Spacecraft Thermal Info:
On the ground, limits can be set for any mnemonic:
RL (red low), YL (yellow low), YH (yellow high), RH (red high)
. Also, delta limits can be defined - they flag when a change is bigger than an allowed delta.
Instrument mnemonics usually begin with the first letter of the instrument, for example:
MIPWA = MDI current
N=SWAN, L=EIT and LASCO, F=CELIAS, H=CEPAC
. There are spacecraft subsystem mnemonics that begin with
. Instrument related spacecraft mnemonics begin with
On the spacecraft, thermal mnemonics are automatically monitored if the function is enabled, and action is taken if needed. Monitoring of individual mnemonics can be disabled.
Each spacecraft temperature mnemonic has a
T1, T2, T3, T4
T1 & T2 -> keeps the temperature between these 2 numbers if temperature is themostatically controlled -
NOT used for most mnemonics
T3 & T4 -> if temperature goes outside of these, corrective action is taken
For information about thermal reconfigurations, see
T1 & T2 values are inside T3 & T4 values. Ground red limits are also inside the T3 & T4 values.
has a defined T1, T2, T3, T4.