| SOD | Year | Day of Year |
Time of Day |
Data Impact | System | Description |
|---|---|---|---|---|---|---|
| 78106801 | 2024 | 332 | 14:50 | 0 | 05.09 | LASER Trigger: Increased repetition rate from 560 to 800 Hz. |
| 78106801 | 2024 | 332 | 10:30 | 0 | 05.09 | LASER Trigger: Increased repetition rate from 500 to 560 Hz. |
| 78106801 | 2024 | 330 | 08:00 | 0 | 05.09 | LASER Trigger: Increased repetition rate from 400 to 500 Hz. |
| 78106801 | 2024 | 313 | 08:00 | 0 | 05.09 | LASER Trigger: Increased repetition rate from 100 to 400 Hz. |
| 78106801 | 2024 | 299 | 10:30 | 0 | 06 | RECEIVER Rotating shutter: Moved out from the optical path. |
| 78106801 | 2024 | 234 | 06:00 | 0 | 05.09 | LASER Laser: New Passat laser installed, aligned etc. See subsystem 05.10 in the site log. |
| 78106801 | 2024 | 025 | 11:00 | 0 | 05.09 | LASER Chiller: DI-cartridge exchanged (after too high conductivity). On switching on the chiller, the regeneration laser head got water leakage. |
| 78106801 | 2024 | 011 | 09:00 | 0 | 05.09 | LASER Chiller: Particle filter exchanged (after too low flow). |
| 78106801 | 2023 | 305 | 18:00 | 0 | 05.09 | LASER Attenuator-IR: polarizer manually set to get 2 mJ maximum in the green again. |
| 78106801 | 2023 | 305 | 18:00 | 0 | 05.09 | LASER Divergence optics: motor replaced. Works again reliably. |
| 78106801 | 2023 | 292 | 08:00 | 0 | 06 | RECEIVER Discriminator: At the discriminator input, inserted an rf relais and an 1m cable. This changes the absolute delay. |
| 78106801 | 2023 | 256 | 18:00 | 0 | 99 | DOME: New dome flap installed. The geodetic dome remains unchanged. |
| 78106801 | 2023 | 244 | 08:00 | 0 | 05.09 | LASER Attenuator-green: Drive exchanged with attenuator-IR drive. Attenuator-IR polarizer manually set to get 1.1 mJ maximum in the green for safety reasons due to not working divergence optics. |
| 78106801 | 2023 | 213 | 08:00 | 0 | 05.09 | LASER Attenuator-green: does not work at all. |
| 78106801 | 2023 | 206 | 08:00 | 0 | 05.09 | LASER Divergence optics: does not work reliably. |
| 78106801 | 2023 | 194 | 08:00 | 0 | 05.09 | LASER Oscillator: The laser manufacturer re-aligned it and the laser. Green out 2 mJ only instead of 8 mJ due to unknown reasons (Oscillator did decrease pulse width with repair). |
| 78106801 | 2023 | 179 | 08:00 | 0 | 05.09 | LASER Chiller: received from manufacturer repair. Integrated into the system. It is working with thermal load/pumped laser heads again. DI-cartridge and particle filter has been exchanged by the manufacturer. |
| 78106801 | 2023 | 115 | 08:00 | 0 | 05.09 | LASER Chiller: Current temperature just increasing. Sent to manufacturer for repair. |
| 78106801 | 2023 | 075 | 08:00 | 0 | 05.09 | LASER Oscillator: Re-inserted after repair of RF output at manufacturer. Pulse width is reduced from previous 60 ps to 46 ps now. |
| 78106801 | 2022 | 278 | 08:00 | 0 | 05.09 | LASER Chiller: Cold water controller, particle filter and DI-cartridge exchanged. |
| 78106801 | 2022 | 249 | 18:00 | 0 | 99 | STATION Cooling: New air and water cooling installed for racks and rooms. |
| 78106801 | 2022 | 243 | 15:00 | 0 | 09 | TIME+FREQ Frequency standard: Due to maintenance of maser ion pumps, switch back to previously used quartz A = oscillator 1. |
| 78106801 | 2022 | 176 | 18:00 | 0 | 99 | DOME: New slit dome installed. The geodetic dome remains unchanged. |
| 78106801 | 2022 | 160 | 15:00 | 0 | 06 | RECEIVER Rotating shutter motor (electronics exchanged by manufacturer) re-integrated into the system. |
| 78106801 | 2022 | 053 | 15:00 | 0 | 06 | RECEIVER Rotating shutter motor does no longer work. |
| 78106801 | 2022 | 048 | 16:00 | 0 | 05.09 | LASER Head cable replaced. |
| 78106801 | 2021 | 341 | 08:00 | 0 | 06 | RECEIVER Discriminator-Eventtimer: For the event timer start1, connected two NIM outputs of the discriminator in parallel. This fixed the high calibration RMS due to changed earthing and grounding since install of STATION UPS (doy= 167). |
| 78106801 | 2021 | 293 | 08:00 | 0 | 05.09 | LASER Attenuator-IR re-adjusted. Energies(RegenOut,IR-TP,GROut) 3.8 mJ, 21 mJ, 8.2 mJ. End of manufacturer service. |
| 78106801 | 2021 | 292 | 14:00 | 1 | 05.09 | LASER Regeneration amplifier: Medox-Triode replaced because the manufacturer technician is at site. Old triode still good. With new triode 1.step is at -4kV (entire HV is at ~-9.5kV) adjusted for max. pulse energy in the green. |
| 78106801 | 2021 | 292 | 12:00 | 0 | 05.09 | LASER Mirror M8 replaced because of a small damage. |
| 78106801 | 2021 | 292 | 10:00 | 0 | 05.09 | LASER Medox-Delay2(D13) 270.23250us increased pulse energy by reducing post pulses and select previous regen pulse. |
| 78106801 | 2021 | 291 | 14:00 | 0 | 05.09 | LASER Medox high voltage adjusted in order to compensate for better voltage symmetry at pockels cell around switching point. Reduced post-pulses and increased pulse energy in the green. |
| 78106801 | 2021 | 256 | 09:00 | 1 | 05.09 | LASER Compensated start diode time walk/Calibration constant C3 changed by +1ns in order to move cal histogram to 0. |
| 78106801 | 2021 | 256 | 09:00 | 1 | 05.09 | LASER Compensation of lower gain: Startdiode: Discriminator: Threshold reduced from 0.600 V to 0.300 V and at PowerDivider: 50 Ohm terminator removed. |
| 78106801 | 2021 | 229 | 13:00 | 0 | 05 | LASER Chiller: Particle filter exchanged (after too low flow). |
| 78106801 | 2021 | 203 | 18:00 | 0 | 99 | COOLING operator room: Installed new outdoor device. Deinstalled temporary replacement air condition. |
| 78106801 | 2021 | 173 | 10:00 | 0 | 06 | RECEIVER Discriminator-Eventtimer: For the event timer stop1, connected two NIM outputs of the discriminator in parallel. |
| 78106801 | 2021 | 167 | 12:00 | 2 | 99 | STATION UPS: Installed one new for the entire station. Removed UPS SLR1/2. This changed slightly earthing and grounding. |
| 78106801 | 2021 | 152 | 11:45 | 0 | 05.09 | LASER Medox-Delay2(D13) 270.24750us increased main pulse by reducing post pulse and select next regen pulse. |
| 78106801 | 2021 | 145 | 10:00 | 0 | 06 | RECEIVER Fabry-Perot: micro meter screws position GR:66.6(new scale) adjusted using Coude path retro reflector simulation. |
| 78106801 | 2021 | 124 | 10:00 | 0 | 06 | RECEIVER C-SPAD: For cross hair adjustment in front of the detector, slightly changed the vertical beam alignment of receive mirror RM6. |
| 78106801 | 2021 | 116 | 10:00 | 0 | 08.02 | CAL: End of range bias. There was not yet a real fix concerning high RMS. So, the problem might still remain. |
| 78106801 | 2021 | 113 | 10:00 | 2 | 08.02 | CAL: Beginning of range bias due to a coaxial tee and cable workaround at the event timer stop input to get stops again. |
| 78106801 | 2021 | 096 | 15:00 | 0 | 08.02 | CAL: End of high outliers? Temperature gradient around the detector box reduced by rearranging the replacement air condition. |
| 78106801 | 2021 | 050 | 00:00 | 2 | 08.02 | CAL: Beginning of high outliers. An air condition was gone. A replacement air condition was setup. |
| 78106801 | 2020 | 344 | 13:00 | 0 | 05 | LASER Chiller: DI-cartridge exchanged (after too high conductivity). |
| 78106801 | 2020 | 325 | 13:00 | 0 | 06 | RECEIVER Fabry-Perot: micro meter screws position GR:20.5,IR:71.8, IR adjusted using Coude path retro reflector simulation. |
| 78106801 | 2020 | 294 | 10:00 | 0 | 05.09 | LASER Medox-Delay2(D13) 270.23350us undone last change. |
| 78106801 | 2020 | 253 | 10:00 | 0 | 05.09 | LASER Medox-Delay2(D13) 270.24750us increased main pulse by reducing post pulse and select next regen pulse. |
| 78106801 | 2020 | 212 | 18:00 | 0 | 4.01 | TELESCOPE Elevation Encoder: Cleaned scanning head due to high pollution. |
| 78106801 | 2020 | 196 | 07:00 | 0 | 09 | TIME+FREQ Set maser frequency synthesiser value to 869.314638. |
| 78106801 | 2020 | 163 | 10:00 | 0 | 05 | LASER Infrared: Removed IR foam/absorber located after beam splitter/polarizer P10 and before P11. |
| 78106801 | 2020 | 162 | 13:00 | 0 | 05 | LASER Chiller: Particle filter exchanged (after too low flow). |
| 78106801 | 2020 | 093 | 13:00 | 0 | 05 | LASER beam direction alignment within telescope socket |
| 78106801 | 2020 | 007 | 07:45 | 0 | 09 | TIME+FREQ Set maser frequency synthesiser value to 869.314505 and 1PPS(Z) to GPS-30 us. |
| 78106801 | 2019 | 182 | 13:00 | 1 | 05.09 | LASER Compensated start diode time walk/Calibration constant C3 changed by -20ps/6mm in order to move cal histogram to 0. |
| 78106801 | 2019 | 169 | 18:00 | 1 | 05.09 | LASER Regeneration amplifier: Medox-Triode replaced due to too high pre-pulses |
| 78106801 | 2019 | 092 | 15:50 | 0 | 09 | TIME+FREQ Set maser frequency synthesiser value to 869.314352 and 1PPS(Z) to GPS-30 us. |
| 78106801 | 2019 | 058 | 18:00 | 0 | 09 | TIME Local time scale: local 1PPS offsets are now measured using a Trimble GPS receiver and a Standfort counter. |
| 78106801 | 2018 | 299 | 13:05 | 0 | 09 | TIME+FREQ Set maser frequency synthesiser value to 869.314150 and 1PPS(Z) to GPS-30 us. |
| 78106801 | 2018 | 226 | 08:00 | 0 | 05 | LASER Chiller: DI-cartridge and particle filter exchanged (after too high conductivity). |
| 78106801 | 2018 | 058 | 10:55 | 0 | 12.03 | METEO Humidity Sensor: After 100 % humidity, showed a memory effect and needed too long time to decrease to the real value. Replaced sensor by another model. |
| 78106801 | 2017 | 325 | 17:11 | 0 | 09 | TIME Local time scale: Between 13:11 and 17:11 generated time bias. |
| 78106801 | 2017 | 304 | 07:49 | 0 | 09 | TIME Local time scale: Locked to GPS again and, thus, time bias at usual GPS offsets again. |
| 78106801 | 2017 | 296 | 13:11 | 0 | 09 | TIME Local time scale: lost due to power loss of the garage USV24V and the connected devices. Generated huge time bias. |
| 78106801 | 2017 | 166 | 07:45 | 0 | 09 | TIME+FREQ Set maser frequency synthesiser value to 869.314070 and 1PPS(Z) to GPS-30 us. |
| 78106801 | 2017 | 061 | 18:00 | 0 | 06 | RECEIVER Fabry-Perot: micro meter screws position 520, using Coude path retro reflector simulation. |
| 78106801 | 2017 | 052 | 18:00 | 1 | 05.09 | LASER Compensated start diode time walk |
| 78106801 | 2017 | 038 | 18:00 | 0 | 05.09 | LASER Medox-Delay2(D13) 270.23350us using new double pass amplifier |
| 78106801 | 2017 | 038 | 18:00 | 1 | 05.08 | LASER Double pass amplifier: DPCH 256 replaced by new DPCH 236, aligned, regen re-adjusted |
| 78106801 | 2017 | 019 | 18:00 | 0 | 05 | LASER Chiller: DI-cartridge and particle filter exchanged (after too high conductivity). |
| 78106801 | 2016 | 330 | 08:30 | 0 | 09 | TIME+FREQ Set maser frequency synthesiser value to 869.313893 and 1PPS(Z) to GPS-30 us. |
| 78106801 | 2016 | 316 | 18:00 | 0 | 05.08 | LASER Double pass amplifier: DPCH 256 removed (to be replaced be a new DPCH 236 in the near future). |
| 78106801 | 2016 | 295 | 18:00 | 0 | 05.08 | LASER Medox Driver: High voltage power supply defect |
| 78106801 | 2016 | 258 | 10:30 | 0 | 09 | TIME+FREQ Set maser frequency synthesiser value to 869.313863 and 1PPS(Z) to GPS-30 us. |
| 78106801 | 2016 | 196 | 18:00 | 0 | 05.08 | LASER Double pass amplifier: Second compensation of lower gain: Startdiode: Discriminator: Threshold reduced from 0.600 V to 0.300 V. |
| 78106801 | 2016 | 180 | 18:00 | 0 | 05.08 | LASER Double pass amplifier: Second lower gain. |
| 78106801 | 2016 | 123 | 18:00 | 0 | 05.08 | LASER Double pass amplifier: First compensation of lower gain: Startdiode: PowerDivider: 50 Ohm terminator removal. |
| 78106801 | 2016 | 118 | 18:00 | 0 | 05.08 | LASER Double pass amplifier: First lower gain. |
| 78106801 | 2016 | 099 | 18:00 | 0 | 05 | LASER Chiller: For regen stability, increased operating water temperature from 20 to 22 degrees. SLR operation continues |
| 78106801 | 2016 | 099 | 18:00 | 0 | 05.08 | LASER Regeneration amplifier: For optimisation, M5 and pockels cell adjustment at 25 degree water temperature |
| 78106801 | 2016 | 078 | 18:00 | 0 | 05 | LASER Chiller: For energy maximisation, reduced operating water temperature from 25 to 20 degrees |
| 78106801 | 2016 | 077 | 18:00 | 1 | 05.08 | LASER Double pass amplifier: DPCH 256 re-installed after repair |
| 78106801 | 2015 | 338 | 18:00 | 0 | 05.08 | LASER Double pass amplifier: DPCH 256 removed for repair. |
| 78106801 | 2015 | 294 | 18:00 | 0 | 05.08 | LASER Regeneration amplifier: For stabilisation, optimisation of the Regen and seeding |
| 78106801 | 2015 | 258 | 18:00 | 0 | 05 | LASER Chiller: DI-cartridge and particle filter exchanged (after too high conductivity), now 0.2uS instead of 12uS. Water connectors at laser box exchanged. |
| 78106801 | 2015 | 258 | 18:00 | 0 | 05.08 | LASER Regeneration amplifier: Measured output energy: 3.4 mJ |
| 78106801 | 2015 | 134 | 18:00 | 0 | 06 | RECEIVER Fabry-Perot: micro meter screws position 497, new optics alignment compensated, raw adjustment |
| 78106801 | 2015 | 098 | 18:00 | 0 | 05.08 | LASER Medox-Delay2(D13) 270.23400us using repaired regeneration amplifier |
| 78106801 | 2015 | 098 | 18:00 | 1 | 05.08 | LASER Regeneration amplifier: DPCH 236 re-installed after repair |
| 78106801 | 2015 | 059 | 18:00 | 0 | 99 | ZIMLAT-PC PFI=1 (derotates now again); was deactivated due to maintainance |
| 78106801 | 2015 | 021 | 18:00 | 0 | 4.01 | TELESCOPE Adjustment: Adjustment support removed from elevation axis. We had CCD observations through paper at the SI1100 camera |
| 78106801 | 2015 | 013 | 18:00 | 0 | 4.01 | TELESCOPE Adjustment: Integrated adjustment support at the elevation axis |
| 78106801 | 2015 | 011 | 18:00 | 0 | 4.01 | TELESCOPE Adjustment: Adaptation of the adjustment laser beam from the optical bench towards the optical axis of the telescope |
| 78106801 | 2015 | 007 | 18:00 | 0 | 99 | CAMERA Shutter of the SI1100: evaluated open/close delays at the freezer: min/typ/max=50ms/55ms/65ms |
| 78106801 | 2014 | 306 | 18:00 | 0 | 05.08 | LASER Regeneration amplifier: Water leakage, shut down SLR-operation |
| 78106801 | 2014 | 290 | 18:00 | 0 | 99 | STATION Cooling: Water filled-up |
| 78106801 | 2014 | 287 | 18:00 | 0 | 05 | LASER Chiller: Manufacturer replaced defect hot gas/magnete valve; DI-cartridge and particle filter exchanged too |
| 78106801 | 2014 | 262 | 18:00 | 0 | 05 | LASER Thick laser head cable moved/kneaded in order to get current pulses without pulse-end ripples again |
| 78106801 | 2014 | 259 | 18:00 | 0 | 10.01 | DATAEVAL normpt.f: Fixed the normal point bin rms by correcting statistics |
| 78106801 | 2014 | 259 | 18:00 | 0 | 99 | STATION Cooling: Water filled-up |
| 78106801 | 2014 | 252 | 18:00 | 0 | 99 | DOME Engines and reduction gear exchanged |
| 78106801 | 2014 | 204 | 18:00 | 0 | 05.08 | LASER Medox-Delay2(D13) 270.24800us using new double pass amplifier |
| 78106801 | 2014 | 203 | 00:00 | 1 | 05.07 | LASER Double pass amplifier: DPCH 236 replaced by DPCH 256, Medox-Triode replaced |
| 78106801 | 2014 | 154 | 18:00 | 0 | 05 | LASER Chiller: DI-cartridge and particle filter exchanged (after too high conductivity), now 0.4uS..0.9uS instead of 13uS |
| 78106801 | 2014 | 028 | 18:00 | 0 | 05 | LASER Chiller: Conductivity feedback loop activated, conductivity-set value range set to standard (4uS..7uS) |
| 78106801 | 2014 | 015 | 18:00 | 0 | 05.07 | LASER Medox-Delay1(D12) 270.00400us read out only |
| 78106801 | 2014 | 015 | 18:00 | 0 | 05.07 | LASER Medox-Delay2(D13) 270.23300us read out only |
| 78106801 | 2013 | 349 | 18:00 | 0 | 05 | LASER Chiller: De-ionisation cartridge exchanged after too high conductivity, now 0,4uS instead of 8?uS, Reason: usually exchange after two years, but a lot of changes in the water loop: manometer integrated and removed at different locations, 1. flow sensor replaced, 2. flow sensor integrated, laser heads unplugged and re-plugged |
| 78106801 | 2013 | 315 | 18:00 | 0 | 05 | LASER Chiller: Particle filter: screwed more tightly in order to loose no more water |
| 78106801 | 2013 | 289 | 18:00 | 0 | 05 | LASER Chiller: Flow sensor replaced. Posthumous: This was the reason for the chiller flow errors |
| 78106801 | 2013 | 261 | 18:00 | 0 | 05 | LASER Chiller: De-ionisation cartridge exchanged after too high conductivity, now 0,4uS instead of 4uS |
| 78106801 | 2013 | 200 | 18:00 | 0 | 05 | LASER Chiller: Particle filter exchanged, flow before/after exchange <5,0 (error flow 1) / 8,3 l/min |
| 78106801 | 2013 | 200 | 18:00 | 0 | 05 | LASER Chiller: Water completely removed und hoses of the secondary loop flushed using destillated water |
| 78106801 | 2013 | 200 | 18:00 | 0 | 05 | LASER Chiller: Water filled-up to max after emptying completely |
| 78106801 | 2013 | 196 | 18:00 | 0 | 05 | LASER Chiller: Water filled-up to max due to conductivity warning alarm |
| 78106801 | 2013 | 185 | 18:00 | 0 | 05 | LASER Chiller: Water filled-up to max due to integration of the repaired laser head two replacements |
| 78106801 | 2013 | 185 | 18:00 | 0 | 05.07 | LASER Double pass amplifier (Replacement head): DPCH236 installed after repair of a diode |
| 78106801 | 2013 | 185 | 18:00 | 0 | 05.07 | LASER Medox-Delay2(D13) 270.23305us using repaired double pass amplifier |
| 78106801 | 2013 | 161 | 18:00 | 0 | 05 | LASER Chiller: Particle filter full with particles (determined after laser head two replacement has now malfunction) |
| 78106801 | 2013 | 138 | 18:00 | 0 | 05 | LASER Chiller: Water filled-up to max (after alarm) |
| 78106801 | 2013 | 122 | 18:00 | 0 | 06 | RECEIVER Fabry-Perot: micro meter screws position 550, Fabry-Perrot positioning support integrated, vernier adjustment |
| 78106801 | 2013 | 100 | 18:00 | 0 | 05 | LASER Chiller: Particle filter exchanged, flow before/after exchange <7,0 (error flow 1) / 8,3 l/min |
| 78106801 | 2013 | 100 | 18:00 | 0 | 05 | LASER Chiller: Water filled-up to max due Particle filter exchange |
| 78106801 | 2013 | 077 | 18:00 | 0 | 05 | LASER Chiller: Water filled-up to max (after alarm) again after three weeks already |
| 78106801 | 2013 | 056 | 18:00 | 0 | 05 | LASER Chiller: Water filled-up to max (after alarm) |
| 78106801 | 2013 | 045 | 18:00 | 0 | 05.07 | LASER Medox-Delay2(D13) 270.2480 us Pre-/Post-Pulse Correction |
| 78106801 | 2013 | 045 | 00:00 | 1 | 05.06 | LASER Double path amplifier: DPCH 256 replaced by DPCH 236 |
| 78106801 | 2013 | 044 | 18:00 | 0 | 05.06 | LASER Medox-Delay2(D13) 270.24780us read out only |
| 78106801 | 2013 | 016 | 00:00 | 1 | 05.05 | LASER SHG crystal replaced |
| 78106801 | 2012 | 346 | 18:00 | 0 | 05 | LASER Chiller: Particle filter exchanged (Device manufacturer repaired device and exchanged the filter) |
| 78106801 | 2012 | 345 | 18:00 | 0 | 05.05 | LASER Double path amplifier: Water leakage |
| 78106801 | 2012 | 316 | 18:00 | 0 | 99 | STATION Cooling: Water filled-up |
| 78106801 | 2012 | 300 | 18:00 | 0 | 05 | LASER Chiller: Particle filter exchanged |
| 78106801 | 2012 | 027 | 00:00 | 1 | 05.04 | RECEIVER Event Timer: ET32 #3203 replaced by ET32 #3207 |
| 78106801 | 2011 | 181 | 18:00 | 0 | 05.04 | LASER Medox-Delay2(D13) 270.2845 us read from documentation |
| 78106801 | 2010 | 264 | 18:00 | 0 | 06 | RECEIVER Fabry-Perot: micro meter screws position 633 |
| 78106801 | 2010 | 243 | 18:00 | 0 | 05 | LASER Chiller: Particle filter exchanged, flow before/after exchange 7,5 / 8,3 l/min |
| 78106801 | 2008 | 197 | 18:00 | 0 | 06 | RECEIVER Fabry-Perot: micro meter screws position 700, SPAD re-adjusted |
| 78106801 | 2008 | 085 | 00:00 | 3 | 05 | STATION New baseline configuration |
| 78106801 | 2008 | 049 | 18:00 | 0 | 05.03 | LASER MEDOX replaced. Effect: Lower single shot rms: (50 ps for 423 nm SPAD calibration: 80 ps for 423 nm SPAD Lageos) |
| 78106801 | 2006 | 172 | 00:00 | 2 | 08.02 | CAL Pre- and after-pass calibration to terrestrial target |
| 78106801 | 2006 | 082 | 00:00 | 3 | 05 | RECEIVER 423 nm: Hamamatsu PM + A032ET / 846 nm: PM + A032ET |
| 78106801 | 2006 | 034 | 00:00 | 3 | 05 | RECEIVER 423 nm: Hamamatsu PM + A032ET / 846 nm: PM + SR620 timer |
| 78106801 | 2003 | 248 | 18:00 | 0 | 05.02 | LASER New etalon installed on 9 March 2001 |
| 78106801 | 2001 | 068 | 18:00 | 0 | 05.01 | LASER Pulse width was not according to specs: (verified with streak camera end of 2000) |
| 78106801 | 2001 | 067 | 00:00 | 2 | 05 | LASER Laser pulse width reduced to 100 ps FWHM |
| 78106801 | 1999 | 236 | 00:00 | 3 | 10.01 | DATAEVAL Normalpoint bin shifted by half an interval to conform |
| 78106801 | 1997 | 355 | 00:00 | 3 | 05 | RECEIVER Detector Hamamatsu PM replaced. New: H6533 |
| 78106801 | 1997 | 001 | 00:00 | 3 | 05 | STATION Baseline configuration |
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