Hydran* 201i Instruction Manual 
 
MA-033  Rev. 14.0,  12-Nov-18 
 
 
Figure 10-4: Host Computer Connection Modes in a Hydran 201 Ti RS-485 network 
A  Hayes-compatible  modem  can  be  pre-installed  and  pre-set  at  the  factory  in  an 
H201Ci.  For  details  on  settings,  refer  to  the  modem  procedure  located  in  the 
English/Procedures  folder  of  the  Hydran  201i  System  installation  CD.    A  typical 
communication configuration with a modem is shown in Figure 10-5. 
The modems supplied by General Electric should be connected 
to  an  analog line  only.   Using a  non-analog  line  (for example, 
digital, PBX, Multi-line) will damage the modem.