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Aurora's DT3515 series Digital Transmitters digitize two RF return paths, multiplex them, and transmit them on a single return fiber on a DWDM ITU-grid wavelength. Models supporting 5–42 and 5–50 MHz passbands (DT3515) transmit the signal at 2.125 Gbps, while models supporting a 5–65 MHz passband (DT3515C) transmit the signal at 3.1875 Gbps.

By providing two RF returns on an ITU-grid wavelength, the DT3515 alleviates fiber exhaustion and greatly simplifies the network by enabling the use of DWDM transport from hubs to the headend. The 5 dBm output transmitter power supports link losses up to 23 dB and 200 km dispersion limits.

The unique mid-plane packaging of the DT3515 features two back plate options: a compact one-module width design for single wavelength applications (using optional back plate model BP-A6) or an integrated "Back Plate" multiplexer for DWDM applications (using optional back plate model BP-35M4x-1-02-AS), which eliminates the need for a separate platform or shelf for a typically packaged multiplexer.

The high density packaging enables network operators to install up to 12 transmitters per 3RU chassis, all of which can be monitored remotely or locally from the power supply module. The compact design minimizes rack space requirements in hubs.

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