Revision History

Firmware

Gen 1

2.1218 – 2024-07-12

  • PCIe interface optimizations

  • Fixed first-level FIFO overflow

  • Fixed rare bug causing PC freeze

2.1192 – 2023-06-14

  • Fixed bug related to packet polarity

2.1134 – 2021-12-10

  • Fixed TDC over-temperature alarm issue

2.1126 – 2021-12-06

  • Fixed possible register read issue

2.1117 – 2021-06-23

  • Fixed register write issue

2.834 – 2017-12-05

  • Internal optimizations

2.797 – 2015-09-08

  • Fixed hit sorting and packet generation issues

Gen 2

2.24192 – 2024-07-10

  • Fixed erroneous packet for very high trigger rates

2.24117 – 2024-04-26

  • Fixed bug related to PCIe readout

2.23060 – 2023-03-01

  • Fixed bug related to packet polarity

2.22341 – 2022-12-07

  • Minor bug fixes

2.22327 – 2022-11-18

  • Support for board revision 7

Driver & Applications

1.12.1 – 2025-07-17

  • Added support for kernel mode driver 1.5.2

  • Improved error handling

1.10.7 – 2024-07-25

  • Support for TimeTagger4-10G (incl. calibration tool)

  • Include baseline calibration

  • Reduced supported range of dc_offset by 100 mV

1.9.0 – 2023-07-10

  • Added quantization to timetagger4_param_info structure

  • Code refactorization

1.8.3 – 2023-06-07

  • Minor bug fixes

  • Code refactorization

1.8.2 – 2023-05-17

  • Added bounds and checks for various parameters

1.8.1 – 2023-05-09

  • Renamed autotrigger mode to continuous mode

1.8.0 – 2023-05-05

  • Added configurable input delay

1.7.0 – 2023-04-18

  • Board Revision 7 support

  • TimeTagger4: added autotrigger mode

1.4.5 – 2022-10-17

  • Kernel driver v1.4.2 for xTDC4 only (fixes crash on Windows for Thunderbolt hot-plug)

1.4.4 – 2022-06-27

  • Kernel driver v1.4.1

1.4.2 – 2021-07-28

  • Firmware updated

  • ReadoutGUI added/updated

  • User guide example added/updated

1.4.1 – 2019-11-11

  • x64 32 mode issues fixed

1.4.0 – 2019-06-04

  • Improved Windows 10 support

1.3.0 – 2019-01-23

  • Added Windows 10 support

User Guide

2.0.0 – 2025-08-01

  • Initial Release of the HTML User Guide

  • Separated xHPTDC8, xTDC4, and TimeTagger4 User Guides

1.10.7 – 2025-07-12

  • xTDC4 and TimeTagger4: Documented driver release 1.12.1

1.10.6 – 2025-06-10

  • xTDC4 and TimeTagger4: Updated Figure 3.2

  • Removed references to J6 connector

1.10.5 – 2025-04-23

  • TimeTagger4 and xTDC4: Fixed code examples

  • Documented minimal pulse height

1.10.4 – 2025-03-20

  • TimeTagger4: Updated Table 8.2.2

1.10.3 – 2025-03-18

  • xHPTDC8: Documented Firmware 2.1225 and Driver 1.5.0

1.10.2 – 2024-12-17

  • xHPTDC8: Updated Figure 2.3

  • xTDC4: Fixed formatting

1.10.1 – 2024-09-19

  • xHPTDC8: Fixes and additions to introduction

  • xHPTDC8 and TimeTagger4: Documented max. readout rate for single channels

  • Updated Figure 2.4

1.10.0 – 2024-08-14

  • TimeTagger4: Renamed 10G calibration tool

  • Added Section “Memory Layout”

1.9.4 – 2024-07-30

  • Updated driver and firmware revision lists

  • xHPTDC8: Updated user guide example.cpp

1.9.3 – 2024-07-16

  • xHPTDC8: Fix driver revision list

1.9.2 – 2024-07-09

  • xHPTDC8: Added LED documentation

  • TimeTagger4 and xTDC4: Add overview figure of TBT and PCIe variant

  • Fixed grammar

1.9.1 – 2024-07-02

  • xHPTDC8: Updated firmware list

1.9.0 – 2024-06-27

  • Added new driver revision

  • TimeTagger4 and xTDC4: Added TBT variant

  • TimeTagger4 and xTDC4: Added ordering information

  • TimeTagger4 and xTDC4: Updated supported range for dc_offset

1.8.17 – 2024-06-20

  • xTDC4: Fixed API documentation

1.8.16 – 2024-06-20

  • TimeTagger4: Added documentation for 10G calibration tool

  • xTDC4 and TimeTagger4: Added LED documentation

  • xHPTDC8: Fixed default values for zero_channel

  • Clarifications for TiGer block indices

1.8.15 – 2024-05-08

  • Fixed auto_trigger formula

  • Updated oscillator characteristics

  • xHPTDC8: Fixed mistakes in API

  • xHPTDC8: Updated Code Examples

1.8.14 – 2024-03-27

  • Updated API

  • Updated information on power consumption

  • xHPTDC8: Extended chapter on gating

1.8.13 – 2024-01-18

  • xHPTDC8: Updated cover

  • TimeTagger4: Updated feature list

1.8.12 – 2024-01-10

  • xHPTDC8: Updated driver revision history

1.8.11 – 2023-11-29

  • Reformatting

  • Added latency between signal and Tiger output to Section 3.5

  • TimeTagger4: Updated table in Section 8.1.2

  • TimeTagger4: Clarifications in Features-list

  • TimeTagger4: Added ignore_empty_packets API documentation

  • xHPTDC8: Added default values for manager and configuration structs

  • xHPTDC8: Fixed number of boards that can be synchronized from 8 to 6

1.8.10 – 2023-07-28

  • Changed extended range values to 0.429s and 2.147s, respectively.

  • API clarifications.

1.8.9 – 2023-07-10

  • TimeTagger4 User Guide rework

1.8.8 – 2023-03-15

  • New TimeTagger4 variants -1.25G to -10G added

1.8.7 – 2022-11-24

  • Firmware revision notes updated

1.8.6 – 2022-11-23

  • Spelling and grammar corrections

  • New example source code for xHPTDC8

1.8.5 – 2021-12-17

  • Clarifications related to TimeTagger4 configuration.

1.8.4 – 2021-12-08

  • Updated grouping structure in xHPTDC8 API

1.8.3 – 2021-07-28

  • Updated firmware revision history

1.8.2 – 2021-04-23

  • Added software trigger and _SYNC trigger sources for xHPTDC8

  • Corrected 3.3V power requirement for xHPTDC8

  • Changed types with fixed bit width to stdint.h for xHPTDC8

  • Added user flash functions for xHPTDC8

1.8.1 – 2021-04-09

  • Many corrections and updates to the xHPTDC8 API

1.8.0 – 2021-03-22

  • Added xHPTDC8 User Guide

1.7.0 – 2021-02-04

  • Combined User Guide for -1G and -2G

  • Added characteristics for INL, DNL and Time Base

  • Reordered sections for clarity

  • Error corrections for rollovers, binsize and range

  • Added figure 3.2 (TiGer matrix)

  • Corrected board revision

1.3.0 – 2019-06-05

  • API clarifications