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11
ICM-16/MHI Installation and Operation Manual
INSTALLATION
CALIBRATION
1. Talkback “Microphone/Line In” Input
The first step is to adjust the TB Send level leaving each MHI to your facility’s
particular reference level. A good rule of thumb would be from -10 to +4 dbu.
By speaking into the talkback source, such as a microphone, press the station 1
button and adjust the TB Send rear panel trimmer pot to read your reference
level on pins 4 & 5 on J9 (T/B SND). You should have your voice peaks reach
your reference level. This needs to be set on all of the Broadcast Tools® ICM-
16/MHI units so levels match each other.
2. Receive Talkback Level
Choose one particular intercom to work on for the rest of these calibrations.
Turn the monitor pot on the MHI all the way down. Now set your power ampli-
fiers level to its normal position. Have someone go to another MHI that has its
talkback TB SEND output calibrated and have him or her talk into the micro-
phone while depressing your station’s talkback button. At the Broadcast Tools®
ICM-16 Controller, adjust the CHx OUT control to a comfortable listening level
in your monitor speakers and headphones. Particular care should be used when
calibrating, as the talkback level will remain constant.
3. Hdph level
There are two ways of setting up the headphone level through the MHI. One is
to actually use the Hdph level pot on the front of the MHI and feed it with line
level from your headphone selector on the console, bypassing the console’s
headphone pot. In this case, the talent uses the Hdph level pot on the MHI to
control the headphone level. The other way is to feed the MHI with the output
from your headphone pot on the console. To calibrate, turn up the console’s
headphone pot to maximum and adjust the MHI’s Hdph level control to your
loudest listening level in your headphones. The console’s headphone pot is now
in control of the level.
4. Monitor Dim:
The left and right monitor dim level is adjustable on the rear panel.
5. Hdph Dim:
The left and right headphone dim level is adjustable on the rear panel. Repeat
steps 2 through 7 for each studio intercom. Some fine-tuning may be neces-
sary once they’re installed.
MENU Setup
The setup menu is used to configure advanced features of the MHI. Follow the pro-
cedure below to configure HyperTerminal. When you have finished configuring
HyperTerminal, move to Page 13 to resume MHI Set Up.
NOTE:
Ear protection proce-
dures should be
observed.
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