Multi users guide

Technical Report · Wed Apr 01 04:00:00 EST 1987

OSTI ID:6535987

Ballard, W P

MULTI is a pseudo-operating system for data acquisition written in Tektronix SPS BASIC. It controls any mix of Tektronix 7912AD and 7612D transient digitizers. Transient digitizers are used to acquire data in a number of fields such as pulsed power, laser research, and electro-magnetic pulse testing where the repetition rates are so low that sampling techniques are not useful. Also, the entire pulse may contain important data which vary from event to event. MULTI allows real-time sharing of digitizers among several single-shot accelerators using a programmable switch matrix. MULTI was designed to acquire large amounts of data from moderate to high pulse rate accelerators (up to 50 pulses per day) in a shared environment. Hence, only data acquisition, storage on disk, and plotting are built into the program. However, user-written special processing routines may be executed for each shot at run time if desired. Also, extensive post-processing capability is built-in which allows the same routine to be executed for a sequence of consecutive shots without operator intervention. Data may also be acquired in burst mode. However, burst mode only operates one 7912AD digitizer per pulse and only one accelerator at a time. It has been successfully operated up to 100 pulses at 1 Hz. In single-shot mode, two accelerators have successfully shared the system switching from one to the other randomly.

• Research Organization: Sandia National Labs., Albuquerque, NM (USA)
• DOE Contract Number: AC04-76DP00789
• OSTI ID: 6535987
• Report Number(s): SAND-86-1922; ON: DE87010526
• Country of Publication: United States
• Language: English

Related Subjects

99 GENERAL AND MISCELLANEOUS
990220* -- Computers
Computerized Models
& Computer Programs-- (1987-1989)
BASIC
COMPUTER CODES
COMPUTER GRAPHICS
DATA ACQUISITION SYSTEMS
DATA ANALYSIS
EXECUTIVE CODES
M CODES
PROGRAMMING LANGUAGES