JANTEQ S-TWINTX-HP-AB BHDTX-S-TWINTX-HP-AB User Manual

JANTEQ CORPORATION BHDTX-S-TWINTX-HP-AB

User Manual

 www.janteq.com   User Manual BHDTX-S-TWINTX-HP-AB
  BHDTX-S-TWINTX-HP-AB User Manual Janteq Corporation 9272 Jeronimo Rd. Suite 124 Irvine, CA 92618 Tel: 949-215-2603 Fax: 949-215-2604 www.janteq.com Copyright  ©  2009-2011  Janteq  Corporation.  All  rights  reserved.  This  document  contains  proprietary  information.  Receipt  or  possession  of  this document  does  not  convey  any  rights  to  reproduce,  distribute,  disclose  its  contents,  or  manufacture  anything  it  may  describe.  It  may  not  be reproduced, disclosed, or used without the specific written authorization of Janteq Corporation. Diversions contrary to the laws of the U.S. prohibit.
Janteq Corporation  Document Revisions BHDTX-S-TWINTX-HP-AB User Manual  i CAUTION 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.        PROPRIETRY NOTICE AND LIABILITY DISCLAIMER The information disclosed in this document, including all designs and related materials, is the valuable property of JANTEQ CORPORATION. JANTEQ CORPORATION, reserve all patent, copyright and other proprietary rights to this document, including all design, manufacturing,  reproduction, use, and sales rights thereto, except to the extent said rights are expressly granted to others. To allow for design and specification improvements, the information in this document is subject to change at any time, without notice. Reproduction of this document or portions thereof without prior written approval of JANTEQ CORPORATION is prohibited.        FCC RF Exposure Compliance FCC RF exposure compliance must be addressed at the time of licensing, as required by the responsible FCC Bureau(s), including antenna co-location requirements of §1.1307(b)(3). The applicable exposure limits, to demonstrate compliance, are specified in FCC Part 1.1310. Additionally, the installer of the antenna to be used with this transmitter may be required to perform an MPE evaluation and an Environmental Assessment (EA) of the location at the time of licensing per CFR 47 Part 1.1307. Fixed mounted antenna(s) that are co-located with other antenna(s) must satisfy the co-location requirements of Part 1.1307 for satisfying RF exposure compliance.
Janteq Corporation  Document Revisions BHDTX-S-TWINTX-HP-AB User Manual  ii Document Revisions Author  Description  Date  Revision JP/TC  Initial release  08/10/2011  A
Janteq Corporation  Table of Contents BHDTX-S-TWINTX-HP-AB User Manual  iii Table of Contents 1.0 Overview ............................................................................................................................................. 1 1.1 ...................................................................... Introduction to the BHDTX-S-TWINTX-HP-AB  ...................................................................................................................................................... 2 1.2 ................................................................................ BHDTX-S-TWINTX-HP-AB Components ...................................................................................................................................................... 3 1.3 ........................................................................................................................ Key Features ...................................................................................................................................................... 5 1.4 ......................................................................... Programming the Transmitter Prior to Use ...................................................................................................................................................... 6 2.0 Basic Operation ................................................................................................................................... 7 2.1 .......................................................................... Connecting and Powering the Transmitter ...................................................................................................................................................... 8 2.2 .......................................................................................................................... Home Page ...................................................................................................................................................... 9 2.3 .................................................................................................. Accessing the User Menus .................................................................................................................................................... 10 2.4 ...................................................................................................... User Menu Descriptions .................................................................................................................................................... 10 3.0 Administrative Setup ......................................................................................................................... 13 3.1 .................................................................................... Accessing the Administrator Menus .................................................................................................................................................... 13 3.2 .......................................................................................................... Working with Profiles .................................................................................................................................................... 15 3.3 .................................................................................................. ADMIN Menu Descriptions .................................................................................................................................................... 15 4.0 Connections ....................................................................................................................................... 28 4.1 .......................................................................................................... Antenna Connections .................................................................................................................................................... 28 4.2 ............................................................................................................... Cable Connections .................................................................................................................................................. 288
Janteq Corporation  Table of Contents BHDTX-S-TWINTX-HP-AB User Manual  iv 5.0 Transmitter Programmer Application ............................................................................................... 32 5.1 ......................................................................................................... System Requirements .................................................................................................................................................. 333 5.2 .......................................................................................................................... Installation .................................................................................................................................................. 333 5.3 .............................................. Connecting the Transmitter and Saving the Configurations .................................................................................................... Error! Bookmark not defined.3 5.4 ......................................................................................................................... Online Help .................................................................................................... Error! Bookmark not defined.4 Appendix A: ................................................................................................................. Acronyms  355 Appendix B: .............................................................................................. Technical Specifications  377 Appendix C: ..................................................................................Dimensions / Wiring Diagram Error! Bookmark not defined.
Janteq Corporation  Overview BHDTX-S-TWINTX-HP-AB User Manual  1 1.0  Overview  This chapter provides a general description of the BHDTX-S-TWINTX-HP-AB digital microwave transmitter, including: • Introduction to the BHDTX-S-TWINTX-HP-AB • Illustration of the BHDTX-S-TWINTX-HP-AB components • Key features of the transmitter • Initial programming of the transmitter
Janteq Corporation  Overview BHDTX-S-TWINTX-HP-AB User Manual  2 1.1 Introduction to the BHDTX-S-TWINTX-HP-AB Transmitter The BHDTX-S-TWINTX-HP-AB is a high-power digital transmitter using COFDM modulation and MPEG-4 encoding. In addition to the normal DVB-T bandwidths of 6, 7, and 8 MHz, the radio is available with the narrow band options of 1.25, 2.5, and 5 MHz. The new line of transmitters can cover multiple bands in one radio and can be ordered in either the L, S, or C models.  The attractive ruggedized base unit is packed with features. The remote control unit has a 2” high resolution color display provides crisp full frame rate pictures for video confidence and the display of the base unit’s interactive menus. Local menu navigation is through the remote control unit’s front panel.  Four tactile buttons offer user or administrative-level access. All Janteq radios use a main profile H.264 codec capable of IBP. This has been further enhanced by adding a striping technique to create an ultra-low delay option. As a result, the user has a wide range of transmission options: • Low delay (≤ 50 mS) offers reasonable quality for reasonable bandwidth. (Optional) • Normal delay (≈130 mS) offers good quality for reasonable bandwidth. The base unit features optional full IP connectivity that can provide streaming video at variable bitrates, along with user data, telemetry, and interfaces to the remote control unit.
Janteq Corporation  Overview BHDTX-S-TWINTX-HP-AB User Manual  3 1.2 BHDTX-S-TWINTX-HP-AB Components     BHDTX-S-TWINTX-HP-AB Remote Control Unit 1 Color screen. View video and display the transmitter’s menus. 2 Escape (ESC) button. Press to escape out of a current menu function shown on the screen. 3 Up and down arrow buttons. Press to navigate through menu options shown on the screen. 4 Enter (ENT) button. Press to select a menu option selected on the screen. 5 Connector for connection to the base unit.    1 2 3 4 5
Janteq Corporation  Overview BHDTX-S-TWINTX-HP-AB User Manual  4        BHDTX-S-TWINTX-HP-AB Base Unit 1 Video Input Ports: Y (Composite, S-Video, Component), C/PB (S-Video/Component), PR (Component), HDSDI (SD/HD Serial) 2 RF Output Connectors: RF1, RF2 3 Remote Control Unit Connector: P1 4 Serial I/O Connector: P2 5 Audio Input Connector: P3 6 Power Connector: P4 2 2 3  4  5  6 1 1 1 1
Janteq Corporation  Overview BHDTX-S-TWINTX-HP-AB User Manual  5 1.3 Key Features The BHDTX-S-TWINTX-HP-AB transmitter offers the following key features: • Available in L, S, or C bands • DVB-T bandwidths of 5, 6, 7, and 8 MHz normal, with 1.25 and 2.5 MHz optional • Bandwidth efficient H.264 IBP encoding, with MPEG-2 optional • Main profile encoder with IBP and ultra-low latency modes optional • User friendly controls with 2” full frame high resolution LCD for video monitoring and spectacular menu graphics • Flexible interface for  Composite, Y/C (S-Video), Y/PB/PR (Component), SD/HD SDI • Accommodates wide range of video formats to 1080P/30, menu selectable • High power RF output • Stylish machined aluminum housing with excellent RFI/EMI suppression • Low latency, ≤ 4 frames end to end with ultra-low latency available ≈ 50mS optional • Internal audio/video test sources • Accommodates a wide range of audio inputs from -60dBm to +18dBm with Mic/Line, Tone, and Embedded SDI, balanced or unbalanced with mic phantom power • Audio limiter for improved audio dynamic range
Janteq Corporation  Overview BHDTX-S-TWINTX-HP-AB User Manual  6 1.4 Programming the Transmitter Prior to Use Before using the transmitter, an administrator must program it for use. Preset configuration and monitoring are enabled through the Windows-based Transmitter Programmer application. Refer to the chapter Transmitter Programmer Application on page 32 for more information.
Janteq Corporation  Basic Operation BHDTX-S-TWINTX-HP-AB User Manual  7 2.0 Basic Operation This chapter explains how to perform basic operations and use the basic menu functions on the BHDTX-S-TWINTX-HP-AB, including: • Connecting and powering the transmitter • Description of the transmitter’s home page • Accessing the user menus • Description of the user menus
Janteq Corporation  Basic Operation BHDTX-S-TWINTX-HP-AB User Manual  8 2.1 Connecting and Powering the Transmitter To operate the transmitter, you must first make the following connections: • Connect the power cable provided to a suitable supply. • Connect suitable audio and video signals to the transmitter. • Connect the desired microwave antennas to the RF outputs. • Connect the remote control cable to the remote control unit. Refer to chapter Cable Connections on page 28 for more information on connections and voltage requirements. When powered, the transmitter begins to initialize and will automatically reset to the last used preset.    The video screen on the remote control unit will light up.  Wait for the transmitter to finish initializing. The home page opens, showing the overall setup of the transmitter.
Janteq Corporation  Basic Operation BHDTX-S-TWINTX-HP-AB User Manual  9 2.2 Home Page                                                                   Home Page Indicators with Explanation of Examples 1 Channel. Channel A1r in the BAS channel plan. 2 Audio Input. Audio input is selected for Mic. 3 Video Input. Type of video is set to SDI. 4 Video Format. Video format is set to 720p. 5 OFDM Payload. OFDM payload is 15.6 Mb. 6 Input Voltage. Input voltage is at 28.1 V. Input voltage text will appear GREEN when input voltage is above 20V and RED when it drops below this level. 7 ALARM appears when there is a warning (check the transmitter’s alarm page for more information when an alarm appears). 8 Frequency and Band. Frequency is 2.245 GHz, and the band is S-Band. 9 Profile Name. No profile is being used. If a profile is being used, the name appears. 10 PA1. PA1 is OFF (antenna icon   appears when ON). 11 PA2. PA2 is OFF (antenna icon   appears when ON). 12 Power Level. The RF out power shows one green bar (≥1.0 W). Two green bars indicate medium (2.5W).  Three green bars indicate higher power (≥5.0 W).  STDBY appears when the unit is in standby mode (RF output is disabled).  NOTE:  Antenna icons disappear when unit is in standby. 13 Input Audio Level. The two audio channels are shown in dBfs (dB full scale, +18 dBm) on a bar graph. The bars turn yellow above -18 dBfs and red above -6 dBfs.     1 2 3 4 5 6 7 12 13 11 8 10 9
Janteq Corporation  Basic Operation BHDTX-S-TWINTX-HP-AB User Manual  10 2.3 Accessing the User Menus The user menus provide an interface for the user to control non-administrator functions. To access the user menus: 1 With the transmitter powered on, press and hold the ENT button until the popup menu appears:                                                                                     2 Press the up and down arrow buttons on the transmitter to highlight the menu you want to work with. 3 With the appropriate menu highlighted, press the ENT button to access the selected menu. 4 To work with any menu, simply use the up and down arrow buttons to select different submenus and menu options. Press the ENT button to select the highlighted submenu or menu option. Press the ESC button if you want to cancel and return to the previous screen. 2.4 User Menu Descriptions The available user menus include: • MONITOR • CHANNEL • PROFILES • TX PWR • ADMIN   2.4.1 MONITOR The MONITOR menu displays the video monitor, which shows the video as it is offered to the encoder. Loss of video would result in a blue field or color bars with the transmitter’s service name overlaid. You can take the following actions with the video monitor open:
Janteq Corporation  Basic Operation BHDTX-S-TWINTX-HP-AB User Manual  11 • Press the up arrow button to crop the video to fill the screen. • Press the down arrow button to return the video to its original aspect ratio. • Press the ESC button to return to the main screen. 2.4.2 CHANNEL The CHANNEL menu allows you to select the channel number in a given channel plan for the selected Band. You can take the following actions with this feature open: • Select Channel from the menu and press Enter. The channel number on the Home Page will start flashing.  • Use the Up/Down arrows to find the desired channel number and press Enter to select. 2.4.3 PROFILES The PROFILES menu allows you to select one of thirty two profiles that have been preconfigured on the transmitter and are held in memory. PROFILES contain all the parameters, from type of input format to transmitter bandwidth that you will need, along with the Channel number, to define the radio. You can take the following actions with this feature open: • Press the up and down arrow buttons to highlight a preconfigured profile, and then press the ENT button to select that profile. Pressing ENT again will give you the choice of Recall, Store or Name. • Selecting Recall and pressing enter will load that profile onto the selected Channel. Use ESC to return to the Home screen. • Selecting Store and pressing ENT will load any new profile that you may have created into that profile position. CAUTION, this action will permanently erase the original profile memory held in that position. • Selecting Name and pressing ENT twice will allow you to set a name associated with that profile. Use the Up Down arrows and ENT to select an eight character alpha numeric name. • Pressing ESC before ENT will allow you to back out of the selection leaving the field unchanged. 2.4.4 TX POWER The TX POWER menu allows you to select high (5.0 W), medium (2.5 W) or low (1.0 W) RF output power on the transmitter.
Janteq Corporation  Basic Operation BHDTX-S-TWINTX-HP-AB User Manual  12 2.4.5 ADMIN The ADMIN menu allows you to access all of the administrator menus that are discussed in the next chapter. If the transmitter is in user mode many of the parameters in the menu will be grayed-out allowing you to read but not change the parameter. If this is the case, you will require a three digit PIN, which you must enter to gain access to the full administrator menu.
Janteq Corporation  Administrative Setup BHDTX-S-TWINTX-HP-AB User Manual  13 3.0 Administrative Setup This chapter explains how to perform administrator operations by using the administrator menu functions on the BHDTX-S-TWINTX-HP-AB, including: • Accessing the administrator menus • Working with profiles • Description of the administrator menus 3.1 Accessing the Administrator Menus You can configure the transmitter by using the administrator menus. To work with all these menus you must have administrator access with the three-digit PIN. This is the PIN set through the Transmitter Programmer application. 324 is the factory PIN default. To access ALL the administrator menus: 1 With the transmitter powered on, press and hold the ENT button until the popup menu appears:                                                                                       2 Press the up and down arrow buttons on the transmitter to highlight the ADMIN menu. 3 With the ADMIN menu highlighted, press the ENT button. From the drop down menu select Systems and from the subsequent menu select Administrator. The transmitter prompts you to enter a PIN:
Janteq Corporation  Administrative Setup BHDTX-S-TWINTX-HP-AB User Manual  14                                                                                                                                                                                                                       4 Enter the three-digit PIN. To enter each of the three digits in the PIN, use the up and down arrow buttons to highlight each number, and then press the ENT button to select the number. Repeat this for each number. When you enter the correct PIN, there will then be three options available Always On, Temporary, and Off:                                                         Always On - Administrator-level access is on, even when the unit is power cycled Temporary - Administrator-level access is on until the next power cycled Off - Turn Administrator-level access off
Janteq Corporation  Administrative Setup BHDTX-S-TWINTX-HP-AB User Manual  15 5 To work with any menu, simply use the up and down arrow buttons to select different submenus and menu options. Press the ENT button to select the highlighted submenu or menu option. Press the ESC button if you want to cancel and return to the previous screen. 3.2 Working with Profiles Due to the large number of parameters that can be changed in the transmitter, 32 profiles can be stored to aid in the setup of the unit. Profiles can be chosen with various bandwidths, modulation format and guard intervals to accommodate the link path. Once the channel has been selected a profile can be attached that best suits the path. If you are an end user, many of these parameters within the profile can be further changed to suit the mission and if you have the required PIN you will have access to all the features.  3.3 ADMIN Menu Descriptions  This section explains each of the ADMIN menus and includes tables to describe each of the submenus and menu options. The R/W column for each row specifies whether the corresponding option is readable (to view information), writable (to set a preference), or both. • RF Setup • Modulation • Video Setup • Audio Setup • Profiles • System • Alarms • SW Version
Janteq Corporation  Administrative Setup BHDTX-S-TWINTX-HP-AB User Manual  16 3.3.1 RF Setup The RF Setup menu allows you to set up the RF parameters.     The following table shows the RF Setup submenus and options: Submenu  R/W  Description Frequency  R/W  Allows you to select the following submenu options: Frequency: Allows you to take the transmitter “off channel.” You can  select  the  frequency  within  the  limits  specified  in  the band but channel plan # will not show unless it complies. Channel:  Select  a  channel  number  that  corresponds  to  the Channel plan for that band. Band: Select the band, which will update the selection of channels available. There can be a maximum of four bands defined, as specified by the channel plan for the particular model. Bandwidth  R/W  Select a bandwidth. Choices include 5, 6, 7, or 8 MHz, with 1.25 and 2.5 optional TX Power  R/W  Sets the transmitter output power to set values for low, medium, or high or to a relative value (0-51), 51 being the highest output when Auto has been turned off in the Systems/ Power control menu. PA Control    This gives you the choice of either RFs on or either RF off. X-Factor    Specify a percentage ranging 0-100%.
Janteq Corporation  Administrative Setup BHDTX-S-TWINTX-HP-AB User Manual  17 3.3.2 Modulation  The Modulation menu allows you to set the DVB-T modulation parameters. The following table shows the Modulation submenus and options: Submenu  R/W  Description Constellation  R/W  Sets the DVB-T constellation. Options include QPSK, 16 QAM, or 64 QAM. Code Rate  R/W  Sets the DVB-T inner code (Viterbi) rate. Options include 1/3, 2/3, 3/4, 5/6, and 7/8. Guard Interval  R/W  Sets the DVB-T guard interval. Options include 1/32, 1/16, 1/8, and 1/4. Spectrum  R/W  Sets the spectrum inversion to allow for heterodyning receivers. Normal – carrier 0 is lowest in output frequency. Inverted – carrier 0 is highest in output frequency 3.3.3 Video Setup The Video Setup menu allows you to manipulate various video input settings and configure the video encoder. The following table shows the Video Setup submenus and options:
Janteq Corporation  Administrative Setup BHDTX-S-TWINTX-HP-AB User Manual  18 Submenu  R/W  Description Input  R/W  Sets the input source for video into the encoder. You can select the following options: HD/SD SDI: SD/HD SDI from the BNC connector. Composite: Composite SD video from the BNC connector. Selecting composite when in HD mode results in a popup warning. Y Pr Pb: Component video (SD or HD). Test  Modes:  Disconnects  input  from  the  connectors  and  uses internal test bars instead. Ext ASI (BNC): Disables the encoder and takes a DVB-ASI transport stream  from  the  BNC  connector.  Then  uses  that  as  the modulation  source,  after  performing  the  necessary  PCR  re-stamping and rate adaptation. Format  R/W  Sets the video mode for the encoder. When you select this submenu, the transmitter displays the following additional submenus: Format: Sets the video standard the transmitter should expect at the  input  connector,  configures  the  test  bar  generator  (if applicable),  and  configures  the  encoder.  The  selection  you make for this submenu locks the allowed options that you can select for the Frame Rate submenu (discussed below). Frame Rate: Where applicable, enables changes in the frame rate. This  submenu  is  interlocked  with  the  Format  submenu (discussed above) so that you can select only valid frame rates for the selected format.  The following table shows the valid format/frame rates: Hz  NTSC  PAL  720p  1080i  1080p 23.98              YES 24              YES 25     YES     YES  YES 29.97  YES        YES  YES 30           YES  YES 50        YES       59.94        YES       60        YES        Test Modes    Sets the test pattern for the internal test bar generator. You can select the following options: Test Off: Turns off the test pattern generator. SMPTE Bars: SMPTE 75% bars, with pong. Zone Plate: Zone plate, with pong over SMPTE bars. Full Zone Plate: Zone plate over full screen. Lip  Sync:  Black  field  with  1  frame  white  field  once  per  second, coinciding with 1 kHz tone burst on white field.
Janteq Corporation  Administrative Setup BHDTX-S-TWINTX-HP-AB User Manual  19 Submenu  R/W  Description Video Loss    Sets the behavior of the transmitter when no video or an invalid video is present at the input and the encoder is enabled. You can select the following options: No Change: No video present: Leaves the encoder running with no video input. Bars: After a timeout, switch to internally generated bars (format determined by the selected Test Modes submenu option). Blue:  After  a  timeout,  switches  to  internally  generated  blue screen. Black:  After  a  timeout,  switches  to  internally  generated  black screen. Enc1 Options  R/W  Sets the video options for the first video encoder. When you select this submenu, the transmitter displays the following additional submenus: Reduced  Frame  Rate:  Reduces  the  encoded  frame  rate  to  the option  you  select,  allowing  you  to  increase  image  quality and/or  reduced  the  required  bandwidth.  Options  include normal, 15, 10, 8, 4, 2, and 1 fps. I/P  GOP:  Configures  the  encoder  GOP  structure.  The  options available for this submenu depend on the delay mode: - Normal Delay options include IP, IBP, and IBBP. - Low Delay option is IP. GOP  Size:  Sets  the  GOP  size  to  the  option  you  select.  Options include 5, 10, 30, 50, and 100. Profile: Sets the h.264 encoding profile. Options include baseline, main, and high. Codec: Sets the codec to use for video encoding. Options include: - H.264: Can be used for both RF and network streaming. - Motion JPEG: Can be used only for network streaming. If this  option  is  selected,  the  encoder  1  video  stream  will not be transmitted over RF. MJPEG Min Quality: Sets the minimum quality to use when Motion JPEG  is  used  for  codec.  Setting  a  lower  value  reduces  the required  bandwidth,  while  setting  a  higher  value  increases the  required  bandwidth.  Options  include  0,  25,  50,  75,  and 100. MJPEG Max Quality: Set the maximum quality to use when Motion JPEG  is  used  for  codec.  Setting  a  lower  value  reduces  the required  bandwidth,  while  setting  a  higher  value  increases the  required  bandwidth.  Options  include  0,  25,  50,  75,  and 100. Enc2 Options  R/W  Sets the video options for the second video encoder. Note that these options are disabled if the delay mode is set to Low Delay. When you select this submenu, the transmitter displays the following additional submenus: Reduced Frame Rate: Reduces the encoded frame rate to increase image  quality  and/or  reduced  the  required  bandwidth.
Janteq Corporation  Administrative Setup BHDTX-S-TWINTX-HP-AB User Manual  20 Submenu  R/W  Description Options include normal, 15, 10, 8, 4, 2, and 1 fps. Video Scaling: Scales the video to reduce the required bandwidth. The  maximum  image  size  is  NTSC,  which  means  that  if  the video source is HD, then the 2nd encoder will scale the image to NTSC or smaller. Options include QCIF, CIF, and NTSC. Bitrate: Enables the second encoder, and sets the maximum video bitrate. To disable the second encoder, set the bitrate to Off. Options include  2000,  1000, 500,  400,  300, 200, 100,  and  50 kbps. I/P GOP: Sets the GOP format. Options include IP, IBP, and IBBP. GOP Size: Sets the GOP size. Options include 5, 10, 30, 50, and 100. Codec: Sets the codec to use for video encoding. Options include: - H.264: Can be used for both RF and network streaming. - Motion JPEG: Can be used only for network streaming. If this  option  is  selected,  the  encoder  2  video  stream  will not be transmitted over RF. MJPEG Min Quality: Sets the minimum quality to use when Motion JPEG  is  used  for  codec.  Setting  a  lower  value  reduces  the required  bandwidth,  while  setting  a  higher  value  increases the  required  bandwidth.  Options  include  0,  25,  50,  75,  and 100. MJPEG Max Quality: Set the maximum quality to use when Motion JPEG  is  used  for  codec.  Setting  a  lower  value  reduces  the required  bandwidth,  while  setting  a  higher  value  increases the  required  bandwidth.  Options  include  0,  25,  50,  75,  and 100. Encoder Options  R/W  Sets the global encoder options. When you select this submenu, the transmitter displays the following additional submenus: Delay: Sets the delay mode. Options include: - Normal Delay: Puts the encoder in normal delay mode. - Low Delay: Puts the encoder in low delay mode (latency depends on encoder capabilities and video format). Streaming  Options:  Specifies  which  video  and  audio  encoder streams  to  transmit  via  RTP  on  the  Ethernet  port.  Options include: - Video  Select:  Sets  encoder  1  or  encoder  2  as  the streaming source. Options include encoder 1 and encoder 2. - Audio Select: Sets the 1st  or 2nd audio  pair  or turns  off audio  streaming.  Options  include  none,  audio  0,  and audio 1. Frame Counter:  When set  to  On, this option will overlay  a  frame counter on the video. Options are off and on. Encoder Mode: Sets the overall encoder mode, whether the unit is used  as  an  encoder  to  ASI  or  as  an  encoder  to  RF.  Options include:
Janteq Corporation  Administrative Setup BHDTX-S-TWINTX-HP-AB User Manual  21 Submenu  R/W  Description - Encode  To  RF:  Enables  modulator  and  sends  encoded video out as DVB-T microwave. - Encode  To  ASI:  Disables  modulator  and  sends  encoded video out as DVB-ASI on the ASI output connector. PID  Edit:  Allows  you  to  manually  adjust  the  PIDs  within  the transport  stream,  if  used  as  an  encoder.  Has  no  effect  if external ASI input is selected. No checks are made to ensure that  PIDs  do  not  clash  (nothing  stops  you  from  having  two PIDs with the same value). PIDs that can be changed include: - Vid0 PID: 0x0020-0x1ffe - Vid1 PID: 0x0020-0x1ffe - Aud0 PID: 0x0020-0x1ffe - Aud1 PID: 0x0020-0x1ffe - PMT PID: 0x0020-0x1ffe - PCR PID: 0x0020-0x0ffe Service:  Specifies  the  service  ID,  service  name,  and  service provider for insertion into the SDT table. The service name is also used when test patterns are displayed. Specify up to 16 characters for service name and service provider. SDI Glitch Detect: When SDI input is selected, the video encoder is reset  when  the  device  detects  the  SDI  input  has  been connected. If a particular SDI device is causing the transmitter to intermittently reset its video encoder,  the  reset detection can be disabled. Options include off and on. 3.3.4 Audio Setup    The Audio Setup menu allows you to configure the audio for the transmitter. Some transmitters have encoders that accommodate more than one audio pair. The following table shows the Audio Setup submenus and options:
Janteq Corporation  Administrative Setup BHDTX-S-TWINTX-HP-AB User Manual  22  Submenu  R/W  Description Audio 1 Left  R/W  Configures the left audio channel of the analogue audio pair. When you select this submenu, the transmitter displays the following additional submenus: Source: Selects the audio to be used by the encoder. It is ignored when  the  transmitter  is  in  external  ASI  input.  Options include: - Off: Disables the audio input for the analogue audio pair.  - Mic: Sets the analog input to microphone level. - Line: Sets the analog input to line level. - Embedded SDI: De-embeds all four audio pairs from the input SDI. It also sets the Audio 1 left & Right to the Audio 1 embedded source. - Tone: Sets 1 kHz - 20 dBfs tone for left/right on all  four channels. - Beep: Sets 1k Hz - 20 dBfs beep (once per second) on all four channels. - Tone & Beep: Sets 1 kHz - 20 dBfs tone on left and beep on right. Level:  Enables  analog  audio  gain  to  be  adjusted.  Digital  gains (embedded  SDI  and  test  tones)  cannot  be  adjusted. Microphone and line  level inputs can be adjusted from 0  to  -69 dB reference level (corresponding to 0 to 69 dB gain). Phantom:  Enables  and  disables  5  V  phantom  power  on  channel one or on both of the audio pairs. Options include off, single (Unbalanced), and double (Balanced Mic). Limiter:  Enables  an  audio  limiter  to  be  placed  in/out  of  circuit. Options include off and on. (Limiter works -8 to 0dBfs) Bal/Unbal:  Allows  the  microphone  audio  to  be  balanced (differential)  or  unbalanced  (single  ended).  This  setting affects  both  the  left  and  right  channel.  Options  include unbalanced and balanced. Audio 1 Right  R/W  Configures the right audio channel of the analogue audio pair. When you select this submenu, the transmitter displays the following additional submenus: Source: Selects the audio to be used by the encoder. It is ignored when  the  transmitter  is  in  external  ASI  input.  Options include: - Off: Disables the audio input for the analogue audio pair. This option disables the Audio 1 Left source as well. - Mic: Sets the analog input to microphone level. - Line: Sets the analog input to line level. - Embedded SDI: De-embeds all of the first audio pair from the input SDI.  It also sets the Audio 1 left & Right to the Audio 1 embedded source.
Janteq Corporation  Administrative Setup BHDTX-S-TWINTX-HP-AB User Manual  23 Submenu  R/W  Description - Tone: Sets 1 kHz - 20 dBfs tone for left/right. - Beep: Sets 1k Hz - 20 dBfs beep (once per second). - Tone & Beep: Sets 1 kHz - 20 dBfs tone on left and beep on right. Level:  Enables  analog  audio  gain  to  be  adjusted.  Digital  gains (embedded  SDI  and  test  tones)  cannot  be  adjusted. Microphone and line  level inputs can be adjusted from 0  to  -69 dB reference level (corresponding to 0 to 69 dB gain). Phantom:  Enables  and  disables  5  V  phantom  power  on  channel one or on both of the audio pairs. Options include off, single (Unbalanced), and double (Balanced Mic). Limiter:  Enables  an  audio  limiter  to  be  placed  in/out  of  circuit. Options include off and on.  (Limiter works -8 to 0dBfs) Audio 2 L/R  (For Transmitters with two Audio pairs) R/W  Configures the second audio pair. When you select this submenu, the transmitter displays the following additional submenu: Source: Selects the audio to be used by the encoder. It is ignored when  the  transmitter  is  in  external  ASI  input.  Options include: - Off: Disables the audio input for the second audio pair. - Embedded  SDI:  De-embeds  the  second  audio  pair  from the input SDI. - Tone: Sets 1 kHz - 20 dBfs tone for left/right. - Beep: Sets 1k Hz - 20 dBfs beep (once per second). - Tone & Beep: Sets 1 kHz - 20 dBfs tone on left and beep on right. Audio Coding     R/W    R/W  R/W Sets the audio coding for both audio pairs. When you select this submenu, the transmitter displays the following additional submenus: Audio  Coding:  Sets  how  the  audio  is  encoded.  Options  include MPEG Layer II, AAC-LC, and linear audio. Bit  Rate:  Sets  the  audio  encoder  bitrate  for  MPEG  Layer  II  and AAC-LC. Options include 64, 128, 160, 192, 224, 256, 320, and 384 kbps. Sample Rate: Sets the sample rate for the audio encoding. Options include 32 and 48 kbps. 3.3.5 Profiles The Profiles menu allows you to manage up to 32 profiles on the transmitter. Profiles are discussed more in the section Working with Profiles on page 15.
Janteq Corporation  Administrative Setup BHDTX-S-TWINTX-HP-AB User Manual  24 3.3.6 System     The System menu sets global system options for the transmitter. The following table shows the System submenus and options:   Submenu  R/W  Description Menu Time out  R/W  Sets the amount of time after which the menu times out if no key presses  are  detected.  After  the  menu  times  out,  you  can press and hold the ENT button for three seconds to activate the menu. Options include none, 10, 20, and 30 seconds. LCD Brightness  R/W  Sets the LCD brightness. Options include: Off  Mode:  Turns  the  display  off  after  a  timeout  until  a  key  is pressed. Day Mode: Sets the LCD to maximum brightness. Night Mode: Dims the display after a timeout until a key is pressed. User Data  R/W  Manages settings related to the RS485 user data side channel, available on connector P1. When you select this submenu, the transmitter displays the following additional submenus: Format:  Sets  the  user  data  format  within  the  transport  stream. Options include: - Standard: Standard user data format. - DOJ: DOJ-specified user data format. Baud Rate: Sets the baud rate. Options include User Data off or a range from 1,200 to 921,600 bits per second. Rx  Sense:  Allows  the  sense  of  the  RS485  balanced  wires  to  be inverted (if cabling is incorrect). Options include normal and inverted. Parity: Sets the parity. Options include none, even, and odd. Data  Bits:  Sets  the  number  of  data  bits.  Options  include  5,  6,  7, and 8 bits.
Janteq Corporation  Administrative Setup BHDTX-S-TWINTX-HP-AB User Manual  25 Submenu  R/W  Description Remote Control  R/W  Manages settings for the remote control interface available on the power input connector. When you select this submenu, the transmitter displays the following additional submenus: Interface: Sets the interface. Options include RS-232 and RS-485. Baud Rate: Sets the baud rate. Options include a range from 1200 to 115200 bits per second. Power Control  R/W  Configures the PA to be in closed loop (auto on) or open loop (off) power control mode. This option affects the display in the transmitter power control. Options include: TXPwr Auto Off: Turns off the closed loop, and runs the PA in open loop mode. The power control page displays a number from 0 – 51, with 51 being maximum power. TXPwr Auto On: Turns on the closed loop. The power control page displays the calibrated power levels as stored in the head. Tuning Step  R/W  Sets the tuning step size when tuning off channel. This does not affect the channels in the channel plan. Options include 100, 125, and 250 KHz. Factory Default  R/W  Restores all of the current settings on the transmitter back to factory defaults. Options include: No - resume ops: Do not continue the process of changing current settings.  Yes – defaults: Continue the process to clear all settings and set them to factory defaults, which will start the initializing process. Telemetry  R/W  Enables and disables telemetry insertion into the transport stream (parameters such as battery voltage, temperature, RF power, video input status, etc.). Options include: Enable: Insert telemetry. Disable: Disable telemetry. Security Key  R   Displays  the  digital  serial  number  and  the  license  type  for  the transmitter.
Janteq Corporation  Administrative Setup BHDTX-S-TWINTX-HP-AB User Manual  26 Submenu  R/W  Description Administrator  R/W  Sets your administrator mode preference. The menu system has two modes of operation, user or administrator. Each menu item has a read-only or read-write tag associated with it, which is defined in the Transmitter Programmer application. If a menu item is read-only, then in user mode, the menu mode can be viewed but not modified. In administrator mode, all menu items can be modified. If administrator mode is currently off, you will have to enter a 3-digit PIN, which is defined in the Transmitter Programmer application. 324 is the Factory PIN default. Once administrator mode is activated, the options include: Always on: Administrator mode is always enabled. Temporary:  Administrator mode is enabled until the  next power cycle.         Off: Administrator mode is disabled, and you must return to this page to enable administrator mode again. 3.3.7 Alarms                                                 The Alarms menu shows you any active alarms. The following table shows the possible alarms: Submenu  R/W  Description ENC Error  R  An error was detected with the encoder (typically if the encoder is not detected or if there is a comms fault to the encoder). Low Battery  R  The input voltage is below 20 V. FPGA Fault  R  Baseband FPGA fault, which is typically a comms error (FPGA not configured). ADV Fault  R  There is a comms fault to the component or composite video input chip. RF Fault  R  An invalid frequency has been selected, or there is a hardware fault of the RF.
Janteq Corporation  Administrative Setup BHDTX-S-TWINTX-HP-AB User Manual  27 Submenu  R/W  Description Over Temp  R  The unit is too hot. RF Unlock  R  The RF head reported a PLL that is unlocked, possibly because an invalid frequency has been entered. ASI Overrun  R  The external ASI is too fast for the modulator. 3.3.8 SW Version                                                                                                          The SW Version menu displays the current software version for the boards within the base unit and the remote control unit, including baseband, FPGA, Encoder, and Remote Control.
Janteq Corporation  Connections BHDTX-S-TWINTX-HP-AB User Manual  28 4.0 Connections This chapter explains the different wire connections for the transmitter, including: • Antenna connections • Cable Connections 4.1 Antenna Connections         Antennas are connected to the RF1 and RF2 connectors.  The RF1 and RF2 connectors are N-Type Female.  Always use 50Ω antennas with VSWR of at least 2:1 or better.  Although the unit can withstand open and short, permanent damage can occur if unit is left on without a proper 50Ω load/antenna. 4.2 Cable Connections The BHDTX-S-TWINTX-HP-AB transmitter base unit uses a 50-way connector to interface to the front panel. The RF outputs to a pair of N-type Female connector.  All video input connections are 75Ω BNC.  Power, Serial, Remote, and Audio interfaces use Amphenol Circular connectors.
Janteq Corporation  Connections BHDTX-S-TWINTX-HP-AB User Manual  29  4.2.1 RF Outputs The BHDTX-S-TWINTX-HP-AB transmitter base unit comes standard with dual RF outputs.  Although the RF output can withstand an open and a short, it is highly recommended to always operate the transmitter with a proper 50Ω load (such as 50Ω antennas) at each of the output. Connection  Connector Type  Function RF1  N-type (F)  RF1 Output RF2  N-type (F)  RF2 Output 4.2.2 Power Input and Remote Control Interface A four-pin Amphenol circular connector (P4) provides DC power.  The voltage input range is +20 to +30 VDC and is protected against reverse polarity.  A six-pin Amphenol circular connector (P1) provides interface to the remote control unit of the transmitter base unit.  The Remote Control Interface cable is included with the transmitter. Connection  Connector Type  Pin  Function POWER (P4) Amphenol PT02E-12-4P (M) A  +20 to +30 VDC B  +20 to +30 VDC C  GROUND D  GROUND   REMOTE (P1)    Amphenol 71-570122-06S (F) A  REMOTE DC B  CAN_L C  CAN_H D  GROUND E  ASI_P F  ASI_N
Janteq Corporation  Connections BHDTX-S-TWINTX-HP-AB User Manual  30 4.2.3 Serial Interface A 10-pin Amphenol Circular is provided for serial interfacing to the base unit.  This port can be an alternative to the remote control port and is used as a general serial software interface for upgrading and GUI connection. Connection  Connector Type  Pin  Function SERIAL (P2) Amphenol 71-570123-10P (M) A  USB +5V B  USB Data- C  USB Data+ D  GROUND E  USERDATA IN- F  USERDATA IN+ G  GROUND H  RS232 TX/RS485- J  RS232 RX/RS485+ K  GROUND 4.2.4 Audio Inputs A 10-pin Amphenol Circular is provided for the audio input.  Each balanced input is modulated onto their respective channel (CH1→RF1, CH2→RF2). Connection  Connector Type  Pin  Function AUDIO (P3) Amphenol 71-570123-10S (F) A  N/C B  N/C C  AUDIO CH1- D  AUDIO CH1+ E  GROUND F  AUDIO CH2- G  AUDIO CH2+ H  GROUND J  N/C K  GROUND
Janteq Corporation  Connections BHDTX-S-TWINTX-HP-AB User Manual  31  4.2.5 Video Video is brought in on four 75Ω BNC connectors. Depending on the format, one, two, or three connections may be required for the video input.  The input format is selectable through the Remote Control unit. Connection  Connector Type  contact  Function Y  75Ω BNC Center Pin  Composite Input Component/S-Video Luma Outer Shield  GROUND C/PB  75Ω BNC Center Pin  S-Video Chroma Component (Blue-Chroma) Outer Shield  GROUND PR  75Ω BNC Center Pin  Component (Red-Chroma) Outer Shield  GROUND HDSDI  75Ω BNC Center Pin  SD/HD Serial Digital Interface Input Outer Shield  GROUND
Janteq Corporation  Transmitter Programmer Application BHDTX-S-TWINTX-HP-AB User Manual  32 5.0 Transmitter Programmer Application The Janteq Transmitter Programmer is a Windows-based application that allows you to configure and monitor preset parameters for use on transmitters. This application enables you to interface with the BHDTX-S-TWINTX-HP-AB transmitter locally using a USB cable or remotely using an Ethernet connection. The Transmitter Programmer application is common to all Janteq’s new line of transmitters. The following screenshot shows the Transmitter Programmer application:
Janteq Corporation  Transmitter Programmer Application BHDTX-S-TWINTX-HP-AB User Manual  33 5.1 System Requirements Although the application has been developed for Windows XP and Windows Vista, it may also work with other operating systems.  However, support is provided only for Windows XP and Windows Vista. 5.2 Installation The application is provided on a CD. Use the following steps to install the application: 1 Insert the CD into the computer that you will use to program the transmitter. The setup utility starts automatically. 2 When the setup window opens, follow the on-screen instructions to install the application. 3 After the application is installed, you can access Tx Programmer on the Windows Start menu. 5.3 Connecting the Transmitter and Saving Configurations Before you can use the application with the transmitter, you must first connect the transmitter so that the application can communicate with it. Use the following steps to connect the transmitter to the application:  1 Physically connect the transmitter to your computer:  USB connection to Base Unit.  Using the optional USB/DB-9 serial cable (contact factory or email sales@janteq.com for optional serial USB/DB-9 cable), connect the base unit to the computer that is running the application.  Windows automatically loads the necessary driver.  USB connection via Remote Control Unit.  Using an optional USB Mini-B cable (available separately), connect the USB Mini-B cable from the computer that is running the application to the remote control unit while the remote control unit is connected to the base unit.  Windows automatically loads the necessary driver.  2 Apply appropriate power to the base unit. 3 Click on Connect USB button located at the top-left corner of the application window.   NOTE:  Connect Ethernet located at the top-right corner will not work.  Contact factory or email sales@janteq.com if Ethernet connectivity is desired.
Janteq Corporation  Transmitter Programmer Application BHDTX-S-TWINTX-HP-AB User Manual  34 5.4 Online Help Online help is installed with the application. For information on using the application, you can access the online help the following ways: • For help on entering information for a specific field, right-click the field and then click Help on the popup menu. You can also press [F1] on your keyboard. The help opens with the specific topic that describes the corresponding field. • For general information on the application (in addition to the specific field help discussed above), click the button with the help icon (question mark) at the top right of the application window. The help opens with an overview topic. With the online help open, you can navigate to different topics through the table of contents on the left. You can also use the search feature to find topics by keywords or phrases.
Janteq Corporation  Acronyms  BHDTX-S-TWINTX-HP-AB User Manual  35 Appendix A: Acronyms This appendix lists and describes the various acronyms used in the document. Name  Meaning ASI  Asynchronous Serial Interface  AV  Audio/Video AVC  Advanced Video Codec COFDM  Coded Orthogonal Frequency Division Multiplexing DVB-T  Digital Video Broadcast-Terrestrial FEC  Forward Error Correction FM  Frequency Modulation FPS  Frames per Second GOP  Group of Pictures HD  High Definition HDMI  High Definition Multimedia Interface HD-SDI  High Definition Serial Digital Interface IEC  International Electrotechnical Commission IO  Input/Output ISO  International Organization for Standardization LAN  Local Area Network LNA  Low Noise Amplifier MER  Modulation Error Ratio MPEG  Moving Picture Experts Group OFDM  Orthogonal Frequency Division Multiplexing OSD  On Screen Display
Janteq Corporation  Acronyms  BHDTX-S-TWINTX-HP-AB User Manual  36 Name  Meaning PA  Power Amplifier PID  Packet Identifier PPM  Parts Per Million PWM  Pulse Width Modulation QAM  Quadrature Amplitude Modulation QPSK  Quadrature Phase-Shift Keying RF  Radio Frequency RS232  Serial Communication Port – RS232 Standard SD  Standard Definition SDI  Serial Digital Interface SD-SDI  Standard Definition Serial Data Interface SI  Service Information SMPTE  Society of Motion Picture and Television Engineers TS  Transport Stream TX  Transmitter USB  Universal Serial Bus VSWR  Voltage Standing Wave Ratio
Janteq Corporation  Technical Specifications  BHDTX-S-TWINTX-HP-AB User Manual  37 Appendix B: Technical Specifications This appendix provides a reference for the BHDTX-S-TWINTX-HP-AB transmitter’s technical specifications. RF Section Frequency Range  2000 to 2700MHz RF Power Levels  RF1: 1W, 2.5W, 5.0W (selectable) RF2: 1W, 2.5W, 5.0W (selectable) Frequency Stability  ± 2.5 ppm Tuning step size  100/125/250 kHz TX Standby  No RF Output (<-60 dB Reduction)  Modulation Mode COFDM  DVB-T 2K: 5 MHz, 6 MHz, 7 MHz, 8 MHz Optional Narrow Band  1.25 and 2.5 MHz Constellation  QPSK, 16 QAM, 64 QAM Code Rate  1/2, 2/3, 3/4, 5/6, 7/8 Guard Interval  1/32, 1/16, 1/8, 1/4 Spectrum Inversion  Programmable  Video Section Video Input Formats  NTSC, PAL,525i,480P, 720P,1080i (4:2:0), 1080p Video Frame Rates  23.98, 24, 25, 29.97, 30, 50, 59.97, 60 Hz Video Input Signals  Composite, Component (Y/PB/PR), S-Video (Y/C), SD/HD SDI Test Mode  SMPTE Color Bars, Zone plate DVB-ASI Input  SMPTE 299
Janteq Corporation  Technical Specifications  BHDTX-S-TWINTX-HP-AB User Manual  38 Video Section Composite Input  75Ω, 1Vp-p, NTSC / PAL HD/SD - SDI input  SMPTE 292 / 259M Level C (1.5Gb/s – 270Mb/s)  Encoder Compression Type  H.264/MPEG-4 AVC (MPEG-2 OPTIONAL) Compression Standard  ISO/IEC14496-10 Profile  Base, Main, and High System Latency, End-to-End Delay <130mS  Audio Section Audio Channels  1 Stereo Pair Menu Selectable Combinations  MIC/LINE Inputs: Selectable Soft Limit for Levels Greater +10 dBm Audio Range:-60 dBm to 18 dBm Max Input Level Audio Gain Control: Ch 1&2  0 dB – 69 dB Gain, Continually Variable by 1 dB Audio Coding  MPEG 1 Layer 2 Audio, ISO/IEC 13818-3 Linear PCM  MPEG-1 Layer 1 Audio Bit Rate  128 kb/s to 384 kb/s per Channel Audio Sample Rate  32 & 48 kHz Analog Audio Inputs  MIC / Line, Gain Selectable -60 to +18 dBm Frequency Response  40 Hz – 20 KHz: ± 3dB Audio THD  0.5% @ 1 KHz, +8 dBm Signal-Noise  > 60 dB Input Impedance  5K ohms Unbalanced, Mic. 600 ohms Bal’ for Line Mic Bias  5 Volts Tone Generator  Internal 400 Hz L, 1 kHz R Channel Tone Generator  User Data Channel User Data Channel  Transparent Data Pipe, up to 1 Mb/s, RS-485 Input
Janteq Corporation  Technical Specifications  BHDTX-S-TWINTX-HP-AB User Manual  39 Remote Control Unit Display  Hi Res. 2-Inch Color TFT Backlight  Adjustable Time Out: None, 10, 20, or 30 Seconds Indication  Presets, RF Output Level, Input Voltage, Audio Level, Full Color Video Display Alarms  Voltage and Temperature Profiles  32 User Defined Menu Selector  Tactile Up/Down, ESC/ENT Buttons Menu  Interactive User/Administrator Menu Tree Allowing Control of Presets, Frequency, RF Output Power, Modulation, Video Source, Audio Source, Audio Gains, Audio Modes, Video Format, and COFDM  Power Requirements Input Voltage Range  +20 TO +30 VDC – Under/Over Voltage and Reverse Polarity Protected Power Consumption  120VA (WATTS)  Physical Dimensions Base Unit  H 10.3” (262mm) x W 8.0” (203mm) x D 3.5” (89mm)  Remote Control Unit  H 4.1” (104 mm) x W 2.5” (64 mm) x D .72” (18 mm) Weight Base Unit   10.45 lbs. (4740 g) Remote Control Unit  0.35 lbs. (159 g)  Environmental Temperature  Operating: -10 to +50˚ C (Ambient) Storage: -30 to +85˚ C Relative Humidity  0.5 to 95.0% Non-Condensing
Janteq Corporation  Dimensions / Wiring Diagram  BHDTX-S-TWINTX-HP-AB User Manual  40 Appendix C: Dimensions / Wiring Diagram The illustration on the next three pages shows the dimensions of the BHDTX-S-TWINTX-HP-AB HD video transmitter base unit, remote control unit, and the wiring diagram of the base unit’s connectors.
Janteq Corporation  Dimensions / Wiring Diagram  BHDTX-S-TWINTX-HP-AB User Manual  41
Janteq Corporation  Dimensions / Wiring Diagram  BHDTX-S-TWINTX-HP-AB User Manual  42
Janteq Corporation  Dimensions / Wiring Diagram  BHDTX-S-TWINTX-HP-AB User Manual  43

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