Studio Technologies 5110 V.3.2 - Manual (Page 11)

Model 5110 User Guide Issue 7, October 2014
Studio Technologies, Inc. Page 11
Model 5110
Mic/Line Input Module
The Model 5190’s GUI allows text naming
of the module and two mic/line input chan-
nels. These names are stored in the Model
5190 and help a user better understand a
remotely-located module installation or de-
ployment. The on/off state of the phantom
power for each mic/line input channel can
be observed and changed if desired. The
state of the button lockout function can be
observed and modified.
Gain Range and Step Size
As previously discussed in this guide, us-
ing the pushbutton switches on the front
panel allows the sensitivity of each mic/
line input to be selected from among four
values: 0, +15, +30, and +45 dB. Selec-
tions on the GUI associated with the Model
5190 allow much greater control over the
input sensitivity. This allows the gain step
size to be changed from the default 15 dB
to be 3 dB. And, in addition to more pre-
cise control, when the step size is selected
for 3 dB the gain range expands to 9 to
60 dB in 3 dB steps; of course 0 dB is still
available.
Changing the step size to 3 dB will impact
how the front-panel buttons perform and
the way in which the LEDs will display.
When the Model 5110 is configured for a
3 dB step size the pushbuttons switches,
as expected, will change the input sensitiv-
ity by 3 dB with each press. The exception
is when moving down from 9 dB or up
from 0 dB as there is no setting for 3 or
6 dB. (19 steps allow settings of
0, 9, 12, 15, etc. up to 60 dB.) When the
sensitivity of an input is set for 0, 15, 30,
or 45 dB their associated status LEDs will
light as expected. But if the sensitivity is
set to a value between these four exact
values two LEDs will light. For example,
if the sensitivity is set for 9 dB then both
the 0 and the 15 LEDs will light. If the sensi-
tivity is set for 36 dB then both the 30 and
45 LEDs will light. If the sensitivity is set for
45 dB or greater (45 to 60 dB in 3 dB steps)
the 45 LED will be lit. While this may be a
little confusing at first it does provide the
most information that the simple front panel
LEDs can provide.
Technical Notes
Firmware Version Display
After the Model 5110’s power-up sequence
has completed, the module’s LEDs are used
to automatically display the firmware (em-
bedded software) version number. This is
useful when working with factory personnel
on application support and troubleshooting
situations. The seven level meter LEDs as-
sociated with channel 1 audio are used
to display the major version number with
a range of 1 through 7. The seven level
meter LEDs associated with channel 2
audio are used to display the minor version
number which ranges from 0 to 7. (No chan-
nel 2 LEDs lit indicates minor version num-
ber 0.) The firmware version number will
display for approximately one second after
the power-up sequence has completed but
before normal operation will begin. Refer to
Figure 5 for a detailed view of the LEDs and
the corresponding firmware version number-
ing scheme.
Note that while it’s easy to determine which
firmware version is loaded into the Model
5110 a trip back to the factory is required
to update it. The 8-bit microcontroller that
provides the unit’s logic “horsepower” also
includes internal FLASH memory. This
nonvolatile memory is used to store the
operating firmware (embedded software).