LRS-100 Spread Spectrum Generator

The LRS-100 generates PN sequences that are useful for developing and testing both spread spectrum and conventional data communication systems. These sequences are generated with a configurable 16-stage linear-feedback shift register (LFSR).

The register size, feedback taps, initial register contents (initial fill), and length of the linear recursive sequence (LRS) are all fully programmable. Supported codes include PN, Gold, Orthogonal-Gold, JPL, Barker, truncated, and appended codes. (The register size for Gold/JPL codes is limited to R8.) Different modes of operation include BPSK, QPSK, OQPSK (SQPSK), and Burst Mode for radar applications, with a maximum chip rate of 25 MHz.

A built-in clock and data simulator are included for the user's convenience, or external sources can be selected. External inputs include clock, preset, start/stop, and data to be spread. External outputs include a buffered clock, I and Q direct sequences, sequence-repeat (epoch) strobes, and a parallel interface for driving a frequency hopper. In addition, ports are provided for conveniently connecting a pair of LRS-100s together in a master/slave configuration for maintaining synchronization between the two. This feature is particularly useful for transmitter/receiver applications.

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LRS-205 Spread Spectrum Generator

The LRS-205 generates PN sequences that are useful for developing and testing both spread spectrum and conventional data communication systems. These sequences are generated with a configurable 32-stage linear-feedback shift register (LFSR).

The register size, feedback taps, initial register contents (initial fill), and length of the linear recursive sequences (LRS) can all be set manually via a soft menu on the display, or automatically via an optional GPIB interface. Supported codes include PN, truncated and appended PN, and Barker codes. Different modes of operation include BPSK, QPSK, OQPSK (SQPSK), and Burst Mode for radar applications, with a maximum chip rate of 25 MHz.Custom configurations are available upon request.

External inputs include clock, preset, start/stop, and data to be spread. External outputs include a buffered clock, I and Q direct sequences, a sequence-repeat (epoch) strobe, and a parallel interface for driving a frequency hopper. In addition, ports are provided for conveniently connecting a pair of LRS-205s together in a master/slave configuration for maintaining synchronization between the two. This feature is particularly useful for transmitter/receiver applications.

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LRS-220 Spread Spectrum Generator

The LRS-220 includes all the functionality of the LRS-205, but is equipped with two sequence generators, thus enabling it to generate Gold, JPL and syncopated codes.

The LRS-220 generates PN sequences that are useful for developing and testing both spread spectrum and conventional data communication systems. These sequences are generated with configurable 32-stage linear-feedback shift registers (LFSR).

The register size, feedback taps, initial register contents (initial fill), and length of the linear recursive sequences (LRS) can all be set manually via a soft menu on the display, or automatically via an optional GPIB interface. Supported codes include PN, Gold, Orthogonal-Gold, JPL, Barker, truncated, and appended codes. Different modes of operation include BPSK, QPSK, OQPSK (SQPSK), and Burst Mode for radar applications, with a maximum chip rate of 25 MHz.Custom configurations are available upon request.

External inputs include clock, preset, start/stop, and data to be spread. External outputs include a buffered clock, I and Q direct sequences, sequence-repeat (epoch) strobes, and a parallel interface for driving a frequency hopper. In addition, ports are provided for conveniently connecting a pair of LRS-220s together in a master/slave configuration for maintaining synchronization between the two. This feature is particularly useful for transmitter/receiver applications.

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The market for our generators is very small. Not being "mainstream" instruments, there is no consensus on what they should be called. Following is a list of possibilities, which we provide here so that engineers searching the Web will be able to find our products, regardless of what they choose to call them:

Direct Sequence Generator
DSSS Generator
FHSS Generator
Gold Code Generator
LRS Generator
PN Generator
PN Code Generator
PN Sequence Generator
PRBS Generator
Pseudo-Noise Generator
Pseudo-Noise Code Generator
Pseudo-Noise Sequence Generator
Pseudonoise Code Generator
Pseudonoise Generator
Pseudonoise Sequence Generator
Pseudo-Random Bit Generator
Pseudo-Random Bit Sequence Generator
Pseudo-Random Code Generator
Pseudo-Random Noise Generator
Pseudo-Random Sequence Generator
Pseudorandom Bit Generator
Pseudorandom Bit Sequence Generator
Pseudorandom Code Generator
Pseudorandom Noise Generator
Pseudorandom Sequence Generator
Spread Spectrum Generator
Direct Sequence Generators
DSSS Generators
FHSS Generators
Gold Code Generators
LRS Generators
PN Generators
PN Code Generators
PN Sequence Generators
PRBS Generators
Pseudo-Noise Generators
Pseudo-Noise Code Generators
Pseudo-Noise Sequence Generators
Pseudonoise Generators
Pseudonoise Code Generators
Pseudonoise Sequence Generators
Pseudo-Random Bit Generators
Pseudo-Random Bit Sequence Generators
Pseudo-Random Code Generators
Pseudo-Random Noise Generators
Pseudo-Random Sequence Generators
Pseudorandom Bit Generators
Pseudorandom Bit Sequence Generators
Pseudorandom Code Generators
Pseudorandom Noise Generators
Pseudorandom Sequence Generators
Spread Spectrum Generators
An Awesome Generator

Drop us a line if you think of a better name for our generators.

Nearly one out of twenty people misspell "spread spectrum" as one word (spreadspectrum) when performing searches on the Internet. Because of this, we maintain a duplicate of this page using that spelling. Click here if you wish to view that page. (This link is really provided so that search engines will find the page and keep it indexed in their databases.)

Relevant Search Terms

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