A scaler printout system

NUCLEAR 1N57RUMEN75 AND ME7H0D5 35 (1965) 341-344; ~ N 0 R 7 H - H 0 L L A N D PU8L15H1N6 C0.

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Rece1ved 15 June 1965 5evera1 5ca1er pr1nt0ut 5y5tem5 have 6een de5cr16ed 1n the 11terature, and 0ther5 are ava11a61e c0mmerc1a11y1). 7he 5y5tem de5cr16ed here 15 capa61e 0fpr1nt1n9 data fr0m up t0 f0urteen 7-decade 5ca1er5 0nt0 3"-w1de paper tape 1n 1e55 than 3 5ec. 1t 15 c0mp05ed 0f c0mmerc1a1 5ca1er52), a c0mmerc1a1 d191ta1 rec0rder 3) and a d191ta1 data 5canner (f19. 1). A typ1ca1 pr1nt0ut 15 5h0wn 1n f19. 2. 7he D191ta1 Data 5canner 15 a d191ta1 mu1t1p1ex1n9 and c0ntr01 dev1ce 1nterfac1n9 the 5ca1er5 t0 the d191ta1 rec0rder. 1t ut1112e5 5111c0n 5em1c0nduct0r5 exc1u51ve1y and 15 c0n5tructed 0n p1u9-1n-card54). 7he un1t mea5ure5 7• h19h, 19•• w1de and 15•• deep. 0perat10n. A typ1ca1 519na1 path 15 5h0wn 1n f19. 4, and a 610ck d1a9ram 0f the D191ta1 D a t a 5canner 1n * w0rk 5upp0rted 6y the u. 5. At0m1c Ener9y C0mm15510n.

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f19. 5. Each 5ca1er 0utput 6uffer 5ta9e c0n515t5 0f a 9erman1um pnp tran515t0r, wh1ch 15 5aturated f0r an 0utput 0f 0 V 0r 15 cut 0ff f0r an 0utput 0f - 1 0 V. 7he d10de mu1t1p1exer 9ate5 1n the 5canner 5e1ect wh1ch 0ne 0f the 14 data 1nput channe15 15 t0 6e pr1nted 6y the rec0rder; 1n f19. 4 th15 15 channe1 1, c0rre5p0nd1n9 t0 the 4u1e5cent c0nd1t10n. 7he mu1t1p1exer 9ate5 are 5e4uent1a11y 5e1ected 6y the Channe1 C0unter v1a a dec0der and 9ate dr1ver5. 7he Channe1 C0unter 15 a f0ur f11p-f10p 61nary c0unter, wh1ch 15 1ncremented 6y a 5can 519na1 return1n9 fr0m the rec0rder after each 11ne 15 pr1nted. 7he num6er 0f channe15 t0 6e pr1nted 15 5e1ected 6y a fr0nt pane1 thum6wee1 5w1tch. When th15 num6er 15 reached, the Channe1 C0unter 15 re5et and the pr1nt0ut 15 term1nated after a 61ank f1ne 15 pr1nted.

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F19. 2. 7yp1ca1 pr1nt0ut. A fr0nt v1ew 0f the D191ta1 Data 5canner 15 5h0wn 1n f19. 6 . 7 h r e e thum6whee1 5w1tche5 5e1ect an 1dent1f1cat10n c0de wh1ch 15 pr1nted 0n each 11ne 0f data5). 7he 7e5t t0991e 5w1tch 5e1ect5 the te5t c0de 5upp11ed t0 a rear pane1 te5t c0nnect0r f0r the purp05e 0f te5t1n9 the f0urteen 1nput channe15 and 1nterc0nnect1n9 mu1t1c0nduct0r ca61e5. 7he M0de 5w1tch 5e1ect5 0ne 0f the three 0perat1n9 m0de5: 1n the Externa1 M0de the rec0rder pr1nt5 0ne 5et 0f data f0r each pu15e rece1ved at the Externa1 Pr1nt 1nput;1n the Manua1 5can M0de the rec0rder pr1nt5 0ne 5et 0f data f0r each 0perat10n 0fthe Pr1nt pu5h6utt0n; 1n the 51n91e M0de the 5canner advance5 0ne channe1 and the rec0rder pr1nt5 0ne 11ne (0ne 5ca1er) f0r each 0perat10n 0 f t h e Pr1nt pu5h6utt0n. Depre551n9 the Re5et pu5h6utt0n-1nd1cat0r re5et5 the Channe1 C0unter t0 channe1 1, and the 1nd1cat0r 119ht 1nd1cate5 the re5et 5tate. A rear v1ew 0f the 5canner 15 5h0wn 1n f19. 7. 7he 1 . D . 0 U 7 and the 1.D.1N c0nnect0r5 are 1nterc0nnected 6y a mu1t1c0nduct0r ca61e, un1e55 1t 15 de51red t0 enter externa1 1ndent1f1cat10n 1nf0rmat10n. 7he 1nh161t 0utput5 pr0v1de externa1 c0ntr01 519na15 dur1n9 pr1nt0ut. Pr0v1510n 15 made t0 1n1t1ate pr1nt0ut5 after a pre5et num6er 0f c0unt5 have 6een accumu1ated 1n 5ca1er n0. 1. 7h15 feature 15 ut1112ed 1n the 5etup 5h0wn 1n f19. 3, a5 u5ed 1n an exper1ment.

F19. 3.7yp1ca1 5etup f0r an exper1ment.

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344

A.

BARNA

AND

D. HORELICK

Fig. 6. Front view of the Digital Data Scanner.

Fig. 7. Rear view of the Digital Data Scanner.

The effo!-ts of Mr. R. Carman and Mr. R. Nelson in the mechanical design, in the construction and in the wiring have been deeply appreciated. References 1) F. Iselin, Nucl. Instr. and Meth. 20 (1963) 330, describes a system which prints data from up to thirty 25 Mc/sec, 6-decade scalers on a Hewlett-Packard recorder operating at a rate of 4 scalers per second. H. G. Jackson, L. B. Robinson and D. L. Wieber, Nucl. Instr. and Meth. 30 (1964) 261, describe a system which prints data from 10 Mc/sec, 6-decade scalers on an IBM Selectric typewriter at a rate of approximately 2 scalers per second. The TSI Model 1520 Digital Scanner prints data from up to sixteen

TSI 7-decade Pulse Counters on an IBM Model B typewriter at a rate of approximately one scaler per second. 2) Model I51 IA Dual Pulse Counter, Transistor Specialties Inc. (TSI), Plainview, New York. This instrument consists of two independent 7-decade scalers, each capable of a 10 Mc/sec counting rate and provides both visual display and parallel electrical readout on rear panel multipin connectors. 2) Model 562AR Digital Recorder, Hewlett-Packard Co., Palo Alto, California. The solid-state unit accepts the l-2-4-8 Binary Coded Decimal (BCD) outputs of the scalers and is capable of printing a line of 12 alphanumeric characters at a rate of 5 lines per second. 4) The majority of the plug-in cards, the chassis and the power supply are products of Scientific Data Systems, Santa Monica, California. 5) This code consists of the digits 0 to 9, blank and a minus sign.