72371901 2024 108 00:00 2 05 Start tracking with nominal repetition rate 2 kHz, using Daheng Sagittar-SLRP laser. 
72371901 2024 028 00:00 2 10.01 Preprocessing criterion changed for LARES-1, -2, Starlette and Stella 
72371901 2023 354 00:00 2 10.01 Preprocessing criterion changed for LAGEOS-1 and -2 
72371901 2023 311 18:15 2 05 Station maintenance finished: Operation resumed. 
72371901 2023 289 00:00 2 05 Station shut down for maintenance: Laser chamber replacement.  
72371901 2021 349 06:40 2 10.01 Updated NP generating software. NP bin kurtosis algorithm now has 3.0 subtracted. 
72371901 2021 239 18:00 2 5.05 Use PI laser instead of Daheng laser. 
72371901 2021 168 16:30 2 5.04 Adjusted TC454 CFD trigger(T) and zero(Z) voltage, revert to last state before 2021-006. Calibration delay affected. 
72371901 2021 006 08:00 2 5.04 Adjusted TC454 CFD trigger(T) and zero(Z) voltage. Calibration delay affected. 
72371901 2018 100 06:00 2 06.01 Use A033 event timer instead of A032 event timer. 
72371901 2018 080 07:00 2 05 Use the former laser instead of new laser. 
72371901 2017 338 09:20 2 06.01 New A032 event timer instead of old A032 event timer. 
72371901 2017 328 09:20 2 06.01 Use A032 event timer instead of A033 event timer. 
72371901 2017 284 00:00 2 06.01 Use A033 event timer instead of A032 event timer. 
72371901 2017 244 00:00 2 06.01 Use A032 event timer instead of A033 event timer. 
72371901 2017 228 00:00 2 05 Use a new laser for test instead of former laser. 
72371901 2017 128 02:00 2 06.01 Use A033 event timer instead of A032 event timer. 
72371901 2016 319 08:30 2 99 Control software was modified. 
72371901 2015 285 08:30 2 13.02 Coordinate measurement result added. 
72371901 2015 285 08:30 2 13.01 New GPS timer ASHTECH UZ-12 was juxtaposed beside the Meridian Precision GPS TimeBase clock. 
72371901 2015 145 08:30 2 99 Change new return cable. 
72371901 2015 140 02:38 2 06.01 Remove A033 event timer and pulse distribution unit. Using A032 event timer. 
72371901 2013 225 00:00 2 99 Change new return cable. 
72371901 2013 225 00:00 2 09 Change new Meridian Precision GPS TimeBase clock. 
72371901 2013 115 00:00 2 08 Test the new near target.The target distance is 3.699m. 
72371901 2012 116 00:00 2 06.01 Test the new A033 enent timer and pulse distribution unit 
72371901 2011 234 00:00 2 99 The start and stop cables are changed 
72371901 2010 271 00:00 2 99 the threshold of the third channel of TC454 is adjusted 
72371901 2009 253 00:00 2 99 The last channel of TC454 is replaced by the third one,which is used for the input B of event timer A032-ET 
72371901 2009 202 00:00 2 05 new laser system 
72371901 2008 146 00:00 2 99 New computer, new controlling hardware and software 
72371901 2006 319 00:00 2 99 start and stop cables are changed 
72371901 2006 296 00:00 2 99 New controlling card and software,A032 event timer is used 
72371901 2006 296 00:00 2 06.01 A032 event timer is used 
72371901 2006 182 00:00 2 04 New servo and encoder,24-bit encoder and digital servo 
72371901 2006 154 00:00 2 99 The system is re-adjusted,all mirrors are re-coated. 
72371901 2006 096 00:00 2 99 Software modified for CPF 
72371901 2005 308 00:00 2 99 Software modified for timing system and cables of the start and stop signal of HP5370B changed 
72371901 2005 292 00:00 2 99 The first channel of TC454 is connected to start of HP5370B directly,the second channel removed 
72371901 2005 290 00:00 2 99 All Cable replaced 
72371901 2005 275 00:00 2 99 The Second channel of TC454 is used for start of HP5370B 
72371901 2002 195 00:00 2 06.01 New HP5370B replaced the old one 
72371901 2002 176 00:00 2 99 New computer and software replaced the old one 
72371901 2002 119 00:00 2 09 HP58503A GPS receiver is repaired, 
72371901 2002 119 00:00 2 09 HP58503A GPS time and frequency reference receiver replaced XR4-GPS and Rebidium frequency standard 
72371901 2002 079 00:00 2 09 HP58503A GPS receiver is replaced,HP58503A GPS receiver was broken 
72371901 2001 290 00:00 2 06.01 New C-SPAD replaced the old one, output: out1 
72371901 2001 156 00:00 2 06.01 C-SPAD out2 replaced out1 
72371901 2000 070 00:00 2 99 returning signal cable changed 
72371901 1999 255 00:00 2 99 returning signal cable changed 
72371901 1999 255 00:00 2 06.01 C-SPAD out1 replaced out2, returning signal cable changed 
72371901 1999 254 00:00 2 06.01 C-SPAD out2 replaced out1 
72371901 1999 245 00:00 2 99 the system cable changed 
72371901 1999 152 00:00 2 04 New encoder for tracking system,23-bit encoder and new code disk 
72371901 1998 034 00:00 2 04 New driving system for mount 
72371901 1997 230 00:00 2 99 PCS installed 
72371901 1997 230 00:00 2 12 METS installed and new survey 
72371901 1997 230 00:00 2 09 New GPS receiver replaced XR4-GPS 
72371901 1997 230 00:00 2 06.01 C-SPAD detector installedand 
72371901 1997 214 00:00 2 99 repaired preamplifier used and short cable from PMT to preamplifier 
72371901 1995 001 00:00 2 99 CCD camera installed 
72371901 1994 001 00:00 2 99 preamplifier installed 
72371901 1993 089 00:00 2 99 TC454 replaced 1428A 
72371901 1993 089 00:00 2 09 GPS receiver installed 
72371901 1992 001 00:00 2 04 Baseline system configuration:Az-El mount 
72371901 1992 001 00:00 2 99 Baseline system configuration:Long wave receiver 
72371901 1992 001 00:00 2 99 Baseline system configuration:4013B camera 
72371901 1992 001 00:00 2 99 Baseline system configuration:1428A constant fraction discriminator 
72371901 1992 001 00:00 2 09.01 Baseline system configuration:Rebidium frequency standard 
72371901 1992 001 00:00 2 06.01 Baseline system configuration:HP5370B counter 
72371901 1992 001 00:00 2 06.01 Baseline system configuration:GDB49A detector(PMT) 
72371901 1992 001 00:00 2 05 Baseline system configuration:ND:YAD laser