Installation manual

KB-112 Speaker Station
The KB-112 Speaker Station provides intercom communication capability in places where wearing a
headset is not feasible. It can be optioned for several remote control functions. Refer to the KB-112
Instruction and Service Manual for details on setting its option switches.
A Main or Remote Station can control the microphone on a KB-112 set to Remote Listen operating
mode, allowing the KB-112 operator to talk "hands free." When the option switches of the KB-112 are
set to this mode, depressing the Call button on the Main or Remote Station will turn on the microphone
of the KB-112. Care must be taken in the design of the intercom system to make sure that the call sig-
nal will not be needed for other functions on the same channel. For example, it would not be possible
to interface
both the TW-40 and a KB-112 in Remote Listen mode on the same intercom channel. In
this case, separate intercom channels should be used for each interface.
The KB-112 also has Remote Page and Remote Listen-Page modes. In these modes, the speaker of
the KB-112 can be turned on by a Call signal from the Main Station. The flexibility of Clear-Com Main
and Remote Stations allows the following variations on these modes:
A Main or Remote Station can be used to talk to other intercom stations, and enable the KB-112
speaker only when necessary. To talk to all intercom stations
except the KB-112, press the Main or
Remote Station Talk button. To talk to the KB-112 as well, press
both the Call and Talk buttons.
A Main or Remote Station can enable the KB-112 speaker whenever the operator is talking to other
intercom stations. Set the Call on Talk option switch or jumper for the channel the KB-112 is on.
This will cause the Call signal to be activated whenever the Talk button is held down. This will have
the effect of turning on the KB-112 speaker whenever the Talk button is pressed. If it is preferable
to prevent the Talk button from latching, set the Momentary Talk option switch or jumper for that
channel to the ON position. This will cause the Talk button to have a momentary only action and
not latch.
RM-220 Remote Station
A Main Station, such as the MS-232 can be configured to provide program audio on a channel but al-
low this audio to be interrupted whenever the Talk button for that channel is pressed. If a Remote Sta-
tion, such as the RM-220 is used along with the Main Station in this configuration, it can be important to
have the program audio interrupted by the operator of either station. To do this, the Main or Remote
Stations must be set up as follows:
Enable the Momentary Talk option switch or jumper on the appropriate channel of the Main and Re-
mote Stations. Refer to the User Manual for to locate this switch or jumper. This will cause the Talk
button to have a momentary only action and not latch.
Enable the Call on Talk option switch or jumper on the appropriate channel of the Main and Remote
Stations. Again, refer to the User Manual for these stations to locate this switch or jumper. This will
cause the Call signal to be activated whenever the Talk button is held down.
Feed the program audio into the Program Audio connector on the Remote Station .
With this setup, any Call signal on this intercom channel, including Call signals from beltpacks, will
cause the program audio to be interrupted.
Clear-Com System Installation Manual
9