Installing and putting a SINAUT modem into operation
5.7 Analog dial-up modem MD3
Station control system
238 System Manual, 07/2009, C79000-G8976-C178-07
Basic settings for dedicated line mode
Certain basic settings must be made for the dedicated line mode. The settings relate to the
data format, the modem type, and line adjustment. You make the basic settings with the DIL
switches SW2.1, SW2.5, SW2.6 and SW2.9.
The procedure is as follows:
Turn of the power supply and set the four switches mentioned above to the required position.
When you turn on the power supply, the modem then adopts the selected basic setting.
Table 5- 31 Basic setting for dedicated line mode
Meaning Setting on DIL switch
Data format 11 bits (8E1)
2))
21
Data format 10 bits (8N1)
2))
21
Modem A (originate)
2)
2))
21
Modem B (answer)
2)
2))
21
Line adjustment 600 ohms
1)
2))
21
Line adjustment Zr
1)
2))
21
1) The factory setting for the line adjustment is Zr because this normally adapts MD3 optimally to the dedicated line and the frequencies used.
Line adjustment with 600 ohms is not normally necessary. It is, however, important that the two modems connected to each other over the
dedicated line are set to the same line adjustment.
2) Refer to the explanations in the section Modem A and modem B for dedicated line mode.
Note
A further important basic setting for dedicated line mode is deactivating the loop power
section.
To Next Page
Loading...
