Larus 9000 E1/DS1 SPREAD SPECTRUM 5.78 GHz DIGITAL RADIO User Manual

Larus Corporation E1/DS1 SPREAD SPECTRUM 5.78 GHz DIGITAL RADIO LARUS 9000 Operation

a href="https://usermanual.wiki/Larus" itemprop="url"> Larus >

LARUS 9000 Operation

1APPLICANT: LARUS CO.FCC ID: LYA 9000OPERATION OF THE LARUS MODEL 9000, 5.7 GHz DIRECT SEQUENCE SPREAD SPECTRUM RADIO TRANSMITTER.1. Summary. This transmitting system (hereafter referred to as Αtransmitter≅) provides point-to-point transmission of IF/RF carriers, modulated with a serial bit stream designed toprocess either four E1 or four T1 multiplexed carriers or digital baseband signals. The unitunder test is designated for E1 carrier traffic. This is not a Αpulsed≅ type transmittingsystem; the type of carrier modulation is 16QAM.The IF transmit frequency is at 140 MHz, where the modulated transmit carrier isspread and translated up to the radio transmit center frequencies of 5752.5 MHz (TX Low) or5822.5 MHz (TX Hi). The IF receive frequency is 70 MHz.The transmit-receive operating mode is full duplex, single channel within the ISMband, occupying the bandwidths of 5752.5 ∀ 22.5 MHz and 5852.5 ∀ 22.5 MHz. For thefrequency plan of this transmitter, see Figure 1.The Model 9000 system consists of two separate rack-mountable modules: the RFand Control modules. The RF Module contains the transmitter IF/spread circuits (to bedescribed in detail below.The Control Module is utilized for the status, control functionsand baseband/IF modulation/signal processing of the transmitter. It contains the E1/DS1mux , modulator/demodulator circuits and receive AGC.The antenna that connects to the bulkhead is not part of the transmitter. It is providedand installed by the customer in compliance with FCC regulations, as stated in theOperating and Installation Manual.2. List of transmitter main functions.1. 16QAM modulator to modulate the 140 MHz IF carrier with the incoming serial bit stream of the four multiplexed E1 carriers coming from the E1/DS1 Mux. 2. Spreading circuits that include the Code Multiplier containing the access code, the chip filter to attenuate unwanted products and to define the spectral shape of the modulated carrier. 3. IF chain to provide amplification, equalization and gain control/stabilization of the IF carrier before translating up to the 5.7 Ghz band. The RF drive level to theoutput power amplifier is set here as required, consistent with antenna size, orEIRP. 4. RF chain provides frequency translation of the 140 MHz IF, bandpass filtering and final amplification of the translated carrier at the 5.7 Ghz band.5. The transmit power amplifier provides rated power to the antenna through th diplexer which in turn feeds the receiver at the LNA input.
Download:
Mirror Download [FCC.gov]
Document ID88446
Application ID2RyvgiKeLCc4Q3T/5B82lA==
Document DescriptionLARUS 9000 Operation
Short Term ConfidentialNo
Permanent ConfidentialNo
SupercedeNo
Document TypeUser Manual
Display FormatMicrosoft Word - pdf
Filesize7.09kB (88577 bits)
Date Submitted2000-02-29 00:00:00
Date Available2000-04-13 00:00:00
Creation Date2001-04-06 11:44:30
Producing SoftwareAcrobat Distiller 4.0 for Windows
Document Lastmod2001-04-06 11:44:31
Document TitleLARUS 9000 Operation
FCC ID Filing: LYA9000

Navigation menu