User’s Manual The most important thing we build is trust. Digital Data Processor Card (DDPC) 100-M0070X2 05/14/2009 Cobham Surveillance GMS Products 1916 Palomar Oaks Way Ste 100 Carlsbad, CA 92008 T: 760-496-0055 F: 760-496-0057 www.cobham.
Table of Contents 1 2 3 4 5 6 7 Acronyms....................................................................................................................................................................... 4 Introduction ................................................................................................................................................................ 5 2.1 Key System Features ..................................................................................................
List of Figures Figure 1 Three CH MSR w/optional BDC’s and DDPC ................................................................................................. 7 Figure 2 System Configuration for DDPC with AES Decryption only ................................................................. 8 Figure 3 System Configuration for DDPC with High Speed Data, AES Decryption optional. .................. 9 Figure 4 System Configuration for DDPC with User Data w/wo AES Decryption Setup ........................
1 Acronyms This section lists and describes the various acronyms used in this document.
2 Introduction The GMS Digital Data Processor Card (DDPC) is a data processor with several powerful and unique features. Data can be received and transmitted by any combination of the following: ASI/SDI via BNC serial cable, and/or LVDS/LVTTL via 50-pin connector, computer communications through two RS-232 ports, and can be programmed for custom applications. The DDPC is designed to fit one of the slots of the GMS Messenger Smart Receiver (MSR) or stand-alone.
3 System Overview The GMS Messenger Digital Link (MDL) system utilizes a robust digital modulation system known as COFDM that provides frequency diversity and powerful Forward Error Correction (FEC) algorithms. The end result is a robust wireless link that is effective against multipath interference experienced by analog systems, and provides crisp, clear pictures in the most difficult of terrains.
A single MSR with internally mounted BDC-s and DDPC can support up to 3 independent antennas. With external BDC-s, each single MSR can support up to 6 independent antennas. The system automatically configures itself for inputs from 1 to 6 per MSR. Both even and odd configurations are supported.
4 Getting Started The DDPC is pre-configured by GMS prior to shipment (based on customer requirements), thus is ready to work “right out of the box”. NOTE: Additional cables may be delivered by GMS based on customer application. Contact GMS for further information. 4.1 Initial Checkout Prior to installing a DDPC unit into the desired target environment, an initial checkout should be performed to ensure proper operation of the unit. 4.1.
4.1.2 High Speed Data w/wo AES Decryption Setup The High Speed Data with or without AES Decryption needs one BNC cables, one special High Speed Serial Cable, and a USB cable. All the cables are shipped with the DDPC unit. Figure 3 shows the DDPC system configuration for High Speed Data w/wo AES Decryption Setup. The steps necessary to setup the system configuration in Figure 3 are shown below.
the DDPC unit. Figure 4 shows the DDPC system configuration for User Data w/wo AES Decryption Setup. The steps necessary to setup the system configuration in Figure 4 are shown below.
BNC 50 I/O ASI SPI OUT MSR SLAVE COMBINER DVB ASI BNC 50 I/O BNC 50 I/O ASI SPI OUT ASI IN LVDS/TTL I/O MSR MASTER 2 RS232 USB CTRL &DATA BNC DECODER VIDEO ASI OUT DDP CARD VIDEO MONITOR SET UP AND CONTROL PC Figure 5 4K System Configuration for DDPC with 4K 1. 2. 3. 4. 5. Install MSR and other devices as their user manuals describe. Attach the short BNC cable to the BNC connector of MSR closest. Attach the other end of the short BNC cable to the ASI IN connector.
5 Hardware Overview The DDPC is designed to fit in one slot of the MSR or in an optional external 4”x3”x1” enclosure. All user interface connectors (RS-232, USB, ASI in/out and 50 pin LVDS/LVTTL) and two led indicators (System Active and Function Active) are located on the rear of the DDPC unit panel. When installed in the MSR, power comes from the MSR’s 12V power supply. When in an external enclosure, power comes from a 2-pin 2mm JST connector near the top.
The DDPC has a Micro-controller and an FPGA that can do highly complex computations. Its ability to accept and produce serial ASI and 44 I/O data pins make it a most versatile tool. The DDPC is protected with a 1 amp resettable fuse. The board is designed to accept 9-15 VDC input power. Power consumption is application dependant. Refer to application. The internal logic diagram is shown in figure 6.
5.2.1 System Active LED A solid LED indicates that the system has power, and a blinking LED indicates data is being received. 5.2.2 Function Active LED The Function Active LED indicates that data is being processed by the DDPC. If the light is off then the data is not being processed and is leaving the same as it enters. For example if the AES Decryption mode is turned on and the Function Active LED is on, the ASI stream is being decrypted.
Pin Signal 1 5V Description 5V POWER 2 USBDM D- 3 USBDP D+ 4 USB GND GND Table 2 USB Connector 100-M0070X2 15 of 26 www.cobham.
5.2.7 50 PIN IO PORT The 50 PIN IO PORT is a data IO interface connected to an ERNI 054596 0.05-inch header. There are 44 data lines, 4 dedicated ground lines and 2 lines that can be ground or 3.3 volts, factory settable only. Each data pair has been designed to support 1 LVDS pair or 2 LVTTL data lines. There are four (LVTTL or two LVDS) lines that go to FPGA global clock pins. Table 3 shows the 50 PIN IO Connections.
5.3 DDPC Top side Located near the front of the DDPC are the POWER PLUG and the MSR MOTHER BOARD INTERFACE, these two connectors supply power and I2C control from the MSR Mother Board (future). See Figure 5 Top View. 5.3.1 POWER PLUG The POWER PLUG connector is a JST B2B-PH-SMT-TBT 2MM pitch. It can receive 12 volts from a different source than the MSR for stand-alone cases. Table 4 shows the POWER PLUG Connections.
6 Software Overview Configuration, control and monitoring of the DDPC unit can be implemented by using the Windows based control program supplied for each application. This program provides control of the AES decryption key and mode, high-speed data lost connection byte, and other needed settings.
6.3.1 Function AES Decryption When the program is launched, the screen shown in Figure 8 is displayed. The user should first select the serial port the computer is connected to via the Serial Port Selector and connection region. To configure the DDPC, the user must select a Descrambling mode, type in the Descrambling key, if in AES mode, and then click on Apply. Click on update to store these settings after powering off. The following section explains the various functions.
Figure 10 AES Decryption Descrambling Mode 6.3.2 Function High-Speed Data When this program is launched the screen shown in figure 10 is shown. The user should first select the serial port the computer is connected to via the Serial Port Selector and connection region. There is no need to change any settings to make the DDPC function in High-Speed Data mode. The Option menu will only be enabled if you have purchased the AES Decryption option. See AES Decryption for a full explanation of the settings.
6.3.2.1 Function High-Speed Data Buttons and Selects Com Port Selection: Select the COM port that the DDPC is connected to. Reset Button: Clicking on this button re-initializes the DDPC FPGA. Query Button: Clicking on this button will set all the fields to the current operation mode, except the Descrambling Key. Apply Button: Load the DDPC with the new Descrambling Mode and Descrambling Key.
6.3.3.1 Function User Data Buttons and Selects Com Port Selection: Select the COM port that the DDPC is connected to. Reset Button: Clicking on this button re-initializes the DDPC FPGA. Query Button: Clicking on this button will set all the fields to the current operation mode, except the Descrambling Key. Apply Button: Load the DDPC with the new Descrambling Mode and Descrambling Key.
Reset Button: Clicking on this button re-initializes the DDPC FPGA. Query Button: Clicking on this button will set all the fields to the current operation mode, except the Descrambling Key. Apply Button: Load the DDPC with the new Descrambling Mode and Descrambling Key. Save Button: Clicking this button will save the settings to the DDPC so when power is recycled the DDPC will remember the last settings. 4K Mode: This box indicates the mode of the received signal (Red for 2K and green for 4K).
Case (go to www.cobham.com/gms for details) MSR (Sold Separately) See separate data sheets Rack-Mount (Sold Separately) 100-M0070X2 24 of 26 www.cobham.
Appendix A: Cable, DDPC to High-Speed Data out 100-M0070X2 25 of 26 www.cobham.
Appendix B: Cable, User Data RS-232 100-M0070X2 26 of 26 www.cobham.
