Optional Hammerfall DSP
Synchronization Module

This small module provides the word clock input for the HDSPe card and provides synchronization with LTC and video. Thanks to SteadyClock(TM), TCO not only extracts absolute position from LTC, but also extracts a very clean low-jitter word clock from LTC and video. Therefore, accurate timecode synchronization of samples to audio or video sources is ensured.

One single TCO can be used with different HDSP/HDPe cards at the same time (multicard), if connected to a supported card.


LTC can be exported and generated in all common formats (ie 24, 25, 30 and 29.97 frames); dropped or non-dropped frames. Commonly used pull-up and pull-down formats (+/- 0.1% and +/- 4%) can be used, and PAL and NTSC video formats will be automatically detected and processed.

The received timecode can be sent to audio or video applications as ASIO positioning protocol (APP) or MTC. The application can send the APP to the TCO, which will generate LTC at the hardware level with the lowest jitter (Windows only). Multiple flywheel functions facilitate catch-up operation (adjustable drop length, Continuous- or Jam synchronization).

Under Windows, TCO provides SMPTE location as APP (ASIO positioning protocol) and MTC synchronization. In macOS, TCO only provides SMPTE locations as MTC Sync.

TCO has a combined switchable word clock/video input (BNC) and LTC input (BNC). The word clock/video input on the card can be easily terminated (relay control) via the 75 Ohm terminator in the settings dialog.

The TCO also has an additional LTC output (BNC) with two level settings (configurable via jumpers).


Hammerfall DSP Synchronization Module