Studio Technologies 74 - Manual (Page 16)

Model 74/75 User Guide Issue 2, January 2006
Studio Technologies, Inc. Page 17
for Surround
4. On the Model 74, connect the audio
level meter to the left channel of moni-
tor output A.
5. Confi rm that the audio source’s left
channel is generating a steady signal
at precisely its reference level.
6. Observing the level meter, adjust
Surround A, trim pot L, to give a pre-
cise +4 dBu level at the left channel
output of monitor output A.
7. Disconnect the level meter from the
left channel of the monitor output.
8. Repeat steps 4-7 for the right, center,
LFE, left surround, and right surround
channels of Surround A.
9. Repeat steps 3-8 for Surround B,
Stereo A, and Stereo B. Obviously, the
stereo inputs have only left and right
channels, requiring only that two trim
pots be adjusted for each.
10. After the calibration procedure has
been completed, rotate the level con-
trol on the Model 75 to the fully coun-
terclockwise (minimum) position.
11. After ensuring that the Model 75’s level
control is set to minimum, return AC
mains power to the power amps or
amplifi ed speakers.
Model 75 Operating Parameters
Many StudioComm functions can be con-
fi gured to meet the exact needs of your
installation. Here’s an overview of what
you can confi gure:
• Input channels active
• Speaker systems/monitor outputs
• Talkback
• Solo
• Power-up mute all
• Level control response
• Level control audio mute all
• Reference level
• Remote input select
• Dim level
• Remote mute all
• Remote dim
• Remote talkback
• Auto dim off
• Talkback dim
• Mono
The Model 75 confi guration diagrams,
located at the end of this section, give
details on how each parameter is set. An
overview of each confi gurable parameter
is provided in the following paragraphs.
Entering and Exiting the Confi guration
Mode
A small button is located on the back of
the Model 75 Control Console, adjacent
to the 9-pin D-sub connector. Pressing
and holding this button for two seconds
places the Model 75 into the confi guration
mode. In the confi guration mode the Model
75’s array of buttons and LEDs no longer
perform their normal functions, but instead
allow you to observe and change many of
the operating parameters. The mute/solo
mode LEDs light alternately to indicate that
the confi guration mode is active.
To leave the confi guration mode and
return the Model 75 to normal operation,
once again press and hold the confi gure
button for two seconds. Note that confi gu-
ration changes are stored only after the
confi guration mode has been exited.