30.  Digital  Voltmeter  Indicator,  Yellow  (DS3):    This  LED  indicates  that  the  digital 
voltmeter on the front panel is On.  This means that the H201Ci-1 has a valid TDM 
(Time Division Multiplexing) signal from the H201Ti. 
 
31. Display  Board  Connector,  16  Pins  (J4):    This  connector  is  factory-wired  to  the 
display  board  located  on  the  door.    This  is  the  cable  used  for  communication 
between the controller board and the display board. 
 
 
4.2.4  Additional Information 
To obtain more information on the Hydran 201Ci-1, please consult the following parts of 
this manual: 
•  Before the installation:  See Chapter 6. 
•  Installation:  See Chapter 9. 
•  Communications and networking:  See Chapter 10. 
•  Alarms:  See Chapter 11. 
•  Operation:  See Chapter 12. 
•  Troubleshooting:  See Chapter 13. 
•  Maintenance:  See Chapter 14. 
•  Technical specifications:  See Appendix A.3. 
•  Mechanical drawing:  See Appendix B.3. 
•  Functional block diagram:  See Appendix C.3. 
•  Terminal blocks and connectors:  See Appendix D.3.