Studio Technologies IFB Plus 2005 - Manual (Page 16)

Issue 8, December 2005 Model 2 User Guide
Page 16 Studio Technologies, Inc.
correctly, as an incorrect setting could seri-
ously damage the unit. Should it be neces-
sary to change the unit’s operating voltage
refer to the Technical Notes section of this
guide. Because the Model 2 contains no
power switch it will start operating as soon
as mains power is connected.
The Model 2 uses an IEC standard connec-
tor to mate with the AC mains cord. Normal-
ly the cord supplied has a North American
standard plug at one end and an IEC con-
nector at the other. In non-North American
applications the appropriate plug must be
attached. The wire colors in the mains cord,
in most cases, will conform to the interna-
tionally recognized CEE color code and
should be wired accordingly:
Connection Wire Color
Neutral (N) Light Blue
Live (L) Brown
Earth/Ground (E) Green/Yellow
Operation
The Model 2’s Front-Panel
Controls and Indicators
If you value equipment by the number of
switches and lights per rack space, the
Model 2 is really a good deal—there is more
stuff crammed onto the front panel than we
thought possible! Seriously, the designers
had the difficult problem of getting maxi-
mum functionality into a single rack space.
We had heated arguments about the feature
list, what to include, what to delete. In the
end, we feel that all important features were
included. Once you understand all the func-
tions, we think you’ll find the Model 2 quite
powerful, yet easy and intuitive to use.
Looking at the Model 2’s front panel from
the left to the right, you should note the
functional groups: internal interrupt micro-
phone, channel 1-related items, channel
2-related items, voice activated (VOX) inter-
rupt, telephone interface 1, telephone inter-
face 2, monitor amplifier, and power LED.
We’ll discuss these groups in the following
sections.
Internal Interrupt Microphone
The Model 2 contains an internal micro-
phone which can be used to access either,
or both, of the IFB channels. Two momen-
tary action pushbutton switches are located
on the left end of the front panel and are
labeled IFB 1 and 2. Pressing either switch
mutes (or optionally dims) program audio,
mutes the monitor speaker output, and con-
nects the microphone to the selected IFB
channel(s). The IFB status LED associated
with each chan-nel will light whenever its
corresponding interrupt button is pressed.
Notice that sound enters the microphone via
the small openings in the front panel above
and slightly to the right of the switches.
Program Select, Level Adjustment, and
Indicators
Two identical sets of controls and indicators
serve IFB channels 1 and 2. Each channel
contains six program select switches, two
status LEDs, a program level control, and a
5-segment LED level meter. The six switches
are used to select which of the four program
inputs, and the receive audio from the two
telephone interfaces, will serve as the pro-
gram audio source(s). The switches were
chosen to allow more than one source to be
selected at a time. The ability to simultane-
ously depress and lock multiple buttons is
not a defect, but is a feature which can be
useful in special circumstances.