TERMIUM Plus®

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FOCAL PLANE UNIT [3 records]

Record 1 2015-07-07

English

Subject field(s)
  • Scientific Instruments
  • Astronautics
CONT

Planck will carry two instruments: the High Frequency Instrument (HFI) and the Low Frequency Instrument (LFI). Together these instruments will observe and image the full sky in nine spectral bands between 30 and 857 GHz [gigahertz].

CONT

The HFI consists of the HFI focal plane unit, the readout electronics, the data processing unit, the coolers, and harness and tubes linking various subsystems.

French

Domaine(s)
  • Instruments scientifiques
  • Astronautique

Spanish

Save record 1

Record 2 2003-03-26

English

Subject field(s)
  • Satellite Telecommunications
  • Spacecraft
CONT

The main units of the AIC are : the focal plane assembly(FPA), equipped with a back-thinned illuminated CCD matrix and a front-end amplifier, provides the optical signal detection. A thermoelectric peltier cooler under the detector sets the operating point at-25°C ± 100 mK, the detection box(BD) which supplies the FPA with the necessary electrical signals to operate the CCD. It generates the clock waveforms from the VEU signals and filters the supplied voltage from the DSU, the video electronics unit(VEU) which processes the analog signal coming from the FPA, digitizes it on 12 bits before passing it on in serial processing to the science data processing subsystem(SDPSS). It also provides the DBs with the primary clock signal. The power conditioning of the VEU is located in the same unit, the detection supply unit(DSU) delivers relevant stabilized voltages to the 5 DUs and power to thermo-coolers from the main supply feeder of the instrument.

OBS

Converter sub-assembly.

French

Domaine(s)
  • Télécommunications par satellite
  • Engins spatiaux

Spanish

Save record 2

Record 3 2001-04-01

English

Subject field(s)
  • Space Exploration Equipment and Tools

French

Domaine(s)
  • Équipement et outillage d'exploration spatiale

Spanish

Save record 3

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