Desktop Solutions User Guide¶
![Front view of the TBT2PCIe crate](_images/front_view.png)
The TimeTagger4 and xTDC4 time-to-digital (TDC) converters by cronologic GmbH & Co. KG are available as external desktop versions, referred to as the TBT variant. Conventional Thunderbolt cables can be used to connect the TBT variants of our products to any Thunderbolt port and to any USB4 port that support PCIe.
This User Guide Appendix provides an overview of the device’s operation. For an explanation of the APIs and interfaces refer to the main user guide of your product.