Operators Manual
Contents
1. Camera Mounted Transmitter RFX CMT II SD HD OPERATOR S MANUAL Copyright 2007 RF Ceniral Need help Contact HME AN Technical Support extreme 866 732 0113 866 RFC 0113 RFX CMT II SD HD LAST REV AUG 2007 Page 1 of 30 Operator s Manual RF ExtremeCare 866 732 0113 CONTENTS 1 GENERAL SAFETY INFORMATION 4 WE E un RE 5 1 2 Maximum RF Power Density Limits cccceeeeeeeeeeeeeeeeeeeeeneeeeeeeeeeeeeeeeesneeeeeeees 6 1 3 Mandatory Safety Instructions to Installers amp User 7 2 INTRODUCTION WEE 8 OD SPECIFICATIONS E 9 4 CONNECTOR PIN OUTS iisssiisscssasisiasacnacicoabonsmasisiaapvaweianswasninstitonevaupiessncislnsesarsesswontinesbante 10 4 1 Video BNC connector ce cesecessseeseeessaesessscensesesdaeseesseesseensdaesnssseenseensanenenes 10 4 2 Video Multiway GONMEGION ccisisccsenincsentdeuticatnnietonn sbnetnentinstnerstarbnengnentanapeasuentoneseaonhs 10 4 3 Audio 76 1 e 11 4 4 Power COMME e 11 4 5 Remote Connector EE 12 5 MODULE e de LE 13 Block NAAN See 13 5 1 Audio Video ENCOUN iosicet ees esedcdssesedsdededed cdodased ee 14 5 2 AO Ree E e E 15 5 3 Power rue TE 15 54 Front Panel PCB E 16 6 SYST EM OPERATION WE 17 SCH ASAI aA WAC AC SS ees 17 6 2 Powering up the Clip On with the PA disabled sssnsnennneeseesennnnnnnnneseerrrrnnnneeeeee 17 6 3 Status Monitoring front panel LEID 17 6 4 Operator Controls Menus ee 18 6 5 Initialization Screen ee Aere Ee 18 6 62. The function of the power amplifier is to amplify the signal from the COFDM modulator to a suitable level for transmission via the N type connector into the antenna The amplifier is required to be highly linear to accommodate the multiple carrier signal formats employed for digital system operation with very low distortion low inter modulation between carriers The nominal output power is 20dBm 100mW across the 1 5 2 2 5 3 5 4 5 5 8 6 5 or 7GHz band as appropriate Nominal overall gain is 29dB thus the nominal RF input level is 9dBm The amplifier operates from a single 8 Volt supply Nominal operational supply current is 700mA The status of the PA is provided by LEDs to monitor RF output level green and DC present red and also monitored by the main controller and displayed as the status monitoring menu See 6 3 To ensure good RF practice when power is applied to the RFX CMT II Camera back always make sure that there is a suitable load or antenna connected to the RF output RFX CMT II SD HD LAST REV AUG 2007 Page 15 of 30 Operator s Manual RF ExtremeCare 866 732 0113 CENTRAL 5 4 Front Panel PCB The Front Panel consists of a micro controller 16 character by 2 line LCD display operator switches and interface circuits The Front Panel is the main system controller for the unit All configuration parameters video settings audio settings MPEG encoder parameters frequencies etc are held on this board An IC
3. paragraph 0 6 7 4 Select MPEG Menu The full MPEG set up menu is shown on Sheet 2 details are as follows 6 7 5 Encoder Pre set SD and HD modes The unit is programmed with pre set MPEG and COFDM parameter sets for both Standard and High definition modes modes the appropriate values are displayed according to Definition setting see paragraph 6 7 6 Parameter sets are held in eight user selectable preset memories 0 7 Details of the pre sets are shown on a chart which is shipped with the equipment The Encoder Pre set menu selects the MPEG encoder profile 4 2 2 4 2 0 and SP ML low delay video data rate Modulation mode and FEC rate After scrolling to the chosen memory pre set additional information lt i gt can be accessed though the lt gt buttons Pre programmed encoder parameter sets can vary according to individual customer requirements a separate chart is included in the documentation accompanying the equipment when shipped from the factory 6 7 6 Definition SD HD selection This function allows the CMT II to be switched between SD and HD encoding mode RFX CMT II SD HD LAST REV AUG 2007 Page 19 of 30 Operator s Manual RF ExtremeCare 866 732 0113 CENTRAL 6 7 7 PID menu The PIDs which are inserted into the DVB transport stream as part of the encoding process may be set via this menu 6 7 8 Video Input In HD encoding mode the video input is automatically selected to SDI and the Video Input sel
4. Summary Current Operational State and Status Warning screens 00 18 6 7 System Configuration Operations Menu MPEG model 19 Ch Frequency UE 19 PA CO EE 19 Selec AS EE 19 Sell MPEG MERU sisitemi i a a a i i i e 19 Encoder Pre set SD and HD modes nenene 19 6 8 System Configuration Operations Menu ASI model 21 Ch Frequency TE 21 e TE 21 Select ERT 21 el ONE 21 WONSIGIANON EE 21 Ree 21 Guard MIATA EE 21 GE UMA DE 21 6 9 System Configuration Engineering Menu 21 Beete 21 ee E 22 Cable Eelere eege EEN 22 EBES ue 22 RFX CMT II SD HD LAST REV AUG 2007 Page 2 of 30 Operator s Manual RF ExtremeCare 866 732 0113 CENTRAL HEIEREN ee gege 22 7 PREPARING FOR OPERATION 27 7 1 The RFX CMT II transmitter cant tb li itd Bsa eid cence 27 7 2 The Receiving Equipment ANEN 27 8 APPENDIX A MPEG Encoder Parameter Sets cssccccecesseeeeeceeseeeeeeeeeeeeetaees 29 9 APPENDIX B Table of DVB T bit rates 2 0 eeccccceceeseeeeeeeeeeeeeeeeeseeeeeeeaaeeeeesanes 30 RFX CMT II SD HD LAST REV AUG 2007 Page 3 of 30 Operator s Manual RF ExtremeCare 866 732 0113 1 GENERAL SAFETY INFORMATION The information that follows together with local site regulations must be studied by personnel concerned with the operation or maintenance of the equipment to ensure awareness of potential hazards WARNING RF Power Hazard High levels of RF power are present in the unit Exposure to RF or micr
5. screens showing the current operational state are accessed via the P button These show encoder preset additional values are further available through the A buttons DVB PIDs video set up audio set up A screen showing status warnings is accessed via the lt button These show Video input OK additional values are further available through the A Y buttons PA not inhibited MOD TS MOD rate Synth locked RFX CMT II SD HD LAST REV AUG 2007 Page 18 of 30 Operator s Manual RF ExtremeCare 866 732 0113 CENTRAL 6 7 System Configuration Operations Menu MPEG mode From the summary screen the AW buttons are used to select the required sub menus the Enter button is then used to select the required function 6 7 1 Ch Frequency Menu This menu is used to select one of the sixteen pre programmed channels CH1 Ch16 or manual frequency selection The Man setting allows control of the transmit frequency in 0 5MHz steps within preset limits The Enter button allows the lt P buttons to select the required digit the AW buttons then select the required value The Enter button then stores the value and returns to the Main menu 6 7 2 PA Menu This menu allows the transmitter output power amplifier to be switched on and off 6 7 3 Select ASI Menu This menu is used to switch the unit into ASI input mode Once ASI mode is selected the menu changes to OPS MENU ASI MODE see the appropriate menu chart and
6. the audio is embedded into the SDI input In SD mode the audio input may be SDI embedded digital AES and analog or internal test tones The transmitter will also accept an ASI DVB transport stream The COFDM modulation is selectable between 6 7 and 8MHz RF bandwidth Modulation Constellation FEC rate and guard interval are also selectable through the front panel menu system RF Centrale RMR IIl 2 way or 6 way diversity receive terminals are usually used in conjunction with the CMT II Please note that these receivers must be equipped with the correct RF Central SD HD decoder modules to enable decoding of signals from this version of transmitter Typical RFX CMT Il system configurations Digital low power transmissian Typical CMT II transmitter configuration er showing direct docking arrangement b m battery pack i Optional DC input from video cable cameraman s battery belt Audio cable RFX CMT II SD HD LAST REV AUG 2007 Page 8 of 30 Operator s Manual RF ExtremeCare 866 732 0113 3 SPECIFICATIONS 2 0 2 5GHz band 1 5 3 5 4 5 6 5 and 7 GHz bands also available 300MHz standard bandwidth Up to 16 pre set channels or tuning in 1 MHz steps via side mounted panel control 100mWw Omni Directional 4dBi gain nom COFDM DVB T 2k QPSK 16QAM 64QAM FEC 3 hele Is Guard interval 1 32 Ha He 1 4 Menu selectable via side mounted panel control 8MHz selectable 6 7 8MH
7. two wire interface is used to communicate with all other intelligent devices within the unit This carries the command data and reads back status data from all boards within the unit At power up this board initializes all the other boards and during normal operation monitors all the major functions and reports any problems as part of the unit status The chosen MPEG parameter set is selected from the Front Panel by the operator These parameter sets are held in the non volatile memory of the front panel unit and can only be upgraded at the factory RFX CMT II SD HD LAST REV AUG 2007 Page 16 of 30 Operator s Manual RF ExtremeCare 866 732 0113 6 SYSTEM OPERATION 6 1 Camera Interfaces The RFX CMT II can be supplied with one of three possible battery and camera interfaces e Sony V Block IDX e Anton Bauer Gold Mount PAG These provide a flexible and versatile mounting system suitable for a wide range of cameras and battery options The RFX CMT II is first mounted onto the camera rear battery interface If required an appropriate battery can then be docked onto the rear of the Clip On transmitter The video and audio cables must then be connected between the camera and the RFX CMT ll If a battery is docked onto the rear of the RFX CMT II no external DC power lead is required A separate lead is only required if a battery belt or external power supply is used Care should be taken to prevent damage to an external power su
8. 3 Select MPEG Menu This menu is used to switch the unit into internal MPEG encoder mode Once MPEG mode is selected the menu changes to OPS MENU MPEG MODE see the appropriate menu chart and paragraph 6 7 6 8 4 Select ASI Menu This menu allows the modulation parameters to be individually set when the unit is operated in the ASI input mode Details are as follows 6 8 5 Constellation Allows the modulation to be set QPSK 16QAM 64QAM 6 8 6 Code rate Allows the Viterbi FEC to be set 1 2 2 3 3 4 5 6 7 8 6 8 7 Guard interval Allows the Guard interval to be set 1 4 1 8 1 16 1 32 6 8 8 Bandwidth Allows the COFDM modulation bandwidth to be set 6 7 8MHz 6 9 System Configuration Engineering Menu The engineering menu is entered by pressing the lt and C buttons simultaneously for 10seconds until select ENGINEERING appears then press the E button 6 9 1 Prog Channels Each of the sixteen frequency channels can be independently assigned to the required frequency with 0 5MHz resolution RFX CMT II SD HD LAST REV AUG 2007 Page 21 of 30 Operator s Manual RF ExtremeCare 866 732 0113 The AY buttons are used to select the Channel to be assigned The Enter button then allows the four A V lt P to edit the required frequency The Enter button then stores the value and returns to the top level of the Engineering menu 6 9 2 Inventory The firmware version for the encoder and main unit controlle
9. ICNIRP document may be freely downloaded from the internet at www icnirp de documents emfgadl pdf PDF file Issue Status Issue Date Changes 1 28 03 2007 Initial Issue 2 19 06 2007 Revised SD HD capable RFX CMT II SD HD LAST REV AUG 2007 Page 6 of 30 Operator s Manual RF ExtremeCare 866 732 0113 CENTRAL 13 Mandatory Safety Instructions to Installers amp Users Use only manufacturer or dealer supplied antenna Antenna Minimum Safe Distance 20cm 8 inches Antenna Gain 4 0 dBi referenced to a dipole The Federal Communications Commission has adopted a safety standard for human exposure to RF Radio Frequency energy which is below the OSHA Occupational Safety and Health Act limits Antenna Mounting The antenna supplied by the manufacturer or radio dealer must not be mounted at a location such that during radio transmission any person or persons can come closer than the above indicated minimum safe distance to the antenna i e 20cm 8 inches To comply with current FCC RF Exposure limits the antenna must be installed at or exceeding the minimum safe distance shown above and in accordance with the requirements of the antenna manufacturer or supplier Base Station Installation The antenna should be fixed mounted on an outdoor permanent structure RF Exposure compliance must be addressed at the time of installation Antenna Substitution Do not substitute any antenna for the one supplied or recomm
10. ber DEC PCR VID AV1 RFX CMT II OPS MENU MPEG ENCODER MODE Sheet 2 RFX CMT II SD HD LAST REV AUG 2007 Page 24 of 30 Operator s Manual RF ExtremeCare 866 732 0113 CURRENT OPERATIONAL STATE KC Summary screen CONFIGURATION MENU v v Select ASI MENU Constellation 6QAM Code rate Edit constellation Edit code rate 16QAM 1 2 y 64QAM 2 3 y QPSK 3 4 y 5 6 y 7 8 RFX CMT II OPS MENU ASI MODE RFX CMT II SD HD LAST REV AUG 2007 Page 25 of 30 Operator s Manual RF ExtremeCare 866 732 0113 CENTRAL ENGINEERING MENU To access the Eng menu press the C and a buttons simultaneously hold for 2 to 10 seconds Inventory rine VPZ Spectrum LCD Contrast E y TDDB 0147 08 D Spectrum invert Contrast Oe he ak th E TDAV 0402 02 SC diez Tig le tio oak Spectrum normal Audio 1 i p 600 D set group 15 y Select GE TDAV 0401 02 AUDIO 1 i p Z gt Audio 2 Up 50k Audio 2 i p 600 RFX CMT II ENG MENU RFX CMT II SD HD LAST REV AUG 2007 Page 26 of 30 Operator s Manual RF ExtremeCare 866 732 0113 CENTRAL 7 PREPARING FOR OPERATION EQUIPMENT PREPARATION Prior to the start of operations
11. blies Audio Video Encoder COFDM Modulator RF Power Amplifier Display System Controller Block diagram rea Audio 1 Analog SS AES3 Audio 2 B AES audio 7 Video input HD SD SDI CVBS YUV YC Final RF frequency DVB transport stream RFX CMT II block diagram RFX CMT II SD HD LAST REV AUG 2007 Page 13 of 30 Operator s Manual RF ExtremeCare 866 732 0113 CENTRAL 5 1 Audio Video Encoder The Encoder board performs the following main functions SDI to Digital de serializer Converts the SDI serial digital video input to an 8 bit parallel digital video bus Analog to Digital Audio Converter 48kHz 24 bit This is only used when the audio input is selected to analog Audio 1 or left channel Audio 2 or right channel The two channels are first buffered by a variable gain stage to cater for either Mic or Line level inputs A switchable 30dB stage is also included to cater for low level Mic inputs The two audio channels are then converted into an US serial data stream Micro controller Writes control data and reads status data to from the MPEG2 Encoder MPEG2 Encoder Operates in either SD or HD encoding modes A set of encoding parameters is loaded into the encoder at power up These are selected from one of the preset encoder memories See 6 7 5 ASI input mode When ASI input mode is selected the MPEG2 encoder is by passed and the ASI transport stream passed direct to the CPFDM modulato
12. ce 7 PBMP 3000 24 128 64 QAM MP H14 L 22 00 1080 Frame 384 Sid 5006 11 C2 3 G1 32 Intraslice 25 29 fps Intraslice 8 PBMP 3000 18 096 64QAM MP H14 L 16 00 720P Frame 384 Std 5014 10 C1 2 G1 32 Intraslice 50 59 fps Intraslice SD 1 PBMP 3000 18 096 16 QAM 422 P ML 16 00 PAL NTSC Field 256 Low 1008 10 C1 2 G1 32 Intraslice Intraslice 2 PBMP 3000 13 271 16 QAM MP ML 11 5 PAL NTSC Field 256 Low 1005 69 C2 3 G1 4 Intraslice Intraslice 3 PBMP 3000 8 294 QPSK MP ML 6 50 PAL NTSC Field 256 Low 1005 42 C3 4 G1 8 Intraslice Intraslice 4 PBMP 3000 5 529 QPSK MP ML 4 00 PAL NTSC Field 256 Low 1005 40 C1 2 G1 8 Intraslice Intraslice 5 PBMP 3000 18 096 64 QAM 422 ML 17 00 PAL NTSC GOP 12 256 Std 1009 10 C1 2 G1 32 GOP 12 6 PBMP 3000 13 271 16 QAM MP ML 12 00 PAL NTSC GOP 12 256 Std 1006 69 C2 3 G1 4 GOP12 7 PBMP 3000 8 294 QPSK MP ML 7 0 PAL NTSC GOP 12 256 Std 1006 42 C3 4 G1 8 GOP 12 8 PBMP 3000 5 529 QPSK MP ML 4 5 PAL NTSC GOP 12 256 Std 1006 40 C1 2 G1 8 GOP12 RFX CMT II SD HD LAST REV AUG 2007 Page 29 of 30 Operator s Manual RF ExtremeCare 866 732 0113 9 APPENDIX B Table of DVB T bit rates 8MHz COFDM RF Bandwidth Modulation Code rate Bit rate Mbit s at each guard interval symbol CN RFX CMT II SD HD LAST REV AUG 2007 Page 30 of 30 Operator s Manual RF ExtremeCare 866 732 0113
13. ection function is omitted from the menu In SD encoding mode the CMT II can accept SDI digital video via BNC connector Component YC YUV inputs via the six pin LEMO Composite video via BNC connector Internal test bar patterns of either 75 100 or alternating between these two Note The CVBS LEMO input Pin 1 amp 2 is paralleled with the BNC input when CVBS is selected the operator should connect to only one of these inputs otherwise an incorrect signal level may result Signal routing is managed by the controller according to the selected options 6 7 9 Audio Menu The Audio menus are split into two levels Select Input and Set Level The input can be selected to Analog AES3 digital SDI embedded Internal test tones OdB FS or 18dB FS When in analog audio input mode both channels Ch1 and Ch 2 can be individually set for either Line or Mic input selecting Mic gives a fixed 30dB gain There is also a level adjustment providing a 20dB adjustment in 0 5dB steps The analog audio input impedance can be set to either 600 Q or 50K Q through the Engineering menu paragraph 6 9 5 RFX CMT II SD HD LAST REV AUG 2007 Page 20 of 30 Operator s Manual RF ExtremeCare 866 732 0113 CENTRAL 6 8 System Configuration Operations Menu ASI mode 6 8 1 Ch Frequency Menu This menu is identical to that mentioned in paragraph 6 7 1 6 8 2 PA Menu This menu is identical to that mentioned in paragraph 6 7 2 6 8
14. ended by the manufacturer or radio dealer You may be exposing person or persons to excess radio frequency radiation You may contact your radio dealer or the manufacturer for further instructions Warning Maintain a separation distance from the antenna to a person s of at least 20cm 8 inches You as the qualified end user of this radio device must control the exposure conditions of bystanders to ensure the minimum separation distance above is maintained between the antenna and nearby persons for satisfying RF Exposure compliance The operation of this transmitter must satisfy the requirements of Occupational Controlled Exposure Environment for work related use Transmit only when person s are at least the minimum distance from the properly installed externally mounted antenna RFX CMT II SD HD LAST REV AUG 2007 Page 7 of 30 Operator s Manual RF ExtremeCare 866 732 0113 2 INTRODUCTION The RFX CMT I Wireless Camera system is specifically designed to support Standard Definition and High Definition Wireless Camera operations and is derived from RF Central s very successful RFX CMT Wireless Camera system The system is comprised of the transmitter that contains an audio encoder SD HD video encoder COFDM modulator power supplies and an RF power amplifier Attached directly to this transmitter is an omni directional antenna The transmitter is switchable between SD and HD encoding modes directly for the front panel In HD mode
15. ensure that the connectors are compatible and of good quality to avoid problems at site Check that the receiving antenna receiver interfaces are clean and free from dust and other unwanted materials If tripods are to be used to mount the equipment make sure that some means of securing the tripod or of weighting it down is provided Gusty wind conditions may put installations at risk particularly when parabolic antenna dishes are to be used Make sure that all batteries if used are fully charged and whenever possible provide a spare with the cable to connect it to the receiver RFX CMT II SD HD LAST REV AUG 2007 Page 27 of 30 Operator s Manual RF ExtremeCare 866 732 0113 CENTRAL Check that the receiver channel frequencies are compatible with those of the RFX CMT II Transmitter and set the channel selector switch to the channel number required The Receiver is labeled with channel number and frequency information With Two Box receivers the Receiver Head and Control units may be operated at distances up to 600 meters apart RF Central triax cable is supplied in standard lengths of 100 and 200 meters and will plug together to create the lengths required Check that the necessary lengths of triax interconnecting cable are available and that the cable and cable connectors are in serviceable condition Whenever practical set up the system and test it before leaving for the remote site to ensure that all components of the system are
16. ity Limits The RF Radiation Power Density limit figure recommended by RF Central is based upon guideline levels published in a IEEE standard C95 1 1999 IEEE Standard for Safety Levels with respect to Human Exposure to Radio Frequency Electromagnetic Fields 3 kHz to 300 GHz b Guidelines for Limiting Exposure to Time varying Electric Magnetic amp Electromagnetic Fields up to 300 GHz published in 1998 by the Secretariat of the International Commission on Non lonizing Radiation Protection ICNIRP Both documents define guideline RF power density limits for Controlled and Uncontrolled environments An uncontrolled environment is defined as one in which the person subjected to the RF radiation may be unaware of and has no control over the radiation energy received The uncontrolled environment conditions can arise even in the best regulated operations and for this reason the limits defined for the uncontrolled environment have been assumed for the RF Central recommended limit Documents a and b also show the RF power density guidelines to be frequency dependent Different power density frequency characteristics are presented in the two documents To avoid complexity and to avoid areas of uncertainty RF Central recommends the use of a single power density limit across the frequency range 100 kHz to 300 GHz The 1w m power density limit we recommend satisfies the most stringent of the guidelines published to date Footnote The I
17. owave power can cause burns and may be harmful to health Switch off supplies before removing covers or disconnecting any RF cables and before inspecting damaged cables or antennas Avoid standing in front of high gain antennas such as a dish and never look into the open end of a waveguide or cable where RF power may be present Users are strongly recommended to return any equipment that requires RF servicing to RF Central WARNING GaAs BeO Hazard Certain components inside the equipment contain Gallium Arsenide and Beryllium Oxide that are toxic substances Whilst safe to handle under normal circumstances individual components must not be cut broken apart incinerated or chemically processed In the case of Beryllium Oxide a white ceramic material the principal hazard is from the dust or fumes which are carcinogenic if ingested inhaled or entering damaged skin Please consult your local authority before disposing of these components CAUTION Tantalum Capacitors When subjected to reverse or excess forward voltage ripple current or temperature these components may rupture and could potentially cause personal injury CAUTION This system contains MOS devices Electro Static Discharge ESD precautions should be employed to prevent accidental damage RFX CMT II SD HD LAST REV AUG 2007 Page 4 of 30 Operator s Manual RF ExtremeCare 866 732 0113 CENTRAL 1 1 Health A Safety Exposure to Non lonizing RF Radiation Safe Wo
18. pply if a battery is docked since current can be taken FROM the Power Connector 6 2 Powering up the Clip On with the PA disabled To disable the RF Power Amplifier the front panel buttons C and lt are both pressed down together as the unit is switched on and initializes This allows the transmit frequency to be checked before the PA is switched on In this condition the front panel LED will be flashing RED PA status can be checked according to section 6 6 The PA can be re enabled by cycling the power to the CMT II off on alternatively the PA may be turned on and off through the control menu 6 7 2 6 3 Status Monitoring front panel LED The front panel LED indicates the condition of the D Cam Clip On as follows GREEN Normal Operating condition GREEN FLASHING CMT II is functioning but has no video or ASI input RED FLASHING The Power Amplifier is turned off RED Clip On internal fault condition consult the status menu through the LCD display see section 6 6 RFX CMT II SD HD LAST REV AUG 2007 Page 17 of 30 Operator s Manual RF ExtremeCare 866 732 0113 CENTRAL 6 4 Operator Controls Menus The CMT II has three control menus Operations menu for internal MPEG encoder mode Operations menu for external ASI mode and Engineering menu To access the Engineering menu press C repeatedly to reach the menu summary screen and then press and hold the C and a buttons simultaneously hold for 2 to 10 second
19. r DC Power Supplies Switching DC DC converters are used to generate the various supplies from the incoming 11 18V battery supply These include 2 5 3 3V 5V 8V and 5V supplies There are no field replaceable parts on the Encoder board If a fault occurs with the board contact RF Central for technical assistance RFX CMT II SD HD LAST REV AUG 2007 Page 14 of 30 Operator s Manual RF ExtremeCare 866 732 0113 CENTRAL 5 2 COFDM Modulator The COFDM modulator has been designed to take its input from the MPEG 2 encoder or directly from the front panel when ASI input mode is selected This transport stream is then modulated directly to the final 1 5 2 2 5 3 5 4 5 6 5 7GHz band as appropriate This method reduces the need for inter modulation products The COFDM modulator RF output is via the SMB connector This output is then fed into the power amplifier via the short RF cable The nominal RF output level of the modulator is 9dBm The modulator is automatically configured to match the data rate of the MPEG2 Encoder The modulator can support modulation schemes and data rates according to the chart which accompanies the customers equipment when shipped operationally the modulator is configured according to preset parameter sets as described in Appendix A There are no field replaceable parts on the COFDM modulator If a fault occurs with the board please contact RF Central for technical assistance 5 3 Power Amplifier
20. r can be read from this menu 6 9 3 Cable equalizer This feature allows the selection of an automatic equalizer on the digital SDI or ASI input designed to compensate for long cables up to 300 meters of high quality SDI cable The equalizer should be set to active for cables longer than 10 meters The equalizer is not designed for short cables and should be set to bypass for cables less than 10 meters i e when the CMT II is mounted on a camera 6 9 4 LCD Contrast This menu allows the contrast of the LCD display to be adjusted The AVY buttons are used to select the required contrast The Enter button then stores the value and returns to the top level of the Engineering menu 6 9 5 Audio input impedance Z The input impedance Z of the analog audio inputs can be set to 6000 or 50KQ through this menu RFX CMT II SD HD LAST REV AUG 2007 Page 22 of 30 Operator s Manual RF ExtremeCare 866 732 0113 CURRENT OPERATIONAL STATE aN Summary screen CONFIGURATION MENU v Select v ASI MENU E Y Enter to confirm ASI Selection H For full MPEG menu see sheet 2 RFX CMT Il OPS MENU MPEG ENCODER MODE Sheet 1 RFX CMT II SD HD LAST REV AUG 2007 Page 23 of 30 Operator s Manual RF ExtremeCare 866 732 0113 CENTRAL Select Alternative SD only MPEG MENU versions for HD SDI SD and HD E wi v v Select PID menu y Select PMT 512 y y y y Num
21. rking Distances The safe working distance from a transmitting antenna may be calculated from the relationship d Pr Gr D AT wW in which D safe working distance meters PT transmitter or combiner power output watts GR antenna gain ratio anti log gain dBi 10 power density watts square meter The RF power density value is determined by reference to safety guidelines for exposure of the human body to non ionizing radiation It is important to note that the guidelines adopted differ throughout the world and are from time to time re issued with revised guidelines For RF Central use a maximum power density limit of 1w m is to be applied when calculating minimum safe working distances Appendix A refers Important Note It must be remembered that any transmitting equipment radiating power at frequencies of 100 kHz and higher has the potential to produce thermal and athermal effects upon the human body To be safe a Operators should not stand or walk in front of any antenna nor should they allow anyone else to do so b Operators should not operate any RF transmitter or power amplifier with any of its covers removed nor should they allow anyone else to do so Worked examples Antenna ___Ffransmitter Power um Type est Gain Ratio aw law Tow sow ow gst f fis a5 RFX CMT II SD HD LAST REV AUG 2007 Page 5 of 30 Operator s Manual RF ExtremeCare 866 732 0113 CENTRAL 1 2 Maximum RF Power Dens
22. s Note after the Engineering menu has been accessed the CMT II will revert to the Ops menu after 30 secs if the Eng menu is not being navigated The RFX CMT II is configured using an LCD display and six push buttons These are arranged as four navigation buttons AY lt P plus Enter and Clear The Enter button is used to store the modified parameter in non volatile memory this parameter will then be used to configure the RFX CMT II and will also become the default value when next powered on The Cancel button can be used to exit a menu without storing the parameter in memory Various menu levels are provided to allow the operator to access the different hardware and operating parameters The layouts of the Operations and Engineering menus can be found at the end of this section The following paragraphs describe how each of the major functions are monitored and controlled 6 5 Initialization screen At switch on the status of the initialization is displayed If any errors are found with the initialization of the major functions Video Audio Encoder and Modulator an error message will be displayed During initialization the Status LED will be off 6 6 Summary Current Operational State and Status Warning screens The display screen during normal operation of the RFX CMT II indicates the Tx frequency Channel number or Manual frequency the current modulation mode FEC rate and guard interval Additional
23. tal 8 Pin Lemo Plug FGG 1B 308 CLAD62Z Pin Function Notes 1 OV Screen Analog 2 Ch1 balanced 3 Chi Switchable 4 Ch2 50k 600 Q 5 Ch2 6 Ov screen Digital 7 AES EBU 8 4 4 Power Connector 10 35V DC 18W Clip On power only This connector can be used to take power from the docked battery 5A Max to power external cameras if the CMT II is not docked directly to the camera or feed power into the CMT II and then power into the camera The power switch is used to control the CMT II only The power supply to the camera is always available from the battery interface or external power connector The camera on off switch should therefore be used to control the camera independently 4 Pin Lemo Plug FGG 1B 304 CLAD62Z Pin Function 1 OV 2 OV 3 12V 4 12V RFX CMT II SD HD LAST REV AUG 2007 Page 11 of 30 Operator s Manual RF ExtremeCare 866 732 0113 REMOTE 4 5 Remote Connector RS232 38400 Baud 8 bit 1 stop bit no parity 4 Pin Lemo Plug FGG 0B 304 CLAD62Z Function OV Tx Data out from unit Rx Data into unit OV U PON 15 In the version of CMT II described in this manual the feature of remote set up is not implemented RFX CMT II SD HD LAST REV AUG 2007 Page 12 of 30 Operator s Manual RF ExtremeCare 866 732 0113 5 MODULE DESCRIPTIONS The RFX CMT II contains four circuit board assem
24. we recommend that the following equipment checks be made 7 1 The RFX CMT II transmitter Check that the Camera Adapter is securely fastened to the camera Check that the batteries to be used are fully charged and that an emergency spare battery is available and fully charged If the camera is to be used with a cable connected antenna ensure that the cable is in good condition paying particular attention to the quality of the end connectors and their assembly status If extension cables are required make sure that the cable connectors are compatible or that the necessary back back connectors are to hand To enable the frequency to be checked without transmitting RF power the RFX CMT II can be powered up with the PA disabled see paragraph 6 2 The current operational set up of the transmitter can be checked according to paragraph 6 6 7 2 The Receiving Equipment The CMT II transmitter may operate in conjunction with a variety of RF Central receivers including the RMR RMR II PMR PMR II RMRT RMRT D and the RMR X6 six way diversity system When used with the CMT II transmitter the RF Central receiving equipment produces two analog audio channels duplicated as one stereo AES3 the third and fourth audios are non functioning at the receiver when used with the CMT II Tx Video outputs include SDI and composite video outputs later RF Central receivers also have an ASI output and component video Y C If extension cables are necessary
25. working properly Checking the system making necessary adjustments and taking corrective actions ahead of time will pay off later when setting up at the remote site RFX CMT II SD HD LAST REV AUG 2007 Page 28 of 30 Operator s Manual RF ExtremeCare 866 732 0113 8 APPENDIX A MPEG Encoder Parameter Sets Note The following parameters are typical for the transmitter and are issued for guidance only Some transmitters may have different configurations according to individual customer requirements Set Part Number Rate COFDM MPEG Video Video Encoding Audio Delay Mbit s Mode Rate Format Mode Rate Setting HD Mbit kbit 1 PBMP 3000 17 564 16 QAM MP H14 L 15 00 1080i Field 384 Low 5002 2A C3 4 G1 16 Intraslice 25 29 fps Intraslice 2 PBMP 3000 18 096 64 QAM MP H14 L 16 00 1080i Field 384 Low 5011 10 C1 2 G1 32 Intraslice 25 29 fps Intraslice 3 PBMP 3000 23 418 64 QAM MP H14 L 21 00 1080i Field 384 Low 5002 31 C1 2 G1 32 Intraslice 25 29 fps Intraslice 4 PBMP 3000 18 096 64 QAM MP H14 L 16 00 720p Field 384 Low 5012 10 C1 2 G1 32 Intraslice 50 59 fps Intraslice 5 PBMP 3000 18 096 16 QAM MP H14 L 16 00 1080i Frame 384 Std 5006 0A C3 4 G1 32 Intraslice 25 29 fps Intraslice 6 PBMP 3000 18 096 64 QAM MP H14 L 16 00 1080i Frame 384 Std 5013 10 C1 2 G1 32 Intraslice 25 29 fps Intrasli
26. z in some modes MPEG 2 Video ISO IEC 13818 2 MPEG1 Layer II Linear PCM SMPTE303M 2 ch 16bit ch Selectable to less than two frames minimum Tx to Rx SDI HD SMPTE 292M 299M SDI SD SMPTE 259M 272M Analog Composite and YUV Y C Component video Digital HD SDI embedded Digital SD SDI embedded 1 x AES3 stereo Analog 1 x stereo 2 x mono inputs mic line selectable 75 and 100 Color bars audio test tones SD video COU Sa DVB ASI transport stream 188 204 10 35VDC Transmitter normally mounts between battery and battery interface plate Cro 160 x 130 x 54mm ISL 0 95kg including antenna Temperature 20 to 50 C Altitude 4500m Humidity 95 humidity long term RFX CMT II SD HD LAST REV AUG 2007 Page 9 of 30 Operator s Manual RF ExtremeCare 866 732 0113 4 CONNECTOR PIN OUTS REX CMT Il SD HD COMPONENT COMPOSITE VIDEO HD SDI ASI 4 1 Video BNC connector 75Q BNC connector Dependant on transmitter user configuration used for HD SDI SD SDI Composite NTSC ASI 4 2 Video Multiway Connector Dependant on transmitter user configuration used for SD Component video 6 Pin Lemo Plug FGG 1B 306 CLAD62Z Pin CVBS YC YUV 1 OV Y Ov Y Ov 2 CVBS Y Y 3 C 0v U Ov 4 C U 5 V Ov 6 V RFX CMT II SD HD LAST REV AUG 2007 Page 10 of 30 Operator s Manual RF ExtremeCare 866 732 0113 SEN CMT II SD HD 4 3 Audio Connector Analog or AES3 digi
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