Installing and putting a SINAUT modem into operation
6.5 LTOP line transformer with overvoltage protection
SINAUT ST7 Station control system - System Manual
264
System Manual, 05/2007, C79000-G8976-C178-06
View from above
Schematic
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6.5.2
Connecting up the MD2 modem
The following figures show how the dedicated line modem MD2 is connected up. The LTOP1
or LTOP 2 is connected up over the standard cable that ships with the modem. This cable
has RJ-12 Western plugs at both ends.
Note
Instead of the MD2 modem, the MD2 modem is integrated in a TIM, for example, TIM 32 or
TIM 42 can be used. In this case, the LTOP is also connected up over the standard RJ-12
cable that ships with the TIM.
Please make sure that the MD2 modem has the correct line termination setting:
● For end point 1200 or 2400 bps: 600 ohms
● For end point 19,200 bps: 150 ohms
● For a tapping point: High resistance
Note
Please make sure that the S1 and S2 switches are set correctly in position 1 or 2 as shown
in the following figures!