Installing and putting a SINAUT modem into operation
5.7 Analog dial-up modem MD3
Station control system
236
System Manual, 07/2009, C79000-G8976-C178-07
Basic settings for dialing mode
Certain basic settings must be made for the dialing mode. The settings relate to the data
format, the dialing procedure, 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- 29 Basic setting for dialing mode
Meaning
Setting on DIL switch
Data format 11 bits
(required, for example, for FT 1.2 format)
2))
21
6:
Data format 10 bits
(required, for example, for FT 2 format)
2))
21
6:
Tone dialing
2))
21
6:
Pulse dialing
2))
21
6:
Line adjustment 600 ohms
1)
2))
21
6:
Line adjustment Zr
1)
2))
21
6:
1) When shipped, the line adjustment is set to Zr, because the MD3 is normally connected to a digital telephone exchange. If an older analog
telephone exchange is used, change the line adjustment to 600 ohms if you encounter transmission problems.
Settings for a standard dialing profile
Apart from the default setting for the dial-up mode, switches SW2.2, SW2.3 and SW2.4 can
be used to select one of the 8 standard dialing profiles. Standard dialing profiles 0 to 6 are
default settings that enable the MD3 modem to be operated without any programming using
a terminal program if one of these profiles matches the intended application. Standard
dialing profile 7 can be freely configured by the user and therefore requires programming by
