2. Instrument Description

• 2.1 Introduction
• 2.2 Overview
• 2.3 Focal Plane Scale
• 2.4 Data Collection with ISOPHOT
  • 2.4.1 Signal flow in ISOPHOT
  • 2.4.2 Cold Readout Electronics (CRE)
  • 2.4.3 Detector Interface Electronics (DIE)
  • 2.4.4 Readout timing control
• 2.5 ISOPHOT Measurement Concept
• 2.6 Detector Subsystems
  • 2.6.1 PHT-P
  • 2.6.2 PHT-C
  • 2.6.3 PHT-S
• 2.7 Fine Calibration Sources (FCSs)
• 2.8 Focal Plane Chopper (FPC)
• 2.9 Filters