dtm Associates can help you with your most demanding telecommunications product design and development requirements. We design or co-design (with you or a third-party manufacturer) power subsystems, power distribution, chassis alarm and signaling interfaces, cooling fan trays and speed control systems, on-card power conversion (both "brick" and discrete) and high speed communications circuitry:

Telecommunications Power Systems Design including -48Vdc Power Distribution Units (PDUs); Power Backplanes/Mid-planes and Bus Bar Design; On Card Power (Discrete and "Bricks"); Chassis and Card EMI Filtering; Hot Plug and Arc-Suppression; Power Sequencing and Critical Signal Control; Grounding Strategy (Ground Loop Avoidance); and Design for Compliance to International Requirements --  Telcordia GR-1089-CORE (USA), ETSI ETS-000332/386 (Europe).

System Chassis Controller Design including Maintenance Bus Interfaces (I2C, etc.); Chassis Power Management (Orderly Sub-System Turn-On and Turn-Off); Fault Reporting and Error Indication (Visual and Relay/Electronic); and System Operating Parameter Reporting (Voltage/Current/Power/Frequency).

Cooling Fan Controller Design including Maintenance Bus Interfaces (I2C, etc.); Electrical Connector Selection; Hot Plug and Arc-Suppression Circuitry; "Smart" Fan Functionality; Chassis Temperature Sensing Strategies; and Automatic or Controlled Speed Selections.

High Speed Communications Circuit Design including High Speed Laser Drivers; Modulated Current Sources; APD Receiver Bias Supplies; Thermoelectric Cooler (TEC) Drivers With High Accuracy; Power Sequencing Controllers; Discrete and Integrated Driver Circuitry With OC-3 to OC-786+ Speeds; and EMC/EMI Countermeasure Provisioning.

We have designed many components, sub-systems and complete chassis systems for telecommunications system manufacturers. We have implemented many successful strategies for highly available power systems, power distribution, chassis cooling and high speed optical I/O.

Please give us the opportunity to do the same for you. Allow us to provide you with a comprehensive quote on you most demanding telecommunications product requirements.

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