System for Data Collecting and Processing (SSOI)
SSOI has been developed for the "Spektr-RG" mission and is an integrated intelligent interface between the s/c systems and a set of X-ray detectors (KRD) of the ART-XC telescope and thermal control unit (BU SOTR).The system for Data Collecting and Processing is intended for solving the following tasks:
- - receiving and storing digital commands, as well as reception of onboard time code from s/c housekeeping systems;
- - the transfer of digital control commands and onboard time code to KRD and BU SOTR of the ART-XC telescope, as well as receiving from them and storing telemetry and scientific information;
- - transferring data stored in nonvolatile memory to the radio channel for downlinking to Earth
- - receiving clock from the s/c onboard system with a frequency of 1 Hz and its retranslation to the KRD of the ART-XC telescope.
Main characteristics
| Mass, kg | 2,5 |
| Dimensions, mm | 218х185х105 |
| Supply voltage, V | 25,65 ÷ 28,35 |
| Power consumption, W | ≤ 24 |
| Warm-up time after powering, с | ≤ 60 |
| Operating temperature range on the instrument adapter, С° | -20 - +50 |
| Resurs, hour | 81030 |
| Lifetime, years | 10 |
| Probability of failure-free operation during the expedition (7.5 years) | 0,95 |