HASI ACRONYMS ann ABBREVIATION

ACC     Accelerometer sensor subsystem
ACU     Acoustic sensor
AD      Applicable Document
ASI     Agenzia Spaziale Italiana
C1, C2  TEM 1 (TEM 2) Coarse sensor TM packets (TM formats #98 and #102)
CDMS,U  Control and Data Management System, Unit
CEPT    CNRS Observatoire de Saint Maur, France
CISAS   Centro Interdipartimentale Studi e Attivita Spaziali (CISAS)
        'G. Colombo', UPD
DBS     Deployable Boom Subsystem
DDB     Descent Data Broadcast
DPU     Data Processing Unit Subsystem
EAICD   Experimenter to Archive Interface Control Document
ELF     Extremely Low Frequency
EM      Engineering Model
ESA     European Space Agency
ESTEC   European Science and Technologies Center
F1, F2  TEM 1 (TEM 2) Fine sensor TM packets (TM formats #96 and #100)
FM      Flight Model
FMI     Finnish Meteorological Institute
FS      Flight Spare model
HASI    HUYGENS Atmospheric Structure Instrument
HASI-I  HASI PWA Interface boxes
H/K     Housekeeping
H/W     Hardware
IAA     Instituto de Astrofisica Andalusia, Granada, Spain
I/F,i/f Interface
IPMO    Instrument Project Manager Office
IWF     Institut fur Weltraumforschung, Graz, Austria
LESIA   Laboratoire d'Environnement Spatial, Obs. Paris-Meudon, France
LPCE    Lab. de Phisique et Chimique de l'Environment, Orleans, France
MCA     Magnetic Coil Actuator device
MI      Mutual Impedance (experiment)
MI-Rx   MI receiver sensor
MI-Tx   MI transmitter sensor
N/A     Not Applicable
OG      Officine Galileo
PDS     Planetary Data System 
PI      Principal Investigator
PPI     Pressure Profile Instrument 
PSA     Planetary Science Archive 
PSSRI   Planetary Space Science Research Institute, The Open University, UK
PWA     Permittivity, Wave and Altimetry package
RAE     Radar Altimeter (Proximity sensors) Extension elec. board (DPU s/s)
RAU     Radar Altimeter Unit
RD      Reference Document
RP, REL RELaxation Probe sensor
S/S, s/s Subsystem
STUB    STUB subsystem
S/W     Software
T0      Mission Time for end of Probe Entry phase (descent device
        deployment begins)
Tacc    Mission time when HASI starts to acquire ACC sensors
(Td1, Td1w)   Mission time window for the first Boom deploy attempt
(Td2, Teoff)  Mission time window for the second Boom deploy attempt
Tdata   Mission time when HASI starts to acquire TEM and PRE sensors
TdataH  Mission time when  Probe relay link with Cassini should be set
Thigh   Mission time when HASI change from MEDIUM to HIGH Normal Session
Thasi   Mission time when HASI is switched-ON during Titan Descent
        (before T0 transition)
Tmid    Mission time when HASI change from LOW to MEDIUM Normal Session
Tradar  Mission time when HASI starts to acquire Proximity sensors
Tproximity  Mission Time to start the Impact state when HASI in
            Back-up sub-mode
TBD     To Be Defined
TEM     TEMperature sensors (STUB s/s)
Temp 1  Temperature sensor located inside of the Xservo sensor (ACC s/s)
Temp 2  Temperature sensor located inside on the ACC mounting block (ACC s/s)
TM      Telemetry
UPD     Universita Padova 
VLF     Very Low Frequency
Xservo   axis Servo accelerometer sensor (ACC s/s)
Xpiezo  X axis Piezo accelerometer sensor (ACC s/s)
Ypiezo  Y axis Piezo accelerometer sensor (ACC s/s)
Zpiezo  Z axis Piezo accelerometer sensor (ACC s/s)
Yvalue  Data which is contained in the PPI NORMAL session TM packets