CHANNELMASTER TX1 Portable Microwave Transmitter User Manual NUCOMM PUBLICATION: M01-0026-00A, REV 2.2 Nucomm Inc. 101 Bilby Road Hackettstown, NJ 07840 Tel: 908-852-3700 Fax: 908-813-0399 www.Nucomm.
Revision 2.2 Warranty Equipment manufactured by Nucomm, Inc. is warranted to meet all customer specifications and to be free from defects in material and workmanship within a period of two years from date of shipment from Nucomm. The company’s liability under this warranty is limited to: • Servicing or adjusting equipment. • Replacement of defective parts. Any equipment returned to the factory shall have the freight paid for by the buyer.
Revision 2.2 Customer Service Information Equipment Returns Customer Service technicians at Nucomm are available to extend technical assistance to customers installing or operating Nucomm equipment. They will also assist customers with equipment troubleshooting. If this cannot be successfully accomplished by telephone, the equipment may be returned to the factory for repair. Loaner equipment is often available until Nucomm is able to ship repaired units.
Revision 2.2 Replacement Modules Troubleshooting to the component level is often not cost-effective and frequently impossible. Often the practical method of effecting field repairs is to substitute known good spare modules for suspect units. Nucomm maintains an inventory of replacement modules for its standard line of products. Field Repair Nucomm products are designed with easy access to components to facilitate service.
Revision 2.2 CAUTION! RISK OF ELECTRICAL SHOCK. DO NOT REMOVE COVERS. • • • • Do not remove any covers. Refer servicing to qualified technicians only. Disconnect all power before servicing. Read and perform all instructions carefully. Failure to follow suggested instructions and guidelines may void all warranties. FCC STATEMENT !! " & ChannelMaster TX1 Transmitter ' ) " # ( ' $ )* % ' + # + .
Revision 2.2 1. 2. TABLE OF CONTENTS DESCRIPTION ......................................................................................................................................1-1 FEATURES ............................................................................................................................................2-1 2.1 Configuration ......................................................................................................................................2-1 2.
Revision 2.2 Document Revision Date Modified May 25, 2005 Revision 0 Modified by M Hardy Modification Detail Initial release October 10, 2005 1 M Hardy Removed reference to RS422 on Page 4-3, Fig 4-3. Added “Frequency Direct” info on 5-2. Updated weights & specs. January 18, 2006 2 M Hardy Added BAS relocation. Updated presets. April 3, 2006 2.1 M Hardy Misc. fixes; channel offsets November 6, 2006 2.
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Revision 2.2 1. DESCRIPTION Nucomm’s ChannelMaster TX1 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.
Revision 2.2 Given the model number, the unit' configuration can be determined using the following: AAAAA – CMTX1 – BBCC – X – YZ Options Emphasis Type 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 2.2 2. FEATURES 2.1 Configuration Nucomm’s ChannelMaster TX1 Series Digital-Analog Portable Microwave Transmitters are among the most comprehensive portable radios in the world. The ChannelMaster TX1 features are designed for both Analog and Digital operation in portable links, as well as helicopter and ENG/OB applications. In the Digital mode, the ChannelMaster accepts an external digitally modulated signal with QPSK, 8PSK, 16QAM, 8VSB, COFDM, DVBS and multi-level FSK.
Revision 2.2 transmission. If the synthesizer has not attained a lock when the unit is switched from Standby mode to Normal, the unit will remain in Standby until on-frequency lock has been obtained. Signal Strength Indicators Transmitted signal strength is indicated on the LCD display by a digital readout. The digital readout indicates the transmitted signal level directly in watts. (This function is intended as an approximate reading of power only.
RF Output 70 MHz Monitor Output Stdby-2 Stdby-1 902-P051-05 Power Supply I2c, 12V I2C +12V I2c, RF_Pwr_Out, 12V, +5V I2c, RF_Pwr, 12V, 12V_Adj 70MHz AC/DC +12V 00 Video, ASI, SDI Out, 4 Audio/AES 902-M054-01 Modulator Channel Master Interface 902-C108-01 YIG VCO 901-S089 IF & RF UP Converter 902-I058/S088 36 to 70 MHz 36 MHz up-Converter Amplifier 902-M055-01 70MHz Det_1 & 2 +12V_PA, 12V_Adj RF Output-2 Det Det AP AP Features 00 RF Output-1 902-C12201 Lower Front Panel +12V
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Revision 2.2 3. SPECIFICATIONS & FREQUENCY PLANS Table 3-1 ChannelMaster TX1 Specifications RF Performance: Frequency Bands:.................................... bands from 1.9 GHz to 13.25 GHz available (higher frequencies pending). Multi-band models available. Please contact Nucomm for specifics. Tuning step size: ..................................... 250 kHz (US), 100 kHz (International) 70 MHz input:........................................... –10 dBm to 0 dBm (75 ) Frequency stability: ................
Revision 2.2 Table 3-1. ChannelMaster TX1 Specifications (Continued) Audio Performance: Standard: ................................................. 2 line audio and 1 digital AES/EBU inputs Available: ................................................. 4 line audio and 2 digital AES/EBU inputs (audios can be analog, AES/EBU or SDI Deembedded) Analog Audio Mode Sub-Carriers: ........................................... selectable and field tunable from front panel; Tunable in 5 kHz steps 4.8 MHz to 9.
Revision 2.2 Table 3-1. ChannelMaster TX1 Specifications (Continued) 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 (2 GHz), Low-Power: ..... 15.25 lbs (6.86 kg) Duale-Band (2/7 GHz), Low-Power: .. 16.50 lbs (7.43 kg) Single-Band (2 GHz), High-Power: .... 15.75 lbs (7.
Revision 2.2 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 2.2 CHANNEL / FREQUENCY PLAN - CHART NO: 326 2 GHz (12 MHz) (Frequency Range 2,025 MHz – 2,496 MHz) Channel Offset Receive Frequency MHz 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 – 0 + – 0 + – 0 + – 0 + – 0 + – 0 + – 0 + – 0 + – 0 + – 0 + 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.
Revision 2.2 CHANNEL / FREQUENCY PLAN - CHART NO: 326 (Frequency Range 6,431 MHz – 7,119 MHz) Channel Offset Receive Frequency MHz 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 – 0 + – 0 + – 0 + – 0 + – 0 + – 0 + – 0 + – 0 + – 0 + – 0 + – 0 + – 0 + – 0 + – 0 + 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.
Revision 2.2 CHANNEL / FREQUENCY PLAN - CHART NO: 10 (Frequency Range 12,706MHz - 12,950MHz) Channel Offset Receive Frequency MHz 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 0 + ++ 0 + ++ 0 + ++ 0 + ++ 0 + ++ 0 + ++ 0 + ++ 0 + ++ 0 + ++ 0 + ++ 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 12,825.00 12,831.25 12,837.
Revision 2.2 CHANNEL / FREQUENCY PAN - CHART NO: 10 (Frequency Range 12,976MHz - 13,250MHz) Channel Offset Receive Frequency MHz 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 11 11 11 11 12 12 12 12 0 + ++ 0 + ++ 0 + ++ 0 + ++ 0 + ++ 0 + ++ 0 + ++ 0 + ++ 0 + ++ 0 + ++ 0 + ++ 0 + ++ 12,956.25 12,962.50 12,968.75 12,975.00 12,981.25 12,987.50 12,993.75 13,000.00 13,006.25 13,012.50 13,018.75 13,025.00 13,031.25 13,037.50 13,043.75 13,050.00 13,056.25 13,062.50 13,068.
Revision 2.2 4. INSTALLATION 4.1 Unpacking and Inspection Unpack and visually inspect the unit for LCD, connectors, and 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 Connect the ChannelMaster RF output through a 30 watt, 30 dB attenuator to a spectrum analyzer. Verify the output frequency and level correspond directly to the transmitter front panel settings. 4.
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Revision 2.2 PIN-OUT J H G M L K F E D C B A CM Transmitter Audio Cable DESCRIPTION +…….Analog1/AES1 GND..Analog1/AES1 -……..Analog1/AES1 +…….Analog2 GND..Analog2 -……..Analog2 +…….Analog3/AES2 GND..Analog3/AES2 -……..Analog3/AES2 +…….Analog4 GND..Analog4 -…….
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Revision 2.2 5. OPERATION Figure 5-1: ChannelMaster TX1 Front Panel Controls and Indicators 5.1 Power Up Upon powering up the unit, you will see three quick screens showing the equipment type, the model number, and the serial number. After that, the unit will display the DEFAULT screen, which will look similar to the following photo (depending on your configuration). pressing the "Quick Knob", you are able to select, or activate, menu items.
Revision 2.2 7. Again, Press the “Quick-Knob” to save the character. 8. Repeat Steps 2 thru 7 until either the desired name is assigned or all character positions are filled. On certain screens (as with system settings), an arrow is used to show the current setting, as in the following where "SDI" is currently set: Switching to Digital Mode When digital modulation is selected, the available input selections will be: Note the highlighted arrow at the bottom left of the screen.
Revision 2.2 When analog modulation is selected, the available input selections will be: 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. SDI - Internal circuits convert SDI inputs to Composite. The signal is then processed as Composite. External 70 MHz FM - This input bypasses the modulator, and routes to the heterodyne up-converter.
Revision 2.2 To change these parameters, refer to Section 5.2.1 or 5.5. “PRE” Button As well as also bringing up the first group of presets (pa1 – pa5), the other two sets of presets are only accessible through the “PRE” (Preset) Button. Pressing the “PRE” Button once brings up the presets pa1 – pa5. Pressing the “PRE” Button twice, brings up the presets pb1 – pb5. Pressing the “PRE” Button three times, brings up the presets pc1 – pc5.
Revision 2.2 All presets represented by lowercase letters have not been programmed. Example: • PA1 - has been programmed. • pa1 - has not been programed. Changing & Setting Preset Name Recalling A Preset Briefly press the preset to recall settings. When any of the first five Presets have been recalled, the associated Preset LED will illuminate. Each preset can be given a name up to 16 characters long. The name can consist of alpha-numeric characters only (characters A – Z & 1 – 9).
Revision 2.2 as if you had selected the following menu items: Menu>Encoder>Audio. (Refer to Section 5.5; Encoder Menu Selections.) When modulating in analog, the system displays the FM audio settings, as if the following items were selected: Menu> Modulation> Parameters> FM> Audio. (Refer to Section 5.5; FM.) From the Upper Level Menu, the user can select one of six sub-menus to access.
Revision 2.2 As previously discussed in Section 5.2, the Digital inputs consist of: • Composite • SDI • External 70 MHz • ASI As previously discussed in Section 5.2, the Analog inputs consist of: • Composite • SDI • External 70 MHz Remember, only one input can be made active at any time.
Revision 2.2 COFDM For the COFDM (Digital) sub-menu, the following parameters can be changed: • Power: On, Off • Constellation: QPSK, 16QAM, 64QAM • Code Rate (error correction):1/2, 2/3, 3/4, 5/6, 7/8 • Guard Interval (guard spacing delay between intervals): 1/32, 1/16, 1/8, 1/4.
Revision 2.2 5.6 Data Rate Use the following tables to identify the resulting Data Rate that will be set when selecting the ChannelMaster's Code Rate: (Modulation>Parameter Setup> COFDM >Code Rate) Table 5-1ChannelMaster 8 MHz B/W Data Rates Code Modulation Rate System IF = 9.142857 MHz Clk=36.571429 Mbit/s 1/2 2/3 QPSK 3/4 5/6 7/8 1/2 2/3 16-QAM 3/4 5/6 7/8 1/2 2/3 64-QAM 3/4 5/6 7/8 Operation Guard Interval 1/32 1/16 1/8 BW = 8 MHz Flo = 60.857143 MHz Data Rate (Mbit/s) 6.032086 5.854671 5.529412 8.
Revision 2.2 Table 5-2 ChannelMaster 7 MHz B/W Data Rates Code Modulation Rate System IF = 7.999999875 MHz Clk=32.0000 Mbit/s 1/2 2/3 QPSK 3/4 5/6 7/8 1/2 2/3 16-QAM 3/4 5/6 7/8 1/2 2/3 64-QAM 3/4 5/6 7/8 Guard Interval 1/32 1/16 1/8 BW = 7 MHz Flo = 62.000000125 MHz Data Rate (Mbit/s) 5.27807525 5.12283713 4.8382355 7.037433375 6.8304495 6.45098038 7.917112 7.68425613 7.25735325 8.7967915 8.53806188 8.06372525 9.23663125 8.96496563 8.46691213 10.5561505 10.2456743 9.676471 14.07486675 13.660899 12.
Revision 2.2 Encoder Menu Selections VSB For the VSB (Digital) sub-menu, the following parameters can be changed: • Type: 2VSB, 4VSB, 8VSB, 16VSB, 8TVSB • Bandwidth: 6 MHz, 7 MHz, 8 MHz BW = 6 MHz VSB 2 VSB 4/8T VSB 8 VSB 16 VSB BW = 7 MHz VSB 2 VSB 4/8T VSB 8 VSB 16 VSB BW = 8 MHz VSB 2 VSB 4/8T VSB 8 VSB 16 VSB Data Rate (Mbit/s) 9.7 19.4 29.1 38.8 Data Rate (Mbit/s) 11.3 22.6 33.9 45.3 Data Rate (Mbit/s) 12.9 25.5 38.8 51.
Revision 2.2 • Under the Video sub-menu, the user can change any one of three Digital video selections. They are: • Standard (format): NTSC, PAL • Profile (video encoding): 4:2:2, 4:2:0 • Aspect (Ratio): 4:3, 16:9 The Table sub-menu addresses how MPEG-2 data packets are identified during transmission.
Revision 2.2 • 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 main menu, via the Quick Knob. If “No”, the frequency can only be changed via the frequency menu. • Start in Standby: (Yes, No) tells the system to either start in the Standby mode (Yes), or begin transmitting immediately when powered-up (No).
Revision 2.2 itself. Regardless of the problem, the Alarm LED will illuminate, and the LCD will flash a text message stating the alarm problem. Alarm History List The Factory Settings are to be used by Nucomm authorized personnel only! Any unauthorized tampering could make the unit unusable. Working in conjunction with the Alarms function, the Alarm History List allows the user to view any active alarm(s) currently affecting the system.
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Revision 2.2 5.7 Nextel 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-Nextel” 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. 5.7.
Revision 2.2 5.7.2 Channel Bandwidth and Band Plan In this section, you can set your “pre-Nextel” and “post-Nextel” Video Bandwidth Deviation, so that when you make the switchover they will be ready to go. Start this set-up procedure by making the following menu selections: MENU>SYSTEM>Nextel.
Revision 2 MENU Figure 5-2 ChannelMaster Menu Tree 5-18 ChannelMaster TX1 Transmitter
