
1) Power LED. Lights when the repeater has power.
2) Module OK LED. Lights when the repeater passes
self-test. If the repeater fails self-test, the Module OK
LED is off.
3) Ring A/B LEDs. In a DEChub 900 MultiSwitch,
when either the A LED or the B LED is on, the
respective A or B ring is active. In a standalone
repeater, both Ring LEDs are always off.
4) Speed LEDs. Either the 16 LED or the 4 LED is on
to show the ring speed.
5) Ring In LED. Lights when a Ring In connection is
active.
6) Ring Out LED. Lights when a Ring Out connection
is active.
7) Speed Switch. Sets speed. Set to 16 when the
network speed is 16 Mb/s. Set to 4 when the
network speed is 4 Mb/s. Network management
cannot override Speed switch settings.
8) Ring In Port. Connects Ring In to the Ring Out port
of a repeater or Multistation Access Unit (MAU).
9) Autowrap Switches. Determine whether or not the
repeater automatically loops back when it detects a
disconnected link on Ring In or Ring Out. If the Ring
In or Ring Out port connects to a device with Digital’s
Autowrap, set the switch to 1 to enable Autowrap. If
the Ring In or Ring Out port connects to a device
without Digital’s Autowrap, set the switch to 0 to
disable Autowrap.
10) Ring Out Port. Connects Ring Out to the Ring In port
of a repeater or Multistation Access Unit (MAU).
11) Reset Switch. Resets all settings, except for the
Speed switch setting, to their factory defaults. To
reset: while turning on the power, press the reset
switch with a pen or screwdriver.
Front Panel
DECrepeater 900TL
3
2
1
LKG-8155-93I
3
4
5
6
7
8
9
10
11
9