TRANSITION
P
A
P
A
OFF
ON
ZDL
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16
Lobe Ports
Active Retiming Managed Hub
Insert
Normal
Power
Ring Out
4 Mbps
P
A
16 Mbps
Reset
™
16 Port StackMaster TR
ZDL
OFF
ON
1234
5
6
78
Expansion Card
Indicators
Enable
Status
Ring In
P
A
networks
TRANSITION
Reset
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16
Lobe Ports
Active Retiming Managed Hub
Insert
Normal
Power
Ring Out
4 Mbps
P
A
16 Mbps
Reset
™
16 Port StackMaster TR
ZDL
OFF
ON
1234
5
6
78
Expansion Card
Indicators
Enable
Status
Ring In
P
A
networks
TRANSITION