Westermo MM-14 - Handbuch (Seite 13)

13 6186-2003
Hints
The MM-14 has the same line interface as many of Westermo’s systems and are hence
compatible.
The RS-232/V.24 interface on the MM-14 can be configured as DCE (Data Communi-
cation Equipment) or as DTE (Data Terminal Equipment) via connectors inside the
MM-14. Those connectors makes it possible to use the same cable in both DCE and
DTE applications.
If any problems do occur on set up of the MM-14, some hints will be helpful.
A good way to check the MM-14 is to carry out a loop back test. Connect T+ to R+
and T– to R–. Connect the RS-232/V.24 port to a terminal. When keys are pressed on
the terminal you should receive the echo on screen. If this test is ok then connect the
remote modem an make a loop between RD (Received Data) and TD (Transmitted Data),
the characters transmitted from the terminal shall be echoed in the same way as before.