Manual
Issue 1, September 2015 Model 43D User Guide
Page 12 Studio Technologies, Inc.
perform optimally when driving loads of
2000 (2 k) ohms or greater. The nominal
level of the IFB line outputs is –10 dBu.
As expected, a signal supplied by the
Dante source that has a nominal level of
–20 dBFS will result in a level of –10 dBu
being present on its associated IFB line
output. While this –10 dBu nominal level
is lower than the 0 or +4 dBu that is typi-
cally provided by broadcast equipment, it
should prove to be extremely compatible
with inputs on a wide range of equipment
that has various input level sensitivities.
Any required “make up” gain can typically
be easily accomplished in the connected
equipment. And equipment that has lower
“pro-sumer” nominal audio levels can be
interfaced without issue.
The Model 43D provides two 3-pin male
XLR connectors for interfacing the IFB line
outputs with associated equipment. A user
will provide two 3-pin female cable-mount-
ed connectors to interface with the IFB line
outputs: pin 2 should be connected as
signal + (high) and pin 3 as signal – (low).
The cable’s shield can be connected to
pin 1, but it will have no function. To limit
the chance of grounding interaction be-
tween the Model 43D and connected
equipment, pin 1 on the line-level IFB out-
put connectors is isolated from any point
in the Model 43D. The fact that pin 1
“floats” will minimize the chance of hums,
noises, or buzzes being present on the
connected equipment.
Configuration
Back-Panel DIP Switches
A 4-position DIP switch assembly, labeled
Config, is located on the Model 43D’s back
panel. As of the time of writing this guide
none of the switches are utilized and they
have no impact on Model 43D operation.
Dante Configuration
To integrate the Model 43D into an appli-
cation several Dante-related parameters
can be configured. At a minimum, signals
must be routed to the four Dante receiver
(input) channels. The configuration settings
will be stored in nonvolatile memory within
the Model 43D’s circuitry. As such, power-
down and power-up activities will not
impact the unit’s settings. The Model 43D
uses the Ultimo 4-input/4-output integrated
circuit to implement the Dante architecture.
However, only the four receiver (input)
channels are utilized. This dictates which
parameters can be configured and what
choices are available.
The four receiver (input) channels associ-
ated with the Model 43D’s Dante interface
must be assigned to the desired sources
(Dante transmitter channels). This will typi-
cally be done with the Dante Controller
software application which is available for
download free of charge at www.audinate.
com. Versions are available to support
Windows® and OS X® operating systems.
Within Dante Controller a “subscription” is
the term used for routing a transmitter flow
(a group of output channels) to a receiver
flow (a group of input channels). Note that
as of the writing of this guide the Ultimo in-
tegrated circuit limits the number of Dante
flows to two. These can either be unicast,
multicast, or a combination of the two.
The Model 43D has a default Dante device
name of ST-M43D followed by a unique
suffix. The suffix identifies the specific Mod-
el 43D that is being configured. The suffix’s
actual alpha and numeric characters relate