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ICM-16/MHI Installation and Operation Manual
DESCRIPTION
DESCRIPTION
The ICM-16/MHI, Monitor Headphone Intercom station offers the ultimate in inter-
communication among sixteen studios. No other system on the market at this price
offers the functionality and features of the ICM-16/MHI. Each single rack space unit is
a complete intercom/monitoring station that can communicate with up to 15 other units.
Each unit may be inserted into both the monitor and headphone paths of most consoles
and work in conjunction with your existing monitor and headphone amplifiers. The
ICM-16/MHI also features a headphone amp with a front panel 1/4” T/ R/S jack, level
control, selectable microphone and/or line amplifier with front and rear panel XLR con-
nectors. Each intercom station key may call any of the other 15 stations, along with 3
work groups and all-call. Additional features include the ability to insert talkback audio
into either or both of the headphone and/or monitor channels, and the ability to dim the
audio along with muting of either monitor channel, Do Not Disturb option or numerous
other features. The "B" version is equipped with a 2 input headphone switcher allow-
ing the user to select between two different headphone sources. This could be useful
when feeding headphones with air audio when using digital audio processors.
Advanced options are programmed using a non-dedicated PC. Connection between the
ICM-16/MHI and the ICM-16/controller is accomplished with standard Cat 5 cable.
FUNCTION TERMINOLOGY
Talkback Buttons:
Twenty front panel switches activate the talkback path for each destination studio.
For example, when a talkback button for the desired destination studio is pressed,
the following events occur:
• The origination and destination studio monitor speakers will dim if configured
to a user-defined level, which may be adjusted using the rear panel left and right
“Mon Dim” controls. Their operation may be further modified via menu and
the DIP switch (SW25) for each channel. ALL monitoring functions are
summed into monaural during talkback and the monitor speakers will mute if
the mute function is active.
• The origination and destination headphones will dim if configured to a user-
defined level, which may be adjusted using the rear panel left and right “Hdph
Dim” controls. Their operation may be further modified via menu and DIP
switch (SW25) for each channel. ALL monitoring functions are summed into
monaural during talkback.
• A talk path from the originating studio to the destination studio is established.
The originating studio may use the external Microphone/Line input as a talk-
back source. Talkback is active as long as the talkback button is being pressed
and the destination studio is NOT using the DND function.
• The destination studio’s front panel “CALL” LED will light for as long as the
originating station is feeding audio. A SPDT “CALL” relay contact closure that
may be connected to an optional external alerting device is also provided .
