Your digital solution for wireless TV production and terrestrial news gathering. 6GHz CARRY-CODER II User Manual Manual Part Number 6051412900 Rev - Specifications are subject to change without prior notice. This document contains confidential information and is intended for customer use only. It cannot be duplicated without prior authorization from BMS. Broadcast Microwave Services, Inc.
6GHz CARRY-CODER II User Manual 6051412900 Rev -
GLOSSARY 16QAM Quadrature Amplitude Modulation (16 states) 64QAM Quadrature Amplitude Modulation (64 states) ATSC Advanced Television Standard Committee COFDM Coded Orthogonal Frequency Division Multiplex CVBS Composite Video Baseband Signal DCE Data Communication Equipment DVB Digital Video Broadcasting DVB-T Digital Video Broadcasting for Terrestrial TV EMC Electro-Magnetic Compatibility EU European Union GOP Group Of Pictures MPEG Moving Pictures Engineering Group PIN Personal Id
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CONTENTS 1. 2. 3. OVERVIEW ............................................................................................................................................... 1 INFORMATION TO USER....................................................................................................................... 3 GETTING STARTED ................................................................................................................................ 5 3.1 Installing the Transmitter on the Camera 5 3.
WARNING! RF RADIATION EXPOSURE HAZARD This warning is provided by Broadcast Microwave Services (BMS) Inc. for safety purpose. The following information help to reduce the risk of RF exposure hazard. FCC Limit of RF Exposure According to Federal Communication Commission (FCC), the Maximum Permissible Exposure (MPE) for FR radiation has been set to 1.0 mW/cm2 for the 6 GHz CarryCoder II with 190 mW output power (OET Bulletin 65).
Estima te d RF Exposure for 6 GHz Carry-Code r II 5.0 Power Density, mW/cm^2 4.0 3.0 2.0 1.0 0.0 0 100 200 300 400 500 Dis tance , cm Figure 1 Summary In order the keep the RF exposure within the FCC limit, it is necessary to maintain the safe distance from the antenna.
OVERVIEW Wireless digital communications is increasingly used across the teleproduction community, especially by organization covering news and sports. The technology of DVB-T is generally adopted because of interoperability and reliable performance provided by MPEG2 compression and COFDM. BMS offers its expertise in the Carry-Coder product family with the high-power Carry-Coder II portable transmitter and companion COFDM integrated receiver-decoder, the De-Coder II.
Carry-Coder II Y/CVBS In U In V In AL In AR In MPEG2 Encoder (Audio/Video) DATA Multiplexer COFDM Modulator RF UpConverter and Amplifier RF Output SDI In RS232 (DATA) Control Unit Remote +12 to 32 VDC Input Loop Through Power Supply Management The CARRY-CODER II is comprised of the following sub-systems: • • • • • An MPEG-2 Encoder (1 video channel + 2 audio channels) compliant to ISO/IEC 13818 (MP@ML). A Data Multiplexer.
Changes or modifications not expressly approved BMS, Inc. could void the user's authority to operate the equipment. INFORMATION TO USER This device complies with Part 15 of the FCC Rules. Operation is subject to the following two conditions: (1) This device may not cause harmful interference, and (2) This device must accept any interference received, including interference that may cause undesired operation.
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GETTING STARTED Installing the Transmitter on the Backpack • • • • • • Orient the CCII so that it will mount onto the backpack with the Antenna facing up. Align the three mounting pins on the back of the CCII with the receptacles on the backpack. Slide the CCII into to the receptacle until it is locked in place. No orange will show from under the latch. Use the belt to further secure the CCII in place.
Controlling the CARRY-CODER II Transmitter Control Unit Features • • • • • • • • • The CARRY-CODER II control unit is designed for the convenience of the user. The control unit can be attached or disconnected at any time. Easily readable four line display. Operator navigation of menu with four intuitive directional buttons. Operational command entry using the button. Display includes status icons at right portion of top line. Text menu line one displays operating frequency.
CARRY-CODER II Transmitter Operating Mode Configuration NOTE: Most users will operate the system in mode. The mode provides user control of certain DVB-T parameter settings.
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OPERATING INSTRUCTIONS Start-Up Indications The CARRY-CODER starts with display showing the status of the system During system initialization, the CARRY-CODER II goes through self-test of its MPEG-2 encoder, COFDM modulator and RF sections. System initialization 10 seconds and will display as follows: BMS Inc. CarryCoder 2 Freq Agile 6425 – 6526 MHz Software Ver. 2.01 Resetting / At the completion of the initialization process, the display should look like this: 6431.25 MHz FREQUENCY 6431.
Carry-Coder II Operating Menu Structure FREQUENCY 6431.25 MHz RF OUTPUT POWER off low mid high max ROBUSTNESS low mid high expert RECALL CONFIGURATION 1 2 3 4 5 6 7 8 9 default SAVE CONFIGURATION 123456789 VIDEO INPUT CVBS YUV SDI ASI VIDEO MODE PAL NTSC AUDIO INPUT analog SDI AUDIO LEVEL LEFT -9--------0+++4 AUDIO LEVEL RIGHT -9--------0++++4 DATA PORT BAUD RATE 1.2 4.8 9.
CARRY-CODER II EXPERT Operating Menu Structure Video bitrate 4.
Changing Operator Menu Parameter Values When changing an operating parameter, line 2 describes the parameter and line 3 offers the available choices: RF OUTPUT POWER OFF LOW MID HIGH MAX The cursor (underscore) shows that the transmitter output is switched off.
Setting Transmitter Operating Frequency CARRY-CODER II Using Direct Frequency Entry The RF frequency is set as follows: 6454.25 MHz FREQUENCY 2454.25 MHz Ψ ▌▌ ▌▌ The frequency display is expressed in MHz with 250 kHz tuning steps. The frequency value corresponds to the center of the 8 MHz RF channel that is used for transmission. If the user tries to enter a value which is not in the operating frequency range, an “Out of range” message is displayed and the current frequency value is not changed.
Setting Transmitter Output Power The RF power is set through the following menu: RF OUTPUT POWER off low mid high max The following table gives the RF power (real average COFDM power) corresponding to each setting, accompanied by the resulting power supply consumption.
Mode (TX Robustness) Preferred applications LOW Studio MID News, sports, entertainment HIGH Mobile & airborne transmission (with walls or buildings in the path) Characteristics Short transmission range. Maximum video quality. Medium transmission range. High video quality. Long and/or difficult transmission. Normal video quality. The operator can define specific operating parameters (compression and transmission) via the EXPERT mode.
The operator can choose: • • • • CVBS : Composite Video Baseband Signal YUV : Component video SDI: Serial Digital Video ASI: Transport If there is no signal on the selected input, the CARRY-CODER II displays a “No video” warning message and will not transmit. The video input standard is set through the following menu.
Configuring Transmission Privacy The CARRY-CODER II offers the choice of encrypting the transmitted signal in order to ensure the privacy of the link. This feature is controlled through the following menu: ENCRYPTION OFF ENTER PIN This operation uses a 6 digit encryption code. Both the transmitter and the receiver must have the same PIN encryption code in memory. If not, the DC II receiver will indicate .
USING EXPERT MODE The CARRY-CODER II has two modes of operation. 1. The NORMAL mode provides the operator with control of system functions that are needed in routine portable camera situations. Section 3 of this manual describes these functions, including three factory preset configurations. 2. The EXPERT mode enables the operator to selectively adjust key (audio and video) compression and COFDM transmission parameters.
GOP Structure GOP STRUCTURE I IP IBP IBBP 422IBBP This parameter controls the structure of picture groups used in the MPEG-2 encoding process. These groups are based on three possible picture types: • • • I: Intra-frames (completely encoded). P: Predicted-frames (using motion estimation). B: Bi-directionally estimated frames (using motion estimation). This parameter has a direct affect on video encoding delay.
Guard Interval GUARD INTERVAL 1/32 1/16 1/8 1/4 The Guard Interval corresponds to the idle time that exists between each COFDM symbols, in order to avoid inter-symbol interference in a Multipath environment. The Guard Interval helps prevent the receiver from being affected by signal echo interference by allowing time for echoes to settle before the active symbol is sent. Guard Interval is expressed as the ratio of the idle time divided by the useful part of the COFDM symbol.
PIDs You can find some information about Tables and PIDs in Annex B. The contents of the Transport Stream are defined by information tables that describe the organization of the transmitted data in addition to the video and audio content. These tables along with video, audio and private user data are transmitted in packets. A Packet Identifier (PID) number is used to distinguish between packets. PIDs may have values from 0 to 8191.
INPUT/OUTPUT CHARACTERISTICS Composite Video (CVBS) Type Systems Composite Video Baseband Signal (CVBS) NTSC 525 lines / 60 Hz / Fsc = 3.58 MHz PAL 625 lines / 50 Hz / Fsc = 4.
RF Output The versions CARRY-CODER II are available for specific frequencies. Please refer to the CARRY-CODER II serial ID for information on the operating frequency for the unit. CARRY-CODER II FREQUENCY VERSION S-Band C-Band Frequency Range 1.99 to 2.50 GHz 4.4 -4.7 GHz 4.7-5.0 GHz 6.425-6.
WARRANTY AND RETURN TO FACTORY The CARRY-CODER II is warranted for a 2 years period, starting from delivery date. In case of CARRY-CODER II failure, please use the following process: • First have a look at the troubleshooting section of this manual in order to see if an immediate solution can be found. • Before contacting BMS with questions about units, be sure to have the following information with you so we will be better able to help you.
CONTACT INFORMATION Broadcast Microwave Services, Inc. Phone: 1.858.391.3050 Fax: Shipping address: 1.858.391.3049 12367 Crosthwaite Circle Dock 10 Poway, CA 92064 Website: http://www.bms-inc.com Email: support@bms-inc.com sales@bms-inc.
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ANNEX A: COFDM Modes Characteristics The main COFDM modulation parameters are: • • • • Number of sub-carriers (1705) Guard interval (GI) duration between COFDM symbols Constellation scheme used for individual sub-carrier modulation Data redundancy code rate used for error correction The transmission robustness mainly depends on constellation scheme and code rate. The following table gives the useful transmission bit rate for each COFDM mode.
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ANNEX B: Tables and Packet Identifiers (PIDs) The contents of the MPEG2 Transport stream are defined by ETSI EN 300 468, Digital Video Broadcasting (DVB); Specification for Service Information (SI) in DVB Systems and ISO 13818-1. These documents define the information tables that describe the organization of the transmitted data in addition to the video and audio content. These tables along with video, audio and private user data are transmitted in packets.
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PIN OUT INFORMATION for 6GHz Carry-Coder II System Frequency 2 GHz 4 GHz Connector Mating Connector Mating Cable Pin 6 GHz 6051412900 Rev - A +11 TO 32 VDC 2.
Mating Connector Mating Cable Pin J6 J10 6051412900 Rev - 1 AUDIO GROUND 2 LEFT AUDIO OUTPUT + 3 LEFT AUDIO OUTPUT - 4 RIGHT AUDIO OUTPUT + 5 RIGHT AUDIO OUTPUT - 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 NC PC STATUS PC COMMAND NC GROUND RC BUSY NC RC SENSE +5 VDC NC NC NC NC NC NC Connector TA5M Mini XLR BMS p/n 210070951 Cable BMS p/n 7616201000 Camera Mount 7616201010 Back Pack For Custom Cable Use: Tefzel 4 Conductor 22 AWG Shielded or Equivalent Connector DA-15P BMS p/n 210052001 Cable BMS
Mating Connector Mating Cable Pin J11 A +Vp IN B -Vp IN C CHASSIS GROUND Connector PTO6E-8-3P BMS p/n 210004601 Cable BMS p/n 7314189060 (HCII) Broadcast Microwave Services, Inc. – 12367 Crosthwaite Circle – Poway, CA 92064 Phone: 800-669-9667, 1-858-391-3050 - Fax: 1-858-391-3049 Email: support@bms-inc.com Web: www.bms-inc.
