The next step is to make scientific instruments safe.
NASA announced Friday that it has successfully switched to the Hubble Space Telescope's backup computers, potentially ending more than a month of uncertainty about the telescope's future. This success came just two days after the agency showed that the original source had limited the original error. p>
This telescope comes with a backup of all of its computing devices (and in the case of memory), and a backup for backup). But any attempt to change the state to one of these results in the same errors, indicating that the problem is not memory or hardware processing, but rather a part of the hardware that supports the entire system. Finally the focus was on the power source. As NASA said:
A series of experiments that lasted for several days involving attempts to restart and reconfigure the computer and the backup computer were unsuccessful, but data collected from those activities by the Hubble team led them. To determine if the possible cause of this problem is in the power control unit (PCU).
PCU ... ensures stable voltage for charging computers. The PCU contains a power regulator that continuously supplies five volts of power to the computer carrying its load and memory. A secondary protection circuit senses the level of voltage coming out of the power regulator. If the voltage drops below or exceeds the permissible level, this secondary circuit tells the bus that it should stop working. The team's analysis shows that the voltage level from the regulator exceeds the acceptable (thus interrupting the secondary protection circuit) or the secondary protection circuit is damaged over time and in this case stuck. On Thursday, NASA announced that it has begun the process of switching to backup hardware to replace the potentially defective power controller. The process consists of commands transferred to everything using a computer to transfer targets to backup devices.Advertising
On Friday, NASA had a hit. The downloaded computer has been restored online and the software required for normal tasks has been successfully downloaded. The agency says it monitors the performance of charging computers while disabling various scientific instruments. If all goes well, the devices will undergo calibration stages tomorrow and scientific observations can begin again. p>
NASA succeeded in turning Hubble into backup devices
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