COBHAM M2ECHPT Operation Manual
  1. Manuals
  2. Brands
  3. COBHAM Manuals
  4. Transmitter
  5. M2ECHPT
  6. Operation manual
COBHAM M2ECHPT Operation Manual

COBHAM M2ECHPT Operation Manual

Hide thumbs
Table of Contents

Advertisement

Quick Links

Download this manual
Messenger 2 Enhanced Compact High-Power Transmitter
Includes VEPA or Standard Power Amplifier
100-M0177X1
GMS Inc. doing business as Cobham Tactical Communications and Surveillance
(M2ECHPT)
OPERATIONS MANUAL
1 of 40
Cobham Tactical Communications and Surveillance
1916 Palomar Oaks Way, Suite 100, Carlsbad, CA 92008
Tel: 760-496-0055
FAX: 760-496-0057
www.cobham.com/tcs

Advertisement

Table of Contents
loading
Need help?

Need help?

Do you have a question about the M2ECHPT and is the answer not in the manual?

Questions and answers

Subscribe to Our Youtube Channel

Related Manuals for COBHAM M2ECHPT

Summary of Contents for COBHAM M2ECHPT

  • Page 1 Includes VEPA or Standard Power Amplifier OPERATIONS MANUAL Cobham Tactical Communications and Surveillance 1916 Palomar Oaks Way, Suite 100, Carlsbad, CA 92008 100-M0177X1 1 of 40 Tel: 760-496-0055 FAX: 760-496-0057 www.cobham.com/tcs GMS Inc. doing business as Cobham Tactical Communications and Surveillance...

  • Page 2: Table Of Contents

    5.1 Product Control & Status Monitoring Approach ............19 5.2 System Requirements ....................19 5.3 Connection ........................ 19 6. Initial Check Out ........................24 6.1 Getting Started ......................24 7. Specifications ........................... 26 100-M0177X1 2 of 40 GMS Inc. doing business as Cobham Tactical Communications and Surveillance www.cobham.com/tcs...
  • Page 3 Appendix A - IP Static Addressing and Interfacing to a Personal Computer ............. 32 A.1. Static Addressing ..........................32 A.2. DHCP (Dynamic Host Configuration Protocol) ................40 100-M0177X1 3 of 40 GMS Inc. doing business as Cobham Tactical Communications and Surveillance www.cobham.com/tcs...

  • Page 4: Revision History

    Revision History Revision Date Main Changes from Previous version Edited by Checked 29 June 2012 Initial Release T.G. 100-M0177X1 4 of 40 GMS Inc. doing business as Cobham Tactical Communications and Surveillance www.cobham.com/tcs...

  • Page 5: Important Warning And General Safety Information

    5. Do not substitute any antenna for the one supplied or recommended by the manufacturer. The installer is responsible for ensuring that the proper antenna is installed. 6. It should be noted that this device is an intentional radiator, hence: 100-M0177X1 5 of 40 GMS Inc. doing business as Cobham Tactical Communications and Surveillance www.cobham.com/tcs...
  • Page 6 8. Electro-Static Discharge (ESD) precautions should be observed as a safe practice. 9. The transmitter will generate considerable heat and is the responsibility of the end user to properly heat sink the device before using. 100-M0177X1 6 of 40 GMS Inc. doing business as Cobham Tactical Communications and Surveillance www.cobham.com/tcs...

  • Page 7: Acronyms

    Quadrature Phase Shift Keying Radio Frequency Receiver Signal-to-Noise Ratio Total Harmonic Distortion Standard Definition Serial Digital Interface Transmitter Volts (Direct Current) VEPA Very Efficient Power Amplifier 100-M0177X1 7 of 40 GMS Inc. doing business as Cobham Tactical Communications and Surveillance www.cobham.com/tcs...

  • Page 8: Introduction

    Please email the support section the airway bill/consignment number for tracking purposes. Depending on the nature of the fault, Cobham strives to repair the equipment and return it to the customer within 14 days of the item arriving at our workshops. Obviously it is impossible to accommodate for all types of faults and to manage 100% replacement part availability;...

  • Page 9: General System Information

    General System Information 3.1 Overview The M2ECHPT is a second generation AVC HD/SD COFDM transmitter that combines all the features and capabilities of Cobham Surveillance’s (CS’s) Messsenger 2 AVC HD/SD Transmitter with the additional features listed in the Key System Features section below. Key features include optional Dual...

  • Page 10: Theory Of Operation

    MPEG-2 which allows our link to provide superior coverage over a wider operating range! There are two core hardware configurations for M2ECHPT. The SD/HD-SDI configuration accepts up to two Standard Definition (SD) or High Definition (HD) 4:2:2 Digital Video (SD/HD SDI) or analog composite Video and Analog Stereo Audio Inputs (Mic or Line Level) and Embedded Audio (up to a total of two stereo pairs or four mono channels) set or programs.

  • Page 11: Figure 1 M2Echpt Link

    Messenger 2 AVC HD/SD Decoder Figure 1 M2ECHPT Link In 2K Mode the M2ECHPT uses standard DVB-T coding and modulation. DVB-T stands for Digital Video Broadcasting — Terrestrial; it is the DVB European-based consortium standard for the broadcast transmission of digital terrestrial television that was first broadcast in the UK in 1997. This system transmits compressed digital audio, video and other data in an MPEG transport stream, using coded orthogonal frequency-division multiplexing (COFDM or OFDM) modulation.

  • Page 12: Figure 2 Content Collection Format

    M2ECHPT’s control interface. The user can enable or disable the scrambling as well as choosing if the key is stored within the Tx or not via Cobham’s LAN WEB Page GUI. Encryption on/off is also available from the local control panel.

  • Page 13: Power Amplifiers (Standard Or Vepa)

    3.5 Power Amplifiers (Standard or VEPA) The M2ECHPT comes with either the VEPA or the Standard power amplifier. The VEPA (Very Efficient Power Amplifier) is Cobham/GMS’ newest design specifically targeted for COFDM modulation formats because of its high linearity and efficiency. Most of the connections using either the VEPA or the Standard PA are the same.

  • Page 14: Hardware Overview

    Hardware Overview The basic M2ECHPT transmitter hardware configuration is outlined in this section: 4.1 Front Panel The front panel consists of 3 fans designed to cool the unit. Figure 3 M2ECHPT Front View 100-M0177X1 14 of 40 GMS Inc. doing business as Cobham Tactical Communications and Surveillance...

  • Page 15: Rear Panel

    VEPA power amplifier. All other connections are the same. 4.3.1 RF Output The M2ECHPT uses a female “N” type bulkhead connector for its “RF OUTPUT” port. Note: Transmitters should not be powered on without a load. Doing so could cause damage to the output PA.

  • Page 16: Dc In

    4.3.2 DC IN Connector Type: 4 pin PTO, Male. The M2ECHPT accepts +12dc or +28Vdc input power (depending on configuration). GMS cable (780-C0219) is used to connect to the DC IN connector. See drawing 100-C0219 for power connections (Appendix B).

  • Page 17: Audio

    This connector provides an output for DVB-ASI Transport Streams. The output bit rate is 270 Mbps. The Transport Stream does not include the SI table, User-Data or AES encryption which is added later in the processng chain. 100-M0177X1 17 of 40 GMS Inc. doing business as Cobham Tactical Communications and Surveillance www.cobham.com/tcs...

  • Page 18: Klv Time Sync In

    Connector Type: BNC-F, 75 ohm This input is used to provide time-correlated KLV-1 and KLV-2 META data processing that is used in Airborne Surveillance Applications and Geospatial determination. 100-M0177X1 18 of 40 GMS Inc. doing business as Cobham Tactical Communications and Surveillance www.cobham.com/tcs...

  • Page 19: Software Overview

    The IP address of the transmitter must be known before launching an internet browser. The M2ECHPT’s are shipped out with a static IP address of 192.168.1.36. The M2ECHPT only supports IPv4 addressing. Using this address and an internet browser the user can access the internal M2ECHPT’s WEB server.

  • Page 20: Figure 6 Welcome Page

    Figure 5 Welcome Page Figure 6 Windows Security Login 100-M0177X1 20 of 40 GMS Inc. doing business as Cobham Tactical Communications and Surveillance www.cobham.com/tcs...

  • Page 21: Figure 8 Main Page - Lan Interface

    Figure 7 MAIN Page – LAN Interface 100-M0177X1 21 of 40 GMS Inc. doing business as Cobham Tactical Communications and Surveillance www.cobham.com/tcs...

  • Page 22: Figure 9 Configuration Groups Menu

    (or pull down box), click on the APPLY button and then the SAVE button if the change is to be permanent to the current group. Figure 8 Configuration Groups Menu 100- M0177X1 22 of 40 GMS Inc. doing business as Cobham Tactical Communications and Surveillance www.cobham.com/tcs...
  • Page 23  Encryption setups are available  RF power attenuation levels are available  Serial port setup is available  A STATUS page which provides real time update is available 100-M0177X1 23 of 40 GMS Inc. doing business as Cobham Tactical Communications and Surveillance www.cobham.com/tcs...

  • Page 24: Initial Check Out

    6.1 Getting Started Prior to installing the M2ECHPT into the desired target environment, an initial checkout should be performed to ensure proper operation of the unit. The initial checkout consists of configuring a basic High Power Messenger Digital link (HP-MDL) check out.

  • Page 25: Figure 10 High Power Link Setup

    Video Source Monitor Figure 9 High Power Link Setup  Install omni-directional antennas onto the M2ECHPT RF output port and downconverter(s) (d/c) RF(radio frequency) input port.  Attach the power cable (780-C0219) to the M2ECHPT.  Attach the RF cable from the downconverter IF (intermediate frequency) output port to the RF IN port of the receiver.

  • Page 26: Specifications

    Video format standards: NTSC or PAL Resolution @ Frame Rate (frames Format per second) 576i 720x576 @ 25/29.97 fps (PAL) 480i 720x480 @ 25/29.97 fps (NTSC) 100-M0177X1 26 of 40 GMS Inc. doing business as Cobham Tactical Communications and Surveillance www.cobham.com/tcs...
  • Page 27 Connector: 1.0/2.3 mm (75 Ohm) Modulation Modulation Type: COFDM w/QPSK, 16-QAM, or 64-QAM Standard: DVB-T compliant FEC: 1/2, 2/3, 3/4, 7/8 Guard Intervals: 1/32, 1/16,1/8,1/4 COFDM Carriers: 2K Carriers 100-M0177X1 27 of 40 GMS Inc. doing business as Cobham Tactical Communications and Surveillance www.cobham.com/tcs...
  • Page 28 UTC#1 is inserted into the pic timing SEI element of the NAL packets in the H.264’s output stream. The secondary M2ECHPT time stamp UTC#2 is a 64 bit value indicating the number of microseconds since August 1999 and is inserted into the unregistered user data SEI element.
  • Page 29  The MPEG-2 TS output of either EIA-422 (constant bit rate) or Ethernet format operates at a bit rate ranging from 128 kbps to 10.7Mbps adjustable in 1 kbps increments.  The M2ECHPT is able to operate with an external clock input from the RF communications data link as well as with its own internal clock source.
  • Page 30 30dBm (1 W) and therefore in emergencies or urgencies is possible to change the power to 40 dBm (10 W). Notes * When used in Ultra-Low Latency mode (Intra-Refresh) with Cobham’s Messenger 2 Decoders and Receiver Decoders. ** With 4 K High-Throughput Option on M2ECHPT...
  • Page 31 Development Phase 5 Implementation Version commercialized in Brazil 100-M0177X1 31 of 40 GMS Inc. doing business as Cobham Tactical Communications and Surveillance www.cobham.com/tcs...

  • Page 32: Figure 11 Interfacing Pc To M2Echpt

    PC to a static address with the same IP class (and network ID) as the M2ECHPT which is a class C (beginning octet is in the range of 192-223). By setting the PC to a static address with the same IP class and network ID it will recognize the M2ECHPT and it will be able to talk to it.

  • Page 33: Figure 12 Window's Start Button

     From the desktop click on the Windows start button and select the “Control Panel”. See Figure 11 below. Figure 11 Window’s Start Button 100- M0177X1 33 of 40 GMS Inc. doing business as Cobham Tactical Communications and Surveillance www.cobham.com/tcs...

  • Page 34: Figure 13 Control Panel W/Network & Internet Category

    See Figure 12 below. You may need to select the Control Panel “Category” view to see the picture similar to Figure 12. Figure 12 Control Panel w/Network & Internet Category 100- M0177X1 34 of 40 GMS Inc. doing business as Cobham Tactical Communications and Surveillance www.cobham.com/tcs...

  • Page 35: Figure 14 Network Adapter Settings

     Click on the “Change adapter settings” on the left side of the screen as shown Figure 13. Figure 13 Network Adapter Settings  Right click on the “Local Area Connection” icon (see Figure 14) and select properties. 100-M0177X1 35 of 40 GMS Inc. doing business as Cobham Tactical Communications and Surveillance www.cobham.com/tcs...

  • Page 36: Figure 15 Local Area Connection Icon

    Figure 14 Local Area Connection Icon 100- M0177X1 36 of 40 GMS Inc. doing business as Cobham Tactical Communications and Surveillance www.cobham.com/tcs...

  • Page 37: Figure 16 Internet Protocol Version 4

     Select the “Internet Protocol Version 4 (TCP/IPv4) or in the case of an XP system “Internet Protocol (TCP/IP)” and then click on the “Properties” button as shown in Figure 15. Figure 15 Internet Protocol Version 4 100- M0177X1 37 of 40 GMS Inc. doing business as Cobham Tactical Communications and Surveillance www.cobham.com/tcs...

  • Page 38: Figure 17 Ip Address Setup

    “Subnet mask” text box and the PC should automatically set the subnet mask associated with the class C addressing. See Figure 16. Figure 16 IP Address Setup 100- M0177X1 38 of 40 GMS Inc. doing business as Cobham Tactical Communications and Surveillance www.cobham.com/tcs...

  • Page 39: Figure 18 Entering A Static Ip Addresss

    Figure 17 Entering a Static IP addresss  That is all that is needed to be able to communicate with the M2ECHPT. Make sure to click on the “OK” button and then exit the properties window. You should now be able to open a Browser such as Microsoft IE and type in the default IP address of the M2ECHPT (in this example it is 192.168.1.36) and it should be able to talk to it (make sure to plug in the IP...

  • Page 40: Dhcp (Dynamic Host Configuration Protocol)

    This can be done using the LAN interface see section 5.1.  Keep in mind if the M2ECHPT is set up for DHCP addressing then each time it gets attached to the computer network the IP address may change (depending on the configuration of the DHCP server;...

Table of Contents