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Quasonix QSX-RDMS Series, Installation And Operation Manual

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Quasonix QSX-RDMS Series Installation And Operation Manual Download Page 1

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Summary of Contents for QSX-RDMS Series

Page 1: ...l service in house repair center WE BUY USED EQUIPMENT Sell your excess underutilized and idle used equipment We also offer credit for buy backs and trade ins www artisantg com WeBuyEquipment REMOTE INSPECTION Remotely inspect equipment before purchasing with our interactive website at www instraview com LOOKING FOR MORE INFORMATION Visit us on the web at www artisantg com for more information on ...

Page 2: ...on and Operation Manual QSX RDMS x xxxx Multi Mode Trellis Receiver Demodulator Bit Synchronizer Rev 1 2 18 August 2008 Artisan Technology Group Quality Instrumentation Guaranteed 888 88 SOURCE www artisantg com ...

Page 3: ...NTROL PROTOCOL 9 3 2 1 Tier 0 PCM FM Tier I SOQPSK TG and Tier II Multi h CPM Commands 10 3 2 2 PSK Commands 12 4 0 PERFORMANCE SPECIFICATIONS 14 4 1 RF INPUT 14 4 2 DC INPUT 14 4 3 RF FREQUENCY ERROR 14 4 4 BIT ERROR RATE 14 4 5 SYNCHRONIZATION 15 5 0 MAINTENANCE INSTRUCTIONS 17 6 0 IF MODULE 18 7 0 TECHNICAL SUPPORT RMA REQUESTS 21 Artisan Technology Group Quality Instrumentation Guaranteed 888 ...

Page 4: ...cluding o BPSK o QPSK o Offset QPSK OQPSK o Asymmetric QPSK AQPSK o Unbalanced QPSK UQPSK o Asymmetric Unbalanced QPSK AUQPSK o Digital PM The RDMS provides true trellis demodulation in ARTM Tier 0 Tier I and Tier II modes delivering BER performance within 0 2 dB of theory It also provides a clock signal two clock signals in the AQPSK and AUQPSK modes obviating the need for any outboard bit synchr...

Page 5: ...ckage 4 00 x 3 00 x 1 00 NV Non volatile memory RM 19 inch rack mount blank front panel FP Keypad display on front panel requires RM package DUAL Two receivers in one rack mount chassis requires RM For example a model QSX RDMS L 1101 AB is configured as follows QSX Quasonix product RDMS Receiver Demodulator Bit Synchronizer L L band operation 1101 Tier 0 present Tier I present Tier II absent Legac...

Page 6: ...ack mount option is specified the RDMS is designed to be mounted by eight 8 6 32 screws through the holes along the front and back edges as depicted in Figure 2 on the following page Artisan Technology Group Quality Instrumentation Guaranteed 888 88 SOURCE www artisantg com ...

Page 7: ...Page6 of 21 Figure 2 RDMS in 4 00 x 3 00 x 1 00 Airborne Housing Artisan Technology Group Quality Instrumentation Guaranteed 888 88 SOURCE www artisantg com ...

Page 8: ...ption 1 Disconnected Pin disconnected 2 GND Primary power return 2 amps maximum Internally tied to pins 3 6 and 10 3 Signal GND Ground return for TTL clock and data signals Internally tied to pins 2 6 and 10 4 Data Out Primary 3 3 volt TTL data output for all modes 5 Clock Out Primary 3 3 volt TTL clock output for all modes 6 232 Ground Ground return for RS 232 control lines Internally tied to pin...

Page 9: ...f TTL clock rising edge of ECL clock signal or rizing edge of TIA EIA422 A clock generator terminal Clock jitter and data to clock skew reference point Tx samples DATA on falling edge of TTL clock falling edge of ECLclock signal or falling edge of TIA EIA422 A clock terminal data 1 MARK data 0 SPACE CLOCK NRZL DATA Baseband Signal Timing 0 degree clock data 1 MARK Figure 4 Baseband Signal Timing T...

Page 10: ...S Serial Control Protocol The RDMS is controlled via a simple three wire serial interface transmit receive and ground Configure your controller s serial port to the following settings Baud rate of 115 200 8 bits No parity 1 stop bit For setup and configuration via a standard Windows based PC Quasonix recommends the use of Terminal a flexible full featured control interface that is included in the ...

Page 11: ...by the VL command The last response line is always the currently selected mode PCMFM SOQPSK CPM or PSK followed by the character or depending on the version of the firmware This prompt signifies that the RDMS is ready to accept new characters 3 2 1 Tier 0 PCM FM Tier I SOQPSK TG and Tier II Multi h CPM Commands Mnemonic Name Description Help Message Displays abbreviated list of available commands ...

Page 12: ...memory including frequency modulation bit rate data polarity clock polarity AGC state verbosity level etc RE Restart Demodulator Restart Demodulator without reconfiguration SC Saturation Count Report the saturation count PL Input Power Level Report current input power level VL Verbosity Level Report or set verbosity level on a scale of 0 9 Examples VL Report the verbosity level VL 0 Set the verbos...

Page 13: ...on a scale from 0 01 0 99 Examples VF Report the Viterbi forget factor VF 0 04 Set the Viterbi forget factor to 0 04 VF 0 62 Set the Viterbi forget factor to 0 62 VS Viterbi Status Report the Viterbi lock status and strength PS Show Parameters Displays all parameters AA AGC State Report or set the receiver s automatic gain control AGC Examples AA Report the AGC state AA 0 Set AGC off AA 2 Set AGC ...

Page 14: ...version on GO Start Restart Initiate demodulation with current parameters RE Restart Demodulator Restart Demodulator without reconfiguration SC Saturation Count Report the saturation count PL Input Power Level Report current input power level VL Verbosity Level Report or set verbosity level on a scale of 0 9 Examples VL Report the verbosity level VL 0 Set the verbosity level to 0 VL 5 Set the verb...

Page 15: ...from standard 120 VAC power 4 3 RF Frequency Error By default the RDMS is capable of acquiring a signal with a frequency error of up to 100 kHz 4 4 Bit Error Rate The RDMS meets the following BER limits when tested with a signal source which complies with IRIG 106 05 Maximum Eb N0 dB BER PCM FM Tier 0 SOQPSK TG Tier I Multi h CPM Tier II 10 3 7 5 9 5 11 0 10 4 9 0 11 5 12 5 10 5 10 0 13 0 13 5 10 ...

Page 16: ...st reliable acquisition even at very low signal to noise ratio Synchronization time is function of modulation type and IF frequency error Typical SOQPSK results from 10 000 synchronization trials are shown below Artisan Technology Group Quality Instrumentation Guaranteed 888 88 SOURCE www artisantg com ...

Page 17: ...Page16 of 21 Figure 7 Synchronization Time at Various Signal to Noise Ratios Artisan Technology Group Quality Instrumentation Guaranteed 888 88 SOURCE www artisantg com ...

Page 18: ...S requires no regular maintenance and there are no user serviceable parts inside Please consult the factory for any maintenance upgrade or repair requirements Artisan Technology Group Quality Instrumentation Guaranteed 888 88 SOURCE www artisantg com ...

Page 19: ...erter in the demod itself In addition they can provide an added measure of adjacent channel interference rejection The measured responses of the 8 filters are shown in Figure 9 and Figure 10 note the change of horizontal scale between the two Figures Figure 8 70 MHz IF Module in 2 x 3 Chassis The IF module attaches directly to the demod modules Artisan Technology Group Quality Instrumentation Guar...

Page 20: ...Page19 of 21 Figure 9 SAW Filter Responses Narrow Group Plotted on 10 MHz Span Artisan Technology Group Quality Instrumentation Guaranteed 888 88 SOURCE www artisantg com ...

Page 21: ...Page20 of 21 Figure 10 SAW Filter Responses Wide Group Plotted on 60 MHz Span Artisan Technology Group Quality Instrumentation Guaranteed 888 88 SOURCE www artisantg com ...

Page 22: ...addressed at the factory a returned materials authorization RMA number will be provided for return shipment Authorized return shipments must be addressed in the following manner Quasonix LLC ATTN Repair RMA ___________ 5493 Union Centre Drive West Chester OH 45069 Please note that Quasonix withholds the right to refuse incoming shipments without RMA numbers Artisan Technology Group Quality Instrum...

Page 23: ...l service in house repair center WE BUY USED EQUIPMENT Sell your excess underutilized and idle used equipment We also offer credit for buy backs and trade ins www artisantg com WeBuyEquipment REMOTE INSPECTION Remotely inspect equipment before purchasing with our interactive website at www instraview com LOOKING FOR MORE INFORMATION Visit us on the web at www artisantg com for more information on ...

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