CHANNELMASTER TX7 Portable Microwave Transmitter User Manual NUCOMM PUBLICATION: M01-0029-00A, REV 1.
Revision 1.03 FCC STATEMENT This equipment has been tested and found to comply with Part 74.637 (a) (2) of the FCC Rules and Regulations. Any unauthorized changes or modifications not expressly approved by Nucomm, Inc. could void the user’s authority to operate the equipment, and invalidate the equipment’s warranty. CAUTION! RISK OF ELECTRICAL SHOCK. DO NOT REMOVE EQUIPMENT COVERS. • Do not remove any equipment covers. • Refer servicing to qualified technicians only.
Revision 1.03 Proprietary Information and Disclaimer Notice All information and graphic images contained within this manual are the sole property of Nucomm, Inc. and are issued in the strictest of confidence. This material may not be reproduced, stored, copied, or converted in any form, nor shall it be disclosed to others or used for manufacturing or any other purpose without the written permission of an authorized Nucomm representative. Nucomm, Inc.
Revision 1.03 Technical Support Information Technical Support personnel are available to extend technical assistance to customers while installing, operating, or troubleshooting Nucomm equipment. Please have your model number and serial number available. Telephone During Nucomm business hours, 8:30am - 5:30pm EST (-5 Hours, GMT), call: US ......................................................908-852-3700 International........................................
Revision 1.03 TABLE OF CONTENTS 1. PRODUCT DESCRIPTION ...................................................................................................................1-1 Introduction.........................................................................................................................................1-1 Model Numbering Scheme ................................................................................................................1-2 FEATURES ...................................
Revision 1.03 5.8.1 AUDIO.......................................................................................................................................5-12 5.8.2 VIDEO .......................................................................................................................................5-13 5.8.3 SERVICE ..................................................................................................................................5-13 5.9 System Menu Selections ..................
Revision 1.03 DOCUMENT REVISION HISTORY Date Revision Modified by Description February 19, 2009 February 20, 2009 1.0 1.01 JB MH Initial version. Edited Table 3-1 and Chapter 3. March 10, 2009 1.02 JB April 1, 2009 1.03 JB Minor revisions. Edited menu description, US Frequency Plan band range info in Ch 3. Added section on “COFDM Guidelines.” Nucomm makes every effort to ensure our documentation is accurate, and as complete as possible.
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Revision 1.03 1. PRODUCT DESCRIPTION 1.1 Introduction Nucomm’s ChannelMaster TX7 is a Digital-Analog Portable Microwave Transmitter. The tripod mounted Microwave Transmitter System is designed to operate in any specified band in the 1.00 GHz to 15.5 GHz frequency range. Each unit is field programmable and configurable to meet a wide range of customer requirements. The TX7 may be configured for dual band or tri-band operation. The ChannelMaster TX7 is designed to be an extremely flexible system.
Revision 1.03 1.2 Model Numbering Scheme Given the model number, a unit's configuration can be determined using the following: AAAAA – CMTX7 – BB – CCC – YZ Options Specified Frequency Plan Power Output Model Generalized Frequency Band Designator Where: AAAAA = mean frequency band center in GHz rounded to the closest GHz. This number is then multiplied by 10. For multiple bands, each center frequency designation is separated by a backslash "/".
Revision 1.03 Thus the above model number be similar to: 20/70-CMTX7-L5/E1.5-CCC-YZ CCC = Nucomm assigns a frequency plan number for each unique frequency channel combination. Contact your Nucomm representative for further information. YZ = Miscellaneous options as listed in the table below. The model number is formed by appending as many letter codes as appropriate.
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Revision 1.03 2. FEATURES This chapter describes the features of the ChannelMaster in detail. The CMTX7 supports an extensive range of popular digital video input formats, including SDI, ASI, and optional Firewire (IEEE1394). The CMTX7 can also be used to transmit 70MHz IF input signals containing audio and video that have been modulated by other equipment. Nucomm ChannelMaster TX7 2.
Revision 1.03 Table 2-1: ChannelMaster TX7 Technical Features and Benefits Technical Feature Benefit HD and SD video microwave link User friendly menu driven interface Pushbutton controls Preset settings buttons Advanced digital transmission options (COFDM or VSB digital modulation) using any system video input type. ASI input – HD and SD MPEG2 video transport stream. SDI input - HD and SD video transport stream.
Revision 1.03 2.2 System Functional Block Diagram The figure below shows a functional block diagram of the ChannelMaster CMTX7.
Revision 1.03 2.3 System Chassis Features The ChannelMaster TX7 features a robust, weather-resistant housing design to withstand rough handling in the field. The ChannelMaster TX7 includes video and audio processing boards, power supply, 70 MHz modulator, power amplifier, up-converter, and low noise frequency synthesizer enclosed in a rugged enclosure, with all input jacks and user interface controls on the front panel. The system chassis is typically tripod mounted during use. 2.
Revision 1.03 2.9 Multi-band Microwave Output Nucomm’s ChannelMaster transmitters are available in single, dual, and multiband models. An antenna (supplied separately) can be either mounted directly to the transmitter using available mounting adapters or it can be remotely mounted and connected to the transmitter via standard RF cables with N-Type connectors.
Revision 1.03 o A 16-character programmable ID (can be placed in the Vertical Interval and Gen-locked to the incoming Video signal) • • • 2.16 Options Dual front panel XLR connectors with phantom power for mic inputs. Front panel Firewire connector for SD or HD MPEG2 digital input stream. High Power Amplifier enabling enhanced MER. 2.17 Accessories ChannelMaster TX7 transmitters ship with AC & DC power cords and manual. 2-6 2.
Revision 1.03 3. SPECIFICATIONS AND FREQUENCY PLANS RF Performance: Tuning step size: ..................................... 250 kHz (US), 100 kHz (International) 70 MHz input:........................................... –10 dBm to 0 dBm (75 Ω) Frequency stability: ................................. ± 5 ppm (.0005%) Power Output Standby mode: ................................... No RF output Normal mode: ....................................
Revision 1.03 Modulation Modes Modulation 1: .......................................... COFDM (DVB-T) Carriers: ............................................... 2K Constellation: ....................................... QPSK, 16QAM, 64QAM Code Rate:........................................... 1/2, 2/3, 3/4, 5/6, 7/8 Guard Interval: ..................................... 1/32, 1/16, 1/8, 1/4 Bandwidth: ........................................... 6 MHz, 7 MHz, and 8 MHz Modulation 2: ............................
Revision 1.03 FM Modulator: Video Video:................................................... 525/625 lines NTSC/PAL field selectable Composite input:.................................. 75Ω, 1Vp-p, NTSC/PAL SDI input: ............................................. ANSI/SMPTE 259M Level C 270Mb/s, 525/626 Component Video Deviation:................................... 1V p-p for ± 4 MHz deviation 0.75 V p-p for ± 3 MHz deviation (Selectable) Video Emphasis:..................................
Revision 1.03 System: Video Presence: .................................. Remote Standby/Test Generator Selectable Test Generator(Dynamic): ................... SMPTE CB(NTSC)/100% CB(PAL) 16 Character ID(Match SDT Service name 1KHz Tone/Pulse ASI: ...................................................... Rate converted from 0mpbs-Max modulation Rate PCR Retime stamp Encryption: ...........................................
Revision 1.03 Physical Characteristics: Size (Low Pwr Unit): ............................... 4.89" (12.42 cm) x 7.5" (19.05 cm) x 12.0"(30.48 cm) Size (Hi Pwr Unit): ................................... 5.2" (13.21 cm) x 7.5" (19.05 cm) x 12.0"(30.48 cm) Weight: Single-Band, No Shroud (typ.): .......... 15.00 lbs (6.80 kg) Dual-Band, No Shroud (typ.):............. 16.00 lbs (7.26 kg) Single-Band, Shrouded (typ.):............ 15.50 lbs (7.03 kg) Dual-Band, Shrouded (typ.): .............. 16.50 lbs (7.
Revision 1.03 3.1 Frequency Plans (USA) The standard US frequency plans apply to all units sold into markets covered by the FCC. Frequency plans for all systems sold into non-US markets are individualized to meet specific customer requirements and licensing restrictions, as specified at the time of purchase.
Revision 1.03 2 GHz (12 MHz) (Frequency Range 2,025 MHz – 2,500 MHz) Channel 1 1 1 2 2 2 3 3 3 4 4 4 5 5 5 6 6 6 7 7 7 8 8 8 9 9 9 10 10 10 Offset – 0 + – 0 + – 0 + – 0 + – 0 + – 0 + – 0 + – 0 + – 0 + – 0 + Receive Frequency MHz 2,028.50 2,031.50 2,034.50 2,040.50 2,043.50 2,046.50 2,052.50 2,055.50 2,058.50 2,064.50 2,067.50 2,070.50 2,076.50 2,079.50 2,082.50 2,088.50 2,091.50 2,094.50 2,100.50 2,103.50 2,106.50 2,454.25 2,458.50 2,462.75 2,471.00 2,475.25 2,479.50 2,487.50 2,491.75 2,496.
Revision 1.03 6/7 GHz (25 MHz) (Frequency Range 6,425 MHz – 7125 MHz) Channel 1 1 1 2 2 2 3 3 3 4 4 4 5 5 5 6 6 6 7 7 7 8 8 8 9 9 9 10 10 10 11 11 11 12 12 12 13 13 13 14 14 14 Offset – 0 + – 0 + – 0 + – 0 + – 0 + – 0 + – 0 + – 0 + – 0 + – 0 + – 0 + – 0 + – 0 + – 0 + Receive Frequency MHz 6,881.25 6,887.50 6,893.75 6,906.25 6,912.50 6,918.75 6,931.25 6,937.50 6,943.75 6,956.25 6,962.50 6.993.75 6,981.25 6,987.50 6,993.75 7,006.25 7,012.50 7,018.75 7,031.25 7,037.50 7,043.75 7,056.25 7,062.50 7,068.
Revision 1.03 Table 3-5: Frequency Plan (US), 12/13 GHz 12/13 GHz (25 MHz) (Frequency Range 12,700 MHz 13,250.0 MHz) Channel 1 1 1 1 2 2 2 2 3 3 3 3 4 4 4 4 5 5 5 5 6 6 6 6 7 7 7 7 8 8 8 8 9 9 9 9 10 10 10 10 Offset 0 + ++ 0 + ++ 0 + ++ 0 + ++ 0 + ++ 0 + ++ 0 + ++ 0 + ++ 0 + ++ 0 + ++ Receive Frequency MHz 12,706.25 12,712.50 12,718.75 12,725.00 12,731.25 12,737.50 12,743.75 12,750.00 12,756.25 12,762.50 12,768.75 12,775.00 12,781.25 12,787.50 12,793.75 12,800.00 12,806.25 12,812.50 12,818.75 12,825.
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Revision 1.03 4. INSTALLATION 4.1 Unpacking and Inspection Unpack and visually inspect the unit for any damage to the LCD, connectors, or external surface area damage. All claims should be filed with the carrier. Save all shipping and packing materials for possible re-use. 4.2 Pre-Installation Checkout Nucomm products are shipped fully tested and calibrated.
Revision 1.03 Hole Screw Size Screw Length (Max) Quantity B 1/8-32 0.3” 6 C 1/4-20 0.35” 1 D 3/8-16 0.
Revision 1.03 The unit has a large heatsink on its top surface. This area requires clearance from other objects while using the unit within the unit’s normal operating air temperature range. Some units have a shroud covering the heatsink. (see Figure 4-3). The shroud includes two built in cooling fans (see figure 4-4). 4.4 Electrical Installation The unit front and back panels are shown in Figure 4-5 thru Figure 4-7. 4.
Revision 1.03 70 MHz is input via the 70 MHz IN port. Select the appropriate input type via the front panel user interface. See Section 5 for details. An optional ASI OUT port enables use of the CMTX7 as a standalone ASI (MPEG2) encoder. 4.7 RF OUTPUT RF output is via a Type-N connector at the rear of the unit (See Figure 4-7). Directly connect a suitable antenna, or a 50 Ω, low-loss coaxial cable (such as RG-214U) between the RF Output and the antenna connector. 4.
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Revision 1.03 CMTX7 Front Panel Power Connector Nucomm P/N: 512-M2001-000 Detoronics P/N: DT02H-14-18PN Mating Connector Nucomm P/N: 512-F3001-000 Mil-C-26482, Series 1 P/N: MS3116F-14-1PS PIN DESCRIPTION C E AC Neutral Chassis GND G H, S AC Line GND (DC GND RETURN) P, U, B M L SHELL +DC IN RS232 TX / OUT RS232 RX / IN Chassis GND NOTES Connected to Chassis and Pins H and S internally. Connected to Internal DC ground, Pin E, and Chassis internally.
Revision 1.03 RS 232 (DB9-F) 1 5 9 Pin # 1 2 3 4 5 6 7 8 9 6 Function RS232 N/C RX / IN TX / OUT N/C GND N/C N/C N/C +11Volts RS485 N/C RX/A TX/A N/C GND TX/B N/C RX/B +11Volts Figure 4-10: RS232/RS485 Connector Pin-Outs Figure 4-11: Firewire Input Connector (Optional) (Contact Nucomm for availability of this option.
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Revision 1.03 5. OPERATION BD=2 GHz 1,999.000MHz CH=1+ 0dBm H QPSK PA1 ITEM 1 2 3 4 5 6 7 8 9 DESCRIPTION Menu Button “Quick Knob” and Selection Pushbutton Digital/Analog Mode Select Button HI/LO Button PRE Button 1 - 5 Selection Buttons TX (Transmit) Mode Button Audio Quick Key Button (non-XLR Model only) Status Display Figure 5-1: ChannelMaster TX7 Front Panel Controls and Indicators 5.
Revision 1.03 tions from the default screen with the Quick Knob. System navigation is via the rotary (See Figure 5"Quick Knob" switch 1) to the right of the LED display. Turn the "Quick Knob" clockwise or counterclockwise to move the cursor through the DEFAULT screen selections or the menus. By pressing the "Quick Knob", you are able to select or activate items. The "Quick Knob" may also be referred to as the “Enter” button or “the Wheel.” 1. 2. 3. 4. 5. 6. 7. 8. 5.1.
Revision 1.03 7. Press "Enter". 8. Change the digit as needed. 9. Press "Enter". 10. Repeat until all digits are correct. 11. When all digits are correct, move the cursor to the end of the frequency where it says “GHz”. 12. Press "Enter". Switching to Analog Mode Set Power Level The user can toggle between HI or LOW power by pressing the “HI/LO” Button. The LCD will then immediately display the change. BD=2 GHz 1,999.000MHz CH=1 0dBm L QPSK PA1 Unit in Low Power Mode 5.2.
Revision 1.03 Pressing the “PRE” Button three times, brings up the presets pc1 – pc5. Pa1 through Pa5 may be accessed by simply pressing the Preset (1-5) buttons. The other two sets of presets are only accessible through the PRE (Preset) Button. Saving Presets Before saving a preset, program the radio with the desired parameters. (Refer to Section 5.2.1 or 5.5.) “PRE” Button The “PRE” button toggles between the three banks of presets. Pressing the “PRE” Button once brings up the presets pa1 – pa5.
Revision 1.03 When a preset is saved, all system parameters are stored into memory with the associated preset. These parameters include: • Modulation Parameters • Input Type • Power Mode • Channel Number & Frequency • Audio Settings All presets represented by uppercase letters have been programmed. All presets represented by lowercase letters have not been programmed. Example: • PA1 - has been programmed. • pa1 - has not been programed. 6. When finished, move the cursor over the arrow at the bottom-right.
Revision 1.03 TX MODE The TX MODE button is used to select from the following operating modes: • NORMAL: Transmitter is active, with or without an input signal. • STANDBY:Transmitter is in STANDBY until switched to another mode. Frequency synthesizer is locked on frequency. • VID STBY: Controls the transmitter behaviour when a signal is not detected on the input port. The system can be set to either go to Standby or transmit the internally generated test bars. • VID STB l at this time. 5.
Revision 1.03 When TEST GEN is enabled, the LED will light and the LCD will display the screen shown above. The ID can be edited from this screen. To modify the TEST TONE levels, scroll the wheel to the right twice and the TONE LEVEL screen will appear. The tone levels can be set from -26dBFS to -10dBFS. When the TEST TONE is “on,” the left channel contains a continuous tone and the right channel has a pulsing tone. 5.
Revision 1.03 When analog modulation is selected, the available input selections are: Composite - The composite signal is routed through the internal low pass filter (bandwidth ± 4.0 MHz NTSC, ± 5.6 MHz PAL typical) then sent to the FM modulator. Note: To input Baseband video, set the video filter to “Bypass.” See sec. 5.7.1. SDI - Internal circuits convert SDI inputs to Composite. The signal is then processed as Composite.
Revision 1.03 A 1 kHz Tone can be activated. The tone is steady on the left channel, and intermittent on the right channel. When Line/Mic is selected, the unit is set to accept a line input on the left connector, and input from a microphone on the right connector. The microphone input range is -4dB to +41dB. This option is only available on models with front panel XLR inputs.
Revision 1.03 tipath environments (around buildings, across water, etc) by increasing the time delay between data segments. Increasing the GI (1/4 is the maximum setting) increases link robustness but reduces the overall data rate, as less time is made available for payload transmission. Conversely, moving the GI towards 1/32 (the minimum) decreases link robustness but allocates more bits to payload. (b) The CR controls how much error correction overhead is included in the data stream.
Revision 1.03 Table 5-2: ChannelMaster 7 MHz B/W Data Rates Modulation Code Guard Interval System Rate 1/32 1/16 1/8 BW = 7 MHz IF = 7.999999875 MHz Flo = 62.000000125 MHz Clk=32.0000 Mbit/s QPSK 16-QAM 64-QAM 1/2 2/3 3/4 5/6 7/8 1/2 2/3 3/4 5/6 7/8 1/2 2/3 3/4 5/6 7/8 5.27807525 7.037433375 7.917112 8.7967915 9.23663125 10.5561505 14.07486675 15.834224 17.593583 18.4732625 15.83422575 21.11230013 23.751336 26.3903745 27.70989375 Data Rate (Mbit/s) 5.12283713 4.8382355 6.8304495 6.45098038 7.
Revision 1.03 5.7.3 VSB The digital audio gain adjustment allows for ±6 dB of gain, and can be used to compensate for variance in line and microphone input levels. The following parameters can be changed using the VSB sub-menu: • Type: 2VSB, 8VSB, 8TVSB • Bandwidth: 6 MHz Table 5-4: VSB Data Rates at 6MHz VSB Data Rate (Mbit/s) 2VSB 8TVSB* 8VSB 9.696329 19.392658 29.088987 *The ATSC standard is 8TVSB at 6MHz. 5.
Revision 1.03 5.8.2 VIDEO Under the Video sub-menu, the user can select any one of ten video settings, plus adjust the GOP setting. The video input type selections are: • 0: NTSC: 720x480(4:2:0)11 The following require >10mbps • 1: NTSC: 720x525(4:2:2) The following require >19mbps • 2: 1080/59.94i:MP@HL • 3: 1080/59.94i:MP@H14L • 4: 720/59.
Revision 1.03 5.9.1 OPTIONS With the Option sub-menu, the user can set the various miscellaneous parameters utilized by the system. The parameters for this sub-menu are: • Frequency Direct: (Yes, No) If “Yes”, the user can change the frequency from the default screen, via the Quick Knob. If “No”, the frequency can only be changed via the frequency menu. • Start in: Controls the startup mode of the unit.
Revision 1.03 5.9.4 RESTORE The Restore option allows the user to restore all factory defaults to the TX7. Caution, all previously stored changes will be erased from memory, including Presets. 5.9.5 FREQUENCY The Frequency option allows an experienced user to modify the frequency plan utilized by the ChannelMaster TX7 using the front panel LCD. Extreme caution should be used, since changes will affect the RF function of the unit. 5.9.6 FACTORY 5.9.
Revision 1.03 5.10.2 ALARM Working in conjunction with the Alarms function, the Alarm History List allows the user to view any active alarm(s) currently affecting the system. When the alarm problem is resolved, the alarm will disappear from the listing.
Revision 1.03 5.11 BAS Relocation Settings For our US clients, the ChannelMaster is designed so that, when properly configured per the following guidelines, you will only need to change one setting on one screen when it’s time to switch over to the “post-relocation” 2 GHz band plan. To preset the unit to allow a “one setting” switchover, there are two groups of settings that must be made in advance: “AUDIO SUB-CARRIER FREQUENCY” and “CHANNEL BANDWIDTH & BAND PLAN”. These are described below. 5.11.
Revision 1.03 5.11.2 Channel Bandwidth and Band Plan In this section, you can set your “pre-relocation” and “post-relocation” Video Bandwidth Deviation, so that when you make the switchover they will be ready to go. Start by making the following menu selections: MENU>SYSTEM>BAS. (Note: If the BAS screen is not visible then it must be enabled by selecting MENU>SYSTEM>OPTIONS>BAS MENU=YES.
Revision 1.03 Underlining denotes a Factory Default setting. 1 Certain menu items may not be available on a given system due to the many customizable features.
Revision 1.03 RF Extreme, LLC – A Vitec Group Company 101 Bilby Road Hackettstown, NJ 07840 Tel: 908-852-3700 Fax: 908-813-0399 www.RFExtreme.
