18 | Installation and Mounting
5.2
LT-3120 Handset
The LT-3120 Handset is the primary voice interface for the Alphatron LT-3100 Iridium. The LT-3120
Handset must be connected on the front of the LT-3110 Control Unit. The connector is illustrated in
Figure 2 on page 16.
Figure 4: LT-3120 Handset (front view)
The LT-3120 Handset is connected to the LT-3110 Control Unit via a 5-pin proprietary angle
connector. The spiral cord, fixed to the LT-3120 Handset is ~0.4 m from handset to connector, when
coiled. The spiral cord can be stretched to a maximum of 2 m. The LT-3120 Handset is designed for
indoor mounting. Check the specifications in Appendix A: Specifications on page 45.
Figure 5: LT-3121 Handset (backside view)
The LT-3120 Handset has the following characteristics:
•
High-performance audio speaker and microphone
•
Separate ringer (buzzer)
•
Speaker volume control (double-
button, marked with ‘+’ and ‘
-
‘, for volume up and down)
•
Built-in off-hook detection circuit
NOTE
The LT-3110 Control Unit will inform the user if the LT-3120 handset is not properly
connected to the LT-3110 Control Unit. The following user information will be
showed in the display:
‘
Handset not connected
’
.
NOTE
The LT-3120 Handset must be operated together with the LT-3121 Cradle, for the
off-hook detection circuit to work. The LT-3121 Cradle is described in section LT-
3121 Cradle on page 19.
Summary of Contents for Alphatron LT-3100 Iridium
Page 1: ...Alphatron LT 3100 Iridium Installation Operation Manual www alphatronmarine com ...
Page 44: ...44 Appendices Appendices ...
Page 46: ...46 Appendices Appendix B Outline Drawing LT 3110 Control Unit ...
Page 47: ...47 Appendices Appendix C Outline Drawing LT 3130 Antenna Unit ...
Page 50: ...50 Appendices Appendix F Outline Drawing LT 3120 Handset ...
Page 51: ...51 Appendices Appendix G Outline Drawing LT 3121 Cradle ...
