https://www.tcspc.de/ 2026-04-23T18:33:53+00:00 https://www.tcspc.de/ https://www.tcspc.de/lib/exe/fetch.php/logo.png text/html 2025-02-14T15:46:14+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.tcspc.de/doku.php/faq:the_dark_counts_of_my_spads_increased._when_do_i_need_to_take_action?rev=1739547974&do=diff <table><tr><th colspan="2" width="50%">2025/01/31 09:57</th><th colspan="2" width="50%">current</th></tr><tr><td class="diff-blockheader" colspan="2">Line 1:</td> <td class="diff-blockheader" colspan="2">Line 1:</td> </tr> <tr><td class="diff-lineheader">&#160;</td><td class="diff-context">====== The Dark Counts of my SPADs increased. When do I need to take action? ======</td><td class="diff-lineheader">&#160;</td><td class="diff-context">====== The Dark Counts of my SPADs increased. When do I need to take action? ======</td></tr> <tr><td class="diff-lineheader">-</td><td class="diff-deletedline">{{tag&gt;&#160;<strong class="diff-mark">detector&#160;</strong>faq SPAD dcps dark_counts}}</td><td class="diff-lineheader">+</td><td class="diff-addedline">{{tag&gt;&#160;<strong class="diff-mark">detectors&#160;</strong>faq SPAD dcps dark_counts}}</td></tr> <tr><td class="diff-lineheader">&#160;</td><td class="diff-context"></td><td class="diff-lineheader">&#160;</td><td class="diff-context"></td></tr> <tr><td class="diff-lineheader">&#160;</td><td class="diff-context">SPAD detectors (Excelitas SPCMs or MPD PDMs) are relatively robust devices, but they can exhibit ageing, which shows mostly in the level of dark counts. Dark counts are the count rate on the detector when no light at all can get to the active area of the detector.</td><td class="diff-lineheader">&#160;</td><td class="diff-context">SPAD detectors (Excelitas SPCMs or MPD PDMs) are relatively robust devices, but they can exhibit ageing, which shows mostly in the level of dark counts. Dark counts are the count rate on the detector when no light at all can get to the active area of the detector.</td></tr> </table>