Model 2267C Multi-Channel Correlating Best Source Selector
The GDP Model 2267C Correlating/Diversity Combining Best Source Selector accepts up to sixteen input data streams. Each input channel may be from digital data & clock or Ethernet input packets. Each channel is independently assigned to one of up to six Best Source output processing groups. The optimized FPGA-based state machine digital design affords the highest performance characteristics. The unit accepts input streams to 40 Mbps (operates with Stream inputs and Group outputs, all at 40Mbps simultaneously).
The standard IRIG randomizer/derandomizer for both forward and reverse sequences is provided. The input data streams may be Encapsulated data as produced by GDP Encapsulating Bit Synchronizers, such as the Model 2265EC Bit Synchronizer, Telemetry Receivers like the Model 4426 Telemetry Receiver & Model 4455 Receiver, and devices that provide the RCC DQE/DQM encapsulation technique or pattern detector modes.
Best Source Selection of Non-Encrypted and Encrypted Data is based on Signal Quality as well as bit-by-bit Weighted Majority Voting. The Best Source output is not only the Best Stream Source, but also the best Bit Source.
Auto Correlation & Diversity Combining BSS Performance gain over 5 db.
16 Input Channels & 6 Group Outputs (Data/ Clock and/or Ethernet-IRIG 218-10 & 20). Higher input, channel counts are supported.
16 Decapsulated outputs to support recording of raw data inputs.
Seamless Stream Switching Supports Encrypted & Clear Data.
Selection Criteria/Modes; Data Quality, Bit-by-Bit, Majority Vote, Weighted MV, Frame Pattern Analysis, Mixed Mode.
Data Quality Sources: GDP Bit Synchronizer, GDP Receiver, 3rd Party Receivers with RCC DQM/DQE (IRIG-106 Std).
Additional Features
- Ethernet Control Virtual Interface Control Software.
- GDP TRMS-RMS Compatibility.
- Real-time LED Front Panel Display.
- Auto Correlation & Diversity Combining BSS Performance gain over 5 db.
- 16 Input Channels & 6 Group Outputs (Data/ Clock and/or Ethernet-IRIG 218-10 & 20). Higher input, channel counts are supported.
- 16 Decapsulated outputs to support recording of raw data inputs
- Seamless Stream Switching Supports Encrypted & Clear Data
- Selection Criteria/Modes; Data Quality, Bit-by-Bit, Majority Vote, Weighted MV, Frame Pattern Analysis, Mixed Mode.
- Data Quality Sources: GDP Bit Synchronizer, GDP Receiver, 3rd Party Receivers with RCC DQM/DQE (IRIG-106 Std).
- Ethernet Control Virtual Interface Control Software.
- GDP TRMS-RMS Compatibility
- Real-time LED Front Panel Display
- Data & Clock Inputs/Outputs & Ethernet Data Inputs/ Outputs
- 16 Decapsulated Data/Clock Outputs
- Independent Ethernet Control & Ethernet Data Ports IRIG-218-2010 & 2020 TMoIP Support
- Supports Encapsulated Data Input
- Data Quality Source
- GDP 2265EC Bit Synchronizer
- GDP 4426 Receiver
- 3rd Party Receivers
- RCC DQM/DQE (IRIG-106 Standard)
- Bit Rates: Up to 40 Mbps (Supports 40Mbps simultaneous operation on all 16 Inputs and Group outputs)
- Input streams auto-correlated
- Best Source Criteria
- Data Quality
- Bit-by-Bit /Majority Vote/Weighted MV
- Frame Pattern Analysis
- Mixed Mode support
- Down-stream devices receive the highest quality data. Downstream Frame synchronizers maintain lock.
- Seamless Output Stream Switching on bit boundaries
- Input De-randomizer/ Output Randomizer
- Remote Control via
- Ethernet
- 25-inch High Chassis
- Includes Virtual Interface Control Software
- Computable with GDP TRMS-RMS (Telemetry Range Management System) Software that supports mission based data routing through multiple BSS boxes & Gateways with detailed post mission Report Generation and extensive logging capability.
- Real-time Front Panel LED display illustrating for all 16 Input Channels & 6 Group Outputs; Current Best Source, Correlation, Lock
The GDP Best Source Selector is an advanced, next-generation implementation of best source selection based on signal/data quality. Since signal quality is used in the
primary decision-making process, the unit does not need to see a frame synchronization pattern; therefore, the data can be encrypted. Remotely located GDP Receivers and/or Bit Synchronizer Encapsulators, or third-party systems that support RCC DQE/DQM, provide signal quality information within the Encapsulated data stream, which is used in the best source decision process. Modes that do use the frame sync pattern for quality are also supported. The GDP BSS also supports multiple different modes in the same group. The selected best source data is produced seamlessly at the bit level. The Best Source construction technique is so efficient that individual good bits are substituted for bits in error.
As long as good bits exist in the applied sources, downstream frame/format synchronizers remain in lock. Over 5 dB performance improvement is realizable
How the BSS works
Ordering Options
Base
| MD2267C-M16-G6 | 16 Channel Diversity Combining /Correlating Best Source Selector (40Mbps) with Six BSS Group Outputs with Data & Clock Inputs; GDP and RCC DQE/DQM, Ethernet Remote Control GUI Including: -16 Digital Data/Clock Input Channels -16 Digital Data/Clock Decapsulated Outputs -6 Digital Data/Clock Group Output -GDP & RCC DQE/DQM -Majority Vote Weighted by Signal Quality Function -All GDP BSS Modes & Algorithms including Multi-Mode Support -40Mbps Operation (All Channels Simultaneous) -Frame Sync Pattern Detectors -Built in BERT Function -Ethernet Remote Control -75 Ohm -Remote Control GUI -Chassis Slides |
| MD2267C-M16-G6-EN | 16 Channel Diversity Combining /Correlating Best Source Selector (40Mbps) with Six BSS Group Outputs. Supports both Data & Clock and Ethernet Data I/O, GDP and RCC DQE/DQM, Ethernet Remote Control GUI. Including: -16 Digital Data/Clock and Ethernet Input Data Channels -16 Digital Data/Clock Decapsulated Outputs -6 Digital Data/Clock and Ethernet Group Outputs -GDP & RCC DQE/DQM -Majority Vote Weighted by Signal Quality Function -All GDP BSS Modes & Algorithms including Multi-Mode Support -40Mbps Operation (All Channels Simultaneous) -Frame Sync Pattern Detectors -Built in BERT Function -Ethernet Remote Control -75 Ohm -Remote Control GUI -Chassis Slides |
Options
| OP2267-45 | Ethernet Input/Output supporting RCC DQE/DQM (22 Channels 22 IN and 6 Out) |
| OP2267C-50 | Redundant Power Supply (Only 1 AC input) |
| OP2267B-51 | Redundant Power Supply Assy Including 2 Power Supplies (Original Pwr Sply is not available. We replace both supply’s and perform box wiring changes on units sold before 2015) |
Spares
| BSS 2267-EN | Spare: Ethernet Input/Output Module (22 Channels 22 IN and 6 Out) |
| BSS 2267-CPU | Spare: CPU Card with box FW |
| BSS 2267-MB-M06 | Spare: BSS Motherboard (16 Channels w/6BSS Group Outputs) |
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