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PN Sequence Generators:

Feature Comparison

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Feature LRS-100 LRS-205 LRS-220
Shift Register
Maximum Size
Programmable Feedback
Programmable Initial Fill
Programmable Length
-
16-Stages or Dual 8-Stages
Yes
Yes
Yes
-
32-Stages
Yes
Yes
Yes
-
Dual 32-Stages
Yes
Yes
Yes
Modulation Codes
BPSK
QPSK
OQPSK (SQPSK)
Gold/JPL
Dual QPSK (aka Gold QPSK)
Dual OQPSK (aka Gold OQPSK)
Syncopated
Frequency Hopping
-
Yes
Yes
No
Yes (8-stages max.)
Yes (8-stages max.)
Yes (8-stages max.)
Yes (8-stages max.)
Yes
-
Yes
Yes
Yes
No
No
No
No
Yes
-
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Clock
Maximum Rate
Internal Source
External Input
-
25 MHz
Yes, 1-2-5 Sequence
Yes
-
25 MHz
No (future upgrade)
Yes
-
25 MHz
No (future upgrade)
Yes
Data
Maximum Rate
Internal Simulator
External Input
-
25 MHz
Yes
Yes
-
25 MHz
No (future upgrade)
Yes
-
25 MHz
No (future upgrade)
Yes
Special Modes
Burst (for radar applications)
Master/Slave
  (for synchronizing two
generators)
-
Yes
Yes
-
Yes
Yes
-
Yes
Yes
Inputs
Level (logic family)
External Clock
External Data
High-Speed Controls
  (for starting, stopping, and
presetting the shift register)
-
TTL
Yes
Yes
Yes
-
TTL
Yes
Yes
Yes
-
TTL
Yes
Yes
Yes
Outputs
Level (logic family)
Direct Sequence
Parallel (for frequency hopping)
Clock
Strobe (epoch)
Data Simulator Outputs:
  Data
Clock
Strobe (epoch)
-
TTL
Yes
Yes
Yes
Yes
-
Yes
Yes
Yes
-
TTL
Yes
Yes
Yes (buffered Clk In)
Yes
-
N/A
-
TTL
Yes
Yes
Yes (buffered Clk In)
Yes
-
N/A
Options
GPIB (IEEE 488.2, SCPI)
Custom Configurations
Upgradable
-
No
No
No
-
$2,000 ($2,200 Int'l)
Yes
Yes
-
$2,000 ($2,200 Int'l)
Yes
Yes
Enclosure
Bench-Top
Rack-Mount
Rack-Mount
Price (US $)
Domestic (USA & Canada)
International
-
$11,000
$12,100
-
$16,000
$17,600
-
$22,000
$24,200
 
















Related Search Terms

For the benefit of those searching the Web, following are search terms related to this page:

Direct Sequence Spread Spectrum (DSSS or DS)
Pseudonoise Codes
Pseudonoise Generator
Pseudonoise Sequence
Pseudonoise Sequences
Spread Spectrum







   
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