Technical Operations Manual VETA RECEIVER (VR)
Contents
1. Input Ports 2 Connectors BNC F Input Impedance 50 Ohms lt 1 5 1 VSWR Input Frequency 0 9 to 8 5 GHz In Bands Frequency Accuracy 10 ppm 8 2 COFDM IF INPUT Input Ports 2 Input Connector BNC F Input Impedance 75 Ohms lt 1 5 1 VSWR Input Frequency 0 174 to 849 MHz Frequency Accuracy 2 ppm Final IF Bandwidth 10 MHz 3dB LO Radiation lt 25 dBm DC Output 12V 500 mA External Down Converters optional Frequencies gt 845 MHz 8 3 DEMODULATION DVB T of Carriers 2 K DVB T Bandwidth 8 7 6 MHz DVB T Guard Interval 1 32 1 16 1 8 1 4 DVB T FEC 1 2 2 3 3 4 5 6 7 8 DVB T Modulation QPSK 16 QAM 64 QAM Optional VETA Narrow BW Modes VETA of Carriers 400 VETA Bandwidth 2 5 MHz or 1 25 MHz VETA Guard 1 16 1 8 VETA FEC 1 3 2 3 VETA Modulation QPSK 16QAM Threshold 6 7 amp 8 MHz BW QPSK 12 lt 95 dBm 16 QAM 72 lt 89 dBm 64 QAM Y lt 83dBm Optional Diversity can improve threshold by 2 5 dB VETA BW Threshold 100 dBm to 105dBm 8 4 VIDEO DECODING Compression Type MPEG 2 Field or Frame Encoding Selectable Auto Detect Desired Compression Standard ISO IEC 13818 2 with Intra Refresh update mode for low Latency operation Video format standards NTSC or PAL 100 M0087X2 24 of 31 www cobham com gms Profiles SPOML or MP ML Chroma Format 4 2 0 or 4 2 2 Line Standard 525 and 625 NTSC PAL Horizontal Resolution 704 528 480 352 pixels Veta Systems Latency2. Out 5 2 3 Video One composite video out 75 ohm impedance PAL NTSC standard is provided S Video output is also provided but is located on the multifunction J1 dB 15 F connector which is described under section 5 2 5 Table 4 Video Connector Connector Name Connector Type Comments BNC F 5 2 4 Audio A Lemo 5 pin connector is provided for audio output The output level is nominal line level with output impedance of 50 ohm Audio is single ended There are no audio gain adjustments Table 5 Audio Connections Connector Name Connector Type Comments Function Lemo 5 PIN F 1 NO Lemo 5 PIN F Lemo 5 PIN F Lemo 5 PIN F LEFT AUDIO Lemo 5 PIN F RIGHT AUDIO 100 M0087X2 16 of 31 www cobham com gms 5 2 5 J1 Multifunction DB 15 F Connector The multifunction DB 15 connector provides for DC power out received signal strength indicator A amp B S Video output and the necessary clocks data and grounds for the optional chaining interface an interface which allows multiple services to be sent via one RF link The DC power out is basically a loop through from the DC power in and should reflect the input DC level see section 5 2 6 It is used to provide power for optional equipment and setups S Video provides a step up in terms of video quality from composite video out as described in section 5 2 3 and be taken from pins 14 and 15 The remaining pins and their functions are described in the table be
3. a T RED A May TX BLK TRL e CTRL Rx BLK CTRL A 7 GND GRN gt GRN 8 DATA TX RED A 9 DATA RXx BLKk L GRN w RED we BLK DATA A GRN TOLERANCES ENG TECH Nathan M DWG TITLE UNLESS OTHERWISE SPECIFIED COBHAM DIMENSIONS ARE IN INCHES DRAWN R Manvelyan GMS Products CABLE VETA Rx PWR IN CONTROL USER DATA DO NOT SCALE DRAWING LINEAR ENG SIZE DATE DWG NO REV XX 0 5 PROD 03 10 2009 100 C0354X2 X XX 0 125 KA 000 fe fom NONE fo 31 of 31
4. product and any software firmware upgrades If fault persists call our support line and report the fault If fault persists and you are informed to return the product please obtain an RMA number from the GMS support department or website and ship the equipment with the RMA number displayed and a description of the fault Please email the support section the airway bill consignment number for tracking purposes Depending on the nature of the fault GMS endeavor to repair the equipment and return it to the customer within 14 days of the item arriving at our workshops Obviously it is impossible to cater for all types of faults and to manage 100 replacement part availability and delays are sometimes inevitable Please contact GMS for details of packages that can be tailored to meet your individual needs whether they are service availability technical training local geographic support or dedicated spares holdings 3 2 Safe Operating Procedures e Ensure that the power supply arrangements are adequate to meet the requirements of VETA product e Operate within the environmental limits specified for the product e Only authorized trained personnel should open the product There are no functions that required the User to gain access to the interior of the product 100 M0087X2 8 of 31 www cobham com gms 4 Getting Started The VR is pre configured by GMS prior to shipment based on customer requirements thus is ready to work rig
5. to the VETA Transmitter for proper RF lock and demodulation the other COFDM parameters are auto 100 M0087X2 10 of 31 www cobham com gms detected In general when troubleshooting a RF link the operator should make sure that the following RF parameters are matched at both the Transmitter and Receiver FF Parameters RF Freq MHz 14700 BandWidth Guard Interval OFOM Polarity Normal hl Figure 2 VR RF Essentials The initial checkout described above is simply to check the basic video operation of the VR unit For further details on the connectors monitoring and controlling the VR read thoroughly through this manual starting with section 5 hardware overview For a full explanation of the control software see Manual 100 M0131 100 M0087X2 11 of 31 www cobham com gms 5 Hardware Overview The VR versatile housing can be optionally mounted in a suitcase sit on a desktop or be configured to mount in a 19 inch instrumentation rack All interface connectors are located in the back of the unit The front consists of a standard push button panel LED indicators and a toggle power switch The front and back panels of the VR unit are illustrated in Figure 3 4 and 6 and discussed in detailed in this section eo 7 O RF 105 _ O 20 6 135 Hi 0307 ALARM O 40 8 i A d A a MODE RF CONFIG Figure 4 VR front panel 5 1 VR Front Panel The front button panel LED indicator
6. 0 M0087X2 4 of 31 www cobham com gms 1 Acronyms This section lists and describes the various acronyms used in this document 16QAM 16 state Quadrature Amplitude Modulation A V Audio Video AES Advanced Encryption System ABS Basic Encryption System 8 bit CSM Compact Surveillance Modem COFDM Coded Orthogonal Frequency Division Multiplexing CVBS Composite Video BDC Block Down Converter FEC Forward Error Correction GUI Graphical User Interface I O Input Output KBaud Kilobaud per second Kbps Kilobits per second Mbps Megabits per second MER Modulation Error Rate MPEG Moving Picture Experts Group NTSC National Television System Committee PAL Phase Alternation Line QAM Quadrature Amplitude Modulation OPSK Quadrature Phase Shift Keying RF Radio Frequency RX Receiver S N Signal to Noise Ratio THD Total Harmonic Distortion TX Transmitter UDP User Datagram Protocol VDC Volts Direct Current VDL VETA Digital Link VDR VETA Digital Repeater VMT VETA Miniature Transmitter VNA VETA Network Adapter VR VETA Receiver VT VETA Transmitter 100 M0087X2 5 of 31 www cobham com gms 2 Introduction GMS Very Efficient Transmission Apparatus VETA product line provides several key features that enable high quality and low latency wireless Audio Video A V transmission for the most demanding short or long d
7. 0087X2 18 of 31 www cobham com gms 5 3 Using External Down Converters Down converters have an LO local oscillator which is mixed with the DVB T transmitter frequency and it then converts it to the IF intermediate frequency The VR VETA receiver locks on to the IF frequency in order to be able to receive the COFDM signal The VR calculates the IF frequency based on the LO in MHz of the down converter as well as the DVB T transmitter frequency in MHz and whether the LO is using high or low side injection relative to the band of transmission These parameters must be entered into the GMS control software setup screens see Figure 7 and also refer to manual 100 M0131 regardless if the VR is configured with internal or external down converters However when the unit leaves the factory these parameters are pre configured when using internal down converters When using external down converters it is up to the user to enter these parameters If necessary contact the manufacturer of the BDC block down converter to find the LO if it s using high or low side injection and the gain of the unit Although the BDC gain setting is not needed for the operation of the system it is used in calculating of input levels displayed by OSD on screen display The OFDM polarity of normal or invert is usually selected based on the polarity of the transmitter The VR can source VDC through the IF IN B and IF IN A ports so t
8. 70 deg C 8 9 Optional LAN USB Interface 8 10 8 11 8 12 8 13 8 14 8 15 100 M0087X2 Refer to GMS VETA IP Network Adapter VNA Data Sheet This optional module provides 10 100 Base T LAN RJ 45 Interface that can be used for audio video user data streaming RS232 DATA OUTPUT Baud Rate Up to 115 k baud Connector p o J1 DB 9M CONTROL Local Control Front Panel with 16 channel mode select Preset key selection 1 16 REMOTE CONTROL RS232 Control from PC GUI All receiver options and functions are controlled via the remote interface LOCAL MONITORING Control Panel Signal Strength Bar Graph Channel amp Mode and Rx Lock invalid Encryption Key OSD Signal to Noise Ratio SNR Pre and Post FEC Bit Error Rate BER and Packet Errors REMOTE MONITORING All RX measurements and controls SECURITY OPTION ABS is standard The VR can optionally be provided with BCRYPT 128 or 256 for protecting the signal in sensitive applications 26 of 31 www cobham com gms Appendix A LED Indictors LED condition Meaning Action No Config LED s lit Unit is OFF power is off turn BDC s On Ensure that RF source is active and has correct frequency No RF Signal Lock Ensure that BDC s are turned on Ensure there is no interfering signal Ensure that Video is enabled Red Alarm Lit Has RF Signal Lock but at the Transmitter RF LED On no decoder Lock Ensure that scrambling keys matched Signal streng
9. RF IN A and RF IN B ports on the VETA Receiver and one on the SMA RF connector on the VMT Hard lined connection can be made instead make sure enough attenuation is present when performing a hard line checkout gt Attach the VMT breakout cable 780 C0449 or equivalent and apply 12VDC to the red pigtail and GND to the black pigtail Ensure power supply can supply at least 0 5A at 12VDC Attach a composite video source to the BNC video input cable that is located on the VMT breakout cable Note which VMT Configuration 1 through 16 is shown rotary switch or through control software this number must match the receiver Attach a video cable from BNC VID output port on the VR VETA Receiver to the composite Video input port of a video monitor Apply 12Vdc to the VR pins 1 2 12V and 3 4 ground to the J2 dB connector if using provided cable use the red 12V and black GND pigtails Power supply must be able to source 2 AMP at 12VDC Turn on the video source and video monitor equipment Turn on the VR with the PWR switch on the front panel up is ON The VR will output a blue screen to your video monitor when no video is present to the VR gt Once the VR has powered up ensure the selected green LED1 through 16 above the CONF button matches the same configuration LED as the transmitter If not use the CONF button to select the correct configuration select the same number as the transmitter See section 5 1 6 for e
10. Technical Operations Manual The most important thing we build is trust VETA RECEIVER VR Cobham Surveillance GMS Products 1916 Palomar Oaks Way Ste 100 Carlsbad CA 92008 100 M0087X2 02 20 10 T 760 496 0055 F 760 496 0057 www cobl am com gms Revision History Version Date Main Changes from Previous version Edited by 05 22 2008 Initial Release 02 08 2010 GUI description is separated into a new document 100 M0087X2 2 of 31 www cobham com gms Table of Contents i ACRONIMS c rv 5 2 INTRODUCHON vr 6 2 1 Key System o aa 6 3 GENERAL SYSTEM INFORMATION pA 7 3 1 VIN 8 3 2 PO NENNE ee 8 4 GETING STARTED Gh 9 4 1 Mi 9 4 2 Key RF Settings For COFDM Transmission nssssssssrsserssserssrrssserssserssersssersssrssserssserssersssersssrsssersssresssrsssersssrssserssssrssssnne 10 5 HARDWARE OVERVIEW orina 12 5 1 VR FONG PONCE A jr 12 5 2 VR REAR PANET ar 15 5 3 Using External Down Converter iman iaa iia 19 0 SOFTWARE EE Eeer 22 I VETA CHAINING FEATURE pp 23 7 1 VETA Digital kepe aer VDR cananea 23 7 2 Compact Surveillance Modem CM 23 7 3 UDP Transmitter ssssorssseossersssersssrosssrsssrosserssseesssrssssrssssosserssseesssrsssersssssssersessesssrssserssssssserssssesserssseesssrssserssssesserssssessesssserssssnsserssssessesnne 23 O SPECIFICATIONS nuroa 24 8 1 RNET 24 8 2 RNF TN 24 8 3 DEMODULATION tao 24 oa EMU 24 8 5 AUDIO DECODING 25 8 6 POWER 25 8 7 VIN 25 8 8 ON unitat 26 8 9 Op
11. Transport stream protocol called Chaining to create the VDR VETA Digital Repeater the CSM Compact Surveillance Modem or a UDP Tx This is all available by utilizing the chaining feature which comes standard on all VETA Tx VR and VNA Contact factory for more information about the Chaining feature and the variety of applications it can be employed with 7 1 VETA Digital Repeater VDR An In band or cross band repeater can be made very simply with the VETA series Transmitter VT 2W VT C or VT L in conjunction with a VETA Receiver The user simply has to connect the Chaining Out of the VR into the Chaining In of a VETA Tx 7 2 Compact Surveillance Modem CSM The VETA Compact Surveillance Modem is much like the VDR with the addition of the VETA NETWORK ADAPTOR VNA The VNA allows for IP streaming of video or with a complement CSM a LAN Bridge CSB can be created across the link 7 3 UDP Transmitter A UDP transmitter can easily be employed using the Chaining Out of a VNA into the Chaining In of a VETA TX UDP can be sent to the VNA via the RJ45 connector which is converted to Chaining within the VNA and delivered to the VETA TX through the Chaining interface On the receiver Side a VR will send its Chaining Out to the Chaining In of a VNA The VNA can be connected to a router or simply another computer to distribute the UDP data 100 M0087X2 23 of 31 www cobham com gms 8 Specifications 8 1 COFDM RF INPUT
12. andle VHF to UHF frequencies from approximately 45 MHz to 1000 MHz When using external BDC s keep in mind that there is a limit to the length of the IF cable cable between the BDC and the VR which is based on o Excessive DC voltage drop BDC s usually have a specification calling out a minimum DC voltage for their units to work Excessive cable length can cause the DC voltage to drop below this minimum causing the system to fail This voltage drop can usually be calculated based on the manufacturer s cable properties Or you can simply measure the DC voltage at the BDC remember to keep a load on when making this measurement The bottom line is that when using remote power the user needs to ensure the DC voltage from the VR to the BDC is above the required minimum o The work around to excessive DC voltage drop is to power up the BDC s using local power Hence if the IF cable length is causing too much of a voltage drop use a local power supply to power up the BDC o Excessive IF signal loss Excessive cable length can also cause too much signal loss noted in dB before it gets to the VR Once again the manufacturers cable specifications can be used to calculate the dB loss based on frequency and cable length It can also be measured using a Spectrum Analyzer if one is available Signal loss results in system degradation noted usually in poor SNR readings and low input levels as seen on the OSD Remember that a 3 dB loss corresponds to hal
13. end to end delay Down to 44ms for 6 7 or 8 MHz Narrow BW to 120mS w VETA TX Only mode dependant Video Outputs 1 Composite w OSD 1 S Video Standards NTSC with and without pedestal or PAL Video Connectors Composite BNC F S Video p o J 1 DB 15F Output Impedance 75 Ohms Output Level 1V p p Frequency Response 10 Hz to 4 MHz 1 5 dB 8 5 AUDIO DECODING Number of Channels 2 Decompression Type MPEG Layer I amp II Musicam or NICAM User Selectable Musicam Compression Standard ISO IEC 13818 3 Musicam Bit rates 256 kbit s ch Musicam All bitrates supported Sampling Frequency 48 kHz only Musicam Nicam Ultra Low Latency Bits per Sample 12 or 8 Sampling Frequency 32 KHz 16 KHz or 8 KHz Frequency Response 200 Hz to 10 KHz 1 0 dB Analogue Audio Outputs Un balanced outputs Line Level Output Impedance lt 100 Ohms Unbalanced Connector LEMO 5 pin 8 6 POWER DC Voltage Range 9 18 V Reverse Voltage Protection Power Consumption 12 Watts W Optional AC to DC Adapter AC Voltage 90 264 VAC 45 440 Hz AC Power Consumption 13 Watts Circuit Breaker Protector 8 7 Physical Less Handles Dimensions 9 752 W x 4 8 D x 1 754 H 24 77 cm W x 12 19 cm Dx 4 45 cmH With Handles Dimensions 9 752 W x 6 8 D x 1 754 H 24 77 cm W x 17 27 cm Dx 4 45 cmH Weight 3 69 lbs 1 67 kg 100 M0087X2 25 of 31 www cobham com gms 8 8 Environmental Operational Temperature 10 to
14. f power loss o One possible work around to excessive signal loss when running long IF cable lengths is to use a good quality in line amplifier Make sure to follow manufacturers instructions very closely because improper installation of an inline amplifier could introduce other problems 100 M0087X2 20 of 31 www cobham com gms Veta Receiver RFIN FUTO O O IFOUT RFIN A A A B eno O asi Ovo C O AUD 4 V i OGAGL EXTERNAL IF OUT IF OUT Figure 8 External BDC Setup 100 M0087X2 21 of 31 www cobham com gms 6 Software Control Configuration control and monitoring of the VR are enabled through the use of GMS optional sold separately MS Windows based VR Configurator software program GMS Part Number for this Software is 630 SW0093 This Graphical User Interface GUI program provides the end user with a Straightforward way to interface with the VR unit During normal operation once a VDL link is established the VR Configurator GUI can be used to monitor the link statistics as well as control the receiver Monitoring the link statistics is an optional operation therefore if desired the VR Configurator GUI does not need to be active and can be disconnected from the VR unit For detailed information refer to the manual 100 M0131 Latest Revision 100 M0087X2 22 of 31 www cobham com gms 7 VETA Chaining Feature The VETA series of products use a Proprietary
15. hat the external BDC s can be powered through the IF cable referred to as remote power instead of using a local power source at the BDC This feature makes powering the BDC s convenient and less messy than dealing with additional power supplies It also makes it easier to install the BDC s in places where it may be difficult to have a local power source The BDC Power with options yes or no turns ON or OFF the VDC on the IF line The DC voltage up the IF line is equal to the voltage supplied to the VR If using long cable runs to external BDC the DC drop across the IF line may be such that the BDC are not able to power In this case one work around besides using higher quality coax with less DC loss ft is to increase the supply voltage to the VR As mentioned above in section 5 2 1 before selecting yes ensure the external BDC has the capability of being powered up through the IF line If not it could cause damage to the unit 100 M0087X2 19 of 31 www cobham com gms LO frequency must be entered in SA BDC Settings x MHZ Revi I Down Converter LO 6200 MH Turns VDC SE i Choose between ON or OFF Reve 1 Down Cony LO Side High High or Low side on the IF line injection ON BOC Gain Setting 20 0000 Enter gain of the BDC Figure 7 BDC Settings Window External BDC s are connected as shown in Figure 8 Ensure to use high quality 75 ohm impedance RF cable which can h
16. ht out of the box NOTE Additional cables and antennas may be delivered by GMS based on customer application Contact GMS for further information 4 1 Initial Checkout Prior to installing a VR unit into the desired target environment an initial checkout should be performed to ensure proper operation of the unit The initial checkout consists of configuring a basic VDL VETA Digital LINK wireless link In the case outlined we will assume a VETA Miniature Transmitter VMT is used to transmit to the VR Note that any MPEG 2 DVB T compliant transmitter can be employed instead if the VR is set up in standard DVB T Mode RF BW 6 7 or 8 MHz and not in ultra low delay mode Figure 1 shows a basic VDL configuration wireless link The following setup can be done either wirelessly with antennas or through hard line connection with 50 cable In either case make sure there is enough attenuation from the TX to the RX to avoid overdriving the receiver In most DVB T receivers their optimal input power ranges from 30 to 70 dBm The VR shown has internal BDCC installed locally within unit which is our standard VR configuration The steps necessary to setup the configuration shown are stated below VT N VETA Receiver VR 12VDC PWR IN VR TPS Lock A Monitor Figure 1 Basic VDL Setup 100 M0087X2 9 of 31 www cobham com gms gt Install omni directional antennas or ones best suited for the application onto the
17. icrowave RF signal and down convert it to the UHF intermediate frequency IF which comes out on IF OUT A and IF OUT B BNC connectors The IF OUT A and IF OUT B are then connected with external cables to the IF INA and IF IN B BNC connectors respectively If using external down converters the IF outputs from the external down converters are connected to the IF IN A and IF IN B in this scenario the RF IN A B and IF OUT A B are not used See section 5 3 below on using external down converters 7 WARNING external down converters can be supplied with 12VDC through the IF IN A or IF IN B ports from the VR Ensure the external DC can handle the 12VDC through the IF port before activating power or for that matter ensure the power is off before connecting otherwise damage could occur to the down converters The 12V power can be activated using GMS control software or the RF button on the front panel 100 M0087X2 15 of 31 www cobham com gms Table 2 RF Connections Connector Name Connector Type Comments RF IN A SMA F SMA F IF OUT A BNC F IF OUT B BNC F IFINA BNC F To demodulator decoder BNC F To demodulator decoder 5 2 2 ASI OUT One ASI asynchronous serial interface connector is provided This is a 75 ohm AC coupled output The ASI can be used if external decoders are preferred or to an ASI recorder or Multiplexer Table 3 ASI Connector Connector Name Connector Type Comments ASI BNC F ASI Stream
18. istance point to point or to multipoint transmission applications VETA uses a robust digital modulation system known as Coded Orthogonal Frequency Division COFDM that provides a robust link that is immune to multipath interference and provides crisp clear pictures in the most difficult of terrains This manual provides information on how to operate the VR VETA Receiver as well as pertinent technical information related to the overall system 2 1 Key System Features e COFDM Demodulation 2K Carriers or 400 e Bandwidths from 1 25 MHz to 8 MHz e Input Frequency 0 174 to 8 5 GHz In Bands e Internal or External Down Converters e Low End to End System Latency down to 44m S e Secure ABS BCRYPT 128 or 256 Encryption e Optional LAN IP Streaming Interface e Optional Video Server 0 2 400 carriers is optional with the 1 25 or 2 5MHz RF bandwidths 5 BCRYPT 128 or 256 bit optional 100 M0087X2 6 of 31 www cobham com gms 3 General System Information The VR VETA Receiver receives and demodulates DVB T 2k carriers signals with bandwidths of 6 7 or 8MHz Additionally optional 1 25 or 2 5 MHz RF bandwidths with 400 carriers allow both increased reception range and larger quantity of simultaneous A V links to operate in the same frequency band The wider bandwidths provide greater throughput that allow the system to transfer the highest quality video The standard VR is supplied with dual Diversity inputs and interna
19. l RF Block Down Converters BDCs with a user selected at time of purchase frequency band The VR s Maximal Ratio Diversity Combiner provides optimum reception in difficult fading and multipath environments Additionally the Diversity combining can provide up to 2 5 dB in link performance increasing the receivers sensitivity to 97 5 dBm at 8 MHz bandwidth Optional external GMS BDCs are available that can support other frequency bands and optimize reception when mounted directly to remote Antennas These remote BDC can be powered from the IF line of the VR or their own power supply The VR can also be optional supplied with internal LNAs for operation below 860 MHz or no internal Down Converter or LNA The latter option is used when the BDC is remotely mounted usually with an Antenna One of the biggest problems encountered in the transition from analog to digital A V systems has been the inherent digital coding decoding delays that in some digital systems are 400ms or more The VETA Transmitters amp Receivers employ internal MPEG 2 or MPEG 4 User Selectable Encoders and Decoders with specially designed low delay coding technology which provides an end to end latency down to 44ms without the introduction of any further MPEG encoding artifacts This ensures that the picture you see is what is happening now crucial for applications such as surveillance and law enforcement where personnel are reacting to real time events Control and s
20. low Table 6 J1 Multifunction Connector Connector Name Connector Type Pin Function Comments D DB 15 F 1 PWROUT 9VDC 18VDC NM BSF Ji POT DB 15 3 OND gt ST DB 15 AND D DB 15 pn RSSIB 0 45V D DB 15 7 Chain CIKOUT NM DB 15 8 GND D DB 15 9 ChamDATAOUT D DB 15 F Im Cant JL DB 15 11 OND D DB 15 12 ChainDATAIN TAS EAS CASA D DB 15 14 SLUMAOUT gt D DB 15 F 15 SCHROMAOUT 5 2 6 J2 Multifunction DB 9 M Connector The multifunction DB 9 connector provides for DC power in RS232 TX amp RX control and RS232 TX amp RX data The DC nominal voltage is 12VDC minimum is 9VDC and maximum should not exceed 18VDC Reverse polarity protection is provided but no protection for over voltage Power pins 1 amp 2 are internally connected as well as ground pins 3 amp 4 The receiver can be controlled remotely with GMS PC control software which is explained in more detail in Manual 100 M0131 This is done by connecting the PC RS232 transmit and receive lines to the RS232 TX CTRL and RS232 RX CTRL pins 5 and 6 In addition serial RS232 data sent from the transmitter can be received on pins 8 amp 9 RS232 TX DATA and RS232 RX DATA using a PC RS232 port or another appropriate device 100 M0087X2 17 of 31 www cobham com gms The remaining pins and their functions are described in the table below Table 7 J2 Multifunction Co
21. mal Normal Normal Normal Normal Normal Normal Normal Normal Normal Invert Invert Invert Polarity Blue Screen on no Video MPEG4 deblocking No No No No No No Filter On screen Display sm Power ion 100 M0087X2 29 of 31 www cobham com gms Appendix D Example of Default Configurations Settings for C2 Band CONFIGURATIONS Unit Mode DVB T DVB T DVB T DVB T DVB T DVB T DVB T DVB T DVB T DVB T DVB T DVB T DVB T BDC LO 5200 CC CC A O N OG N N CO OR RF Frequency RF Frequency 4400 4700 5000 4400 om am am 4700 5000 4400 om 5000 4400 4700 am 4400 se Ji Je fe fe Je fe fe fe for er for fr for for fer OFDM Normal Normal Normal Normal Normal Normal Normal Normal Normal Normal Normal Normal Normal Normal Normal Normal Polarity Blue Screen on no Video MPEG4 deblocking No No No No Filter On screen Display a 100 M0087X2 30 of 31 www cobham com gms Appendix E Control Cable NOTES 1 REFERENCE BOM 780 C0354X2 FOR REFERENCE DESIGNATIONS SHOWN AS ON DRAWING AND PART DESCRIPTIONS ECO REV LABEL FINAL CABLE ASSEMBLY WITH PART NUMBER 780 C0354X1 USING BEST COMMERCIAL METHOD oe Xt INITIALRELEASE Ian N LABEL CONNECTOR WITH REFERENCE DESIGNATOR AND DESCRIPTION AS SHOWN USING BEST COMMERCIAL METHOD LABEL ener X2 CHANGE JUMPER WIRE SIZE 031000 TO BE WITHIN 3 0 OF CONNECTOR REDE gt DC BLK IK POWER 1 2 9 16VDC RED Gy 3 GND BLK E
22. nnector Connector Name Connector Type Pin Function Comments DC Mi LL LL A US S DB 9 M GND 3 RENE IL Saas Sk IS re E RS232 RX DATA 5 2 7 RJ 45 VIDEO SERVER Optional Video Server A VETA Receiver can optionally be configured to have an integrated video server installed The video output from the VR will now show an overlay generated via the video server When connected to a valid network the Video server will show its IP address on the video output as an overlay If no Ethernet is connected an icon of a RJ 45 with an X through it will show in the upper right corner of the video output to indicate no network connection was made When a valid network has been attached the user can open their internet browser and enter the IP address shown on the video overlay The video shown at the video output of the VR should now be simultaneously streaming to the web browser In order to make changes to the video server the user will need the username and password The default user name is admin The default password is 9999 To turn off the video overlay Suppose for example that the IP address of the device is 192 168 1 168 The user would type in http 192 168 1 168 tailpage htm After login The user would select ON or OFF in the OSD column Warning Please write down the IP address of the device before turning off the OSD For more details on the video server see the Video Server Manual 100 M
23. s and power switch are explained in this section 5 1 1 Power Switch The Power Switch located on the far right side of the panel enables VDC to the system up position is ON down position is OFF On powering the VR the eight green configuration LED s see section 5 1 6 will light up indicating the current configuration the one that was active 100 M0087X2 12 of 31 www cobham com gms when the VR power was turned off In addition the red Alarm LED see section 5 15 may light if the VR is unable to lock or decode the incoming signal 5 1 2 Received Signal Strength Green LED s The green LED s located above the MODE button when ON indicate the signal strength the RF input power level from the minimum no LEDs light to the maximum strength all four LEDs light 5 1 3 RF Green LED The RF green LED indicator located above RF button when ON indicates that the VR is locked to the incoming signal system is operating normally 5 1 4 Lock Yellow LED The LOCK key icon yellow LED indicator located above the RF button when is ON indicates that incoming signal is encrypted 5 1 5 Alarm Red LED The Alarm red LED indicator located above the RF button indicates a fault condition or an alarm when ON This can be an indication that there is no RF lock no video in the Transport Stream or non matching Encryption Key 5 1 6 Green Config LEDS 1 to 8 The 8 green LEDs located above the CONFIG button indicate which one of the sixteen s
24. tatus monitoring can be accomplished via the VR Front Panel or via an external IBM PC and GMS M S Windows application control software Critical performance parameters like Signal To Noise Ratio SNR Pre and Post FEC Bit Error Rate BER and Packet Errors are provided both on the On Screen Display and M S Windows control program The VR also includes internal low latency Audio Video Decoder MPEG 2 or MPEG 4 and output circuits that provide video L R audio and data channels Security of transmission is ensured by the use of Standard ABS encryption or for greater security the optional BCRYPT 128 or 256 bit scrambling algorithms The optional VETA IP Network Adapter VNA provides the VR with a video streaming capability for network interfacing An optional M S Windows software Decoder and Recording application is also available See Section 7 on VETA Chaining feature Alternatively the VR can have an integrated video server installed for web streaming applications The VR s versatile housing can be optionally mounted in a suitcase can sit on a desktop or be configured to mount in a 19 inch instrumentation rack Option Dependant 100 M0087X2 7 of 31 www cobham com gms 3 1 Warranty GMS offers a 12 month standard product warranty During this period should the customer encounter a fault with the equipment we recommend the following course of action Check the support section of the website for information on that
25. th LED s No incoming RF signal Ensure that RF source is off active Red Alarm Lit RF LED Off 100 M0087X2 27 of 31 www cobham com gms Appendix B Troubleshooting Section Possible Reason Action Remove interfering signal or Interference switch to alternative frequency Where possible mount Receive antenna antennas unobstructed away positioning from other objects and as high Poor Link as possible performance Poor alignment of i i Ensure a proper alignment directional antennas Unsuitable Antennas Ensure that antennas are in a right band Ensure that attenuation setting Reduced Transmit Power _ is appropriate for direct output or amplifiers connected Select horizontal resolution Horizontal Resolution that matches the resolution of Reduced the source image z quality Ensure appropriate Audio Video Bit Rate mode is selected or fully disabled if not required SNR Reading 0 0 Either on the Tx or Rx but other RF OFDM Polarity Mismatch whichever is more accessible parameters switch the OFDM polarity locked 100 M0087X2 28 of 31 www cobham com gms Appendix C Example of Default Configurations Settings for LS Band CONFIGURATIONS Unit Mode DVBT DVBT DVBT DVBT DVBT DVBT DVBT DVBT DVBT DVBT DVBT DVBT DVBT BDC LO 2550 coma r a EES RF Frequency 1755 1802 1850 1755 1802 1 ER 2200 2300 2400 2200 2300 2400 2345 1802 2300 1 1802 OFDM R Normal Normal Normal Nor
26. tional LAN USB Interface EEN 26 e0 R2 DATA OUTPUT nn 26 oI NRL 26 8 12 REMOTE CONTROL eee 26 813 LOCALMONTTORIN CG n 26 8 14 REMOFEMONITORINO leer 26 O lo SECURIT ORTION ras 26 100 M0087X2 3 of 31 www cobham com gms List of Tables Table NN 13 Table 2 RF ConnectionS vu cs 16 Table ANNEN 16 Table 4 Video Connectar E 16 Table 5 Te Connect 6 Lu aaa 16 Table 6 J1 Multifunction ConnectOor sesserserssrssrssrssrssersersrssrssrserssrsserserssrnsensenserserserserssrnsensensersesserserssensensessessersesssrssessensessessessesssessensensensen 17 Table 7 J2 Multifunction ConnectOor ersrserserssrssrssrssrssersersrssrssrssrssrsserserssrnsensenserserserserssensensensersesserserssessensessessersesssrssensensessessessesssessensensensen 18 List of Figures Figure Bosi VDL SU oo 9 Figure 2 AL E 11 Figure 3 VR Front VieW ssrssssserssseesserssserssssosserssseesssrssserssssesserssssrssssssssrssssessesssserssssssserssssesserssssrssssssserssssessesssssrssssssserssssessssssserssssssssssesens 12 ETEN 12 Foo ROB 14 Figure NE LE an 15 Figure 7 BDC Settings WIndow siii ada 20 Figure 8 External BDC Te BE 21 List of Appendixes Appenad Ai LED NA AO siria aiar 27 Appendix B Troubleshooting Section EEN 28 Appendix C Example of Default Configurations Settings for LS Band 29 Appendix D Example of Default Configurations Settings for CZ Band EE 30 Appendix E Reder ee pinn ERE A ERE ANTE EEO EENE E 31 10
27. tored configurations is currently selected Stored configurations are discussed in Section 6 of this manual and in section 5 1 8 below If Config LED is flashing the BDC power is OFF and the RX will not be able to receive a signal through the BDC The sixteen configurations are represented in binary format refer to Table 1 with LED 4 being the most significant bit and LED 1 being the least significant Note LED 5 will always be light which indicates receiver is in 16 configuration mode Table 1 Config LED s Config Number EECH e ale ae es ee i 2 I 2 KAST VG EE ed ad ead ad sca AAA AAA 100 M0087X2 13 of 31 www cobham com gms 5 1 7 Config Button The Config button when pressed selects the next configuration from memory The user will see the LEDs on the front panel increment in a binary fashion The 16 configurations in memory define all potential variables including center frequency modulation bandwidth Guard Interval and OFDM polarity See section 6 and software manual 100 M0131 for a full discussion on setting the parameters for each configuration Note that this configuration selection 1 through 16 must match the transmitter s OFDM modulation parameters selection for the link to work 5 1 8 RF Button Pressing the RF button toggles ON OFF DC power to the Block Down Converters Flashing Config LED indicates OFF state and solid green ON state When using the internal BDCC the DC power m
28. ust be on 5 1 9 Mode Button Pressing the Mode button toggles the diagnostic On Screen Display OSD Pressing the mode button will toggle the OSD on with the spectrum display showing input A from the Composite Video output port Pressing the mode button a second time will change the spectrum display to input B Pressing a third time will turn the OSD off The diagnostic data displayed on top of the current video includes signal to noise data input power level frequency as well as some captured parameters from the incoming RF signal as shown in Figure 5 The OSD is explained in detail in Manual 100 M0131 Input GHz 2 275 rinputskev Aredad Input Lev B 8676 Input Lev C Input Lev D de Demod Lock AB TPS Lock FEC Lock Constel Mod 8MHz PreUlt Err PostUit Err Packet Err SNR A SNA B SNR C SNR D Figure 5 VR OSD 100 M0087X2 14 of 31 www cobham com gms 5 2 VR REAR PANEL The rear panel contains the connectors necessary for interfacing to the VR Detailed descriptions of all the VR connectors and components see Figure 6 are included in the following sections Figure 6 VR Rear View 5 2 1 RF AND IF CONNECTIONS The VR can be configured with internal down converters which is the normal default hardware setup or with external down converters When using internal down converters the antennas are connected to the diversity RF input RF IN A and RF IN B Internal down converters take the m
29. xplanation of binary representation of configs gt If the configuration LED is flashing green press the RF button on the front keypad this action provides power to the internal down converters and the LED will stay solid green gt After approximately 5 seconds the link should be established and video provided by the source should be displayed on the monitor The RF green LED should light as well as the signal strength green LED indicators gt Press the MODE button to turn on the diagnostic OSD on screen display gt If the red Alarm LED lights it may be an indication that the receiver is unable to lock to a signal Check the following Ensure the receiver and transmitter lit configuration green LED 1 through 16 located above the CONFIG button is the same If not press the CONFIG button on either the transmitter or receiver so they match Ensure the PWR switch for the VR is ON and that the RF button has been pressed after apply 12VDC If the TX and RX are physically too close to each other the RX may overload causing distorted Video You may reduce the power of the TX low power mode through VMT GUI or move the TX amp RX further apart 50 Ohm RF attenuators can also be used to attenuate power from the TX VV WV WV VV 4 2 Key RF Settings For COFDM Transmission The RF settings shown in Figure 2 show the key COFDM configurations for setting up any COFDM link The settings underlined in RED must be matched specifically
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