ICS-22 Speaker Station | User Guide
Page 16
Pin number
Function
1
Ground (shield)
2
Positive signal
3
Negative signal
Table 2-3 ICS-22 XLR pinout
Note:
Both 10-VAC and 16-VAC doorbell transformers are commonly available at
hardware stores, but only the 16-VAC transformers are suitable in this case. The
panel can obtain power from three different sources.
Figure 2-3 ICS-22 Program-Input Cable Wiring
2.5.5
Power Connection (5)
The panel requires local power, which can come from various sources, including:
16-VAC Doorbell Transformer
A doorbell transformer can be attached to a separate box containing the power-
line connection and the low-voltage, 16-VAC can be routed to the connector on
the EB7-4W circuit board. This connection is especially useful if the headset or
speaker panel is installed in a wall.
14-VAC Wall-Mounted Power Supply
A Clear-Com wall-mounted power supply (part number 400008) can be used for
powering the panel from 120 VAC. (Use part number 400011 for 220 VAC power.)
This connection is a better choice if the headset or speaker is mounted in a
desktop box, such as a Clear-Com DT-Box, which is not located on a wall.
24- to 28-VDC Source
The headset or speaker panel can be powered from a DC source, such as
batteries.
To connect the selected power supply:
2
3
1
Pin 1
ICS-22 program
input connector
XLR connector