User`s Manual
Contents
1. 3 2 HPA and have minimum DC losses Careful attention must be paid to properly heat sink the remotely located HPA Monitoring and control of the CMT R can be done through the front panel keypad and LCD display Some controls such as setting user attenuation turning on user data or encryption changing video group parameters and others require the use of a PC with GMS s Windows control software interfaced through the rear RS 232 or USB connectors see section 4 1 Stand Alone Wireless Camera Transmitter The transmitter can be easily removed from the rack to use as wireless camera transmitter Before taking the transmitter out of the rack it is necessary to reduce the User Attenuation value in order to bring the transmitter up to full power Establish communication with the transmitter using the PC software application control using a serial cable or USB cable connected to the appropriate rear connector see section 4 0 for connector locations Once communication is established go to the Others screen which is under the Special Setup menu under the Configuration menu in the main window Note the current value in the Set User Attenuation Step Upper Limit text box You will need to set it back to this value before re installing the transmitter Change this value to 0 for no attenuation Save the settings and exit the program Turn off both CMT R switches Tx Pwr and HPA Pwr Pull the CMT R all the way forward ou2. Front Panel Keypad 8 LCD Most control and monitoring of the CMT R can be done with the 4 button keypad and the LCD Full operation is detailed in the CMT manual 100 0071 as stated above 100 M0076X1 9 of 12 www cobham com gms HPA PWR SW Front Panel Keypad amp LCD CMT R CONFIGURABLE MESSENGJ R TRANSMITTER TX PWR SW FIGURE 4 CMT R FRONT PANEL 5 0 Specifications Connectors RF Output N F Video Composite BNC F Video SDI HD SDI BNC F ASI Out BNC F Audio 3 Pin XLR F 2 audio connectors RS 232 DB 9 F Pin 2 Tx Pin 3 Rx Pin 5 GND User Data DB 9 Pin 2 Tx Pin 3 Rx Pin 5 GND Pin 6 Fwd Pwr Det Pin 7 Rev Pwr Det USB Type B Jack DC Power PTO 4P M Jack PTO2E 12 4P Pin A amp B Pin C amp D GND AC Power 3 Prong module 10 Amp fused 85 256 VAC 47 63 Hz 10 of 12 www cobham com gms 5 2 5 3 5 4 5 5 5 6 5 7 Control RS 232 3 wire interface Tx Rx Gnd USB 1 0 RCU A remote portable control unit Optional Wireless command link available A MS Windows based control application running on XP or Windows 2000 operating systems is used to control the transmitter C OFDM RF Output Output Frequency 1 to 7 GHz In Bands RF Output Power Up to 15 W Model Dependant AC Power 120 VAC lt 1 amp DC Power DC Voltage 12VDC 9 15 V range 9 9 11 amps model and video input dependant DC Voltage 28VDC Physical Dimensions
3. for SD and 1 485 Gbps for HD ASI Out J1 A female BNC connector is provided for DVB ASI transport stream output 75 ohm impedance The output bit rate is 270 Mbps This transport stream does not include the SI tables User Data or AES encryption which is added later in the processing chain This port is also useful for troubleshooting The ASI stream output from this port can be taken directly into the ASI input of a decoder showing the status of the encoder bypassing any RF processing 4 1 10 Comp Video J3 A female BNC connector is provided for composite video input 75 ohm impedance In order for the transmitter to recognize composite video it must be set for SD standard definition mode by selecting the correct Video Group from the front panel of the CMT R or using the PC control software through the RS 232 or USB ports 100 M0076X1 8 of 12 www cobham com gms J5 Audio 1 12 HD SD SDI IN 16 User Dat ETA J4 Audio 2 SEIN J1 ASI OUT 17 RS 232 JO RF Out 13 Composite Video J10 DC PWR 18 USB FIGURE 3 CMT R REAR PANEL 42 Front Panel Switches CMT Front Panel Keypad amp LCD Display 42 1 TXPWR Switch This switch controls the main power to the CMT R providing power to the internal fans and the transmitter 422 HPAPWR Swtich This switch enables the power to the HPA The HPA will not turn on until it receives the lock signal from the transmitter regardless if the HPA PWR switch in enabled 423
4. 16 W x 16 94 D x 3 5 H 40 64 cm W x 43 03 cm D x 8 89 cm H Width with handles 18 658 47 391 cm Weight 15 4 lbs 6 99 kgs without CMT transmitter Environmental Operational Temperature 10 to 70 C Humidity Up to 100 non condensing 100 0076 1 11 of 12 www cobham com gms APPENDIX A Al CABLE EXTERNAL BREAKOUT NOTES 1 1 REFERENCE BOM 780 AI0056 FOR PART REFERENCE DESIGNATORS REVISIONS REV DESCRIPTION DATE APPROVED E0676 INITIAL RELEASE 12 14 06 APPROVED AN LABEL THE CABLE ASSEMBLY WITH 780 AI0056X1 USING BEST COMMERCIAL METHOD APPROXIMATELY WHERE SHOWN AND COVER WITH CLEAR SHRINK WRAP 1 3 REFERENCE SHEET 1 FIGURE 1 FOR CABLE WIRING DIAGRAM 1 4 REFERENCE SHEET 2 FOR CABLE ASSEMBLY INSTRUCTIONS gcc CIG LIGHTER dO 16AWG CSA TYPE SPT 2 16AWG CSA TYPE SPT 2 FIGURE 1 16AWG CSA TYPE SPT 2 ENG TECH T GIOTTA COBHAM DWG TITLE DRAWN T GIOTTA GMS Products AI CABLE CMT R 12VDC PWR EXTERNAL WITH CIG LIGHTER END ENG SIZE DATE DWG NO REV 12 of 12
5. AC power This is a universal AC power supply which can handle the voltage range from 85 to 256 VAC at 47 to 63 Hz DC Power J10 A standard 4 PTO connector PTO2E 12 4P is provided for DC voltage input Pins A amp B are used for and pins C amp D are used for ground RS 232 17 A 9 pin female dB connector is provided for interfacing the CMT R to the PC using GMS s PC Windows application control software A standard 9 pin serial cable can be used between the PC and the CMT R USB J8 A USB 1 0 type B jack is provided and serves the same purpose as the RS 232 connector above since most new computers only contain USB ports Special USB drivers are shipped with GMS s PC control software that need to be loaded before using this port The transmitter should be fully booted and initialized before plugging in the USB cable between the PC and the CMT R This port is not active until the transmitter is fully booted and initialized User Data J6 A 9 pin female dB connector is provided for user data If the transmitter is equipped and setup to handle user data the serial data can be injected into this port Audio Connectors J4 amp J5 Two 3 pin XLR F connectors are provided to handle the balanced audio 1 and audio 2 input channels The audio signal can be set for line or mic levels HD SD SDI IN 12 A female BNC connector is provided for SD SDI or HD SDI video input streams 75 ohm impedance The input bit rate is 270 Mbps
6. Configurable Messenger Transmitter High Power Rack Mount Kit CMT R MISSI REGIA TRANSMITTER v 0100 Cobham Surveillance GMS Products 1916 Palomar Oaks Way Ste 100 Carlsbad CA 92008 100 M0076X1 T 760 496 0055 05 22 09 F 760 496 0057 Table of Contents UE enin arvede 4 20 E 5 Key TG vvs 5 30 Theory of Operation iid ditti uei AU ME LUND EM EU 5 Sch Rack Mo nt AGE 5 3 2 Stand Alone Wireless Camera Transmitter 6 40 Hardware Overview a 8 41 FPS re 8 SEET BI Output D Gara 8 GEO S u unus had od cote NRS 8 4 13 DEP TN u quud aa Reid c cd PERI HO RDUM UH Ge 8 entere EEE EE EN 8 115 USB J8 P E A 8 MV 8 4 1 7 Audio Connectors vvs 8 WR MEN reser 8 ATI NN 8 2 T0 Comp E 8 4 2 Front Panel Switches CMT Front Panel Keypad amp LCD Display 9 422 1 TXPWR NG 9 222 HPATPWR stp EUH RESUME HORQN UAE UELLE USER CONCURRIT 9 223 For Panel Keypad amp LCD n cL iia 9 5 0 ZEIEN 10 S MEE Ve eo EU 10 cM MEE dem 11 5 3 COFDM RF Nea 11 54 NNN 11 e E DEE EE 11 s MEME ce NERE EE NEO 11 Su NN 11 100 M0076X1 2 of 12 www cobham com gms List of Figures FIGURE 1 WITH FRONT LID OPEN asas 7 FIGUR
7. E 2 CMT WIRELESS CAMERA TRANSMITTER 8 FIGURE CMT R REAR E E 9 FIGURE 4 CMT R FRONT TE 10 Appendix APPENDIX A AI CABLE EXTERNAL FER 12 100 M0076X1 3 of 12 www cobham com gms 1 0 Acronyms This section lists and describes the various acronyms used in this document Name 16 QAM 64 QAM A V AES ASI BDC COFDM CVBS Y CMT D C DRL DVB T FEC ENG GUI HD HPA I O Kbaud Kbps Mbps MER MPEG MSR NTSC PAL QPSK RCU RF SDI S N THD UAV UGV VDC 100 M0076X1 Meaning 16 state Quadrature Amplitude Modulation 64 state Quadrature Amplitude Modulation Audio Video Advanced Encryption System 32 bit Asynchronous Serial Interface Block down converter Coded Orthogonal Frequency Division Multiplexing Composite video Luminance with S video Chroma video Configurable Messenger Link Configurable Messenger Transmitter Down Converter Data Return Link Digital Video Broadcasting Terrestrial Forward Error Correction Electronic News Gathering Graphical User Interface High Definition High Power Amplifier Input Output Kilobaud per second Kilobits per second Megabits per second Modulation Error Rate Moving Picture Experts Group Messenger Smart Receiver National Television System Committee Phase Alternation Line Quadrature Phase Shift Keying Remote Control Unit Radio Frequency Receiver Serial Digital Interface Signal to Noise Ratio Total Harmonic Distortion
8. Transmitter Unmanned Aerial Vehicle Unmanned Ground Vehicle Volts Direct Current 4 of 12 www cobham com gms 2 0 Introduction 2 1 The CMT R is a rack mount kit that converts the GMS s wireless camera Configurable Messenger Transmitter CMT into a high power rack mounted COFDM transmitter Both the CMT R s front and top panels are hinged for easy installation and removal of the CMT This allows the CMT to be used both as an on camera transmitter as well as a high power rack mounted transmitter The CMT R allows the CMT to be powered with 28 VDC 12 VDC or 85 256 Q 47 to 63 Hz Model dependant The CMT s local control panel can be accessed through the CMT R s front panel allowing local control of the transmitter Additionally remote control is available via a USB port a RS 232 port an RCU remote control unit or optional wireless command link The CMT R adds support for either internally or externally mounted High Power Amplifier HPA Remotely mounting the HPA at the antenna location minimizes RF losses and provides maximum power to the Antenna DC power for the external PA can be supplied through the coax cable by the CMT R This kit includes two Bias Ts one for each end of the coax supplying RF and power to the remote HPA A separate power control switch is provided to enable the HPA The CMT provides a signal that keeps the HPA off until the CMT s output signal is enabled and stable Principal applications include Ele
9. ctronic News Gathering ENG sports helicopter links UAV UGV applications and mobile and portable AV applications Key System Features CMT Quick Release Mount Internal or External Mast Mount High Power Amplifiers AC amp DC Operation Rack Mountable W Slides 3 0 Theory of Operation 3 1 The CMT transmitter documentation is in manual 100 M0071 which is on line at GMS web site WWW GMSINC COM The manual documents in detail the operation of the transmitter the use of the PC control application software and the connectors It contains valuable information which will help in getting the most use out of the CMT R Rack Mount Operation The CMT R rack consists of two switches with built in LED indicators on the front panel along with the interface connectors located on the rear panel The PWR switch enables the voltage to the CMT transmitter and the internal fans The HPA PWR switch enables the voltage to the HPA The CMT transmitter needs to be fully initialized and PLL locked this takes approximately 30 seconds before it sends an active high TTL signal to the HPA turning it on with the HPA PWR switch enabled DC voltage is provided on the same RF output coax cable on units with remotely located HPA This configuration requires a DC extractor on the HPA end The coax cable must be capable of handling the large current drive approximately 8 to 10 amps required by the 100 M0076X1 5 of 12 www cobham com gms
10. t the rack see Figure 1 Undo the quick release screws on the top cover and swing it up and out of the way Unscrew the two thumbscrews on the front panel and let it roll forward giving you easily access to the transmitter Ensure to disconnect all cables before releasing it from the battery mount plate Anton Bauer or IDX located on the bottom of the rack The CMT can now be used as a stand alone wireless HD SD camera transmitter see Figure 2 The installation is the reverse of the removal process Just be sure to set the User Attenuation back to the factory setting value otherwise the HPA may be overdriven causing the C OFDM signal to go into compression causing poor performance In addition the three position CMT power switch should be left in the ON external power setting 100 M0076X1 6 of 12 www cobham com gms CMT CMT with Anton Bauer Battery FIGURE 2 CMT WIRELESS CAMERA TRANSMITTER 100 0076 1 7 of 12 www cobham com gms 4 0 Hardware Overview The connectors and switches of the CMT R are detailed below and shown in Figure 3 and Figure 4 4 1 Rear Panel Connectors 4 1 1 RF Output JO The CMT R uses a female N type bulkhead connector for its Ouput port Note This port should be properly terminated with an antenna or attenuator before enabling the power to the HPA Damage to the unit could occur without the proper termination AC Input 11 A three prong module connector is provided for
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