20
Location and Function of Parts and Controls
SXA-120 Expansion Board
1
MIC (microphone) CONTROL UNIT connector
(D-SUB 9-pin female)
Not used.
1
MIC CONTROL UNIT connector
2
EXPANSION UNIT connector
3
RS-232C connector
2
EXPANSION UNIT connector (20-pin multi-
connector)
Used to connect to the SX-E120A expansion unit by
means of the connecting cable supplied with the SX-
E120A expansion unit.
3
RS-232C connector (D-SUB 9-pin male)
Optional connector for expanding the functions. Used
to connect to the computer and so on.
SX-E120A Expansion Unit
Front panel
1
POWER indicator
Rear panel
4
POWER CONTROL CHECK-REMOTE switch
3
AC IN connector
5
CONTROL UNIT connector
6
DELEGATE’S/CHAIRMAN’S UNIT 5/6/7/8 connectors
7
U
terminal
1
POWER indicator
Lights when the power is supplied. The indicator lights
when the expansion unit is connected to the SX-M700A
control unit, the POWER swith
2
of the SX-E120A is
set to ON, and the POWER switch of the control unit is
set to ON.
2
POWER switch
Normally set this switch to ON (
`
).
When the power switch of the SX-M700A control unit
is set to ON, the SX-E120A turns on if this switch is
set to ON and the POWER indicator
1
lights.
If the system is not used for a long period, set this
switch to OFF (
a
).
2
POWER switch
