NEWSCASTER VT2 ENG/OB Microwave Transmitter User Manual NUCOMM PUBLICATION: M17-0002-01A, REV 0.0 For NCVT2 Rev B (Software Version B1.xx) Nucomm Inc. 101 Bilby Road Hackettstown, NJ 07840 Tel: 908-852-3700 Fax: 908-813-0399 www.nucomm.
NewsCaster VT2 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.
NewsCaster VT2 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.
NewsCaster VT2 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.
NewsCaster VT2 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 This equipment has been tested and found to comply with Part 74.637 (a) (2) of the FCC Rules and Regulations.
NewsCaster VT2 Table of Contents 1. 2. 3. Description .................................................................................................... 11 Features ......................................................................................................... 13 Specifications and Frequency Plans (USA) .................................................... 19 3.1 Frequency Plans (USA).......................................................................... 23 4. Installation...................
NewsCaster VT2 Figures Figure 1: NewsCaster VT2 System Diagram ........................................................11 Figure 2: NewsCaster VT2, Simple Block Diagram..............................................13 Figure 3: Control Unit Block Diagram..................................................................14 Figure 4: RF Head Block Diagram .......................................................................17 Figure 5: Control Unit Front Panel ................................................
NewsCaster VT2 Tables Table 1: Frequency Plan (US), 2 GHz 17 MHz.....................................................23 Table 2: Frequency Plan (US), 2 GHz 12 MHz.....................................................24 Table 3: Frequency Plan (US), 7 GHz ..................................................................25 Table 4: Frequency Plan (US), 12 GHz.................................................................26 Table 5: Frequency Plan (US), 13 GHz................................................
NewsCaster VT2 Document Revision Date Modified October 10, 2006 0.0 Revision M17-0002-01A Rev 0.0 Modified by R.
NewsCaster VT2 M17-0002-01A Rev 0.
NewsCaster VT2 Description 1. DESCRIPTION Nucomm’s NewsCaster VT2 series is a two box Digital and Analog ENG/OB Microwave Transmitter System. The Mast Mounted Microwave Transmitter 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.
NewsCaster VT2 Features The parts lists and drawings in this manual are specific to this unit. Where as: AA = mean frequency band centered 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 (/).
NewsCaster VT2 Features 2.
NewsCaster VT2 Features ($8 ,170 23 ! ($889 -( *( ( $/ % ( $!8 ! "#$%"& '( ) ! 01 23 !* ( 4+-5 #! +-5 #! 6 ( ! ) & 6 $ +, #"+-. #) & / $ ) Figure 3: Control Unit Block Diagram M17-0002-01A Rev 0.
NewsCaster VT2 Features In Analog mode, the NewsCaster VT2 accepts SDI or Composite video, and LINE, Embedded, or AES audio. The NewsCaster VT2 can also accept externally modulated signals via the 70 MHz Input Port. been obtained. Switching from “STANDBY” to the “NORMAL” (operating) mode results in instantaneous on-frequency transmission. If the synthesizer has not attained lock when Standby Mode is switched to “NORMAL”, the unit will remain in STANDBY” until onfrequency lock has been obtained.
NewsCaster VT2 Features When the Dynamic Color Bar Generator is activated, a 1 kHz test tone is inputted to the active audio channels. The left channel will be a solid tone. The right channel will be a pulsed tone. Preset Keys: Nucomm has designed six Preset Keys into the front panel of the Newscaster VT2. These keys are used to instantly recall previously programmed configuration parameters such as frequency, modulation format, analog or digital, video and audio input type, etc.
NewsCaster VT2 Features RF unit is equipped with type “N” connectors for the directional and optional omnidirectional antenna(s). RF Head Features: The rugged NewsCaster VT2 RF Head, as shown in Figure 4, includes: • IF to RF Up-Converter. • RF Power Amplifier. • Low Noise Frequency Synthesizer. • Diplexer that splits the +48 volts, the 70 MHz and the Control Data. • DC to DC Converter. • Optional Pan & Tilt Controller. • Optional Omni/Directional Antenna switch.
NewsCaster VT2 M17-0002-01A Rev 0.
NewsCaster VT2 Specifications & Frequency Plans 3. SPECIFICATIONS AND FREQUENCY PLANS (USA) RF PERFORMANCE Frequency Bands (Front panel selectable) Band 1: .......................................................1.99 GHz – 2.50 GHz Band 1 (optional): .......................................2.30 GHz – 2.70 GHz Band 2: .......................................................6.43 GHz – 7.12 GHz Band 3: ........................................................12.706 GHz – 13.
NewsCaster VT2 Specifications & Frequency Plans NEWSCASTER VT2 Specifications (continued) Modulation Modes COFDM Modulation Formats:............................................ COFDM; QPSK, 16QAM, 64 QAM 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 Analog Analog FM:..........
NewsCaster VT2 Specifications & Frequency Plans NEWSCASTER VT2 Specifications (continued) Audio Performance: Analog Audio Mode Two channels:..............................................2 Analog, or 1 AES/EBU, SDI De-embedded Four optional:...............................................4 Analog, or 2 AES/EBU, SDI De-embedded Sub-Carriers: selectable and field tunable from front panel; Tunable in 5 kHz steps 4.8 MHz to 9.0 MHz Digital Audio Mode Two channels:..............................................
NewsCaster VT2 Specifications & Frequency Plans NEWSCASTER VT2 Specifications (continued) Physical Characteristics: Size: Control Unit:................................................19” (48.26 cm) W, 1.75” (4.45 cm) H, 16" (40.64 cm) D RF Head (Standard Power): .........................9.5” (24.13 cm) W, 5” (12.7 cm) H, 15” (38.1 cm) L RF Head (High Power): ...............................9.5” (24.13 cm) W, 6.38” (16.2 cm) H, 15” (38.1 cm) L Weight: Control Unit:...........................................
NewsCaster VT2 3.1 Specifications & Frequency Plans 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.
NewsCaster VT2 Specifications & Frequency Plans 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.
NewsCaster VT2 Specifications & Frequency Plans 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.
NewsCaster VT2 Specifications & Frequency Plans 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.
NewsCaster VT2 Specifications & Frequency Plans 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.
NewsCaster VT2 M17-0002-01A Rev 0.
NewsCaster VT2 Installation Connect the NewsCaster VT2 IF output to the RF Head via an appropriate IF cable. (Refer to Table 7.) Connect the RF output of the RF Head through a 30 Watt, 30 dB attenuator to a spectrum analyzer and observe the output frequency on the analyzer display. Note that the frequency and level correspond directly to the LCD display on the front panel of the VT2. 4. INSTALLATION 4.
NewsCaster VT2 Installation Figure 5: Control Unit Front Panel M17-0002-01A Rev 0.
NewsCaster VT2 Installation 6 NOTE: Depending on the configuration ordered, some units may not feature all of the connectors pictured here. 3 4 2 CAUTION – IF INTERFACE (7) The IF Interface center conductor carries +48V to power the RF Head. Do not connect any instruments without use of a special test cable. 7 5 10 9 8 8A 1 2.5 Amp Fuse (120 VAC Units) 1.5 Amp Fuse (220-260 VAC Units) Figure 6: Control Unit Rear Panel (AC model) M17-0002-01A Rev 0.
NewsCaster VT2 4.5 Installation CONTROL UNIT ELECTRICAL INSTALLATION • Input Power AC Power: The NewsCaster VT2 is standard configured to operate on AC power ranging from 90 to 260 VAC at 40 to 60 Hz. Connect the provided AC line cord to an appropriate AC power source. (Refer to Figure 6, Detail 1.) Alternate line cord connector types are available from Nucomm if needed. DC Power: When configured for DC, the system can operate on DC power ranging from +11 to +32 VDC.
NewsCaster VT2 Installation Audio The Analog and Digital audio inputs are made via a strip terminal on the rear panel. (Refer to Figure 6, Detail 6 for connector location.) The terminal marked "G" is for the ground lead, (–) is for the negative signal and (+) is for the positive. (Refer to Figure 7 for the connector detail.) The Digital AES/EBU inputs are made via the Audio 1 & Audio 3 terminals. As such, only one Digital audio is available in the standard “two audio” configuration.
NewsCaster VT2 Installation Joystick This optional 6-pin connector (Figure 6, Detail 9) connects the optional joystick for Pan & Tilt Motor control. (Refer to Figure 9 for a detailed view and the pin-outs.) Pan/Tilt Pwr This optional connector is used to provide power to the Pan & Tilt Motor. See Figure 6, Detail 10 for connector location on the Control Unit. Detailed cabling info for 120 VAC Pan & Tilt systems can be found in Table 9 and Figure 16.
NewsCaster VT2 4.6 Installation RF HEAD MECHANICAL INSTALL Nucomm’s mast mounted transmitter consists of a single RF head (containing the upconverter, P&T, PSU, Antenna Controls, and amplifier In a typical installation of Nucomm's NewsCaster VT2, the RF Head is mounted on the Pan & Tilt mechanism, which is attached to a pneumatic mast atop an ENG/OB van. (See Figure 12 for a typical mounting setup.) To ease the mounting of the RF Head to the Pan & Tilt, mounting adapter plates are available.
NewsCaster VT2 Installation Figure 13: Hole Pattern of RF Head Base Plate Drill holes (A) are .250 Dia. (through drilled) Material is ALUM 6061, ¼” thick. Use four (4) size ¼-20 x .750” screws to mount the unit. M17-0002-01A Rev 0.
NewsCaster VT2 4.7 Installation PREPARING THE INTERCONNECT CABLES (INCLUDING NYCOIL) The NewsCaster VT2 is flexibly designed for use with multiple IF cable types. The STANDARD cable types support diplexed +48 VDC for transport to the RF Head. Belden 1694A (Coax) and Belden 8232A (Triax) are certified for this “one cable” configuration. Other common cables, such as Belden 1505, may require the use of the AUX Power option. Refer to Table 7 for more details on using the cables types mentioned.
NewsCaster VT2 Config Type Standard Coax (w/o P&T) Standard Coax (w/ P&T Standard Triax (w/o P&T) Standard Triax (w/ P&T) Alternate Coax (requires Aux Power Option) (w/o P&T) Alternate Coax (requires Aux Power Option) (w/ P&T) Installation Control Unit Connector Cable Type # of Conductors Cable Use RF Head Connector TNC Connector Trompeter UPL40-41 Nucomm 511-F3003-000 Belden 1694A RG-6U (recommended) N/A • • • 70 MHz IF Inter-Unit Data +48 VDC Power TNC Connector Trompeter UPL40-41 Nucomm 511
NewsCaster VT2 Installation The following Tables and Figures are provided to assist in preparing the interconnect cables for the optional Pan & Tilt control. Control Unit “PAN/TILT POWER” Recommended Wire Size (AWG) Function A +160VAC* #18 White B +160VAC* #18 Red C Not Used D Not Used E –160VAC* #18 Brown F –160VAC* #18 Black G Not Used H Not Used *The motor for the 120 VAC Pan and Tilt actually requires 160 VAC.
NewsCaster VT2 Installation Control Unit “PAN/TILT POWER” A B C D No Connection No Connection No Connection Recommended Wire Size (AWG) Function +12VDC +12VDC GND GND Not Used Not Used Not Used #18 YELLOW #18 YELLOW #18 BLACK #18 BLACK RF Head “PAN/TILT PWR FROM CONTROL” A B E F C D G Table 10: Pan & Tilt Power (12 VDC) Connector Pin-outs Figure 17: Pan & Tilt Power (12 VDC) Interconnect Diagram M17-0002-01A Rev 0.
NewsCaster VT2 Installation RF HEAD “TO PAN/TILT” (18 PIN) FUNCTION RECOMMENDED WIRE SIZE (AWG) PAN & TILT MOTOR (17 PIN) A B C D E F G H J K L M N P T U N/C Position Pot-Ref B N/C Position Pot-Ref A AZ Left Elev. Pot Wiper Chassis Ground Field “+” (120 VAC Units Only) Elev. Up Elev.
NewsCaster VT2 Installation NCVT2 - RF HEAD Function N/C E C D F G K N/C N/C N/C N/C N/C CW (Default) V H 2/7 GHz Band Select CCW Common Ground Earth Ground N/C N/C N/C N/C N/C Recommended Wire Size (AWG) N/C #22 BROWN #22 RED #22 GREEN #22 WHITE #22 BLACK N/C N/C N/C N/C N/C N/C NSI Antenna N/C A B L D E N/C F H J K M Table 12: NSI Quad Antenna Polarization Connector Pin Out Figure 19: NSI Quad Antenna Polarization Connections M17-0002-01A Rev 0.
NewsCaster VT2 Installation NCVT2 - RF HEAD N/C E C D F G N/C K N/C N/C N/C N/C N/C Function Recommended Wire Size (AWG) CW (Default) V H 2/7 GHz Band Select CCW Common +24V Shield GND DC GND N/C N/C N/C N/C N/C N/C #22 BROWN #22 RED #22 GREEN #22 WHITE #22 BLACK N/C #22 BLUE N/C N/C N/C N/C N/C Radio Waves Antenna N/C F B G C K L M A D E H J Table 13: Radio Waves Quad Antenna Polarization Connector Pin Out Figure 20: Radio Waves Quad Antenna Polarization Connections M17-0002-01A Rev 0.
NewsCaster VT2 4.8 Installation RF HEAD CONNECTORS Pan / Tilt Power (from Control) IF Interface and AUX Power This connector (if configured) inputs power from the Control Unit, which is then passed on to the RF Head. See Table 9 and Figure 16 for 120 VAC P&T. See Table 10 and Figure 17 for 12 VDC P&T. (Refer also to Figure 21, Detail 14.) The TNC, or Triax, IF connector inputs the diplexed 70 MHz, inter-unit control data, and DC power for the RF Head when Belden 1694, or Triax, cable is used.
NewsCaster VT2 Installation Figure 22: RF Head AUX Power Connector Figure 23: RF Head, Rear Panel (Dual Band shown, with optional Omni ports) WARNING!!! DO NOT connect the wrong type cable to the wrong type unit, since doing so will damage one of the connectors and result in intermittent failures. Figure 24: TNC and TRIAX Connectors M17-0002-01A Rev 0.
NewsCaster VT2 Installation Figure 25: NCVT2 Interconnects 4.9 CONTROL UNIT / RF HEAD INTERCONNECT • Figure 25 shows the interconnects between the NewsCaster VT2 Control Unit and the mast mounted RF Unit. To assist in preparing the Control and Monitor cable, connector pin assignments and recommended wire sizes are provided.
NewsCaster VT2 Installation If the AUX Power option is configured: • Connect the AUX Power cable to the AUX DC POWER jack on the RF Head. Connect the antenna cable between your antenna and the appropriate “RF OUTPUT” port: 2 GHz Omni; 2 GHz Directional; 7 GHz Omni; or 7 GHz Directional. (Refer to Figure 23) NSI & Radio Waves Quad Antenna Polarization Interconnection Wiring diagrams are provided to assist in preparing the polarization cable, including connector pin assignments and recommended wire sizes.
NewsCaster VT2 M17-0002-01A Rev 0.
NewsCaster VT2 Operation 5. OPERATION 1 2 3 4 5 3 12 8 13 CH=7 7,037.500MHz BAND=6-7G LOW 0.0dBm A 6 7 9 11 14 10 Figure 26: NEWSCASTER VT2 Front Panel Controls and Indicators 5.1 FRONT PANEL OPERATION The NewsCaster VT2 operating controls and indicators are shown in Figure 26. Location numbers provide for cross-reference between the figure and description. On each screen, a cursor appears as an underscore character, and is moved by the left ( ) or right ( ) arrow keys.
NewsCaster VT2 Operation Channel or Band Selection: 5.2 You can change channels or bands on the Default Screen by underscoring the channel and pressing ENT to select it. Use the up or down arrows to select the new channel, then Press ENT to have the new channel take affect. The unit will go to standby as the synthesizer changes frequency. Transmission will resume when the new frequency is reached.
NewsCaster VT2 Operation Mode (6) The MODE key is used to select from the following operating modes: • Normal: Transmitter is active, with or without a video (or composite) input signal. AUDIO (7) The AUDIO quick key is used for basic FM audio mode, line/AES selection and gain changes. After the Audio Button is pressed, the Audio options will appear. The user must then select the desired audio channel. • Standby: Transmitter is in STANDBY until switched to another mode.
NewsCaster VT2 Operation If LINE is selected, the unit accepts balanced 600 inputs at +8 dBm Analog (–10 dBu Digital). At 1 kHz input, headroom is +18 dBm Analog (0.0 dBu Digital). video components do not interfere with the 4.83 MHz audio sub-carrier.) If AES is selected, the unit accepts data from the backplane AES port(s) and decodes the Group 1 audio from the SDI stream. If only two audio channels are configured, they will be the first channel in Group 1.
NewsCaster VT2 Operation 5.3 When TEST GEN is enabled, the green LED is lit and the LCD displays the current pattern and ID. The menu will time-out after 30 seconds. Pressing TEST GEN a second time, disables the TEST GEN function. ANTENNA CONTROL (10) The SELECT key is used to change the antenna polarization. PAN &TILT (11) When Pan & Tilt is pressed, the Red indicator LED is lit to indicate P/T power is enabled. Any joystick movement will move the antenna in that direction.
NewsCaster VT2 Operation FM Audio Settings Under the FM Audio sub-menu, there are four channels to choose from. They are: • SC1L (Audio 1 Left) • SC1R (Audio 1 Right) • SC2L (Audio 2 Left) • SC2R (Audio 2 Right) INPUT MENU The Input Menu is used only to set the type of signal that is to be inputted to the unit. • Composite • SDI • 70 MHz • ASI Each has an identical set of parameters. 1.
NewsCaster VT2 Operation COFDM PARAMETERS The COFDM (digital) parameters consists of five options: 1. Power - toggles the COFDM modulator “On” or “OFF”. 2. Constellation - provides several different methods of modulating the signal for transmission: • • • QSPK 16-QAM 64-QAM • • 3. Code Rate Under the Code Rate sub-menu, the user can set the amount of error correction. The Code Rate (as well as Guard Interval, Bandwidth, and Modulation) is instrumental in setting the proper Data Rate.
NewsCaster VT2 Operation Table 14: COFDM Data Rates (8 MHz Bandwidth) Code Rate Modulation System IF = 9.142857 MHz Clk=36.571429 Mbit/s 1/2 2/3 3/4 QPSK 5/6 7/8 1/2 2/3 3/4 16-QAM 5/6 7/8 1/2 2/3 3/4 64-QAM 5/6 7/8 Guard Interval 1/32 1/16 1/8 1/4 Flo = 60.857143 MHz BW = 8 MHz 6.032086 8.042781 9.048128 10.053476 10.55615 12.064172 16.085562 18.096256 20.106952 21.1123 18.096258 24.128343 27.144384 30.160428 31.66845 Data Rate (Mbit/s) 5.854671 5.529412 7.806228 7.372549 8.782007 8.294118 9.757785 9.
NewsCaster VT2 Operation Table 16: COFDM Data Rates (6 MHz Bandwidth) Code Modulation Rate System IF = 6.85714275 MHz Clk=27.428571 Mbit/s 1/2 2/3 3/4 QPSK 5/6 7/8 1/2 2/3 3/4 16-QAM 5/6 7/8 1/2 2/3 3/4 64-QAM 5/6 7/8 M17-0002-01A Rev 0.0 Guard Interval 1/32 1/16 1/8 1/4 Flo = 63.14285725 MHz BW = 6 MHz Data Rate (Mbit/s) 4.5240645 4.48248248 4.2334561 3.81011061 6.03208575 5.854671 5.5294118 4.9764705 6.786096 6.58650525 6.2205885 5.5985295 7.540107 7.31833875 6.9117645 6.2205885 7.9171125 7.
NewsCaster VT2 Operation VSB PARAMETERS ENCODER MENU 1. Type - provides several different methods of modulating the signal for transmission: The Encoder Menu allows the user to adjust the MPEG Encoder’s operating parameters. The menu accesses four sub-menus. They are: • Audio • Video • Table • GOP • • • • 2VSB 4VSB 8VSB 8VSB-T 2. Bandwidth - The bandwidth is the span or width of a carrier frequency. Under the Bandwidth sub-menu, the user can select the size of the carrier bandwidth.
NewsCaster VT2 Operation GOP Settings Video Settings The Video Settings allow the user to select the video formatting to be used with the MPEG Encoder. They are: 1. Standard - can be toggled between: • NTSC • PAL 2. Profile - can be toggled between: • 4:2:0 • 4:2:2 3. Aspect Ratio - can be toggled between: • 4:3 - Normal full-screen TV. • 16:9 - Wide-screen TV. Table Settings MPEG-2 data packets consist of 188 bytes of information, with the package identifier (PID) located at the start of each packet.
NewsCaster VT2 Operation Option Settings 1. Frequency Direct - This optional operating mode allowing the frequency to be changed without conventional use of a channel. It can be toggled “On” or “Off”. been chosen, the user must use the Antenna Button (Front Panel) to toggle between the two different types of antennas. (Refer to Figure 28.) To use Frequency Direct (when it is enabled) use the following procedure: In the Default Screen, move the cursor to underline the frequency, and press the “ENT” key.
NewsCaster VT2 Operation Remote Settings Frequency Settings The Remote Settings Menu allows the NewsCaster VT2 to communicate to other devices, such as a PC or PDA. It is important to match all handshaking protocols for the two devices to communicate with each other. This menu allows the user to modify the frequencies of the currently selected bandplan. Factory Settings 1. Mode - sets up the type of control location.
NewsCaster VT2 • • • Operation (EPROMs, FPGA, etc.), including the current ASI rate fed to the system, and the maximum rate supported by the system. Up-Converter - for monitoring the Up-Converter voltages and verifying is software version. RF Head - for monitoring the aspects and data of the RF Head section. Front Panel - for monitoring the aspects and data of the Front Panel section.
NewsCaster VT2 M17-0002-01A Rev 0.
NewsCaster VT2 5.4 Operation 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” 2GHz 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”.
NewsCaster VT2 Operation 5.4.2 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.
NewsCaster VT2 5.5 Operation TROUBLESHOOTING GUIDE Alarm Message NewsCaster VT2 Alarms Problem FP: Data Error A setting is set to an illegal value. FP: I2C Error There is an internal communications error. External ASI Data Rate is set higher than the modulation will support. MOD: ASI OVERFLOW MOD: ASI UNLOCKED External ASI Signal Lock Error. MOD: AUDIO ERROR Problem with the Audio data. MOD: Data Error A setting is set to an illegal value.
NewsCaster VT2 Alarm Message Operation NewsCaster VT2 Alarms (continued) Problem NO RF HEAD The controller is not communicating with the RF Head. PSU: Voltage Error PSU voltage regulation or amplitude level of +12 VDC beyond acceptable range. RF: +5V Error or RF: +12V Error or RF: +12V Pwr Amp Err or RF: +24V Error or RF: +45V Error RF Head: I2C Error RF Head Power Amp +12 VDC out of acceptable range. The controller is not communicating with the RF Head. M17-0002-01A Rev 0.
NewsCaster VT2 Alarm Message Operation NewsCaster VT2 Alarms (continued) Problem SYNTH: I2C Error UC: +5V Error or UC: +11V Error Internal problem in the UC. Faulty UC PSU, voltage is out of tolerance. UC: I2C Error. UC: IFLO Unlock Internal problem in the UC. IF Local Oscillator (Reference) cannot phase lock. UC: RFLO Unlock RF Local Oscillator (Reference) cannot phase lock. M17-0002-01A Rev 0.0 68 Probable Cause/Troubleshooting Consult the factory. 1. Possible faulty main PSU.
NewsCaster VT2 Operation 5.5.1 Multiple Alarms Under some situations, multiple alarms may occur. If this happens, correct any power supply voltage problem first. In many instances, other alarms will be triggered as the result of a missing or out of range power supply level. 5.5.2 NCVT2 Control Unit Front Panel (C132) When a problem occurs without an alarm prompt, a good starting point is to check all of the setup menus. A parameter may have been inadvertently missed or set to the wrong value.
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NewsCaster VT2 Operation & ) ,7 = 7$ :7 -7 ! .7 & B7 07 9 4! ; < ) $ 4; < ) < * ; < ) ( 4; < ) ; < ) 2!; < ) ( ; < ) ,7 $ 7 :7 9 9 0 + * * 8 ,7 78 :7 ( -7 % ; ; 9 9 $ ; ;") ) ;" 1 ) ; ; ) / ) ' ( ) "& % $ 4 7 +1 , 2 ". ! ! " " # $% &' ( )% #% #% . /0 1 ) -") * ,7 # 7! :7 ! -7 $9 .7 ; B7 ( ; ( 07 1C; 57 1C; C7 1C; ,17 1C; ,,7 ,0; , 7 1. 2 * ,7 +,1 7 +.71 :7 A -7 ,7 7 :7 -7 Figure 30: Menu Tree M17-0002-01A Rev 0.
NewsCaster VT2 M17-0002-01A Rev 0.
