I C S - 2 1 / 2 1 D T S P E A K E R S T A T I O N
1 - 6
INTERNAL ADJUSTMENTS AND CONNECTIONS
The controls and connectors inside the ICS-21/21DT are shown in Figure 2 on
page 1-6. They can be adjusted without completely removing the panel from its
wall box or DT-Box enclosure by removing the top two screws and loosening the
bottom two screws a few turns. The panel can then be tilted out from the wall to
make the controls accessible as shown in the lower view of Figure 2 on page 1-6.
Figure 2: Internal Controls
Call-Alert Tone-Level Control (1)
This control must be disabled by turning the control fully counterclockwise.
Minimum-Volume Control (2)
This control adjusts the minimum setting of the intercom-level control on the
front panel. This is normally adjusted when the system is set up and shouldn’t
need to be adjusted during normal operation. This feature can be disabled by
turning the control fully counterclockwise.
Option Switches (3)
Of the three option switches, only S1-1 should be configured when the system is
set up, and should not be changed in normal operation. The other two switches
(S1-2 and S1-3) should remain in the off position. The ON position of each
switch is toward the circuit board and the OFF position is toward the front
panel.
VIEW FROM TOP OF
ICS-21
FRONT PANEL
4
5
6
MINIMUM VOLUME CONTROL
CALL ALERT TONE LEVEL CONTROL
OPTION SWITCHES
MATRIX CONNECTOR
POWER CONNECTION
PROGRAM INPUT
1
2
3
321
• The station’s internal
controls provide the
ability to customize the
ICS-21/21DT to
numerous applications.
• An RJ-45 provides audio
and data communications
to the Matrix frame.
Summary of Contents for ICS-21
Page 1: ...SPEAKER STATION I N S T R U C T I O N M A N U A L ICS 21 21DT...
Page 4: ...I C S 2 1 2 1 D T S P E A K E R S T A T I O N...
Page 13: ...I C S 2 1 2 1 D T S P E A K E R S T A T I O N 1 9...
Page 15: ...I C S 2 1 2 1 D T S P E A K E R S T A T I O N...
Page 16: ...I C S 2 1 2 1 D T S P E A K E R S T A T I O N...
Page 18: ...I C S 2 1 2 1 D T S P E A K E R S T A T I O N...
Page 22: ...I C S 2 1 2 1 D T S P E A K E R S T A T I O N 4 4 Figure 6 Main PCB Component Layout...