10
2.1.2 Backside
Figure 2.2 Backside of HCS-4100MC/50 CMU
Figure 2.2
14. Ethernet interface (LAN)
For communication between the conference main
unit and the PC under TCP/IP protocol to realize
remote controlling; furthermore, it enables remote
controlling by wireless touch panel through central
control system.
15. Extension interface
To connect CMU to EMU and interconnect with
audio input interface and audio output device;
devices cascadable.
16. Contribution units ring connection LED
When output works properly (
≥
1 contribution unit
connected), LED will flash;
When no contribution unit is connected, LED is off.
17. Contribution units output interface (1-2, two
routes)
18. Video switch interface
When cooperating with video switch and dome
camera, video recording can be realized.
19. Fire alarm linked trigger interface
+5 V voltage application :
all conference units
will be switched off and display “ALARM”;
No voltage input or too low voltage:
conference
units will return to the status preceding “ALARM”.
20. Power supply
21. Mains switch
22. “LINE OUT 2”
(RCAx2 unbalanced output)
23. “LINE OUT 1”
(3 cord XLR balanced output)
24. “LINE IN 2”
(RCAx2 unbalanced input)
25. “LINE IN 1”
(3 cord XLR balanced input)
26. RS-232C port x 2
“COM” port is used for connecting to a central
control system for central controlling, as well as for
system diagnosis;
“TEST” port is used for updating and monitoring.