Cabletron Systems STHI - Manual (Page 27)

Installing the STHI
Page 3-2
3.1.2 Stacking the STHI
The rear panel of the STHI has four STACK ports exclusively reserved for
connections to STH modules. Refer to the STH manual for stacking
instructions.
3.1.3 Attaching the Strain Relief Bracket
To reduce lateral stresses imposed on TCU ports and cable plugs by the
weight of cables hanging from the TCU ports of a horizontally mounted
STHI, the strain relief bracket ensures that cable forces pull nearly straight
out from the port, rather than prying sharply downward.
Attach the strain relief bracket to the front of the STHI as follows:
1. Locate the strain relief bracket and four 8-32 x 3/8” screws.
Use of longer screws may cause damage to the unit or
electrical shock to the user.
2. Carefully turn the STHI upside down.
3. Attach the strain relief bracket to the bottom of the STHI as shown in
Figure 3-1.
Figure 3-1. Attaching the Strain Relief Bracket
3.1.4 Rack-Mounting the STHI
Perform these steps to install the STHI in a 19-inch rack:
1. Remove the four cover screws (two from each side) located near the
front-most edges of each side of the STHI.
2. Using the four screws removed in step 1, attach the rack-mounting
brackets to each side of the STHI as shown in Figure 3-2.
WARNING
LANVIEW ® SUPPORTING 100 OHM UTP CABLE HubSTACK
STHI-24
TOKEN RING HUB WITH
24X 23X 22X 21X 20X 19X 18X 17X 16X 15X 14X 13X
12X 1 1X 10X 9X 8X 7X 6X 5X 4X 3X 2X 1X RI
RESET
CPU ACT MGMT 16 Mb/s SPEED 16M 4M
COM RO