ComBlock COM-1826 Manuel

Parcourez en ligne ou téléchargez le pdf Manuel pour {nom_de_la_catégorie} ComBlock COM-1826. ComBlock COM-1826 19 pages. Tdrss spread-spectrum modem

Imprimer la page

Key Features



TDRSS spread-spectrum modem comprising

o Demodulator with two input types:

GbE LAN/SDDS-formatted input

stream or RF input.

o Modulator with baseband or RF output.



BPSK and SQPN spread-spectrum modulation



Convolutional/Viterbi error correction: K=7

Rate ½



Programmable 1023- (forward command link)

or 2047-chip (return mode 2 link) periodic I and

Q Gold codes



Programmable bit rates from 1 to 150 Kbits/s

on each channel. Two independent bit

synchronizers to acquire and track each channel

bit stream.



120-bin parallel code search for fast code

acquisition. False code lock prevention.



Built-in Bit Error Rate measurement for PRBS-

11 test sequences.



Demodulation performances: within 1.5 dB

from theory at threshold Eb/No of 2 dB.

MSS • 845-N Quince Orchard Boulevard • Gaithersburg, Maryland 20878 • U.S.A.

Telephone: (240) 631-1111

COM-1826

SPECTRUM MODEM

Facsimile: (240) 631-1676

TDRSS SPREAD-



Demodulated bits encapsulated in UDP frames

and sent out to the LAN. Support for IGMPv2

multicast addressing.



Monitoring:

o Receiver lock, Carrier frequency error,

SNR



ComScope

can be captured in real-time and displayed on

host computer.



90VAC – 264VAC power supply



Options:

o 1-3 receivers per 1 RU chassis

o Modulator with RF output

o Demodulator RF input

For the latest data sheet, please refer to the

web site: http://www.comblock.com/download/com1826.pdf.

These specifications are subject to change without notice.

For an up-to-date list of

refer to

http://www.comblock.com/product_list.html

www.ComBlock.com

Issued 11/27/2016

–enabled: key internal signals

ComBlock

modules, please