Manual

Model 391 User Guide Issue 2, December 2018
Studio Technologies, Inc. Page 13
the configuration of the Status configura-
tion, it can be enabled whenever a call
signal is present or could be active all the
time.) When selected to Slow Flash the
visual indicator will alternate between on
and off two times per second. In Fast Flash
the visual indicator will alternate between
on and off a little more than four times
per second. In the Pulse configuration the
visual indicator will light twice followed
by a short pause, repeating a little more
once per second. The Pulse setting can
be effective in gaining a viewer’s attention.
The default configuration is Continuous for
Mode 1 and Fast Flash for Mode 2.
Color
Choices are: 20 standard colors and
Windows Color Selector
The Color configuration allows the color
of the visual indicator’s red/green/blue
(RGB) LEDs to be selected. There are ap-
proximately 20 standard colors to choose
from. Should none of these meet the
application’s needs using the color palette
can provide many more choices. Note
that selecting black will result in the visual
indicator producing a dark gray color. This
seemed to be more reasonable than trying
to generate black which is the absence of
light! The default color for Mode 1 is green
while the default for Mode 2 is purple.
These two colors were selected just to
highlight the possibilities that the flexible
configuration choices allow.
A unique color configuration situation aris-
es if the Call Source has been selected to
be Channel 1 & 2. In this case a call signal
(18-23 kHz tone) present on either audio
input channel will activate the configured
call functions. But to keep the underlying
firmware and user interface reasonably
simple only one color configuration choice
is provided. If a call signal is detected on
channel 1 the visual alert will light in the
color that has been configured. If a call sig-
nal is detected on channel 2 the visual alert
will light in a color that’s mathematically
complementary to the configured color.
This ensures that two unique colors will al-
ways display in response to call signals on
the two input channels. Experimenting with
various color selections will allow the “color
pairs” to be observed and a desired choice
to be made.
Audio Alert
Three configuration choices allow the char-
acter of the audio sounder to be selected.
Status
Choices are: Off, Low Range, and High
Range
The Status choices allow selection of the
overall operation and output level of the
audio sounder. The Off choice should be
selected if the audio sounder should never
activate. A rotary control on the front panel
of the Model 391 allows the user to select
the desired output level. Two configuration
choices allow the level adjustment range
of the audio sounder to be selected. This
helps the user select a final level that best
meets the needs of an application while
not exceeding what is considered reason-
able. In most applications it’s expected that
the Low Range will be appropriate. When
the audio sounder has to “cut through”
other audio content the High Range can be
useful. But at its maximum level the audio
sounder can be quite annoying and should
be selected with care! The default configu-
ration for Mode 1 is Low Range while the
default for Mode 2 is Off.