DATA ACQUISITION
device is configured using two hardware
“slices”: a DSP Engine and an Ethernet/
Power/Processing Engine. The slices are
interconnected together with internally
stored firmware personalities which are
recalled based on user needs. New
firmware personalities and/or software
revisions are easily updated in the field.
There is no need to return the unit for
most modifications.
When configured as a traditional Range
Telemetry Baseband Telemetry Processor,
the LS-68-M is capable of handling up to
three streams of data. Functions can be
allocated, such as two decommutation
streams and one simulation stream.
Various options include the addition of 32
GB (per channel) data recording at the bit
level or of decommutated frame data with
UDP data broadcasting of the received
baseband telemetry.
The unit has a very flexible and useful
internal Data/IF Modulator and Bit Error
Reader/Frame Synchronizer Lock
indicator for use in system LoopBack
74 SHOWCASE 2020 \\ AEROSPACETESTINGINTERNATIONAL.COM
These packets can be brought in via
“Auxiliary Input” to the Lumistar Data
Processing Software (LDPS) suite of tools
for real time display, archive, playback and
simulation of flight test data. The
LS-68-M is compatible with several other
commercially available software packages,
such as IADS® which is widely regarded as
the industry standard for flight test
display and analysis.
The LS-68-M is capable of handling
many modern coding and digital link
enhancement schemes, such as Viterbi, and
Reed-Solomon. Each of these has its own
special niche, applications and merits (as
well as demerits) in modern telemetry
flight test and space telemetry applications.
BASEBAND DATA ACQUISITION
APPLICATIONS
The LS-68-M can be configured to act as a
Baseband Data Acquisition Unit. Analog
signals can be sampled, digitized, converted
to various formats and then broadcast
via Ethernet.
Owing to the open-ended architecture
of the LS-28-DRSM series product, many
more personality applications are
conceivable. Please don’t hesitate to contact
Lumistar for additional information on
these or any other potential applications
for the use of the device. \\
Bryan Graber is president and CEO and Mark
McWhorter is vice president of sales and marketing
of Lumistar
LS-68-M ADVANCED BASEBAND TELEMETRY PROCESSING SYSTEM
The Lumistar LS-68-M
Modular Multi-Channel
Telemetry Processing,
Recording, Playback and
Simulation System offers
a small, low-cost, highperformance,
multi-channel
COTS solution for PCM
data synchronization,
decommutation and simulation
applications. The LS-68-M
enhances the feature sets of
Lumistar’s legacy product
lines and provides them in an
“OS-less” environment.
The LS-68-M supports
up to three IRIG 106 Class I
and II compliant PCM frame
synchronizer/decommutators
and up to two “real-time” PCM
Simulators with IRIG/1PPS/
PTP time synchronization and
data recording. Data can be
supplied to the processing
platform as single-ended
or high-speed differential
clock and data inputs. The
data can be streamed via
IPv4 UDP data packets over a
Gigabit Ethernet interface. If
the user requires analog PCM
inputs, the LS-68-M offers two
PCM bit synchronizer channels
with software selectable
input impedance.
Included as a standard
feature is an IRIG and 1PPS
generator for occasions
where one or more LS-68-Ms
are being used in locations
where a time source may
not be available. An optional
battery backed Real-time
clock and calendar for those
who want to have relative
time adherence even in
environments where no such
time source exists.
The LS-68-M can be
equipped with optional
on-board data storage for each
of the defined data channels.
In the case that the channel
has been defined as a Frame
Synchronizer/Decommutator
this on-board storage will
record real-time data for post
event downloads. In the case
that the channel has been
defined as a PCM simulator,
this storage can be uploaded
with a playback file and the
onboard firmware will play the
resulting file as a simulated
PCM stream.
The LS-68-M is 4.00in x
6.00in x 1.13om, consumes
under 20W of DC power at +9
to +42 VDC and weighs only 1.1
pounds.
For more information see
Lumistar’s website.
3 // The processing
engine of the LS-68-M can
be included in a networkcentric
design
3
Tests. The unit is constantly measuring
voltage and temperature, as well as other
health paramters, and alerts to out of
boundary conditions.
The LS-68-M provides the capability to
decommutate the data from either analog
or digital sources. The framed data is then
broadcast via UDP multicast packets.
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