1.0 Introduction; 1.1 Aec 2 Tm - CPI Indico 100 Series Service And Installation Manual

3D
AEC Calibration
3D.1.0 INTRODUCTION
This section covers interfacing and calibration of the various AEC board assemblies that are used in Millenia
and Indico 100 generators (for ion chambers, solid state chambers or PMT pickups).
PLEASE NOTE THAT THE GENERATOR IS FACTORY CONFIGURED FOR A SPECIFIC AEC
DEVICE(S). REFER TO THE CUSTOMER PRODUCT DESCRIPTION FORM IN CHAPTER 1 SECTION D
FOR THE FACTORY CONFIGURED AEC COMPATIBILITY OF THIS GENERATOR.
The introduction in this section contains background information relevant to AEC operation. It is strongly
suggested that this be read and understood prior to beginning AEC calibration.
AEC calibration requires that a calibration curve be established which relates optical density to various kV
breakpoints.
The 75 kV knee breakpoint is calibrated at the slowest film screen combination. The remaining kV
breakpoints are calibrated next, then the breakpoint calibration is repeated at the next highest film speed,
with the highest film speed being calibrated last.
After breakpoint calibration, ± density setup is done at the slowest film speed, then RLF
compensation and multiple spot compensation are done if desired.
2 2 TM
3D.1.1 A EC (Automated Automatic Exposure Control Calibration)
2
The optional A
calibration time by up to 80%. The kit consists of a photo detector which is placed inside the film cassette, a
preamplifier, interface cabling and adapters, A
packaged in a convenient carrying case.
2
The A EC
the section DATA LINK at the end of chapter 3C for information on equipment required to run the
TM
GenWare software.
Please contact the factory for further information.
Page 3D-2
2 TM
EC kit automates most of the AEC calibration functions, simplifying and reducing AEC
2 TM
system must be used in conjunction with the CPI GenWare
Rev. D Millenia / Indico 100 Series Service Manual
2 2 TM
EC software, and an A
CPI Canada Inc.
2 2 TM
EC instruction manual all
TM
utility software. Refer to
Ch # 740904-06