In-situ calibration: migrating control system IP module calibration from the bench to the storage ring
The Control System for the Advanced Light Source (ALS) at Lawrence Berkeley National Lab (LBNL) uses in-house designed IndustryPack(registered trademark) (IP) modules contained in compact PCI (cPCI) crates with 16-bit analog I/O to control instrumentation. To make the IP modules interchangeable, each module is calibrated for gain and offset compensation. We initially developed a method of verifying and calibrating the IP modules in a lab bench test environment using a PC with LabVIEW. The subsequent discovery that the ADCs have significant drift characteristics over periods of days of installed operation prompted development of an ''in-situ'' calibration process--one in which the IP modules can be calibrated without removing them from the cPCI crates in the storage ring. This paper discusses the original LabVIEW PC calibration and the migration to the proposed in-situ EPICS control system calibration.
- Research Organization:
- Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
- Sponsoring Organization:
- USDOE Director, Office of Science (US)
- DOE Contract Number:
- AC03-76SF00098
- OSTI ID:
- 796102
- Report Number(s):
- LBNL-50191; R&D Project: 458030; TRN: US0201448
- Resource Relation:
- Conference: Beam Instrumentation Workshop, Upton, NY (US), 05/06/2002--05/09/2002; Other Information: PBD: 30 Apr 2002
- Country of Publication:
- United States
- Language:
- English
Similar Records
ALS control system IP I/O module upgrade
LANSCE-R WIRE-SCANNER SYSTEM