TMoIP/ Data Transport / Communication Multiplexer

Model 2350 / 2351 Telemetry Gateway (TMoIP)

The Model 2350 Telemetry Gateway provides the necessary signal processing to pass telemetry data either to or from an Ethernet network. User programmability permits the unit to function as a Telemetry-to- Ethernet converter (packetizer) or as an Ethernet-to-Telemetry converter (de-packetizer). The Model 2350 is a rack mount unit and accommodates one or two modules. The Model 2351 is a table-top unit that accommodates a single module. Modules can be mixed and matched as needed. Each channel on a module is individually configurable as either a packetizer or a depacketizer.

The Model 2350 is available in 2, 4, 6 and 12 channel configurations. Each channel accepts PCM data streams with associated coherent clocks. PCM data is captured and packetized into Ethernet packets along with header information. Packet size and buffering can be user selected or automatically controlled to minimize latency. The remote unit receives the Ethernet packets from the network and depacketizes the PCM data. Using the statistics provided by the packetizer, the de-packetizer reconstructs the original PCM data stream and coherent clock. Input PCM data streams may be independent in content and rate. Up to 12 Channels are provided in the 1U Chassis.

In a typical application, the inputs to the packetizer are received from PCM sources such as bit synchronizers connected to telemetry receivers. (Optionally, internal bit synchronizers are available.) The data is then transported over the network to a remote unit. The de-packetizer function in the remote unit reconstructs the output clock and PCM data which can be directly connected to a PCM frame synchronizer / decommutator. Alternatively, the data can be sent over the networks to a remote processing unit. Frame synchronization and packet alignment in the packetizer simplify processing by a downstream software decommutator.

  1. Dual/Quad Channel Configurations
  2. Programmable Transmit / Receive
  3. Dual Channel PCM Module
  4.      • TTL/RS-422 Data & Clock
         • Auto Rate Tracking
         • Up to 40 Mbps
         • Data Only Input, Bit Sync (*)
         • Frame Sync and Alignment (*)
  5. Time Input / Output / Packet Tagging
  6.      • IRIG STD 200 (*)
         • NTP (*)
         • IEEE-1588 (*)
  7. Ethernet
  8.      • 10 / 100 / 1000 base-T (Standard)
         • SFP Fiber Modules (*)
         • UDP/TCP/IP Data Protocols
         • Unicast or Multicast
         • IRIG STD 218-07 Compatible (*)
         • IRIG STD 106 Ch 10 Compatible (*)
  9. Very Low Latency—Less than 10ms at all data rates
  10. Integrated BERT for link testing and latency analysis
  11. Signal Activity Indicators
  12. Independent Packetizer and De-Packetizer
  13. User Interface
  14.      • HTTP / Web Browser
         • Command Line & SNMP (*)
  15. Best Source Selection (*)
  16. Redundant Power Supply (*)
  17. Table Top or Rack Mount Package
(*) Optional Feature

Digital Input Bit Synchronizer Option: This option recovers a clock from a digital data input for those applications where a synchronous clock is not available.

Frame Synchronizer Option: Frame synchronize to the incoming PCM format. Align the start of each minor frame to the start of a network packet. This feature supports simplified software decommutation directly from the Ethernet.

IRIG 106 Chapter 10 Compatible Output Option: The module can be optionally configured to output the PCM data onto Ethernet in Chapter 10 compatible packets. These packets can then be decommutated, processed and displayed by a variety of standard Chapter 10 compatible software packages.

Small Form Pluggable (SFP) Interface Option: Allows the user to select the appropriate fiber transceiver for the required optical reach over various fiber types. SFP modules may be provided by the user or contact GDP for module options.