Telecom system performance was nominal this sol. There are no telecom operational constraints for future rover operations.
The end-of-sol communication system performance for the downlink was as follows:
SOL 50 DOWNLINK TELECOM STATISTICS
Rov Radio Temp Low = -3.3
Rov Radio Temp High = 27.2
Rov Radio Temp Avg = 10.6
LMRE Radio Temp Low = -8.3
LMRE Radio Temp High = 19.6
LMRE Radio Temp Avg = 13.9
Rx Current Low = 46.4
Rx Current High = 49.3
Rx Current Avg = 46.8
Tx Current Low = 153.7
Tx Current High = 153.7
Tx Current Avg = 153.7
LMRE Good Frames = 555
LMRE Garbled Frames = 138
Avg LMRE Link Quality%= 80.1
TX_CH_FRAMES = 409
RX_CH_FRAMES = 409
Total Frame Resends = 0
Avg Rover Link Quality%= 100.0
COM:Bad CRC Errors = 15
COM:Timeout Errors = 43380
COM:Rx Abort Errors = 696
COM:No Sync Errors = 0
COM:RX Com Errors = 35742
In planning the sequence for Sol 51 and beyond, the revised modem heating strategy used should be followed:
The rover modem should be commanded in the next-day runout sequence to perform a 600 second modem heating at wakeup. If no overnight APXS operations are to be conducted, the wakeup rover modem heating should be extended to 900 seconds. Modem reheating should be triggered by an excessive number of frame retries on the rover-to-lander link, and the reheating should continue for five minutes or until the rover modem reaches +30 C. However, if the LMRE radio is off, then the reheat to get to +30C is not needed. Also, if there are afternoon only downlink sessions, then no modem heating is required after wakeup on solar. This requires some coordination of timing between the LMRE ON times and the rover transmissions. The sequence planners should consider the uncertainty in event completion times introduced by any required modem reheating cycles.
