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FILE NAME:   PKSYS.TX     J. SCHAINBAUM


             SK&F LABORATORIES PEAK REPORTING SYSTEM     7/18/73



	PEAK VALUES ON AN INCOMING ANALOG SIGNAL ARE DIGITIZED
AND STORED ON PUNCHED PAPER TAPE TOGETHER WITH AN INSTRUMENT
IDENTIFICATION CODE. THE PAPER TAPE IS THEN PROCESSED  BY
A DIGITAL COMPUTER. EXISTING PROCESSING PROGRAMS RUN ON AN 
OUTSIDE TIMESHARING COMPUTER.



	THE STANDARD INSTRUMENT ACCEPTS EIGHT SEPARATE ANALOG INPUTS
AND LOGS THE DETECTED PEAKS FROM ALL SELECTED CHANNELS ON THE SAME 
TELETYPE. AFTER ALL THE PEAKS HAVE BEEN REPORTED,
THE TAPE CAN BE REMOVED AND USED AS INPUT FOR THE PROCESSING
PROGRAMS. THE USER HAS THE OPTION OF ATTACHING TWO TELETYPES
TO THE SYSTEM AND SEGRAGATING REPORT CHANNELS TO ONE OR THE OTHER
MACHINE. THIS WILL PERMIT A SYSTEM TO OPERATE WITH SHORT RUNS
THAT REQUIRE FAST TURNAROUND TIME FOR PROCESSED REPORTS.



	THE TECHNIQUE FOR DETECTING PEAKS USED IN THIS SYSTEM IS 
DESCRIBED IN A PENDING METHODS PATENT. SMALL PEAKS ARE DETECTED
AS READILY AS LARGE ONES BECAUSE THE INSTRUMENT AUTOMATICALLY ADJUSTS
ITS SENSITIVITY AS A FUNCTION OF SIGNAL AMPLITUDE. THE CIRCUITS
ARE NOT AFFECTED BY CHANGES OF DURATION OF THE PEAKS. AN OPERATOR CAN 
USE ANY NORMAL SAMPLER TURNATABLE SPEED ON AN AUTOMATIC CHEMISTRY
SYSTEM.