Subject: [Sirgas-Mail] No.2851: Receptores LEICA GR30 y GR50 deben ser reinicializados! From: Laura Sanchez Author: Laura Snchez, IGS-RNAAC-SIRGAS Estimados Colegas: Les transmito a continuacin un mensaje relacionado con el rastreo GLONASS de los los receptores LEICA GR30 y LEICA GR50. Aparentemente hay un error en el almanaque GLONASS preinstalado en los recpetores que lleva a una degradacin en el rastraeo de esas sennales. Lo nico que hay que hacer es reiniciar el proceso de medicin en los receptores y el problema queda resuelto. ”In order to solve this issue, a simple measurement engine initialization is required. You can do that by going to the GR30 or GR50 web interface, go to Receiver setup > Tools and click the Initialize measurement engine button.” Esta reinicializacin debe hacerse antes del 30 de marzo. Saludos cordiales, Laura Snchez DGFI-TUM IGS-RNNAC-SIRGAS Subject: Outdated GLONASS almanac information on Leica GR30 and GR50 receivers Date: Thu, 5 Mar 2020 10:20:52 +0000 From: TAWK Youssef Dear EUREF Site operators, We would like to bring your attention to an undesirable behavior that has been detected on Leica GR30 and GR50 receivers since January 1^st 2020. The problem occurs due to a wrong almanac date far in the future that was transmitted by the GLO satellites and stored on the GR30 and GR50 receivers. Hence, the newly received almanac data with correct and current dates are rejected as they appear older than the incorrect last stored almanac with the wrong future date. The fact of having an outdated almanac will cause GLONASS tracking degradation. The incorrect dated stored GLONASS almanac will last until _March 30^th , 2020_ due to the 90 days GLONASS almanacs validity. In order to solve this issue, a simple measurement engine initialization is required. You can do that by going to the GR30 or GR50 web interface, go to Receiver setup > Tools and click the Initialize measurement engine button. With this step, the stored GLONASS almanac will be deleted and a new almanac will be obtained.Please note that by resetting the measurement engine a _device reboot will be performed and hence a short data outage will be observed_. This step must be performed before _March 30^th , 2020_. If you have any questions or require any assistance, please do not hesitate to contact me. Best Regards *Youssef Tawk* Business Development Manager Europe GNSS Networks & Reference Stations Leica Geosystems AG Europastrasse 21 8152 Glattbrugg, Switzerland Office: +41 44 809 3310 Mobile: +41 79 952 1533 E-Mail: youssef.tawk@leica-geosystems.com Website: http://www.leica-geosystems.com/nrs Leica Geosystems is part of Hexagon