INSTALLING THE TRMIM-20R
Page 3-2
3.2 INSTALLING THE TRMIM-20R INTO THE MMAC
The TRMIM-20R is designed to be easily installed into an MMAC
product When you install the TRMIM-20R, the following guidelines
must be followed:
•
The TRMIM-20R cannot be installed into Slot 0. Slot 0 is
reserved for an IRM (Intelligent Repeater Module).
•
To hardware daisy-chain several Token Ring MIMs in one
MMAC, be sure that a Flexible Network Bus backplane is
installed in the MMAC. If the Flexible Network Bus backplane is
not installed, each MIM will form its own independent ring
network.
•
If the TRMIM-20R is being installed into an MMAC-8FNB, be
sure that a Power Supply Module (PSM or PSM-R) is installed in
the associated rear power supply slot. The PSM or PSM-R is the
source of power for MMAC modules. One PSM or PSM-R is
required for every two MIMs.
NOTE: The PSM-R is a Redundant Power Supply Module, that is
recommended for use with the MMAC-8FNB.
Install the TRMIM-20R into the MMAC as follows:
1. Position the hardware jumper on the proper pins on the
TRMIM-20R to select either 4 or 16 Mbit/sec network ring speed
(see Figure 3-1). Use the specification criteria mentioned in
Chapter 2, Installation Requirements/Specifications, to
decide which speed to use.
NOTE: The network speed is also selectable by software. The
software selection overrides the hardware jumper selection.
2.
Power the MMAC chassis off, if it is not already powered off, by
unplugging the AC power cord from the wall outlet.
3.
Remove the selected blank panel from the MMAC and slide the
TRMIM-20R (see Figure 3-2) into the MMAC card cage. Be sure
that the card is in the top and bottom slots of the case.