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Figure 31. EC-DMM Front Panel
4.3.1 Installing the EC-DMM
Remove the card from its shipping container and check it for damage.
There are 2 jumper blocks that may need to be changed, JP8 and JP9. These
jumpers are shown in Figure 32 on page 60. These jumpers allow you to set the
auxiliary DB-9 connector to RS-232 or RS-423. For the factory default, which is
RS-232, the jumper will be between pins 2 and 3 (the bottom 2 pins) of JP8. To
select RS-423 mode, the jumper on JP8 should be changed to pins 1 and 2 (the
upper pins). For RS-423, the jumper must be installed on JP9. For RS-232,
remove the jumper from JP9.
Chapter 4. 8260 Distributed Management Architecture 59