RFL IMUX 2000 - 2.6 MULTIPLEXER, SETUP JUMPERS AND DIP SWITCHES

Because RFL™ and Hubbell® have a policy of continuous product improvement, we reserve the right to change designs and specifications without notice.
2.6 MULTIPLEXER, SETUP JUMPERS AND DIP SWITCHES
Setup jumpers are located on most Module Adapters, OIA Optical Interface Adapters and on the CM4
Common Module. Table 2-18 briefly describes the use of the setup jumpers. A complete discussion of
the location and function of each setup jumper appears in Section 5 of this manual.
Table 2-18. Setup jumpers and DIP switches
Module Labels Description
MA-271 J1 and J2
J3
Used to select CM4 mode (TERM, D/I A or D/I B).
Used to ground or unground outer conductor of Receive Port “RX IN”.
MA-278 J1 and J2
J5
Used to select CM4 mode (TERM, D/I A or D/I B).
Used to select current loop if required.
MA-270R J1 and J2
J4
J8
J9
Used to select CM4 mode (TERM, D/I A or D/I B).
Used to select current loop if required.
Used to select “symmetrical pair mode” or “coaxial pair mode”.
Used to ground or unground outer conductor of Receive Port “RX IN”.
MA-275R J3 and J4 (upper board)
J1 and J2 (middle board)
J4 (middle board)
J8 (middle board)
J9 (middle board)
Used to select SCB mode.
Used to select CM4 mode (TERM, D/I A or D/I B).
Used to select current loop if required.
Used to select “symmetrical pair mode” or “coaxial pair mode”.
Used to ground or unground outer conductor of Receive Port “RX IN”.
CM4 J8
J3 and J4
Used to select RUN or TEST modes. For normal system operation, jumper should be
in RUN position. TEST position is for factory use only.
Used to select E1 or RS422 external timing input
formats as follows:
Fill all four J3 positions to select external timing input in E1 fo
rmat as shown
below.
Fill all four J4 positions to select external timing input in RS422 format as shown
below.
IMUX 2000E1 RFL Electronics Inc.
Note: The external timing output is always in 422 format.
All other jumpers are for factory use only.
J3 J4
E1
422
OIAs DIP switch SW1 Used to set fiber optic interface configuration as follows:
SW1-1
SW1-2 Mode selection:
DOWN (on) DOWN (on) TERM
UP (off) DOWN (on) DI-A
DOWN (on) UP (off) DI-B
UP (off) UP (off) SPARE
April 1, 2007 2-46 (973) 334-3100