Comtech EF Data SDM-2020 Installation And Operation Manual Download | Manualshive

Page: 134 / 215

background image

SDM-2020 Satellite Demodulator

Data Interfaces

Rev.3

A–33

Figure A-12. HSSI Signal Flow

Terminal A “+” of the generator shall be positive with respect to terminal B “-” for a
binary 1 or ON state. The B “-” terminal of the generator shall be positive with respect to
the terminal A “+” terminal for a binary 0 or OFF state.

«
...
132
133
134
135
136
...
»

Summary of Contents for SDM-2020

Page 1: ...Part Number MN SDM2020D IOM Revision 3 SDM 2020 Satellite Demodulator Installation and Operation Manual...

Page 2: ...he USA Comtech EFData 2114 West 7th Street Tempe Arizona 85281 USA 480 333 2200 FAX 480 333 2161 SDM 2020 Satellite Demodulator Installation and Operation Manual Part Number MN SDM2020D IOM Revision 3...

Page 3: ...upport Department at service comtechefdata com Contact us via the web at www comtechefdata com To return a Comtech EFData product in warranty and out of warranty for repair or replacement 1 Request a...

Page 4: ...Performance 8PSK with Reed Solomon Coding 1 11 1 4 3 BER Performance 16QAM with Reed Solomon Coding 1 11 1 5 SDM 2020 Demodulator Envelope 1 15 CHAPTER 2 INSTALLATION 2 1 2 1 Unpacking 2 1 2 2 Instal...

Page 5: ...3 3 4 Common Equipment Faults Menu 3 28 3 3 4 Stored Faults Alarms Menus 3 31 3 3 4 1 Unavailable Seconds Fault 3 31 3 3 5 Utility Menus 3 33 3 3 5 1 Utility Demodulator Menu 3 35 3 3 5 2 Utility Inte...

Page 6: ...4 1 2 Connector Pinouts J4 A 17 A 3 4 2 Auxiliary J5 A 18 A 3 4 2 1 Connector Pinout J5 A 18 A 3 5 LVDS Interface Front Panel Menus A 19 A 3 6 LVDS Interface Remote Commands A 19 A 4 ASI RS 422 Asynch...

Page 7: ...rame Structures A 50 A 6 5 3 Buffer Clock Sources A 50 A 6 5 4 Buffer Clock Backup A 50 A 6 5 5 Buffer Centering A 51 A 6 5 6 General Receive Specifications A 51 A 6 6 Interface Loop Through A 52 A 6...

Page 8: ...Character B 4 B 3 Configuration Commands Responses B 5 B 3 1 Demodulator Configuration Commands B 5 B 4 Interface Status Commands Responses B 7 B 5 System Configuration Commands Responses B 8 B 6 Cinf...

Page 9: ...Faults Alarms Menu 3 30 Figure 3 11 Utility Demodulator Menu 3 34 Figure 3 12 Utility Interface Menu 3 36 Figure 3 12A Utility Interface Menu RS422 Data Interface 3 37 Figure 3 12B Utility Interface...

Page 10: ...iption 3 1 Table 3 2 LED Indicator Description Front Panel 3 3 Table 3 3 Rear Panel LED Indicator Description 3 3 Table 3 4 Initial Defaults 3 53 Table 3 5 C N N to C N and Eb N0 Conversion Chart 3 55...

Page 11: ...30 RX Data Rate 44 736 A 49 Table A 31 RX Data Rate 51 840 Mbit s A 49 Table A 32 General RX Specification A 51 Table A 33 G 703 Auxiliary Connector Pinout A 55 Table A 34 SMPTE 310M Specification Sum...

Page 12: ...2020 satellite demodulator This is a technical document intended for earth station engineers technicians and operators responsible for the operation and maintenance of the SDM 2020 Related Documents...

Page 13: ...etric conversions Recommended Standard Designations Recommended Standard RS Designations have been superseded by the new designation of the Electronic Industries Association EIA References to the old...

Page 14: ...elded from end to end ensuring a continuous ground shield The following information is applicable for the European Low Voltage Directive EN60950 HAR Type of power cord required for use in the European...

Page 15: ...other warranty is expressed or implied Comtech EFData specifically disclaims the implied warranties of merchantability and fitness for particular purpose Exclusive Remedies The remedies provided here...

Page 16: ...tor 1 1 Overview The SDM 2020 Figure 1 1 is a programmable variable rate satellite demodulator used for digital video and high speed data applications The demodulator supports open network modes compl...

Page 17: ...ng upon the modulation code rate and data interface Demodulation formats include QPSK 8PSK and 16QAM Operation is based upon the DVB standard Refer to Appendix B for detailed remote control operation...

Page 18: ...ature for immediate implementation of different options through the user interface keypad enabling on location upgrade of the operating feature set in the rack without removing a unit from the setup T...

Page 19: ...137 45 000 000 1 500 000 36 622 340 QPSK 3 4 2 073 529 45 000 000 1 500 000 32 553 191 QPSK 5 6 2 303 921 45 000 000 1 500 000 29 297 872 QPSK 7 8 2 419 117 45 000 000 1 500 000 27 902 735 8PSK 2 3 2...

Page 20: ...SDM 2020 Satellite Demodulator Introduction Rev 3 1 5 2 Data and symbol rates become effective January 1999...

Page 21: ...rs for Data Interface Modules Part Number Description PL 5805 RS422 Serial Parallel Data Interface PL 5806 3 RX only ECL HSSI Serial Data Interface PL 5807 ASI RS422 Asynchronous Serial Interface Seri...

Page 22: ...rate 30 Msym s add 0 4 dB Data Rate Symbol Rate 1 5 to 100 Mbit s in 1 bit s increments depending upon symbol rate and data interface see Table 1 1 Table 1 2 and Table 1 3 Equivalent Serial Data Rate...

Page 23: ...0W maximum Power Distribution System Type TN ONLY EN 60950 Paragraph 1 2 12 1 Note This equipment shall not be used with single phase 3 wire and PE Connection to Supply Pluggable equipment Type A EN 6...

Page 24: ...B Input Level Composite 5 dBm maximum additive white Gaussian noise AWGN Composite Desired Carrier Ratio 17 10 log 37 5 Msym s LNB Power Supply Output Through Selected Input Only Selection 1 Selection...

Page 25: ...Eb N0 Threshold None 3 0 to 16 0 dB RX IF Frequency 2047 Pattern Data Loopback Where applicable Scrambler On Off Test Mode RS Correction On Off DC On Off L Band only Min Current limit Max Current Lim...

Page 26: ...s 70 140 MHz Carrier Level vs Symbol Rate 70 60 50 40 30 20 10 0 0 1 1 10 100 Symbol Rate Msym s Carrier Level dBm 1 Input Unit Maximum Level Minimum Level ant_pwr2 xls Carrier Level vs Symbol Rate 80...

Page 27: ...8 6 4 6 9 1 4 2 8PSK Reed Solomon Coding Note For 8PSK 8 9 at symbol rates 30 Msym s add 0 4 dB Refer to Table 1 10 and Figure 1 6 Table 1 11 8 PSK Reed SolomonCoding Eb No with Reed Solomon BER 2 3 5...

Page 28: ...or Introduction Rev 3 1 13 Figure 1 5 QPSK 1 2 2 3 3 4 5 6 7 8 Rates with Reed Solomon 10 4 10 5 10 6 10 7 10 9 10 8 10 10 3 0 4 0 5 0 6 0 7 0 8 0 9 0 10 0 11 0 1 2 Rate Specification 2 3 Rate 5 6 Rat...

Page 29: ...ulator 1 14 Rev 3 10 4 10 3 10 5 10 6 BER 10 7 10 9 10 8 10 10 3 0 4 0 5 0 6 0 Eb N0 dB 7 0 8 0 9 0 10 0 11 0 10 2 Specification 2 3 Rate 5 6 Rate 8 9 Rate 30 Msym s 8 9 Rate 30 Msym s Figure 1 6 8PSK...

Page 30: ...SDM 2020 Satellite Demodulator Introduction Rev 3 1 15 Figure 1 7 16QAM 3 4 7 8 Reed Solomon Decoder...

Page 31: ...0 Demodulator Envelope Refer to Figure 1 8 for unit envelope Note All dimensions are in inches metrics are referenced in parentheses 1 75 4 45 19 0 48 26 1 25 3 18 14 0 35 56 14 0 35 56 16 1 40 94 old...

Page 32: ...SDM 2020 Satellite Demodulator Introduction Rev 3 1 17 This page is intentionally left blank...

Page 33: ...hipping protection CAUTION Do not use any cutting tool that will extend more than 1 inch 2 54 cm into the container This can cause damage to the demodulator To remove the demodulator 1 Cut the tape at...

Page 34: ...fer to Section 2 2 1 for information on removing and installing data interface modules Install the demodulator Figure 2 1 as follows 1 Mount the demodulator chassis in the assigned position of the equ...

Page 35: ...SDM 2020 Satellite Demodulator Installation Rev 3 2 3 Figure 2 1 Typical Rack Installation...

Page 36: ...ng a data interface The data interface is a removable plug in module that provides a terrestrial connection to the demodulator An interface consists of a Printed Circuit Board PCB attached to a facepl...

Page 37: ...rface by the faceplate handle 4 Carefully pull the data interface out of the slot 2 2 1 2 Data Interface Installation 1 Disconnect power from the demodulator 2 Grasp the data interface by the faceplat...

Page 38: ...n data interface are described in Appendix A GROUND PRIME POWER J3 DATA INTERFACE LNB POWER LED J1 REMOTE J2 FAULT J21 MONITOR J23 RX IF INPUT NOTE FIGURE IS SHOWN WITH ECL HSSI DATA INTERFACE Figure...

Page 39: ...le only for L Band 2 The 4 channel input IF is only available for L Band 2 3 1 Connector Pinout Definitions Pinout TYPE is defined to described signal direction for each pin The signal direction is re...

Page 40: ...provides EIA 232 EIA 485 2 wire and EIA 485 4 wire operation The communications protocol and the control and status commands are described in Appendix B Table 2 2 provides the pinout of the J1 connec...

Page 41: ...the FORM C contacts in parallel Table 2 3 provides the pinout of the J2 connector This table also shows which pins are connected when a fault or alarm condition occurs It also states which pins are co...

Page 42: ...ge proportional to AGC 2V demodulator is locked and the voltage is a measure of the eye opening DEMOD I DEMOD Q These are I and Q test points They are sub sampled so that a useful constellation diagra...

Page 43: ...control 2 3 6 AC Power CAUTION This unit shall be operated from the type of power source indicated on the marking label If power source is unknown contact the local power company Damage to the unit m...

Page 44: ...er to Input Power requirements as specified in Chapter 1 1 6 2 3 8 DC Power Optional DC power is an available option Contact EFData Customer Support for further assistance 2 3 9 Ground GND or Earth A...

Page 45: ...me consists of 1 sync byte 047 hex and 187 bytes of data after the Reed Solomon check bytes 16 bytes are removed 204 The demodulator receives a 204 satellite frame consisting of 1 sync byte 047 plus 1...

Page 46: ...CEIVE RECEIVE POWER ON ENTER CLEAR CARRIER DETECT TEST MODE SYNC STORED ADAPTIVE BROADBAND Figure 3 1 Front Panel The front panel features include 6 button keypad for local control 7 LEDs to provide o...

Page 47: ...shes when the demodulator is in a test configuration The test mode status can be identified in the utility system menu in Figure 3 13 At system level a fault simultaneously activates the demodulator f...

Page 48: ...returns the display to the previous selection Left and Right Diamond Keys These keys are used to move to the next selection or to move the cursor for certain functions Note Throughout this chapter an...

Page 49: ...t To access this base menu level press either or From the Function Select menu use or to select one of the functional categories Configuration Monitor Faults Alarms Stored Faults Alarms Utility When t...

Page 50: ...TILITY DEMODULATOR Figure 3 11 UTILITY INTERFACE Figure 3 12 UTILITY SYSTEM Figure 3 13 UTILITY DEMOD OPTIONS Figure 3 14 UTILITY FACTORY SETUP Figure 3 15 CONFIGURATION SAVE Figure 3 6 ACCESS TO SUBM...

Page 51: ...Save Recall Enter the selected configuration menu by pressing ENTER Press or to view the selected configuration parameters To change a configuration parameter press ENTER to begin the change process P...

Page 52: ...8 8PSK 2 3 5 6 8 9 16QAM 3 4 7 8 1 sym s steps limited by code rate and interface RX IF FREQUENCY 950 to 1750 MHz in 2 5 kHz steps L Band only RX IF FREQUENCY 50 to 180 MHz in 2 5 kHz steps Non L Band...

Page 53: ...ENCY 50 to 180 MHz in 2 5 kHz steps Non L Band only ENERGY DISPERSAL ON OFF RS DECODER CORR ON CORR OFF Eb No THRESHOLD NONE 1 0 E x where x 3 to 8 Code Rate QPSK 1 2 QPSK 3 4 QPSK 7 8 QPSK 5 6 QPSK 2...

Page 54: ...r the data rate if programming from the symbol rate RX SR menu a If data rate is programmed the symbol rate menu is updated to reflect the code rate and framing selections b If symbol rate is programm...

Page 55: ...ion OFF or ON On entry the current status of the Reed Solomon decoder is displayed Press or to select CORR OFF or CORR ON Press ENTER to execute the change CORRECTION OFF MODE This mode turns off the...

Page 56: ...equency is within the RX IF frequency sweep range On entry the current sweep frequency is displayed with a flashing cursor Press or to move the flashing cursor Press or to increment the digit at the f...

Page 57: ...SDM 2020 Satellite Demodulator Operation Rev 3 3 13 This page is intentionally left blank...

Page 58: ...erface installed EXT REF FREQ Multiples of 8 KHz Available with G 703 Interface TX TERR CLK FREQ Frequency 1544 kbit s 2048 kbit s 6312 kbit s 8448 kbit s 32064 kbit s 34368 kbit s 44736 kbit s 51840...

Page 59: ...the current RX Data Fault that is being monitored is displayed Press or to make the selection Press ENTER to execute the change Note Detection of these conditions produces an alarm indication not a f...

Page 60: ...the TX CODING is displayed Press or to change the format Press ENTER to execute the change BUFFER CLOCK Programs the interface buffer output clock to one of the following modes RX Satellite Sets the o...

Page 61: ...tion Save Menu 3 3 1 3 Configuration Save Menu Refer to Figure 3 6 The Configuration Save menu allows the user to program configuration parameters into memory on the M C There are 10 memory locations...

Page 62: ...o 10 ACCESS TO SUBMENU CONDITIONAL OR OPTION DEPENDENT Parameter Information Key Figure 3 7 Configuration Recall Menu 3 3 1 4 Configuration Recall Menu Refer to Figure 3 7 The Configuration Recall men...

Page 63: ...3 A reversed contrast indicates an active alarm ACCESS TO SUBMENU CONDITIONAL OR OPTION DEPENDENT Parameter Information Key RECEIVE LEVEL 38 3 to 70 0 dBm 9 26 to 63 2 dBm RF Card dependent SWEEP FREQ...

Page 64: ...input connector Current RX level 35 0 to 70 0 dBm For 4 input connector Current RX level 9 26 to 63 2 dBm SWEEP FREQUENCY Displays the current sweep frequency Range 0 to 1 000 000 Hz 500 000 to 500 0...

Page 65: ...SDM 2020 Satellite Demodulator Operation Rev 3 3 21 This page is intentionally left blank...

Page 66: ...y in real time Fault status is displayed as a plus or minus for each parameter monitored indicates that no fault or alarm exists indicates that a fault exists and will cause switching in a redundant s...

Page 67: ...PLL FIFO INTERFACE MODULE 2047 LOCK BUFFER CLK ACT BUFFER UNDERFLOW BUFFER OVERFLOW BUFFER FULL VIDEO FRAME SYNC BATTERY CLOCK 12 VOLT SUPPLY 12 VOLT SUPPLY 5 VOLT SUPPLY CONTROLLER LNB ACCESS TO SUB...

Page 68: ...s faulted This is considered a major fault Return the demodulator for repair I CHANNEL Activity fault for the I channel digital filter This is considered a major fault An fault in this position indica...

Page 69: ...ndicate that the demodulator maximum data rate was exceeded Refer to Tables 1 1 1 2 and 1 3 to analyze and reprogram the data rate If this fault appears with other faults the combination of faults sho...

Page 70: ...d Loop is at the wrong frequency or will not lock Return the Interface card for repair FIFO see Note This fault indicates a data under run over run condition on the interface card INTERFACE MODULE Int...

Page 71: ...46 to verify the proper 12V monitor voltage If this voltage is not at the proper level this would indicate the power supply is faulted Return demodulator for repair 12 VOLT SUPPLY 12V power supply fau...

Page 72: ...Operation SDM 2020 Satellite Demodulator 3 28 Rev 3 This page is intentionally left blank...

Page 73: ...SS MM DD YY FAULT LABEL FRAME SYNC DATA STABLE AIS CLOCK PLL FIFO INTERFACE MODULE 2047 LOCK BUFFER CLK ACT BUFFER UNDERFLOW BUFFER OVERFLOW BUFFER FULL VIDEO FRAME SYNC STORED TIME DATE HH MM SS MM D...

Page 74: ...he fault groups and the CLEAR Stored Faults selections The time and date of the first stored fault status Flt0 for the selected group will be displayed alternately on line 2 of the display Press or to...

Page 75: ...SDM 2020 Satellite Demodulator Operation Rev 3 3 31 This page is intentionally left blank...

Page 76: ...ry Setup Factory Use Only After entering the Utility functions level press or to select the desired Utility menu and press ENTER Press or to select the utility function of interest Notes 1 The Utility...

Page 77: ...r Operation Rev 3 3 33 SDM 2020 DEMOD VER X X X FUNCTION SELECT UTILITY UTILITY DEMODULATOR ACCESS TO SUBMENU CONDITIONAL OR OPTION DEPENDENT Parameter Information Key DEMODULATOR TYPE DVB DBS Figure...

Page 78: ...gure 3 11 DEMODULATOR TYPE Programs the demodulator to DVB or DBS framing mode DVB Sync pulse is one byte wide DBS 204 framing and Serial mode operation sync pulse is one bit clock wide Upon entry the...

Page 79: ...2020 DEMOD VER X X X FUNCTION SELECT UTILITY UTILITY INTERFACE INTERFACE TYPE RS422 LVDS ASI RS422 ASI LVDS ECL_RX G 703 SMPTE_310M NONE UNKNOWN ACCESS TO SUBMENU CONDITIONAL OR OPTION DEPENDENT Param...

Page 80: ...ITY UTILITY INTERFACE RS422 ACCESS TO SUBMENU CONDITIONAL OR OPTION DEPENDENT Parameter Information Key RS422 INT SELECT DVB 530 INTF MODE SELECT SERIAL PARALLEL Only displayed with DVB selected DM ST...

Page 81: ...LVDS SDM 2020 DEMOD VER X X X FUNCTION SELECT UTILITY UTILITY INTERFACE ASI RS422 ACCESS TO SUBMENU CONDITIONAL OR OPTION DEPENDENT Parameter Information Key INTERFACE SELECT ASI RS422 RX INTF FIRMWAR...

Page 82: ...ESS CLEAR TO EXIT DATE MENU LVDS STATUS J7 RX LVDS TX LVDS Jumper Setting Dependent Figure 3 12D Utility Interface ASI LVDS SDM 2020 DEMOD VER X X X FUNCTION SELECT UTILITY UTILITY INTERFACE ECL_HSSI...

Page 83: ...NU CONDITIONAL OR OPTION DEPENDENT Parameter Information Key NONE G 704 2048 6312 G 743 G 747 NONE G 704 8448 G 742 G 745 NONE G 704 32064 G 752 NONE 34368 G 751 G 753 NONE 44736 MM DD YYYY PRESS CLEA...

Page 84: ...Y UTILITY INTERFACE SMPTE_310M RX INTF FIRMWARE FW NNNNRR ACCESS TO SUBMENU CONDITIONAL OR OPTION DEPENDENT Parameter Information Key MM DD YYYY PRESS CLEAR TO EXIT DATE MENU TX INTF FIRMWARE FW NNNNR...

Page 85: ...G 703 SMPTE 310M NONE UNKNOWN Note This is a status window only and no changes can be made from this menu Refer to Appendix A for information about the front panel menus for specific interface types...

Page 86: ...to change the selection Press ENTER to execute the change DM STATE Displays the current DM STATE either NORMAL or INVERT Upon entry the current status is displayed Press or to change the selection Pre...

Page 87: ...isplayed Press or to change the selection Press ENTER to execute the change RR STATE Displays the current RR State either NORMAL or INVERT in an RS 422 Select only Upon entry the current status is dis...

Page 88: ...G 751 G 753 44736 None G 752 51840 None STS 1 RX INTF FIRMWARE FW NNNNRR Pressing ENTER will show the FW release date Pressing CLEAR will exit the date menu 3 3 5 2 7 Utility Interface SMPTE 310M Ref...

Page 89: ...OR OPTION DEPENDENT Parameter Information Key DISPLAY CONTRAST 0 to 100 TEST MODE STATUS DEMOD FAULTS INTF FAULTS 2047 PATTERN RS CORR OFF INTF LOOPBACK REMOTE TYPE RS485 4 WIRE RS485 2 WIRE RS232 FP...

Page 90: ...ity The baud rate can be set at 300 600 1200 2400 4800 9600 or 19200 The parity can be set to EVEN ODD or NONE REMOTE ADDRESS The current demodulator address is displayed 1 to 255 To set the remote ad...

Page 91: ...a status window only MASTER RESET Master reset function CAUTION When a hard reset is initiated the demodulator hardware is reset and all default configuration settings will be installed When a soft r...

Page 92: ...Operation SDM 2020 Satellite Demodulator 3 48 Rev 3 This page is intentionally left blank...

Page 93: ...ION CONFIGURATION CODE MOD FUNCTIONAL x CURRENT VERSION x 1 to x Status Only OEM LCD or 8PSK or 16QAM or 2 L Band Inputs 0 or or 4 L Band Inputs 0 or or 70 140 MHz IF IN 0 or DISABLED EMULATION VERSIO...

Page 94: ...to the right of the option 2 If the option is not installed but is a FAST upgrade the minus symbol is displayed to the right of the option 3 If the option is not installed and not upgradable the 0 sy...

Page 95: ...NDENT Parameter Information Key UTILITY FACTORY SET UP Factory Setting Only Figure 3 15 Utility Factory Setup Menu 3 3 5 5 Utility Factory Setup Menu Refer to Figure 3 15 CAUTION This configuration is...

Page 96: ...k Phase see Note 1 Normal EXT REF Freq 1544 kHz see Note 2 RX Data Phase Normal TX TERR CLK Freq 44736 kbit s see Note 2 RX Data Fault None TX Coding Format AMI see Note 2 DVB Framing Type 188 Buffer...

Page 97: ...re G 752 RX INTF Firmware MM DD YYYY SMPTE 310M Interface Type RX INTF Firmware FW NNNNRR RX INTF Firmware MM DD YYYY TX INTF Firmware FW NNNNRR TX INTF Firmware MM DD YYYY Utility System Time 12 00AM...

Page 98: ...l when evaluating satellite links with a spectrum analyzer The following equations was used to build the conversion table C N Co No 10 Log 10 C N N 10 1 and Eb No C N 10 Log m CRv 10 Log 188 204 Modul...

Page 99: ...10 84 10 38 10 17 9 59 8 62 8 34 7 83 7 16 13 0 12 78 13 13 11 88 11 37 10 91 10 70 10 12 9 15 8 87 8 36 7 69 13 5 13 30 13 66 12 41 11 90 11 44 11 23 10 65 9 68 9 40 8 89 8 22 14 0 13 82 14 18 12 93...

Page 100: ...N ALL Module ON ON ON ALL Configuration ON ON ON ALL RX Interface Frame SYNC ON ON ON OFF ALL Data Stable AIS ON ON OFF ALL Clock PLL ON ON ON ALL FIFO ON ON ALL Interface Module ON ON ON ALL Buffer O...

Page 101: ...interface changes 1 2 1 D Support for new PC AS 5746C 2 2 1 E User interface changes 2 2 2 F Correct interface ID recognition 2 2 3 G Added Eb N0 Alarm Thresh Alarm 2 2 4 H Added SMPTE 310M interface...

Page 102: ...ated into the data interface The location for the information on each interface is as follow Paragraph No Title A 1 Description A 2 RS 422 Parallel Serial Interface A 3 LVDS Low Voltage Differential S...

Page 103: ...ng the Demodulator always disconnect the power before removing or installing a data interface A 1 2 Transmit Receive Data The data format for the transmit TX and receive RX data interfaces are the sam...

Page 104: ...1 Byte Sync 187 Bytes Payload SYNC DATA DVALID CLOCK SYNC 1 SYNC 1 187 1 16 16 RS Bytes Figure A 1 204 Byte Parallel Format 0 1 0 0 1 0 1 1 8 Bits Sync 1496 Bits Payload SYNC DATA DVALID CLOCK 0 1 0...

Page 105: ...SYNC SYNC timing depends upon the selection made for DVB FRAMING TYPE in the Configuration Interface menu refer to Figure 3 5 DVB Framing Type SYNC 188 or 204 The SYNC timing is derived from either t...

Page 106: ...Terminating Equipment A 2 2 Description The RS 422 interface has two data connectors and an auxiliary connector supporting various operating modes J3 Parallel Serial DVB Connector 25 pin D female Par...

Page 107: ...rallel Data Framing Formats 188 204 byte packets per ETS 300 421 and None Connectors 25 pin female D for serial data EIA 530 PIN Out 25 pin female D for parallel or serial data DVB PIN Out 9 pin femal...

Page 108: ...nterfaces Rev 3 A 7 DVB CONFIGURATION FACTORY SETTING J3 DVB PARALLEL SERIAL J4 EIA 530 SERIAL J5 AUX J3 2 15 GND NOTE JUMPER SELECTS FOR PINS 2 15 OF THE J3 DVB PARALLEL SERIAL REAR PANEL CONNECTOR F...

Page 109: ...mats is extracted and converted to one of the three modes of operation A 2 4 1 1 Connector Pinout J3 Parallel Serial DVB The connector is a sub miniature 25 pin female D connector with threaded jack n...

Page 110: ...O Mod Demod 15 System GND REFCLKA O GND Mod Demod Jumper selectable SCT for Modulator 16 Data 7 B MSB Serial I O Mod Demod 17 Data 6 B I O Mod Demod 18 Data 5 B I O Mod Demod 19 Data 4 B I O Mod Demo...

Page 111: ...e Data RD A BB A O Demodulator 4 Request To Send RS A CA A I Modulator 5 Clear To Send CS A CB A O Modulator 6 DCE Ready DM A CC A O Demodulator 7 Signal Ground AB GND 8 Receive Line Signal Detect RR...

Page 112: ...als are open collector where Voh 12V max And Vol 0 5V max Iol 8 ma A pull up resistor external to the equipment is required The fault signals MF and DF operate as follows A fault is indicated by an OF...

Page 113: ...interface module is installed the Utility Interface menu display commands specific to that interface The RS 422 specific commands are depicted in Chapter 3 Utility Interface menu A 2 6 RS 422 Interfa...

Page 114: ...2 Description The LVDS interface has dedicated transmit and receive connectors and an auxiliary connector The Receive Out connector is used with the demodulator while the Transmit In connector is used...

Page 115: ...it has a larger diameter and requires the selection of an appropriate connector shell The typical cable length for the serial parallel interfaces is 5 meters 16 405 feet The interface operates to the...

Page 116: ...below In a demodulator the LVDS interface J3 only has provision for DVB Configuration and the Master Clock Input is not used See jumpers J2 and J7 J3 RECEIVE OUT J4 TRANSMIT IN J5 AUX DEMODULATOR DVB...

Page 117: ...r removes the 16 Reed Solomon bytes and the sync byte and returns the data to the terrestrial circuit Figure A 1 and depict the 204 byte packetization for byte parallel and byte serial formats at J3 a...

Page 118: ...Connector Pinouts J4 Note Table A 9 is included for reference only The provided data pertains to the SDM 2020 Satellite Modulator The connector is sub miniature 25 pin D female with threaded jack nut...

Page 119: ...Mod Demod Jumper selectable SCT output for Modulator 16 Data 7 B MSB Serial I Mod 17 Data 6 B I Mod 18 Data 5 B I Mod 19 Data 4 B I Mod 20 Data 3 B I Mod 21 Data 2 B I Mod 22 Data 1 B I Mod 23 Data 0...

Page 120: ...Fault Redundancy switch application 3 Send Timing ST A O Modulator SCT for terrestrial synchronization 4 N C 5 Not Used 6 Modulator Fault Indicator MF O Modulator Summary Fault Redundancy switch appli...

Page 121: ...Data Interfaces SDM 2020 Satellite Demodulator A 20 Rev 3 This page is intentionally left blank...

Page 122: ...r chassis It provides physical and electrical connection between the external terrestrial circuit and the internal circuitry of the modulator or demodulator The plug in interface has full duplex capab...

Page 123: ...ELECTION SD TT ST RS CS RR RD RT J6 J5 J7 ASI GENERATOR LOOPBACK LEVEL TRANSLATORS M C MODULATOR DEMODULATOR INTERFACE TERRESTRIAL INTERFACE TX ASI RX ASI BNC F BNC F DC POWER DM EIA Figure A 5 ASI RS...

Page 124: ...Unit power is turned off prior to removal or insertion of the data interface ASI Specifications Data Rate 1 5 to 100 Mbit s ASI Clock Rate Uncertainty Programmed data rate 100 ppm Transport Clock ASI...

Page 125: ...g paragraphs describe the electrical and physical properties of the ASI RS 422 data interface module A 4 3 1 Transmit Input Connectors J3 J4 BNC Female These two connectors accept TX data from the ter...

Page 126: ...ive Line Signal Detect RR A CF A O Demodulator 9 Receive Timing RT B DD B O Demodulator 10 Receive Line Signal Detect RR B CF B O Demodulator 11 Terminal Timing TT B DA B I Modulator 12 Send Timing ST...

Page 127: ...s When the ASI RS 422 interface is selected only the commands that apply to that specific interface ASI or RS 422 are displayed Refer to Chapter 3 Utility Interface menu A 4 5 ASI RS 422 Remote Interf...

Page 128: ...elevision sound and data services TM1449 Interfaces for CATV SMATV Headends and Similar Professional Equipment 10th Working Draft TIA EIA 612 Electrical Characteristics for an Interface at Data Signal...

Page 129: ...cols The demodulator modulator is compatible with TM1449 transfer of MPEG 2 data signals in the standardized transport layer format The demodulator modulator also supports DBS DBS PS 007 no framing 18...

Page 130: ...o framing information Figure A 7 shows the general packet arrangement from the receiver There is no sync so the SYNC signal is always logic 0 Since data is always present the data valid signal DVALID...

Page 131: ...A 7 187 Byte no framing Serial Format 0 1 0 0 1 0 1 1 0 1 0 0 1 0 1 1 8 Bits Sync 8 Bits Sync 1496 Bits Payload High High SYNC DATA DVALID CLOCK Figure A 8 188 Byte Serial Format 0 1 0 0 1 0 1 1 8 Bi...

Page 132: ...le TA 108 2 8 33 to DCE Mod Demod Terminal Timing TT 113 9 34 to DCE Modulator Loopback Circuit A LA 143 10 35 to DCE Mod Demod Send Data SD 103 11 36 to DCE Modulator Loopback Circuit B LB 144 12 37...

Page 133: ...613 High Speed Serial Interface for Data Terminal Equipment and Data Circuit Terminating Equipment specifications define the high speed serial port functionality The serial port will be referred to a...

Page 134: ...A 33 Figure A 12 HSSI Signal Flow Terminal A of the generator shall be positive with respect to terminal B for a binary 1 or ON state The B terminal of the generator shall be positive with respect to...

Page 135: ...ansmitter Synchronization Signal TX PSYNC Indicates the beginning of a transport packet by signaling the SYNC byte Active per defined format timing Transmitter Data Valid TX DVALID Indicates valid dat...

Page 136: ...ed shielded pairs The maximum cable length should be 3 ft 7 62 cm for the 70 Mbits s transfer rates A 5 4 5 Terrestrial Electrical Characteristics All signals are balanced differentially driven and re...

Page 137: ...CLOCK DATA SYNC DVALID Figure A 13 Nominal Interface Timing Use the timing diagram shown in Figure A 14 for the worst case interface timing specifications CLOCK DATA tsu th tw T SYNC DVALID Figure A 1...

Page 138: ...od T 10 666 nsec tw Clock pulse width 4 nsec tsu Setup time DATA DVALID or SYNC to CLOCK 3 nsec th Hold time CLOCK to DATA DVALID or SYNC invalid 3 nsec A 5 4 7 Terrestrial TX Clock Phase The ECL HSSI...

Page 139: ...ailable to the M C but no functional support is required Upon Modem power up the CA output is set UNAVAILABLE until all modem initialization has been completed and no faults are detected After complet...

Page 140: ...faces Rev 3 A 39 A 5 5 3 ECL HSSI Interface Front Panel Menus Refer to Chapter 3 Utility Interface menu A 5 5 4 ECL HSSI Interface Remote Control Commands Refer to Appendix B for a listing of ECL HSSI...

Page 141: ...Data Interfaces SDM 2020 Satellite Demodulator A 40 Rev 3 This page is intentionally left blank...

Page 142: ...ng Positive Zero Negative Justification ITU T G 747 Second Order Digital Multiplex Equipment Operating At 6312 kbit s And Multiplexing Three Tributaries At 2048 kbit s ITU T G 751 Digital Multiplex Eq...

Page 143: ...ectrical connection between terrestrial data equipment and the internal circuitry of the demodulator The interface is designed for full duplex capability and is automatically configured for simplex RX...

Page 144: ...5 J3 G 703 RECOVERY CLK AND DATA PROCESSING AND CONTROL EXT CLK 75 J6 RD OUT G 703 75 J4 G 703 DRIVER CLK AND DATA DC POWER MODULATOR DEMODULATOR INTERFACE M C LOOPBACK Figure A 15 G 703 Block Diagram...

Page 145: ...24 where applicable RX 2047 Pattern Correlation ON OFF programmable test mode with error rate reporting TX Data Interface Input Signal Characteristics Per ITU T G 703 Input Impedance 75 Connector Type...

Page 146: ...male Auxiliary Functions Port Signals DF demodulator fault open collector TTL output CD carrier detect TTL output Connector Type 9 pin sub D female Controlled Items Data Date Rate Line Coding Test Mod...

Page 147: ...Pulse Shape Rectangular per ITU T G 703 Figure 12 G 703 Jitter Characteristics Input Jitter Output Jitter Complies with ITU T G 824 and Table 1 G824 In accordance with ITU T G 824 and Figure 1 G 824...

Page 148: ...nput Jitter Output Jitter Complies with ITU T G 824 and Table 1 G824 In accordance with ITU T G 824 and Figure 1 G 824 A 6 4 4 Receive Data Rate 8 448 Mbit s Specifications Refer to Table A 27 for dat...

Page 149: ...ristics Input Jitter Output Jitter Complies with ITU T G 824 and Table 1 G 824 Complies with ITU T G 824 and Figure 1 G 824 A 6 4 6 Receive Data Rate 34 368 Mbit s Specifications Refer to Table A 29 f...

Page 150: ...utput Jitter Complies with ITU T G 824 and Table 1 G 824 Complies ITU T G 824 and Figure 1 G 824 A 6 4 8 Receive Data Rate 51 840 Mbit s Specifications Refer to Table A 31 for data rate specifications...

Page 151: ...me structures provided according to data rate 1544 kbit s None or G 704 2048 kbit s None or G 704 6312 kbit s None G 704 G 743 or G 747 8448 kbit s None G 704 G 742 or G 745 32064 kbit s None or G 752...

Page 152: ...that pattern with the results reported to the host unit AIS Data Fault Detection The unit provides AIS all 1 s or data fault all 1 s or 0 s detection on the incoming RX data stream RX AIS Assertion Th...

Page 153: ...th transmission of data over the satellite link Transparent to the user the following actions occur on the interface Recovered clock and data from the send data SD input is looped to the interface RX...

Page 154: ...de of operation When loopback mode is executed turned on send data SD at the input to the interface is routed to both the interface receive data RD output and the host modulator data input Send data S...

Page 155: ...cific signals not otherwise defined for either or both of the two data connectors Refer to Table A 33 The connector is a 9 pin sub miniature D female with threaded jack nuts Demodulator Fault DF is a...

Page 156: ...emodulator TTL output A 6 9 Environmental Requirements Temperature Range Operational Storage 0 to 50 C 32 to 122 F 40 to 70 C 40 to 158 F Humidity 0 to 95 Non Condensing Operational Shock MIL STD 167...

Page 157: ...Data Interfaces SDM 2020 Satellite Demodulator A 56 Rev 3 This page is intentionally left blank...

Page 158: ...d electrical connection between the external terrestrial circuit and the internal circuitry of the unit By convention a modem is Data Communications Equipment DCE where transmit data enters the data i...

Page 159: ...iliary MF DF CD J4 J3 SMPTE 310 Generator Loopback Level Translators M C Modulator Demodulator Interface Terrestrial Interface Tx Data 75 Ohm BNC F Rx Data 75 Ohm BNC F DC Power J5 RTS 96 Pin DIN Figu...

Page 160: ...310M Overshoot 10 maximum on both rising and falling edges per SPMTE 310M Receiver Sensitivity The receiver shall operate with up to 3 dB amplitude loss at 1 2 the interface clock Return Loss 30 dB mi...

Page 161: ...Up to 95 non condensing Physical Size SDM 2020 plug in module compatible Hot Pluggable Not required Unit power is turned off prior to removal or insertion of the data interface A 7 3 2 Interface Loop...

Page 162: ...rovide indicated Modulator Faults MF and Demodulator Faults DF For MF and DF a fault is indicated by an OFF Vout Hi open collector transistor and the normal OK state indicates an ON transistor Vout Lo...

Page 163: ...2 O Demodulator Summary Fault Open Collector Redundancy switch appplication 3 N C Request to Send RTS 4 I Modulator Request to send TX control TTL 5 N C Modulator Fault Indication MF 6 O Modulator Su...

Page 164: ...es Rev 3 A 63 A 7 5 SMPTE 310M SSI Interface Front Panel Menus Refer to Chapter 3 Utility Interface menu A 7 6 SMPTE 310M SSI Remote Interface Commands Refer to Appendix B for a listing of ASI and RS...

Page 165: ...Data Interfaces SDM 2020 Satellite Demodulator A 64 Rev 3 This page is intentionally left blank...

Page 166: ...terrestrial circuit and the internal circuitry of the unit By convention a modem is Digital Communications Equipment DCE where transmit data enters the data interface and receive data exits it The dat...

Page 167: ...4 LVDS Clk D0 D7 DValid Sync J7 ASI Generator Loopback 96 Pin DIN M C Interface Modulator Demodulator Interface Terrestrial Interface Tx ASI Rx ASI BNC F BNC F DC Power Aux MF DF Tx On Off Ext Clk Tx...

Page 168: ...s Data Framing Formats 188 204 byte packets per ETS 300 421 and None Hot Pluggable Not required Unit power is turned off before removal or insertion of the data interface ASI Specifications Data Rate...

Page 169: ...or LVDS Auxiliary Functions Transmitter Control TX IF Control ON OFF Polarity select Normal or Inverted Controlled Functions Interface Select ASI or LVDS Interface Loopback Interface Loop Thru Data R...

Page 170: ...tion See Figure A 21 A description of the jumpers and application data is as follows JP1 JP2 JP3 JP4 Jumper In ON Position J6 J7 J3 J4 J5 Jumper In OFF Position Figure A 21 ASI LVDS Jumper Selection J...

Page 171: ...as an input JP1 OFF Normal Setting Selects J6 as an output for Loopback or Loop Thru operation in conjunction with the ASI signals JP2 ON Normal Setting Selects pins 2 and 15 of J6 as GND JP3 Not Use...

Page 172: ...ged the TX ASI J3 input connects simultaneously to the RX ASI J7 and to the RX LVDS connector J6 The LVDS signal contains D0 D7 Sync Dvalid and Clock JP1 is On When Loopback is engaged the TX LVDS J6...

Page 173: ...tput I O of the interface is determined by a whether it is plugged into a modulator or demodulator and b Loopback or Loop Thru programming Table A 41 LVDS Connector Pinout J6 Signal Function Name Pin...

Page 174: ...n the modulator or demodulator when the open collector is OFF An ON collector indicates an OK status Ext Clk is an LVDS input Carrier Detect is a TTL output TX IF ON OFF is a single ended TTL input Ta...

Page 175: ...erface Defaults Default settings for the interface are listed in the following table Interface Defaults Interface Select ASI TX IF Control Off Data or Clock Normal Frame Format 188 Loss of Data Alarm...

Page 176: ...rred on the remote control communications link as US ASCII encoded character strings The remote communications link is operated in a half duplex mode Communications on the remote link are initiated by...

Page 177: ...s transmitted on the remote link This character flags the start of a message This character is for commands for responses B 2 2 Device Address The device address is the address of the one satellite de...

Page 178: ...parity error cr lf Error message for received parity errors add ER2_invalid parameter cr lf Error message for a recognized command which cannot be implemented or has parameters which are out of range...

Page 179: ...ration SDM 2020 Satellite Demodulator B 4 Rev 3 B 2 4 End Character Each message is ended with a single character which signals the end of the message cr Carriage return character for commands End bra...

Page 180: ...message will be generated if any other data rate is input for change Symbol Rate Assignment Command Response Status Response add ASR_nnnnn_mm mmmmmm cr add ASR_nnnnn_mm mmmmmm cr lf add ASR_ cr add A...

Page 181: ...e add SPL_nnnn cr add SPL_nnnn cr lf add SPL_ cr add SPL_nnnn cr lf Where nnnn 0 to 1000 mA in 1 mA steps Notes 1 The lower limit specified must be less than the current upper limit 2 This command app...

Page 182: ...data phasing Receive Data Fault Command Response Status Response add RDF_xxxx cr add RDF_xxxx cr lf add RDF_ cr add RDF_xxxx cr lf Where xxxx NONE DATA or AIS DVB Framing Type Command Response Status...

Page 183: ...demodulator will respond to any status request at any time However the demodulator must be in Remote Mode to change configuration parameters Clear Stored Faults Command Response add CLSF_ cr add CLSF_...

Page 184: ...age will be generated if any other data rate is input for change Demodulator Config Status Command Response add DCS_ cr add DCS_ cr DF_nnnn nnnn cr DR_nnnn_mmm mmmmmm cr DE_xxx cr SWR_nnnnnnn cr SR_xx...

Page 185: ...State Control RR State Control MC State Control External Reference Frequency TX Terrestrial Clock Frequency Interface Loopback Interface Coding Format Receive Buffer Clock Source Interface Buffer Siz...

Page 186: ...ture 8448 Interface Receive Frame Structure 32064 Interface Receive Frame Structure 34368 Interface Receive Frame Structure 44736 Interface Receive Frame Structure 51840 Notes 1 Only displayed when RS...

Page 187: ...derflow OK FLT Buffer Overflow OK FLT Selected Buffer Clock Activity OK FLT Buffer Full OK FLT Video Frame SYNC OK FLT Number of Stored Faults logged 0 to 10 Common Equipment Status Command Response a...

Page 188: ...ly returned if the error rate has exceeded the computational resolution of the system 2 No Data is returned if the error rate cannot be calculated 3 Sampling is returned if not enough data is currentl...

Page 189: ...ulate the Eb N0 Eb N0 Margin Status Command Response add EBNM_ cr add EBNM_xnn ndB cr lf Where x data modifier to indicate that the Eb N0 threshold is less than 0 nn n 16 0 to 16 0 EB NO threshold Not...

Page 190: ...nal resolution of the system 2 No Data is returned if the level cannot be calculated 3 Sampling is returned if not enough data is currently available to calculate the level LNB Current Monitor Status...

Page 191: ...nd Response add CSF_ cr add CSF_ hh mm ss MM DD YY cr M C_xxx cr BAT_xxx cr 12_xxx cr 12_xxx cr 5_xxx cr LNB_xxx cr lf Monitor Control Module OK FLT Battery Clock OK FLT 12V Power Supply OK FLT 12V Po...

Page 192: ...ceding sections Additional configuration status of new options and features will always be appended to the end Where pn is the last parameter returned Parameter Number Parameter Name Command Reference...

Page 193: ...d or use existing reserved bits Character a demodulator fault status character 1 Bit 6 1 always Bit 5 demodulator module fault Bit 4 Carrier detect status 0 for decoder lock Bit 3 through Bit 0 Binary...

Page 194: ...BCSF_ poll Equipment Type Command Response add ET_ cr add ET_tttttttt_xxx yyy zzz cr lf Where tttttttt Equipment type xxx yyy zzz Software version This command returns the equipment type and the soft...

Page 195: ...ber is not used dd willb e reported State of Product Command Response add SOP_ cr add SOP_ cr Product address add cr Data Format abc cr Baud Rate rrrrr bps cr Comm Type var string1 cr var sring2 cr lf...

Page 196: ...l sense or INV inverted sense This command controls the logic sense of the DM DCE ready signal RR State Control Command Response Status Response add RR_xxx cr add RR_xxx cr lf add RR_ cr add RR_xxx cr...

Page 197: ...ponse Status Response add RR_xxx cr add RR_xxx cr lf add RR_ cr add RR_xxx cr lf Where xxx NRM normal sense or INV inverted sense This command controls the logic sense of the RR receiver ready signal...

Page 198: ...0 to 32 milliseconds Buffer size in 2 ms steps Interface Coding Format Receive Command Response Status Response add ICFR_xxxx cr add ICFRR_xxxx cr If add ICFR_ cr add ICFR_xxxx cr If Where xxxx AMI HD...

Page 199: ...where n 0 AMI 1 B3ZS 2 HDB3 3 B8ZS p24 n where x 0 Off or 1 On p25 n where x 0 Off or 1 On p26 nnnnnn buffer size in milliseconds p27 nnnnn n external frequency in kHz p28 nnnnn external reference fre...

Page 200: ...RDVB_xxxx cr DF_nnnn nnnn cr DR_nnnn_mmm mmmmmm cr DE_xxx cr RCP_xxx cr RDP_xxxx cr RDF_xxxx cr SWR_nnnnnnnn cr SR_xxx cr RFIN_x cr Note 1 LNBV_xx cr lf Note 1 Interface Select DVB Framing Type Demodu...

Page 201: ...Rev 3 Where pn is the last parameter returned Parameter Number Parameter Name Command Reference Description 23 24 25 32 Interface Select ref ISEL_ command Interface Loopback ref ILB_ command Reserved...

Page 202: ...xxxxxx cr If Where xxxxxxxxxxxxxxxx 16 character string to be displayed on Line 1 of the modem LCD Program OEM String 2 see Notes 1 and 2 Command Response Status Response add OES2_xxxxxxxxxxxxxxxx cr...

Page 203: ...Remote Control Operation SDM 2020 Satellite Demodulator B 28 Rev 3 This page is intentionally left blank...

Page 204: ...able through the basic platform unit while others require that the unit be equipped with optional hardware or that the hardware be installed in the field The options available through the FAST archite...

Page 205: ...after confirmation by ADAP This accelerated upgrade can be accomplished only because of FAST s extensive use of programmable devices incorporating ADAP proprietary signal processing techniques These...

Page 206: ...to select Demodulator Options menu b Press ENTER c Scroll and select Demodulator options c Scroll through the Demodulator Options and check off all features that display a sign as follows OEM LCD 8PS...

Page 207: ...r Options menu e Press ENTER f Use and to select Configuration Code Demodulator menu g Press ENTER h Menu appears as follows AAAAAAAAAA AAAAAAAAAA i Enter the access code Use the following example Use...

Page 208: ...f Use and to scroll through features Visually check selected features for a sign If a sign is evident the upgrade is completed 8 If upgrade is incorrect the menu display will exhibit WRONG CODE ENTERE...

Page 209: ...Fast Option SDM 2020 Satellite Demodulator C 6 Rev 3 This page is intentionally left blank...

Page 210: ...mation Interchange ASI Asynchronous Serial Interface BB Baseband bit s bits per second C Celsius CLK Clock COM Common CS Clear to Send CTS Clear to Send CW Continuous Wave dB Decibels dBc Decibels ref...

Page 211: ...odulator MOP Modulated Output Power MSB Most Significant Bit n nano 10 9 N A Not Applicable NC No Connection or Normally Closed NO Normally Open p pico 10 12 PCB Printed Circuit Board PLL Phase Locked...

Page 212: ...SDM 2020 Satellite Demodulator Glossary Rev 2 g 3 W Watt...

Page 213: ...Glossary SDM 2020 Satellite Demodulator g 4 Rev 3 This page is intentionally left blank...

Page 214: ...ector Pinout J7 A 24 Connector Pinout Definitions 2 7 Configuration Status B 9 Data Interface Installation A 1 A 2 A 8 A 9 A 21 A 28 A 44 Data Interfaces 1 5 2 2 B 9 Demodulator Configuration Commands...

Page 215: ...0 Receive Output Connectors J5 J6 BNC Female A 25 Receive Transmit Data J3 J4 DB25 Female A 16 A 46 Remote Control Operation B 1 Remote Port and M C Specifications 1 9 Revision Emulation Operation 3 5...

Reviews:

No comments

Related manuals for SDM-2020

Brand: Citizen Pages: 16

TI-83 Plus Silver Edition

Brand: Texas Instruments Pages: 111

Brand: LEXIBOOK Pages: 14

Brand: LEXIBOOK Pages: 30

Brand: LEXIBOOK Pages: 45

Brand: ClearView Pages: 2

Brand: Casio Pages: 43

Brand: Pico Macom Pages: 2

Brand: unitrex Pages: 10

EL1801C - Semi-Desktop 2-Color Printing Calculator

Brand: Sharp Pages: 79

EL1611P - 12 Digit Hand Held Calculator AC/DC Power

Brand: Sharp Pages: 104

Brand: Canon Pages: 2

Brand: Canon Pages: 7

Brand: Canon Pages: 4

Brand: Canon Pages: 2

Brand: Canon Pages: 2

Brand: Canon Pages: 2

Brand: Canon Pages: 2

Brands by name

0 1 2 3 4 5 6 7 8 9 A B C D E F G H I J K L M N O P Q R S T U V W X Y Z

Popular brands

Load more brands