Satellite Data Distribution and Translation:
Mini-modular Instruments (MMIs) from Pulse Research Lab are deployed in
satellite ground stations throughout the world for signal buffering,
distribution, translation, and scanning. Combinations of modules have
been assembled to implement higher-level functionality, such as a
multi-receiver switch matrix with redundancy and fail-over.
In this simple example* a single antenna output is passively split to
two demodulators, and the differential NECL outputs of each demodulator
are actively fanned out to an ingest path and a monitoring path. A
remotely-controlled 2 x 2:1 RF switch selects either the Primary
receiver or the Backup receiver, and another NECL fanout sends the
selected data stream to two ingest systems. The monitor path provides
active 50 Ω/VTT terminations and provides level-shifting for
compatibility with standard 50 Ω test equipment.
* In the actual implementation there are two of each module, one for
CLK and one for DATA.
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Our most common ground station application is fanout of a single demodulator
output to multiple digital receivers, such as ingest systems, logic
analyzers, oscilloscopes, etc. Fanout buffers are different from RF
splitters (even active splitters) because fanout buffers regenerate clean logic
signals.
Popular models include:
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- PRL-434A,
1:4 NECL Fanout Buffer, 4+ GHz
- PRL-434LP,
1:4 LVPECL Fanout Buffer, 4+ GHz
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PRL-424LV, 1:4
LVDS Fanout Buffer, 1.25 GHz
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PRL-414B,
1:4 TTL Fanout Buffer, 130 MHz
-
PRL-430N, 2
Ch. NECL Line Driver/Receiver
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PRL-431N, 1:2
NECL Fanout Buffer, 3+ GHz
- PRL-444, 4 Ch. TTL
Line Driver with High-Z Input
A complete list of models is available on
Fanout Buffers page.
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The alphabet soup of digital data standards can be daunting, especially
since they are nearly all mutually incompatible. Our second most common
ground station application is level translation of digital data streams
to/from NECL, CML, RS-422, and 124 Ω ECL, including optional Triax
connectors. Popular models include:
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A complete list of models is available on
Level Translators
page.
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We offer a variety of modules for switching and routing your RF and
digital signals from multiple antennae to a single demodulator, from a
single demodulator to multiple ingest systems, from multiple channels to
a single diagnostic point, etc. Selected modules have 50 Ω/VTT
terminations necessary for measuring/monitoring ECL/PECL/LVPECL signals
on standard test equipment. Popular models include:
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- PRL-852A-RM, 2 x 1:2
Switch/Router
- PRL-854-RM, 1:4
Switch/Router
-
PRL-854N, 1:4 NECL Switch/Router with 50 Ω/VTT
Termination/Translation
A complete list of models is available on
Switches/Routers
page.
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For single- or dual-channel (CLK/DATA) applications a single PRL module
may be sufficient. For multi-channel applications or higher-level
functions, such as a failover switch with monitoring, multiple units can
be integrated into a rack-mount chassis. We offer rack-mount kits for
you to do it yourself, or we can engineer a solution for you. Previously
designed systems include:
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Please contact
sales@pulseresearchlab.com for a quote on your custom application.
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Thank you for visiting PRL, and please browse the rest of the site for
solutions to a variety of pulse, data, and trigger applications. |
