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Generation Rack-

Mount RDMS™

Quasonix, Inc.

Figure 40: Main Menu, DQ Encapsulation

As noted above, the DQM is displayed as Signal Quality on the front panel, with a color-coded bar and a number
above it (0-10).

4.4.2.11 Derandomizer

The RM RDMS™ includes a derandomizer, which can be enabled (two modes) or disabled by selecting the

parameter from the Main Menu and pressing the Enter key on the front panel keypad. The default setting for the
derandomizer is Off.

Figure 41: Main Menu, Derandomizer

•

Off

•

IRIG

–

Derandomizes data randomized using the IRIG 15-stage randomizer

•

CCSDS

–

Derandomizes data randomized using the CCSDS 8-stage block synchronous randomizer, only

available when an LDPC Mode is enabled (SOQPSKLDPC, or STCLDPC) or Reed-Solomon decoding is
enabled

Содержание RDMS

Страница 1: ...Reserved Installation and Operation Manual 3rd Generation Rack Mount RDMS Telemetry Receiver Quasonix Inc 6025 Schumacher Park Dr West Chester OH 45069 01 May 2022 Revision 3 7 5 Applies to RDMS TM Sy...

Страница 2: ...elemetry Over IP IP 4 1 2 2 6 Viterbi Decoder for Legacy PSK Only K7 4 1 2 3 Band Configurations 5 1 2 3 1 Additional Band Codes 6 1 3 Package Contents 6 2 Specifications 7 3 Installation Instructions...

Страница 3: ...Mode 28 4 4 2 3 1 AQPSK Mode 29 4 4 2 4 Bit Rate 29 4 4 2 5 Power Ratio UQPSK Mode Only 31 4 4 2 6 Combiner Optional 31 4 4 2 7 Data Polarity 32 4 4 2 8 Clock Polarity 33 4 4 2 9 Equalizer Optional 33...

Страница 4: ...2 19 8 Best Channel Selector 62 4 4 2 19 9 Time Aligner 67 4 4 2 20 AFC Mode 68 4 4 2 20 1 AFC Mode Off 69 4 4 2 20 2 AFC Mode Track 69 4 4 2 20 3 AFC Mode Hold 69 4 4 2 21 PCM Encoding 70 4 4 2 22 FE...

Страница 5: ...Diversity Combiner 121 4 5 2 4 Monitor Selective Display Options 122 4 5 2 5 Client Level Update Rate 124 4 5 3 Configure Screen 125 4 5 3 1 Combiner Optional 125 4 5 3 1 1 Frequency Diversity Availab...

Страница 6: ...6 6 AGC Freeze 145 4 5 3 6 7 AGC Zero Mode 145 4 5 3 6 8 AGC Compensate 146 4 5 3 6 9 AM Bandwidth 146 4 5 3 6 10 AM Polarity 146 4 5 3 6 11 AM Scale 147 4 5 3 6 12 Downconvert Antenna 147 4 5 3 7 Clo...

Страница 7: ...odes 177 5 Maintenance Instructions 178 6 Product Warranty 179 6 1 Quasonix Limited Warranty Statement 179 6 1 1 Extended Warranties 180 7 Technical Support and RMA Requests 181 8 Appendix A Recommend...

Страница 8: ...lues 194 14 Appendix F RDMS with IP Option 198 14 1 Overview 198 14 2 Hardware 198 14 3 Set Up TMoIP IP Address 200 14 4 Browser Interface 200 14 4 1 TMoIP Monitor Configure Screen 201 14 4 2 TMoIP Ne...

Страница 9: ...igure 3 Mechanical Drawing 1U Top View Dual channel Connectors Shown 9 Figure 4 Mechanical Drawing 3U Front View 10 Figure 5 Mechanical Drawing 3U Top View Dual channel Connectors Shown 10 Figure 6 1U...

Страница 10: ...4 Main Menu Combiner Setting 32 Figure 35 Main Menu Data Setting 32 Figure 36 Main Menu Clock Setting 33 Figure 37 Main Menu Equalizer Setting 33 Figure 38 DQM Calibration Fixture Process 34 Figure 39...

Страница 11: ...0 Figure 73 Options Menu Save Receiver Settings 50 Figure 74 Options Menu Load Presets 51 Figure 75 Load Menu Load Presets 51 Figure 76 Save Menu Save Presets Slot 1 and Slot 3 Contain Saved Presets 5...

Страница 12: ...Selections 71 Figure 108 Advanced Menu FEC 71 Figure 109 FEC Menu LDPC Version 71 Figure 110 FEC Menu LDPC Code 72 Figure 111 LDPC Code Selections 72 Figure 112 Advanced Menu FEC 73 Figure 113 FEC Me...

Страница 13: ...gure 143 BERT Re Start BERT 87 Figure 144 BERT Pattern Selection 88 Figure 145 BERT User Defined Test Pattern Selection and Pattern Changed 88 Figure 146 BERT Type Continuous or Limit 89 Figure 147 BE...

Страница 14: ...and Graphics Menu Graph Type 109 Figure 183 PCM FM Eye Pattern 110 Figure 184 SOQPSK Constellation 110 Figure 185 PCM FM Spectrum Display 110 Figure 186 SOQPSK Spectrum Display 110 Figure 187 MHCPM C...

Страница 15: ...nced Settings Window 131 Figure 222 Advanced Settings Window IF Filter Menu 132 Figure 223 Advanced Settings Window AFC Mode Menu 133 Figure 224 Advanced Settings Window Best Channel Selector Checked...

Страница 16: ...or 3U Receivers 149 Figure 256 System Settings Test Utilities 150 Figure 257 Test Utilities Noise Generator Test Noise Drop Down Menu 151 Figure 258 Test Utilities Noise Generator Noise Level Selectio...

Страница 17: ...on Screen Monitor Page Default Update Rate Field 167 Figure 293 System Information Screen Interface Information 168 Figure 294 Browser Interface Footer Tool Bar 168 Figure 295 Help Screen 169 Figure 2...

Страница 18: ...er 211 Figure 332 Firefox Downloading Certificate Window 211 Figure 333 Firefox Certificate Viewer Quasonix Root CA 212 Figure 334 Firefox Certificate Manager with Quasonix Root CA Added 213 Figure 33...

Страница 19: ...Mode Selection 227 Figure 363 EVTM Embedded Transmitter EN Bit Rate Selection 228 Figure 364 EVTM Embedded Transmitter Variable Power Selection 228 Figure 365 EVTM Status Green Square Actual RF Output...

Страница 20: ...Table 17 SOQPSK Factory Reset Values 195 Table 18 Multi h CPM Factory Reset Values 196 Table 19 QPSK Factory Reset Values 197 Table 20 Reference Documents 198 Table 21 3U Rack Mount RDMS TMoIP Ports...

Страница 21: ...st station requirements The following waveform formats are supported by RDMS PCM FM ARTM Tier 0 SOQPSK TG ARTM Tier I ARTM CPM Multi h CPM ARTM Tier II Legacy PSK suite which includes BPSK QPSK Offset...

Страница 22: ...vered in IP format K7 Viterbi Decoder k 7 rate 1 2 For example a model QSX RDMS 3R1D Q0 1101 00 EQ is configured as shown in Table 1 Table 1 Model Configuration Example Identifiers Description QSX Qua...

Страница 23: ...compatible with standard telemetry applications and installations and it works with any brand of transmitter Multipath fading can seriously degrade the quality of wireless telemetry data Radio transmi...

Страница 24: ...data stream Convolutional encoding is a form of legacy forward error correction Like LDPC it adds redundant information at the transmitting end of a telemetry link and then uses that redundancy to de...

Страница 25: ...n Codes Freq Code A C E F G H J K L M P Q R S U W X Y Z Legend Frequency Gap Standard Base Frequency Range Extended Frequency Range available by selecting Extended Tuning 1 in part number P Lower L Up...

Страница 26: ...70 MHz extended range Band Code T 2025 0 MHz to 2110 0 MHz standard range 1 3 Package Contents The contents of the box include the following Rack Mount receiver unit 1U or 3U Power cord Ethernet cabl...

Страница 27: ...1 KOhm AGC time constant Adjustable to any value from 0 1 ms to 1000 ms First IF bandwidth 60 MHz nominal IF rejection 90 dB Image rejection 70 dB RF input impedance 50 ohms VSWR 3 1 Max 2 1 Typical...

Страница 28: ...ps Tier I 6 0 dB Eb N0 RF Input dBm 116 0 1 Mbps 106 0 10 Mbps Tier II 15 0 dB Eb N0 RF Input dBm 125 0 1 Mbps 115 0 10 Mbps Sensitivity BER 1e 5 Tier 0 8 6 dB Eb N0 RF Input dBm 101 4 1 Mbps 91 4 10...

Страница 29: ...1 1 1U Rack Mount The 1U RM RDMS Telemetry Receiver s enclosure fits in a standard 19 rack occupying just 1U of rack space Mechanical layouts are provided in Figure 2 and Figure 3 Figure 2 Mechanical...

Страница 30: ...The 3U RM RDMS Telemetry Receiver s enclosure fits in a standard 19 rack occupying 3U of rack space Mechanical layouts are provided in Figure 4 and Figure 5 Figure 4 Mechanical Drawing 3U Front View F...

Страница 31: ...l 3 3 1 1U Rear Panel Connections Rear panel connectors are the same for all receivers however in a single channel configuration all connectors are not active An optional pre detection diversity combi...

Страница 32: ...is available in the dual channel receiver configuration Connectors for the diversity combiner EVTM and TMoIP are present whether the feature is ordered or not The electrical interface connectors for...

Страница 33: ...ntrol J80 RDMS Control or TMoIP Control EVTM Data J81 RJ 45 T568A Ethernet via Telemetry Data EVTM TMOIP J82 RJ 45 T568A Telemetry over IP Data Stream Out TMoIP TMOIP USB J83 Keyboard Mouse access for...

Страница 34: ...RS422 Clock A_p J23 1 J23 5 J23 9 J20 1 J45 1 J70 1 RS422 Clock A_n J23 14 J23 18 J23 22 J20 14 J45 14 J70 14 RS422 Data A_p J23 2 J23 6 J23 10 J20 2 J45 2 J70 2 RS422 Data A_n J23 15 J23 19 J23 23 J...

Страница 35: ...Data B TTL 12 GND 25 COMB CLK B TTL 13 GND 3 3 2 2 1U RS 422 Output MDM 25 D Sub Pinout J23 The pinout for the 1U J23 an MDM 25 D sub connector is shown in Table 7 Pin locations are shown in Figure 8...

Страница 36: ...3rd Generation Rack Mount RDMS 16 Quasonix Inc Figure 8 1U MDM 25 D Sub Pin Locations for J23 and J9...

Страница 37: ...recommended Quasonix recommends running Firefox in Private mode or disabling caching to improve performance HTML5 compatibility is required The Browser Interface BI provides easy to read real time st...

Страница 38: ...browser as http XXX XXX XXX XXX where the X s represent the IP address of the rack The main Browser Interface web page displays in the browser window and the user has control of the rack For issues t...

Страница 39: ...window on the Browser Interface at the same time is notified of changes so unsaved modifications are not overwritten Users may also access the RDMS remotely via Telnet Telnet provides access to the i...

Страница 40: ...e left most LCD and receiver settings are on the second LCD from the left A static Quasonix logo is shown on the two right most LCDs In a dual channel receiver the two LCDs located to the right of the...

Страница 41: ...in Figure 13 An example of an SOQPSK constellation is shown in Figure 14 Additional information about waveform graphics displays including spectrum displays is located in section 4 4 2 28 Figure 13 E...

Страница 42: ...signal by itself does not provide enough information about the integrity of the received data Therefore the Data Quality Metric DQM is displayed to the right of the signal strength bar with Q below th...

Страница 43: ...is under active control features a white header bar and green text The channel number displays in the top right hand corner of the screen In Figure 18 CH C designates Combiner When the Combiner is On...

Страница 44: ...Frequency Diversity Diversity Combiner On Mode Bit Rate Power Ratio UQPSK mode only Combiner Data Polarity Clock Polarity Equalizer DQ Encapsulation Derandomizer Modulation Scaling PCM FM mode only M...

Страница 45: ...ard or backward depending on which arrow key is pressed Figure 20 Front Panel Keypad To change a setting or access a secondary menu use the arrow keys to navigate to the parameter When highlighted the...

Страница 46: ...The default frequency is highlighted The user can use the front panel keypad to a Delete the entire number by pressing the left arrow key b Move the cursor to the end of the number by pressing the rig...

Страница 47: ...sation is available but the input signal must be within the range 30 dBm 10 dB to obtain optimal performance Mod scaling Acquisition mode the default accurately determines the modulation index of a si...

Страница 48: ...o the desired mode and then press the Enter key Figure 26 Main Menu Mode Setting Due to character limitations in the on screen menu some modulation names have been shortened The following table lists...

Страница 49: ...nit is temporarily unavailable during this time 4 4 2 3 1 AQPSK Mode Note that AQPSK mode results in two independent bit streams out of the RDMS The I data is available on the normal clock and data ou...

Страница 50: ...plays a bit rate dialog screen prompting the operator to enter a bit rate using the rack s front panel numeric keypad in Mbps A decimal point is only needed for bit rates with fidelity down into the k...

Страница 51: ...tween the two components This degree of unbalance is specified in dB For example if the I component has four 4 times the power of the Q component the power ratio will be 10 log10 4 1 6 dB If the I com...

Страница 52: ...synchronization of settings the second channel s settings menu highlight bar will mimic the navigation path being taken by the user in the first channel Note Whenever the Diversity Combiner is On any...

Страница 53: ...y enabling the equalizer multipath fading is reduced and overall link availability is improved The Equalizer option is toggled On or Off using the Enter key on the front panel keypad The EQ Adaptive E...

Страница 54: ...ulated likelihood that a bit is in error A very low BEP can be determined from only a few bits BEP does not require any known data and can be determined quickly and accurately from demodulator statist...

Страница 55: ...1 00000E 12 65535 12 00 Figure 39 DQE Format Payload data is a user selectable length with a default of 4096 bits unless block decoding is in use In STC mode the default is 3200 bits In SOQPSK LDPC o...

Страница 56: ...be enabled two modes or disabled by selecting the parameter from the Main Menu and pressing the Enter key on the front panel keypad The default setting for the derandomizer is Off Figure 41 Main Menu...

Страница 57: ...ation indexes greater than 1 0 4 4 2 12 1 Modulation Scaling Tracking When the RDMS is powered on the default setting is Acquire unless the unit was powered off from a preset condition If the unit was...

Страница 58: ...set to Hold by highlighting the Mod Scaling option on the Main Menu and then pressing the Enter key on the keypad When Modulation Scaling is set to Hold the graphing eye pattern is displayed in GREEN...

Страница 59: ...ttern Display Off With Mod Scaling turned Off the Mod Index is set to the optimal 0 700 Mod Scaling should be turned off when a new generation digitally synthesized transmitter is the source Digitally...

Страница 60: ...ered back to Armed except for setting the mode to Acquire again 4 4 2 13 Modulation Persistence PCM FM Mode Only The Mod Persist option allows the current state of the Mod Scaling setting to be retain...

Страница 61: ...rack HyperTrack is an all digital antenna control protocol that offers many benefits in antenna tracking performance and system operation These benefits are too numerous and wide ranging to describe f...

Страница 62: ...GC Automatic Gain Control menu shown in Figure 57 includes the following parameters Polarity Positive Negative AGC Scale dB V Time Constant in ms AGC Freeze AGC Zero Mode Zero AGC 4 4 2 16 1 AGC Polar...

Страница 63: ...en a signal of 80 dBm is received i e 20 dB above the zero point then the AGC output will be 2 0 V if the scale is set to 10 dB V and 1 0 V if the scale is set to 20 dB V The maximum AGC output voltag...

Страница 64: ...press the Enter key on the keypad Figure 59 Time Constant Selection and Time Constant Entry Screens Refer to Appendix B for additional details about recommended AGC AM settings 4 4 2 16 4 AGC Freeze A...

Страница 65: ...a user scrolls through the AGC Zero Mode options AGC zero is cleared when Manual is selected Hold Means the AGC will hold its zero level after any frequency or IF bandwidth change but must be zeroed m...

Страница 66: ...ed in the following example 1 Connect the receiver to its normal RF signal source such as antenna LNA cabling and splitters 2 Orient the receiving antenna in a direction that is expected to yield the...

Страница 67: ...ts minimum value This process ensures that the AGC output voltage will not cross through zero volts DC under normal operation Note As mentioned in section 4 4 2 16 4 AGC Zero is cleared if a user scro...

Страница 68: ...hen press the Enter key on the front panel Figure 66 AM Menu AM Bandwidth Highlighted Figure 67 AM Bandwidth Entry Screen An entry screen prompts the operator to enter a new AM Bandwidth using the rac...

Страница 69: ...AM Scale using the rack s front panel numeric keypad as shown in Figure 70 When the new value is entered press the Enter key on the keypad The AM Scale has a range from 128 to 128 At its default setti...

Страница 70: ...s option shown in Figure 73 saves the current RDMS parameters For example the user may have changed a variety of parameters since the last shutdown power up of the receiver and does not want to lose t...

Страница 71: ...mpty preset A brand new RDMS contains eight default presets The Save Presets Menu allows the current settings to be saved for convenient retrieval at a later time or for quickly switching between conf...

Страница 72: ...y Default reset does not affect Ethernet settings or presets Figure 77 Options Menu Factory Default Selection and Reset in Process 4 4 2 19 Advanced Menu The Advanced Menu should only be accessed by a...

Страница 73: ...currently measuring on the input signal The purpose of this process is to eliminate unintended bit rate offset error so that the receiver can make full use of its bit synchronizer tracking range or o...

Страница 74: ...e receiver indicates it is locked green padlock prior to using the Sync Bit Rate function 4 4 2 19 2 IF Filter The receiver s integrated IF filter module shown in Figure 80 includes eight 8 SAW filter...

Страница 75: ...o figures Six additional filters are available allowing for a total of 14 The optional filters are 70 kHz 1 4 MHz 3 MHz 6 MHz 14 MHz and 28 MHz The measured responses of the optional filters are shown...

Страница 76: ...3rd Generation Rack Mount RDMS 56 Quasonix Inc Figure 82 SAW Filter Responses Wide Group Plotted on 100 MHz Span...

Страница 77: ...3rd Generation Rack Mount RDMS 57 Quasonix Inc Figure 83 Optional SAW Filter Responses for 70 kHz to 6 MHz...

Страница 78: ...mended In the case of a receiver with diversity combining enabled the two channels must have the same IF filter selected for proper operation Figure 85 Front Panel Advanced Menu and IF Filter Menu 4 4...

Страница 79: ...gure 87 is used to set a timeout value in milliseconds This setting is used to determine when to mute stop sending data when the Muting option is set to On Figure 87 Advanced Menu Muting Timeout Selec...

Страница 80: ...nge the information is muted stopped so the recorder is not filled with bad data Figure 89 Advanced Menu Muting Selection The user may toggle the Muting value On or Off by pressing the Enter key on th...

Страница 81: ...also has actual C band receiver capability an ambiguity develops when a C band frequency is specified since it can be applied to either a C or P band signal The downconverting antenna setting determin...

Страница 82: ...Figure 92 Mod Scale Index Entry To clear any locked modulation scale index number go to the Main Menu and toggle the Mod Scaling option back to Tracking After Mod Scaling is set to Tracking the modula...

Страница 83: ...quency diversity with different multipath on Channel 1 and Channel 2 If the signal to noise ratio is equal on both received channels the combined signal will be composed of half of each This summed si...

Страница 84: ...erages the strengths of both Best Channel Selector Status Best Channel Selector status is only displayed with the Combiner option enabled and set to On This status displays in the right hand side of t...

Страница 85: ...quality In general the Combiner is expected to be the best channel However many conditions may lead to selection of Channel 1 or Channel 2 as the best channel One common condition is multipath Another...

Страница 86: ...and 0 of the worse signal Figure 98 Best Channel Indicator Ch 2 Figure 99 illustrates severe equalized multipath for Channel 1 and moderate equalized multipath for Channel 2 Note in this case the Comb...

Страница 87: ...hannel 2 input signals are accurately phase and time aligned Traditionally diversity combiners have performed phase alignment only relying on the telemetry system design to provide adequate time align...

Страница 88: ...rate If the input frequency offset is greater than this amount then AFC is needed to make up the difference Therefore AFC is particularly applicable to lower bit rates and may be automatically overri...

Страница 89: ...4 2 20 2 AFC Mode Track When AFC Mode is set to Track as shown in Figure 104 the AFC continuously attempts to estimate and compensate for the input frequency offset unless the input Eb N0 falls below...

Страница 90: ...mark DM S Delay modulation Miller code space M2 M Modified delay modulation Miller squared code mark M2 S Delay modified modulation Miller squared code space The second option allows the transmit enc...

Страница 91: ...t and correct errors at the receiving end of the link Details of LDPC coding are presented in IRIG 106 17 Appendix 2 D LDPC encoding can have many benefits Its most common use is in range extension wh...

Страница 92: ...derandomization as specified in IRIG 106 17 Annex A 2 or CCSDS derandomization as specified in IRIG 106 17 Appendix 2 D Again the derandomization selection must match the encoding selected at the tra...

Страница 93: ...r convolutional encoding requires more bandwidth than all but the lowest rate LDPC codes and its error correcting performance is inferior to LDPC Therefore LDPC is the preferred forward error correcti...

Страница 94: ...Symbol to Disabled as shown in Figure 116 In older releases without the Convolutional Symbol control this was the only method supported Figure 116 FEC Menu Conv Symbol The second method is for I and...

Страница 95: ...ors Details of Reed Solomon encoding are presented in CCSDS 131 0 B 2 Section 4 The specific variant of Reed Solomon decoder implemented is the 255 223 code While Reed Solomon encoding can be used by...

Страница 96: ...ess the Enter key on the front panel A dialog screen displays prompting the operator to enter a new depth using the rack s front panel numeric keypad The valid Interleave Depth range is 1 to 8 The Ind...

Страница 97: ...efault Video Output Signals Mode I Video A Q Video B PCM FM Eye Pattern Unused 0 Volts SOQPSK SOQPSK LDPC Noncoherent I Q Baseband Noncoherent I Q Baseband MHCPM Noncoherent I Q Baseband Noncoherent I...

Страница 98: ...Selection 4 4 2 23 3 Channel A Scale The Channel A Scale option shown in Figure 124 adjusts the peak to peak amplitude on the I Video A output By default the video output is 1 0000 V peak to peak usin...

Страница 99: ...is entered press the Enter key on the keypad Figure 125 Video Output Menu Channel B Scale Selection 4 4 2 23 5 Tape Out Frequency The Tape Out Frequency option shown in Figure 126 sets the carrier fr...

Страница 100: ...the following options Channel A Output Channel B Output Figure 128 Advanced Menu Clk Data Output Menu 4 4 2 24 1 Channel A Output The Channel A Output options shown in Figure 129 select what signals a...

Страница 101: ...capsulated otherwise it is not No DQE Selecting No DQE bypasses data quality encapsulation Test Data Selecting Test Data causes the output of the Data Generator to display on Channel B clock and data...

Страница 102: ...rator BERT Figure 132 Advanced Menu Test Utilities 4 4 2 26 1 Noise Generator The Noise Generator shown in Figure 133 optionally sums AWGN Additive White Gaussian Noise with the received signal to ach...

Страница 103: ...Selection 4 4 2 26 2 Data Generator The Data Generator option shown in Figure 135 allows the user to generate data patterns at a settable data rate This data may be used as known source data for syste...

Страница 104: ...that repeats based on the chosen pattern sequence a shorter pattern looks more regular a longer pattern looks more random PN6 Pseudorandom pattern 26 1 bits in length PN9 Pseudorandom pattern 29 1 bi...

Страница 105: ...person running the test only available when Pattern is User Defined Figure 138 Data Generator User Defined Test Pattern Selection Inversion Set to Normal or Inverted when Inverted the data stream is i...

Страница 106: ...shown in Figure 141 allows the user to measure system performance It does this by comparing received data to a specified data pattern and counting the ratio of errored bits to total received bits This...

Страница 107: ...s or disables Bit Error Rate BER measurement Figure 142 BERT Measurement Re Start BERT Starts or restarts the BER test measurement with an error count and total bit count of zero indicates whether a m...

Страница 108: ...bits in length PN11 Pseudorandom pattern 211 1 bits in length PN15 Pseudorandom pattern 215 1 bits in length PN17 Pseudorandom pattern 217 1 bits in length PN20 Pseudorandom pattern 220 1 bits in leng...

Страница 109: ...bit limit or errored bit limit is reached Figure 146 BERT Type Continuous or Limit Time Limit s in seconds Sets a specific time limit for the BER measurement the measurement completes when the time l...

Страница 110: ...f errored bits has been received Figure 149 BERT Error Limit Gating Selects the action that occurs when the current measurement completes this can be to stop or to run a new measurement as shown in Fi...

Страница 111: ...bit count to zero whenever the BERT loses pattern sync this effectively restarts any measurement that may be inaccurate due to BERT synchronization loss Figure 151 BERT Restart on Resync 4 4 2 27 Syst...

Страница 112: ...Settings menu includes the following parameters System Info Ethernet Web Server Fan Control System Update Figure 153 System Settings Menu System Info Highlighted 4 4 2 27 1 System Info The System Info...

Страница 113: ...t address MAC address Alias and Secure Name Model Model describes the type of Quasonix receiver in use Serial Number Serial number describes the Quasonix manufacturing serial number which identifies t...

Страница 114: ...The IP address for the rack unit will either be assigned to it automatically through the use of DHCP or it must be entered by the user When choosing an IP address it is critical that the address is un...

Страница 115: ...entify a particular rack in the displayed list Examples of a rack alias might be RDMSLab1 TestLabLevel4 or XYZProjectRDMS System IP The System IP address for the rack unit is assigned automatically It...

Страница 116: ...tween On and Off IP Address The IP Address must be assigned manually when DHCP is not in use on a network 1 To assign an IP address use the down arrow on the keypad to highlight the IP Address Figure...

Страница 117: ...twork administrator for the correct gateway address 1 To assign the Gateway IP address use the down arrow on the keypad to highlight Gateway Figure 163 then press the Enter key 2 Type the Gateway addr...

Страница 118: ...ications between the client and server It also enables authentication of the accessed website via a system of verified and trusted certificates Enabling HTTPS on the RDMS ensures that the connection i...

Страница 119: ...3rd Generation Rack Mount RDMS 99 Quasonix Inc Figure 167 Firefox HTTPS Connection Without Quasonix Certificate Imported Figure 168 Edge HTTPS Connection Without Quasonix Certificate Imported...

Страница 120: ...nternet Explorer HTTPS Connection Without Quasonix Certificate Imported In order to instruct the browser to trust the certificate provided by the RDMS the user must import the Quasonix Root Authority...

Страница 121: ...y entering https followed by the IP address of the RDMS for example https 192 168 222 22 When the connection is made you may operate the interface just as you would with the standard HTTP interface Th...

Страница 122: ...Server screen 7 Upload your Certificate Authority certificate to your web browser In these instructions Quasonix recommends the use of OpenSSL v1 1 1d or newer Other tools and methods are available to...

Страница 123: ...ns v3_ca req_distinguished_name See https en wikipedia org wiki Certificate_signing_request countryName Country Name 2 letter code stateOrProvinceName State or Province Name localityName Locality Name...

Страница 124: ...reate one This only needs to be done once if you are signing multiple server certificates Change directory to the directory you created above and perform these steps 1 Generate CA Key a openssl genrsa...

Страница 125: ...cted capability and is limited to uploading files and changing its password The default password for the user admin is QRSAtMC3L53HXLgtx The password should be changed by the user but understand that...

Страница 126: ...r to provide the name to IP address translation for Browsers using a name This name must also be included in the User Certificate that you ve generated for the RDMS refer to section 4 4 2 27 3 1 1 If...

Страница 127: ...s or Ext4 Linux The update file must NOT be renamed and must be the only update file on the USB drive 3 Access the System Update screen as shown in Figure 176 Press the Enter key 4 Select Perform Loca...

Страница 128: ...te Screen Update File Selected 8 Press Enter to start the update The RDMS copies the update file from the USB drive and begins the update Do not power off the RDMS during the update During the update...

Страница 129: ...cs menu from the front panel Main Menu Select Graphics Menu then press the Enter key on the front panel keypad The Graphics menu includes the following parameters Graph Type Signal Strength 4 4 2 28 1...

Страница 130: ...M FM Eye Pattern Figure 184 SOQPSK Constellation Figure 185 PCM FM Spectrum Display Figure 186 SOQPSK Spectrum Display Multi h CPM MHCPM The constellation for MHCPM shown in Figure 187 is synthetic in...

Страница 131: ...ce Time Coding STC mode of operation the data stream is encoded into two separate signals that each contain a complete copy of the source data These two signals are transmitted simultaneously on the s...

Страница 132: ...one and degrades if it progresses into the yellow and red zones The indicators on the right side of the screen receive signal level dBm and DQM are exactly the same as in the other modes Figure 189 ST...

Страница 133: ...f zero on the front panel signal display indicates no input signal A value above zero indicates how strong the signal is above no input Figure 191 Main Menu Graphics Menu Selection and Graphics Menu S...

Страница 134: ...quick snapshot of each rack mount receiver down to the channel level The screen is comprised of a table with columns for RDMS address Configuration Name Channel Frequency Mode Bit Rate signal strength...

Страница 135: ...3rd Generation Rack Mount RDMS 115 Quasonix Inc Figure 193 Network Screen with Multiple Receivers and Active Channels Figure 194 Network Screen Closeup of Left Side Combiners Only...

Страница 136: ...Monitor Screen The Monitor screen may be accessed via the Monitor buttons on the Network screen as described previously or via the Monitor option on the Tool bar as shown in Figure 196 Figure 196 RDM...

Страница 137: ...h as frequency mode bit rate Signal indicators including lock detect signal strength signal quality best channel combiner link status Graphical representations of the spectrum Zero AGC button For user...

Страница 138: ...Bit Rate is provided at the bottom of the display when the combiner is On as shown in Figure 199 or displayed in the center of the screen between Channel 1 and Channel 2 when the combiner is Off as s...

Страница 139: ...onto a downconverted signal a locked closed padlock displays Conversely if the receiver has not locked onto a signal or has recently lost lock the indicator turns red and displays as an unlocked padlo...

Страница 140: ...ero AGC Signal Display Relative The Data Quality Metric Q graph displays to the right of the Signal Strength graph The DQM range is 0 to 10 with 10 being the best possible quality Note The integrated...

Страница 141: ...raph display in the area between the two channels on the Monitor The Diversity Combiner with a signal lock green is shown in Figure 204 Figure 204 Diversity Combiner Link with Locked Signal If diversi...

Страница 142: ...ction 4 4 2 19 8 1 for detailed information and examples of the BCS display When the Combiner is On the Zero AGC button displays under the DQM graph 4 5 2 4 Monitor Selective Display Options The down...

Страница 143: ...3rd Generation Rack Mount RDMS 123 Quasonix Inc Figure 206 Monitor Full Display Default Figure 207 Monitor Eye Pattern Constellation Display Only...

Страница 144: ...to change in increments between low medium and high The user may press the Stop button to temporarily pause the screen transmission This has the effect of taking a snapshot in time freezing the page a...

Страница 145: ...viously or via the Configure option on the Header Tool bar as shown in Figure 211 Figure 211 RDMS Browser Interface Header Tool Bar All changes to configuration parameters are highlighted in green unt...

Страница 146: ...be set to the same value However if Mod Scaling was set to Locked when the Frequency was changed Mod Scaling will change to Tracking 4 5 3 1 1 Frequency Diversity Available with Diversity Combiner The...

Страница 147: ...capsulation and Derandomizer The Power Ratio control is available for UQPSK mode only A selection box displays below the Bit Rate option in UQPSK mode Refer to section 4 4 2 5 for specific information...

Страница 148: ...ntil the user clicks on the Save Presets button New options are provided to the user when certain options are selected for example Frequency Diversity and Time Aligner are only available after Combine...

Страница 149: ...modes SOQPSK and legacy BPSK QPSK OQPSK AQPSK AUQPSK and UQPSK Legacy modes often use differential forms of PCM encoding e g NRZ M instead and only one or the other form of differential encoding shou...

Страница 150: ...ary window for Advanced Settings These include Measured Bit Rate IF Filter Output Muting Muting Timeout AFC Mode Best Channel Selector Time Aligner and PCM Encoding as shown in Figure 221 Additionally...

Страница 151: ...s automatically selected based on the current mode and bit rate settings of the demodulator Although manual filter selection is available through the IF Filter Menu manual selection is not recommended...

Страница 152: ...for frequency offset in the received signal relative to the expected carrier frequency Demodulators for all modes in the RDMS contain frequency tracking loops that can accommodate some amount of frequ...

Страница 153: ...Hold When AFC Mode is set to Hold the AFC holds its current compensation This mode is best suited for static frequency offsets It may be advantageous relative to the Acquire mode if the channel is in...

Страница 154: ...ally diversity combiners have performed phase alignment only relying on the telemetry system design to provide adequate time alignment However there are cases in which time alignment cannot be easily...

Страница 155: ...ows conversion of any of the following encoding formats to NRZ L NRZ L Non return to zero level NRZ M Non return to zero mark NRZ S Non return to zero space RZ Return to zero Biphase L Bi level Biphas...

Страница 156: ...gnals Mode I Video A Q Video B PCM FM Eye Pattern Unused 0 Volts SOQPSK SOQPSK LDPC Noncoherent I Q Baseband Noncoherent I Q Baseband MHCPM Noncoherent I Q Baseband Noncoherent I Q Baseband BPSK I Bas...

Страница 157: ...l This setting allows the user to compensate for a system where this is not the case Figure 230 Advanced Settings Window Channel B Video Scale 4 5 3 3 13 Tape Output Frequency The Tape Out Frequency o...

Страница 158: ...in Figure 235 All of these forms of FEC are discussed in detail in the associated front panel sections LDPC in section 4 4 2 22 1 Viterbi Decoder in section 4 4 2 22 2 Convolutional Symbol in section...

Страница 159: ...l to the desired setting Figure 235 Forward Error Correction Window when in a PSK Mode 4 5 3 5 Advanced PCM FM Settings The Advanced PCM FM Settings window is shown in Figure 236 When the modulation i...

Страница 160: ...on scale index is set the Modulation Scaling option on the Configure screen is simultaneously changed to Hold The Hold notation includes the new index number that the operator has chosen If the held i...

Страница 161: ...last settling point the current scaling is updated with the new estimate There is no transition from Triggered back to Armed except for setting the mode to Acquire again 4 5 3 5 3 Mod Scale Index The...

Страница 162: ...s present estimate of the mod index 4 5 3 5 4 Phase Noise Compensation The Phase Noise Compensation PNC option is used to set the Phase Noise Compensation value to On Off or Auto Refer to Appendix C i...

Страница 163: ...range based tracking bandwidth ability to track through strong interfering signals rejection of incidental AM e g from spinning test articles and optimal multi receiver tracking Enabling HyperTrack s...

Страница 164: ...C Polarity Selection 4 5 3 6 4 AGC Scale The AGC Scale option shown in Figure 246 adjusts the voltage of the AGC back panel BNC output The scale can be set in units of dB V decibels per volt The highe...

Страница 165: ...AGC Freeze option disables the hardware gain compensation loop such that gain from the RF input to the IF output is fixed The receiver front end becomes a constant gain block which may be useful for...

Страница 166: ...49 Antenna Controls Window AGC Zero Hold Drop Down Menu 4 5 3 6 8 AGC Compensate The user may enable AGC Compensation by clicking on the check box Refer to Appendix B for more information about the AG...

Страница 167: ...r frequency range known as P band 400 MHz 1150 MHz using an LO frequency of 5550 MHz This results in two issues that are addressed by the downconverting antenna control 1 Spectral Inversion In a downc...

Страница 168: ...t is assumed there is no downconverting antenna The receiver is tuned to the actual P band frequency and the automatic spectral inversion is disabled 4 5 3 7 Clock Data Output Controls The Clock Data...

Страница 169: ...Test Data Selecting Test Data causes the output of the Data Generator to display on Channel B clock and data Figure 254 Output Controls Clock Data Output Channel B 4 5 3 8 Clock Data Output Controls 3...

Страница 170: ...enerator The Noise Generator selection shown in Figure 257 optionally sums AWGN Additive White Gaussian Noise with the received signal to achieve the desired Eb N0 Since the bit error rate of an ideal...

Страница 171: ...r The Data Generator option shown in Figure 259 allows the user to generate data patterns at a settable data rate This data may be used as known source data for system testing including transmitter or...

Страница 172: ...er pattern looks more regular a longer pattern looks more random PN6 Pseudorandom pattern 26 1 bits in length PN9 Pseudorandom pattern 29 1 bits in length PN11 Pseudorandom pattern 211 1 bits in lengt...

Страница 173: ...Figure 264 not recommended for PN15 data due to potential conflict between the sequence generator and the randomizer both of which are based on the same generator polynomial Figure 264 Data Generator...

Страница 174: ...us display continually updates for the duration of a BER test Enabled Green when enabled Running Green when running Inverted Yellow if inverted Sync Loss Red when sync loss occurs Time Count seconds T...

Страница 175: ...wn in Figure 268 One or two buttons are available depending on the number of channels and the combiner mode Figure 268 Advanced Buttons Zero AGC Button Separate Channels or Combiner Active Zero AGC is...

Страница 176: ...is at its minimum value This process ensures that the AGC output voltage will not cross through zero volts DC under normal operation To confirm AGC Zero view the Monitor screen Signal Strength bar gra...

Страница 177: ...RSSI Relative A value of zero indicates no input signal A value above zero indicates how strong the signal is above no input dBm displayed Figure 202 indicates AGC is not zeroed and the value is inval...

Страница 178: ...is no remote command to restart the hardware Power must be removed and reapplied If the user intends to immediately restart the RDMS it is important to wait until the indication that the unit is offl...

Страница 179: ...example the user may have changed a variety of parameters since the last shutdown power up of the receiver and does not want to lose the settings in the event of a power outage It is similar to saving...

Страница 180: ...om the Presets option in the Tool Bar Saved Presets screen shown in Figure 277 allows the user to save and load settings stored on the RDMS receiver Closeups of the right and left side of the Presets...

Страница 181: ...ght 8 saved setup files Files are accessed by clicking on the View Modify button next to the desired preset When the user clicks on a View Modify button the Preset View or Modify Preset screen opens a...

Страница 182: ...e configured by clicking on a check box to enable or disable an option clicking on a drop down menu and making a selection or in the case of Frequency and Bit Rate typing the number directly or using...

Страница 183: ...iew or Modify Preset Screen Information Successfully Saved Message When the user clicks on the Presets option in the Menu bar the Saved Presets screen displays clearly showing the new preset as shown...

Страница 184: ...2 Load Presets Loading a preset configuration is a quick way to set up an RDMS with specific settings The RDMS has eight 8 default configurations pre loaded and ready to use on the receiver As shown i...

Страница 185: ...no longer displays Figure 287 Loading Preset Please Wait Message on Front Panel 4 5 5 About To access the System Information screen click on the About option on the Tool bar as shown in Figure 288 Fig...

Страница 186: ...formation Screen Figure 290 System Information Screen Additional Information SD Card information displays when the user clicks on the as shown in Figure 291 It provides details about the SD card in th...

Страница 187: ...pdate button to save the change A message displays to remind the user to manually restart the receiver A system restart is required for the rate change to take effect Resetting to Factory Defaults doe...

Страница 188: ...n in Figure 294 provides access to additional Browser Interface functionality Figure 294 Browser Interface Footer Tool Bar 4 5 6 1 Help The Help option on the Footer Tool bar provides a link to the Ra...

Страница 189: ...ser sessions that may be occurring on the receiver As noted earlier the 3rd Generation RDMS receiver uses a built in web server to provide monitoring and control Multiple users may access the receiver...

Страница 190: ...lity may be useful to provide a record of settings used during test missions as a way to quickly switch between receiver setups or as a way to backup the receiver settings The files are saved locally...

Страница 191: ...Configuration Screen 1 Click on the Browse button to open a File Upload window on the desktop 2 Click on the Upload File button After the import file is selected the Import Configuration screen allows...

Страница 192: ...3rd Generation Rack Mount RDMS 172 Quasonix Inc Figure 300 Import Configuration Selection Window...

Страница 193: ...frequency error of up to 100 kHz 4 9 Bit Error Rate The RDMS meets the following BER limits when tested with a signal source which complies with IRIG 106 17 Table 11 RDMS BER Specifications BER Maxim...

Страница 194: ...n even at very low signal to noise ratio Synchronization time is a function of modulation type and IF frequency error Typical SOQPSK results from 10 000 synchronization trials are shown in Figure 302...

Страница 195: ...3rd Generation Rack Mount RDMS 175 Quasonix Inc Figure 302 Synchronization Time at Various Signal to Noise Ratios...

Страница 196: ...nd Configuration Codes Freq Code A C E F G H L M P Q R S U W X Y Z Legend Frequency Gap Standard Base Frequency Range Extended Frequency Range available by selecting Extended Tuning 1 in part number P...

Страница 197: ...RDMS 177 Quasonix Inc 4 11 1 Additional Band Codes Two additional band codes are available Band Code 7 Through the IF Input 70 MHz through SAW filters 0 075 MHz 20 MHz 70 MHz Band Code T 2025 0 MHz to...

Страница 198: ...3rd Generation Rack Mount RDMS 178 Quasonix Inc 5 Maintenance Instructions The Rack Mount receiver requires no regular maintenance and there are no user serviceable parts inside...

Страница 199: ...he Products At no time shall requests for changes in the software architecture or visual esthetics be considered a warranty item The Products are manufactured using new materials only Replacement part...

Страница 200: ...r e by modification or service by anyone other than i Quasonix ii an Quasonix authorized service provider or iii your own installation of end user replaceable Quasonix or Quasonix approved parts if av...

Страница 201: ...nt Authorized return shipments must be addressed in the following manner Quasonix Inc ATTN Repair RMA 6025 Schumacher Park Drive West Chester OH 45069 To ensure that your shipment is processed most ef...

Страница 202: ...sts the AM output to neutralize these effects This allows the AGC to fully track out undesired AM at frequencies just below the antenna scan rate However the compensation adds a large amount of delay...

Страница 203: ...ended Setting the AGC Time Constant higher is unlikely to affect performance though it may degrade performance if vehicle dynamics cause relatively rapid changes in received signal strength The AM Ban...

Страница 204: ...ominal data 0 Makes no use of adjacent symbols for error correction Trellis Detection Uses the phase tree for data detection Uses adjacent symbols to help decide on iffy bits Improves BER performance...

Страница 205: ...decisions about each individual bit This process improves BER performance by about 3 5 to 5 dB over conventional FM detection However this assumes that the transmitter is really following the known an...

Страница 206: ...to lose lock Enabling the PNC mode opens the tracking loop bandwidth to accommodate for these issues This increase in bandwidth does have a tradeoff A wider tracking range allows the RDMS to deal with...

Страница 207: ...help determine when to use PNC If your transmitter was manufactured by these companies PNC should be Off Quasonix guaranteed Nova Engineering highly likely L3 probably but digital transmitters only If...

Страница 208: ...alyzers can generate PCM frames using external user data or internal test patterns for the frame payload Within the Receiver Analyzer this functionality is referred to as the PCM Framer This note desc...

Страница 209: ...late that the sync pattern may appear relative to other detected sync patterns and still be detected CORR_THRESH Number of bits of the sync pattern that must match to declare sync detect LOCK_THRESH N...

Страница 210: ...es the I Video A or the Q Video B outputs on the 1U rack mount receiver refer to section 11 3 for 3U connectors Connectors are listed in Table 14 and locations are illustrated in Figure 6 Table 14 1U...

Страница 211: ...output In both cases the x x MHz is in the range of 0 075 to 20 0 MHz Frequencies outside of that range result in unpredictable behavior Example To configure Q Video B out for 5 1 MHz center frequenc...

Страница 212: ...eo A Channel 1 J3 Q Video B Channel 1 J8 Video C Channel 1 J13 Video D Channel 1 J18 I Video A Channel 2 J28 Q Video B Channel 2 J33 Video C Channel 2 J38 Video D Channel 2 J43 I Video A Channel Combi...

Страница 213: ...or email support quasonix com When calling technical support it will speed things up if you have the following information handy Model number Note that this is different from the customer part number...

Страница 214: ...Factory Reset Values Parameter Reset State Parameter Reset State Bit Rate 1 Phase Noise Compensation Off Combiner if available Off Muting Timeout 1000 Clock Polarity Normal Output Muting Off Data Pola...

Страница 215: ...A Clock Polarity Normal Data Polarity Normal Derandomizer Disabled Differential Decoder Enabled IF Filter Auto Downconvert Antenna Disabled AGC Zero Mode Manual Convolutional Decoder N A Lock Output...

Страница 216: ...ng N A Clock Polarity Normal Data Polarity Normal Derandomizer Disabled Differential Decoder N A IF Filter Auto Downconvert Antenna Disabled AGC Zero Mode Manual Convolutional Decoder N A Lock Output...

Страница 217: ...Clock Polarity Normal Data Polarity Normal Derandomizer Disabled Differential Decoder N A IF Filter Auto Downconvert Antenna Disabled AGC Zero Mode Manual Convolutional Decoder Disabled Lock Output Po...

Страница 218: ...Table 20 Table 20 Reference Documents Document Name Document Number Quasonix 3rd Generation Rack Mount RDMSTM Telemetry Receiver Installation and Operation Manual this document N A NetAcquire Telemetr...

Страница 219: ...NOT enabled when using TMoIP Table 21 3U Rack Mount RDMS TMoIP Ports Port Name Purpose Port Type Connector RDMS Control Browser control network interface Ethernet RJ 45 J80 TMOIP Data stream out Ethe...

Страница 220: ...ver Addressing window displays Figure 314 type the correct IP address in the Receiver IP Address field then click on the OK button The IP address requested is located on the front panel Main Menu Syst...

Страница 221: ...S Network Monitor Configure Presets and About screens are described in section 4 5 of this manual The TMoIP functionality is accessed via the TMoIP tab as shown in Figure 316 Detailed information abou...

Страница 222: ...to the row of the desired Local TMoIP Channel then clicking on the Local Endpoint field as shown in Figure 318 Associated configuration and control information displays in the right side pane Figure...

Страница 223: ...MS 203 Quasonix Inc Figure 319 TMoIP Network Screen 14 4 3 TMoIP Serial I O Screen The TMoIP Serial I O screen shown in Figure 320 updates status and configures serial input channels for TMoIP Figure...

Страница 224: ...tries Figure 321 TMoIP Log Screen 14 4 5 TMoIP System Screen The TMoIP System screen is shown in Figure 322 It provides links to a variety of configuration and status screens The default view contains...

Страница 225: ...reen shown in Figure 323 provides NetAcquire server status information such as host resources network interface and server task status Figure 323 TMoIP About Window Detailed information about each TMo...

Страница 226: ...ecovery Mode to allow the user an opportunity to restore the unit to normal operation This system is installed during an SD Card Update but is not modified by any other type of update thereby ensuring...

Страница 227: ...st straightforward method to recover operation is by attempting to boot an existing version that is stored on the RDMS In order to provide redundancy the RDMS retains up to two versions of firmware on...

Страница 228: ...utes if no errors are encountered The browser interface or the front panel may be used to track the progress of the reboot and update If additional problems occur the RDMS returns to Recovery Mode aft...

Страница 229: ...his method uses a firmware update file provided by Quasonix in conjunction with the Browser Interface Instructions for how to perform this type of update are included with the update file The Update P...

Страница 230: ...ertificate Store The instructions for this vary by browser and are presented below 16 1 Firefox When using the Firefox browser in Windows the certificate must be imported through the Settings menu 1 C...

Страница 231: ...ned from Quasonix then click on the Open button 7 The Downloading Certificate window displays as shown in Figure 332 Figure 332 Firefox Downloading Certificate Window 8 Click on the View button to exa...

Страница 232: ...DMS 212 Quasonix Inc Figure 333 Firefox Certificate Viewer Quasonix Root CA 10 Scroll through the Certificate Names in the Authorities tab of the Certificate Manager to ensure Quasonix Inc is in the l...

Страница 233: ...Internet Explorer and Chrome To add a certificate to Edge Internet Explorer and Chrome use the Windows Certificate Browser tool After a certificate has been added to the system it is available for use...

Страница 234: ...Mount RDMS 214 Quasonix Inc Figure 335 Internet Properties Content Tab 3 Click on the Certificates button The Certificates screen displays Click on the Trusted Root Certification Authorities tab as s...

Страница 235: ...n Rack Mount RDMS 215 Quasonix Inc Figure 336 Certificates Screen 4 Click on the Import button to start the Certificate Import Wizard The Wizard is shown in Figure 337 Figure 337 Windows Certificate I...

Страница 236: ...le obtained from Quasonix Click on the Next button Figure 338 Windows Certificate Import Wizard Browse 7 Select Place all certificates in the following store 8 Click on the Browse button then select T...

Страница 237: ...Import Wizard Choose Certificate Store 9 Click on the Finish button A message displays The import was successful Click on the OK button 10 View the list of Certificates under Trusted Root Certificatio...

Страница 238: ...neration Rack Mount RDMS 218 Quasonix Inc Figure 340 Certificates Quasonix Certificate Imported 11 Using Edge Internet Explorer or Chrome browse to https RDMS_IP where RDMS_IP is the IP address of the...

Страница 239: ...r can support bidirectional data from a single piece of hardware The following diagrams describe the differences between a standard three channel 3U RDMS receiver the same receiver with the EN option...

Страница 240: ...ration RDMS 3U Three Channel Transceiver with the EN Option The receiver s browser based graphical user interface GUI and the 3U front panel provide RDMS and EVTM configuration control and status 17 2...

Страница 241: ...Table 22 3U Rack Mount RDMS EVTM Ports Port Name Purpose Port Type Connector EVTM Tx Ethernet Via Telemetry Transmitter Output N connector J73 EVTM Data Ethernet via Telemetry Data Ethernet RJ 45 T568...

Страница 242: ...the top of the screen shown in Figure 346 with six selections that display a variety of parameters for each available channel The Browser Interface defaults to the Network screen The RDMS Network Moni...

Страница 243: ...r Browser Interface changes click on the Send Settings button to save the new frequency This may be done after all of the parameters are set Figure 348 EVTM Embedded Transmitter Settings Frequency Sel...

Страница 244: ...2 Figure 351 EVTM Embedded Transmitter Settings Randomizer Drop Down Menu Figure 352 EVTM Embedded Transmitter Settings LDPC Drop Down Menu A power value between 0 0 and 31 5 may be typed into the Pow...

Страница 245: ...Off and the EVTM transmitter output is On an X displays in a yellow circle as shown in Figure 356 Figure 356 EVTM Status Icon Yellow X Actual RF Off EVTM Transmitter Output On When the actual RF stat...

Страница 246: ...for controlling the embedded transmitter RF Tx Frequency Tx Mode EN Bitrate Randomizer LDPC VP Figure 359 EVTM Menu RF Select the RF option as shown in Figure 360 The user may toggle between RF On or...

Страница 247: ...n Figure 361 Any valid frequency may be entered in MHz then press the Enter key on the front panel keypad Figure 361 EVTM Embedded Transmitter Tx Frequency Selection Tx Mode Scroll to the Tx Mode opti...

Страница 248: ...Select the LDPC Low Density Parity Check option The user may toggle between LDPC On or Off by pressing the Enter key on the front panel keypad until the desired value displays Press the Esc key on th...

Страница 249: ...VTM Transmitter Output On When the actual RF state is Off and the EVTM transmitter output is Off a red square displays as shown in Figure 366 Figure 366 EVTM Status Red Square Actual RF Off EVTM Trans...

Страница 250: ...Shift Keying CCSDS Consultative Committee for Space Data Systems coding standard CD Compact Disk CPM Continuous Phase Modulation DB 9 D subminiature 9 pin Serial Connector DC Diversity Combiner DHCP D...

Страница 251: ...lator Synchronizer RF Radio Frequency RJ 45 Ethernet Connection Jack RM Rack Mount RS 232 Recommended Standard 232 Serial Communications SAW Sawtooth Wave SDI System Degradation Indication SNR Signal...

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