Setting The Thn-Mim Jumper (Jp1); Installing The Irm3 Into An Mmac Chassis - Cabletron Systems IRM-3 User Manual

Chapter 3: Installing the IRM3
Set the CTS External/Internal Jumper as follows:
• If RTS or DTR is generated by your device to the IRM3, place the
jumper over pins 2 and 3. This is the position in which the IRM3 is
shipped.
• If RTS or DTR must be generated internally by the IRM3, place the
jumper over pins 1 and 2.

3.2.3 Setting the THN-MIM Jumper (JP1)

The THN-MIM Jumper (JP1, Figure 3-1) may need to be set depending
on the revision level of the THN-MIMs installed in your MMAC. To
check the revision level of the THN-MIM, refer to the part number
located in the lower left corner of the module (same side as the backplane
connector). Set the THN-MIM Jumper as follows:
• If you are using THN-MIM part numbers 9000043-06 and above in
your MMAC, place the jumper over pin 2 and pin 3. This is the
position in which the IRM3 is shipped.
• If you are using THN-MIM part numbers 9000043-05 and below in
your MMAC, place the jumper over pin 1 and pin 2.
If THN-MIM part numbers 9000043-05 and below and
!
9000043-06 and above are both installed in your MMAC, the
THN-MIM Jumper must be placed over pin 1 and pin 2.
CAUT ION

3.3 INSTALLING THE IRM3 INTO AN MMAC CHASSIS

The IRM3 is designed to be installed into slot 1 of any MMAC. No
special skills or tools are required to install the IRM3. To install the IRM3
into an MMAC, continue as follows:
1. Power off the MMAC.
2. Slide the IRM3 (Figure 3-2) into Slot 1 of the MMAC card cage. Be
sure that the card is in the top and bottom slot guides.
Page 3-4 IRM3 User's Guide